FR2610508A1 - Bone biopsy apparatus - Google Patents

Bone biopsy apparatus Download PDF

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Publication number
FR2610508A1
FR2610508A1 FR8701582A FR8701582A FR2610508A1 FR 2610508 A1 FR2610508 A1 FR 2610508A1 FR 8701582 A FR8701582 A FR 8701582A FR 8701582 A FR8701582 A FR 8701582A FR 2610508 A1 FR2610508 A1 FR 2610508A1
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France
Prior art keywords
tube
lamellae
rotary tube
strips
bone
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Withdrawn
Application number
FR8701582A
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French (fr)
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ORLOVIC RADMILA
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ORLOVIC RADMILA
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Application filed by ORLOVIC RADMILA filed Critical ORLOVIC RADMILA
Priority to FR8701582A priority Critical patent/FR2610508A1/en
Publication of FR2610508A1 publication Critical patent/FR2610508A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B10/0233—Pointed or sharp biopsy instruments
    • A61B10/025—Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B2017/32004—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes having a laterally movable cutting member at its most distal end which remains within the contours of said end

Abstract

The invention relates to a bone biopsy apparatus of the type comprising a tube 1, fitted with a cutting end 5 and driven in rotation by a motor, the end of a piercer 12, housed in the said tube 1, projecting beyond the said cutting end 5 when passing through the soft tissues, and being retracted when drilling the bone tissue 14. The apparatus according to the invention is characterised in that the said end of the piercer 12 is formed by a plurality of metal strips 9 with folded ends 10, sliding simultaneously inside the rotary tube 1, between a deployed position, in which the said strips 9 form, by virtue of their folding 10, a tip 12 projecting at the end of the rotary tube 1, and a retracted position, in which the said strips 9 are housed inside the tube 1, and elastically deformed such their originally folded end comes into alignment with the rest of the strip 9. Application to bone biopsies.

Description

Appareil a biopsie osseuse. Bone biopsy device.

L'invention concerne un appareil a biopsie osseuse.The invention relates to a bone biopsy device.

Habituellanent, les biopsies osseuses sont effectuées au moyen d'un trocart, constitue d'un tube à extrémité coupante muni de poignées dans lequel est enfilé un poinçon muni également de poignées. Par enfoncement du poison a travers les tissus mous, on atteint la surface de l'os dans laquelle le bord coupant du tube découpe une carotte en continuant l'en fondement du tube par pression et rotation sans le poinçon. Arrivé a la profondeur qu'il estime suffisante, le praticien incline le tube et tourne afin de détacher la carotte.L'ensemble de cette intervention, qui est très utile pour des examens des tissus prélevés, est très douloureuse et traumatisante pour le patient . En outre, il arrive que la carotte se détache prématurément ou soit perdue au cours de l'extraction du trocart. Cette intervention est en outre longue, ce qui est éprouvant pour le praticien et fait sortir rapidement du temps imparti par une anesthésie locale, laquelle doit alors être renouvelée périodiquement. Usually, the bone biopsies are carried out by means of a trocar, consists of a tube with a cutting end provided with handles in which is inserted a punch also provided with handles. By pushing the poison through the soft tissue, we reach the surface of the bone in which the cutting edge of the tube cuts a carrot by continuing the foundation of the tube by pressure and rotation without the punch. When he reaches the depth he deems sufficient, the practitioner tilts the tube and turns in order to detach the carrot. The whole of this procedure, which is very useful for examining the tissues removed, is very painful and traumatic for the patient. In addition, the carrot may come off prematurely or be lost during the extraction of the trocar. This intervention is also long, which is tiresome for the practitioner and quickly gets out of the time allowed by local anesthesia, which must then be renewed periodically.

Pour diminuer la difficulté et le temps de pénétration d'un appareil a biopsie osseuse, on a proposé d'entrainer le tube coupant par un moteur (brevet PR-A 853 349) ou d'utiliser deux tubes concentriques a extrémités dentées tournant en sens inverse ( brevet US- A 4 306 570 ).To reduce the difficulty and the penetration time of a bone biopsy device, it has been proposed to drive the cutting tube by a motor (patent PR-A 853 349) or to use two concentric tubes with toothed ends rotating in opposite directions. reverse (US patent A 4,306,570).

Si ces propositions permettent effectivement d'obtenir une descente rigu- libre, sans effort et sans déplaoeeent latdral du système coupant, elles obligent encore, pour tenter de casser la carotte, a incliner l'appareil et tourner, ce qui est traumatisant et ne garantit pas un prélèvement efficace.If these proposals do make it possible to obtain a rigorous descent, effortlessly and without lateral displacement of the cutting system, they still oblige, in an attempt to break the carrot, to tilt the device and turn, which is traumatic and does not guarantee not an effective levy.

La présente invention vise a permettre un prélèvement de carotte sans inclinaison de l'appareil et a garantir le maintien de la carotte ainsi prélevée dans l'appareil.The present invention aims to allow a core sample to be taken without tilting the device and to guarantee the maintenance of the core thus removed from the device.

A cet effet, l'invention a pour objet un appareil a biopsie osseuse du type comprenant un tube muni d'une extrémité coupante et entrainé en rotation par un rtoteur,#l'extrémité d'un poinçon logé dans ledit tube faisant saillie au-dela de ladite extrémité coupante pendant la traversée des tissus mous et étant effacée pendant le forage du tissu osseux, caracté- risé par le fait que ladite extrémité du poinçon est formée par une pluralité de lamelles m~étalliques à extrémité pliées coulissant simultanément a l'intérieur du tube rotatif entre une position de sortie dans laquelle lesdites lamelles fondent, du fait de leur pliure, une pointe en saillie à l'extrémite du tube rotatif et une position efface, dans laquelle lesdites lamelles sont logées a l'intérieur du tube et défoncées élastiquement de manière que leur extrémité originellement pliée soit venue dans le prolongement du reste de la lamelle. To this end, the subject of the invention is a bone biopsy device of the type comprising a tube provided with a cutting end and driven in rotation by a rotor, # the end of a punch housed in said tube projecting from- beyond said cutting end during the passage of soft tissue and being erased during the drilling of the bone tissue, characterized in that said end of the punch is formed by a plurality of lamellas m ~ metal with folded end sliding simultaneously with the inside of the rotary tube between an exit position in which said strips melt, due to their bending, a point projecting at the end of the rotary tube and an erased position, in which said strips are housed inside the tube and knocked out elastically so that their originally folded end came in line with the rest of the strip.

En position de sortie, la pointe formée par les lamelles perfore les tissus mous et empêche ceux-ci de pénétrer dans le tube, comme c'est le cas du poinçon habituel. Arrive en contact avec le tissus osseux, i 'opérateur fait remonter les lamelles en position effacée, de sorte quelles ne gênent pas pour le découpage de la carotte par le tube. Une fois arrivé a la pro fondeur choisie, 1 'opérateur fait ressortir les lamelles en position de sortie de sorte que leurs extrémités viennent se rejoiddre en traversant la carotte.La carotte est ainsi découpée à sa base et elle reste nain tenue dans le tube par les lamelles pendant l'extraction de l'appareil. La rupture de la carotte est donc effectuée de manière sûre et la carotte est positivement maintenue dans le tube après cette rupture.In the exit position, the point formed by the lamellae punctures the soft tissue and prevents it from entering the tube, as is the case with the usual punch. Comes into contact with the bone tissue, the operator raises the strips in the erased position, so that they do not interfere with the cutting of the carrot by the tube. Once arrived at the chosen depth, the operator brings out the slats in the exit position so that their ends come together through the carrot. The carrot is thus cut at its base and it remains dwarf held in the tube by the slats during extraction of the device. The rupture of the core is therefore carried out in a safe manner and the core is positively held in the tube after this rupture.

L'invention sera bien comprise a la lecture de la description suivante faite en se référant au dessin annexé dans lequel: - la figure 1 est une vue schématique à grande échelle, en coupe axiale, de la partie rotative d'un appareil selon un exemple de réalisation de 1 'in- vention, poinçon sorti, en cours de descente dans un tissu mou, - la figure 2 est analogue a la figure 1, le poinçon étant effacé en cours de forage du tissu osseux, - la figure 3 est analogue aux figures 1 et 2, a la fin du forage du tissu osseux, et - la figure 4 est une vue en coupe selon la ligne IV de la figure 1. The invention will be clearly understood on reading the following description made with reference to the appended drawing in which: - Figure 1 is a large-scale schematic view, in axial section, of the rotary part of an apparatus according to an example embodiment of the invention, punch out, during descent into soft tissue, - Figure 2 is similar to Figure 1, the punch being erased during drilling of bone tissue, - Figure 3 is similar in Figures 1 and 2, at the end of the drilling of the bone tissue, and - Figure 4 is a sectional view along line IV of Figure 1.

L'appareil selon l'invention comrpend un tube 1 muni d'une couronne tronconique dentée externe 2 engrenant avec un pignon conique 3 solidaire d'un arbre 4 entraîné par un moteur électrique ( non représenté). L'entraîne ment, c#andé par un interrupteur , par exemple à pédale, est régulé élec troniqueeent pour assurer une vitesse de rotation convenable du tube 1 pour ne pas entraîner de détérioration des tissus.The apparatus according to the invention comprises a tube 1 provided with a tapered external toothed crown 2 meshing with a bevel gear 3 secured to a shaft 4 driven by an electric motor (not shown). The drive, c # anded by a switch, for example a pedal, is electronically controlled to ensure a suitable rotation speed of the tube 1 so as not to cause tissue damage.

L'extrémité 5 du tube 1 opposée d la couronne 2 est coupante, de préférence munie de dents.The end 5 of the tube 1 opposite the crown 2 is cutting, preferably provided with teeth.

Un tube 6, a section extérieure carrée, est soudé le long de ses arêtes 7 à l'intérieur du tube 1 (figure 4). L'extrémité 8 du tube 6 est dans le même plan radial que 1 'extrémité 5 du tube 1. Elle est de préférence égale ment munie de dents. A tube 6, with a square outer section, is welded along its edges 7 inside the tube 1 (Figure 4). The end 8 of the tube 6 is in the same radial plane as the end 5 of the tube 1. It is preferably also provided with teeth.

Dans chacun des espaces annulaires ménagés entre le tube 1 et le tube 6 coulisse une lamelle 9 en acier à ressort qui comporte une pliure 10. Les quatre lamelles 9 sont solidaires par une bague 11 qui comporte un ergot
radial traversant une fente axiale(non représentés) du tube 1 pour permettre un coulissernnt axial de la bague 11 et des lamelles 9 entre une position de sortie des lamelles ( figure 1 ) et une position rentrée ( figure 2 ) dans chacune desquelles l'ensemble mobile 9 - 11 est maintenu par des moyens convenables, par exemple par encliquetage.In each of the annular spaces formed between the tube 1 and the tube 6 slides a strip 9 made of spring steel which has a fold 10. The four strips 9 are secured by a ring 11 which comprises a lug
radial passing through an axial slot (not shown) of the tube 1 to allow axial sliding of the ring 11 and the lamellae 9 between an exit position of the lamellae (FIG. 1) and a retracted position (FIG. 2) in each of which the assembly mobile 9 - 11 is maintained by suitable means, for example by snap-fastening.

L'utilisation de l'appareil se fait comme suit: Les lamelles 9 étant sorties leurs extrémités forment un poinçon 12. La rotation du tube 1 entraîne en rotation les lamelles 9 et le poinçon 12 traverse les tissus mous 13 (figure 1) en formant le passage du tube 1. Aucun tissu mou ne pénètre entre les lamelles 9 du fait de la fermeture du poinçon 12. De rtfre, les tissus mous ne pénètrent pas entre les tubes 1 et 6 du fait de la présence des lamelles 9. The use of the device is as follows: The slats 9 having left their ends form a punch 12. The rotation of the tube 1 rotates the slats 9 and the punch 12 passes through the soft tissues 13 (Figure 1) forming the passage of the tube 1. No soft tissue enters between the lamellae 9 due to the closing of the punch 12. In rtfre, soft tissue does not penetrate between the tubes 1 and 6 due to the presence of the lamellae 9.

Dès que l'opérateur sent que le poinçon 12 est arrivé au tissu osseux qui doit faire l'objet de la biopsie, il fait remonter la bague 11 en position rentrée des lamelles 9, lesdites lamelles se déformant élastiquement au niveau de leur pliure 10. As soon as the operator feels that the punch 12 has arrived at the bone tissue which is to be the subject of the biopsy, he brings the ring 11 back into the retracted position of the strips 9, said strips being elastically deformed at their fold 10.

En faisant tourner le tube 1, les extrémités coupantes 5 et 8 des tubes 1 et 6 découpent dans le tissu osseux 14 une carotte cylindrique 15 (figure 2). L'opérateur détermine è chaque instant la profondeur d'enfonce ment dans le tissu osseux grâce à une jauge graduée16montée librement coulissante l'intérieur du tube 6 et qui est en appui sur la carotte 15.By rotating the tube 1, the cutting ends 5 and 8 of the tubes 1 and 6 cut from the bone tissue 14 a cylindrical core 15 (FIG. 2). The operator determines at all times the depth of insertion into the bone tissue using a graduated gauge 16 mounted freely sliding inside the tube 6 and which is supported on the core 15.

que quel'opérateur a atteint la profondeur désirée déterminée par la longueur de remontée de la jauge 16, il fait coulisser è nouveau la bague 11 vers la position de sortie des lamelles 9. Au cours de ce mouvement (figure 3), le tube 1 pouvant de préférence être entraîné en rotation, les lamelles 9 viennent, par la libération de leur pliure lO,reformer le poinçon 12 en pénétrant obliquement dans la carotte 15. Celle-ci est séparée du tissu osseux 14 de manière stre et efficace, sans mouvement transversal de l'appareil. that the operator has reached the desired depth determined by the ascent length of the gauge 16, he again slides the ring 11 towards the exit position of the slats 9. During this movement (FIG. 3), the tube 1 preferably being able to be driven in rotation, the strips 9 come, by releasing their fold 10, reform the punch 12 by penetrating obliquely into the core 15. The latter is separated from the bone tissue 14 in a sterile and efficient manner, without movement transverse of the device.

L'opérateur sort ensuite l'appareil, le poinçon 12, qui reste fermé, empêchant la carotte 15 de sortir du tube 6. Pour libérer la carotte 15, il suffit ensuite de faire remonter la bague 11 en position d'effa ~ment des lamelles 6. The operator then takes out the device, the punch 12, which remains closed, preventing the core 15 from coming out of the tube 6. To release the core 15, it is then sufficient to raise the ring 11 in the position of effa ~ ment of slats 6.

Dans une forme de réalisation assurant une asepsie totale, l'ensemble pivotant 1,2,6,9 est échangé a chaque opération. De préférence, les la nielles 9 ont une section circulaire. In an embodiment ensuring total asepsis, the swivel assembly 1,2,6,9 is exchanged at each operation. Preferably, the nielles 9 have a circular section.

Claims (7)

REVENDICATIONS 1.- Appareil a biopsie osseuse du type ccoprenant un tube (1, muni d'une extrémité coupante (5) et entraîné en rotation par un moteur, l'extrémité d'un poinçon (12) logé dans ledit tube (1) faisant saillie au-delà de ladite extrémité coupante (5) pendant la traversée des tissus mous (13) et étant effacée pendant le forage du tissu osseux (14N caractérisé par le fait que ladite extrémité du poinçon (12) est formée par une plu ralité de lamelles mEtalliques (9) a extrémité pliées (10) coulissant si- multandment a l'intérieur du tube rotatif (I) entre une position de sortie dans laquelle lesdites lamelles (9) forment, du fait de leur pliure (10), une pointe (12) en saillie à l'extrémité du tube rotatif (1) et une position effacée dans laquelle lesdites lamelles (9) sont logées a l'intérieur du tube (1) et de formées élastiquement de manière que leur extrémité originellement pliée soit venue dans le prolongement du reste de la lamelle (9).1.- Bone biopsy device of the cc type taking a tube (1, provided with a cutting end (5) and driven in rotation by a motor, the end of a punch (12) housed in said tube (1) making protruding beyond said cutting end (5) during the passage of soft tissue (13) and being erased during drilling of bone tissue (14N characterized in that said end of the punch (12) is formed by a plurality of metal lamellae (9) with folded ends (10) sliding so-multandment inside the rotary tube (I) between an exit position in which said lamellae (9) form, due to their fold (10), a point (12) protruding at the end of the rotary tube (1) and a retracted position in which said lamellae (9) are housed inside the tube (1) and formed elastically so that their originally bent end has come in line with the rest of the strip (9). 2.- Appareil selon la revendication 1, caractérisé par le fait que lesdites lamelles (9) coulissent entre la périphérie interne du tube rotatif (1) et la périphérie externe d'un tube intérieur (6) à section extérieure carrée soudé le long de ses aretes (7) au tube rotatif (1), et les lamelles (9) sont au nombre de quatre.2.- Apparatus according to claim 1, characterized in that said strips (9) slide between the inner periphery of the rotary tube (1) and the outer periphery of an inner tube (6) with square outer section welded along its edges (7) to the rotary tube (1), and the lamellae (9) are four in number. 3.- Appareil selon l'une des revendications 1 et 2, caractérisé par le fait que lesdites lamelles (9) sont réunies par une bague (11) coulissant à 1 lin- térieur du tube rotatif (1). 3.- Apparatus according to one of claims 1 and 2, characterized in that said strips (9) are joined by a ring (11) sliding 1 inside the rotary tube (1). 4.- Appareil selon la revendication 3, caractérisé par le fait que ladite bague (11) comporte un ergot radial traversant une fente longitudinale du tube coulissant (1), des moyens de verrouillage assurant le maintien dudit ergot à chaque extrémité de ladite fente. 4.- Apparatus according to claim 3, characterized in that said ring (11) comprises a radial lug passing through a longitudinal slot of the sliding tube (1), locking means ensuring the maintenance of said lug at each end of said slot. 5.- Appareil selon l'une des revendications 1 à 4, caractérisé par le fait qu'une jauge (16) coulisse librement à l'intérieur des lamelles (9). 5.- Apparatus according to one of claims 1 to 4, characterized in that a gauge (16) slides freely inside the lamellae (9). 6.- Appareil selon l'une des revendications 1 à 5, caractérisé par le fait que les lamelles (9) ont une section courbe.6.- Apparatus according to one of claims 1 to 5, characterized in that the blades (9) have a curved section. 7.- Appareil selon l'une des revendications la 6, caractérisé par le fait que l'ensemble du tube rotatif (1) et des lamelles (9) est à usage unique. 7.- Apparatus according to one of claims la 6, characterized in that the assembly of the rotary tube (1) and the slats (9) is for single use.
FR8701582A 1987-02-10 1987-02-10 Bone biopsy apparatus Withdrawn FR2610508A1 (en)

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FR8701582A FR2610508A1 (en) 1987-02-10 1987-02-10 Bone biopsy apparatus

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111828A (en) * 1990-09-18 1992-05-12 Peb Biopsy Corporation Device for percutaneous excisional breast biopsy
FR2687303A1 (en) * 1992-02-19 1993-08-20 Burgio Vito Lelio Device, complementary to any ordinary needles, for transcutaneous biopsy of compact tissue, especially of osteomedullary tissue
US5353804A (en) * 1990-09-18 1994-10-11 Peb Biopsy Corporation Method and device for percutaneous exisional breast biopsy
US5709697A (en) * 1995-11-22 1998-01-20 United States Surgical Corporation Apparatus and method for removing tissue
EP0852127A1 (en) * 1997-01-03 1998-07-08 Gallini S.R.L Biopsy device
US5782775A (en) * 1995-10-20 1998-07-21 United States Surgical Corporation Apparatus and method for localizing and removing tissue
EP0720442A4 (en) * 1993-09-20 1998-08-05 Boston Scient Corp Multiple biopsy sampling coring device
US5817034A (en) * 1995-09-08 1998-10-06 United States Surgical Corporation Apparatus and method for removing tissue
US5823971A (en) * 1993-10-29 1998-10-20 Boston Scientific Corporation Multiple biopsy sampling coring device
US5833628A (en) * 1996-04-24 1998-11-10 Yuan; Hansen Graduated bone graft harvester
US5857982A (en) * 1995-09-08 1999-01-12 United States Surgical Corporation Apparatus and method for removing tissue
US6436054B1 (en) 1998-11-25 2002-08-20 United States Surgical Corporation Biopsy system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU174758A1 (en) * В. А. Шусь TOOL FOR PUNKING BIOPSY
US4306570A (en) * 1980-08-20 1981-12-22 Matthews Larry S Counter rotating biopsy needle
FR2585233A1 (en) * 1985-07-26 1987-01-30 Orlovic Radmila Surgical apparatus for performing biopsies and its various applications
US4651752A (en) * 1985-03-08 1987-03-24 Fuerst Erwin J Biopsy needle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU174758A1 (en) * В. А. Шусь TOOL FOR PUNKING BIOPSY
US4306570A (en) * 1980-08-20 1981-12-22 Matthews Larry S Counter rotating biopsy needle
US4651752A (en) * 1985-03-08 1987-03-24 Fuerst Erwin J Biopsy needle
FR2585233A1 (en) * 1985-07-26 1987-01-30 Orlovic Radmila Surgical apparatus for performing biopsies and its various applications

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197484A (en) * 1990-09-18 1993-03-30 Peb Biopsy Corporation Method and device for precutaneous excisional breast biopsy
US5353804A (en) * 1990-09-18 1994-10-11 Peb Biopsy Corporation Method and device for percutaneous exisional breast biopsy
US5111828A (en) * 1990-09-18 1992-05-12 Peb Biopsy Corporation Device for percutaneous excisional breast biopsy
FR2687303A1 (en) * 1992-02-19 1993-08-20 Burgio Vito Lelio Device, complementary to any ordinary needles, for transcutaneous biopsy of compact tissue, especially of osteomedullary tissue
EP0720442A4 (en) * 1993-09-20 1998-08-05 Boston Scient Corp Multiple biopsy sampling coring device
US5823971A (en) * 1993-10-29 1998-10-20 Boston Scientific Corporation Multiple biopsy sampling coring device
US6036657A (en) * 1995-09-08 2000-03-14 United States Surgical Corporation Apparatus for removing tissue
US5817034A (en) * 1995-09-08 1998-10-06 United States Surgical Corporation Apparatus and method for removing tissue
US5857982A (en) * 1995-09-08 1999-01-12 United States Surgical Corporation Apparatus and method for removing tissue
US6213957B1 (en) 1995-09-08 2001-04-10 United States Surgical Corporation Apparatus and method for removing tissue
US5782775A (en) * 1995-10-20 1998-07-21 United States Surgical Corporation Apparatus and method for localizing and removing tissue
US5709697A (en) * 1995-11-22 1998-01-20 United States Surgical Corporation Apparatus and method for removing tissue
US5833628A (en) * 1996-04-24 1998-11-10 Yuan; Hansen Graduated bone graft harvester
US6139509A (en) * 1996-04-24 2000-10-31 Yuan; Hansen Graduated bone graft harvester
US6077231A (en) * 1996-06-14 2000-06-20 United States Surgical Corporation Apparatus and method for localizing and removing tissue
US6165137A (en) * 1996-06-14 2000-12-26 United States Surgical Corporation Apparatus and method for localizing and removing tissue
EP0852127A1 (en) * 1997-01-03 1998-07-08 Gallini S.R.L Biopsy device
US6436054B1 (en) 1998-11-25 2002-08-20 United States Surgical Corporation Biopsy system

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