[go: up one dir, main page]

WO2008062451A2 - Instrument chirurgical à surface échogène - Google Patents

Instrument chirurgical à surface échogène Download PDF

Info

Publication number
WO2008062451A2
WO2008062451A2 PCT/IN2007/000431 IN2007000431W WO2008062451A2 WO 2008062451 A2 WO2008062451 A2 WO 2008062451A2 IN 2007000431 W IN2007000431 W IN 2007000431W WO 2008062451 A2 WO2008062451 A2 WO 2008062451A2
Authority
WO
WIPO (PCT)
Prior art keywords
surgical instrument
needle
surgical
grooves
echogenic
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IN2007/000431
Other languages
English (en)
Other versions
WO2008062451A3 (fr
Inventor
Gautam Allahbadia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2008062451A2 publication Critical patent/WO2008062451A2/fr
Publication of WO2008062451A3 publication Critical patent/WO2008062451A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Clinical applications
    • A61B8/0833—Clinical applications involving detecting or locating foreign bodies or organic structures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3401—Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Clinical applications
    • A61B8/0833—Clinical applications involving detecting or locating foreign bodies or organic structures
    • A61B8/0841—Clinical applications involving detecting or locating foreign bodies or organic structures for locating instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3925—Markers, e.g. radio-opaque or breast lesions markers ultrasonic

Definitions

  • an echogenic surgical instrument for use in ultrasonic imaging to facilitate real-time monitoring of the position and location of the surgical instrument during surgical procedures. More particularly, the invention relates to an echogenic surface needle covered with entrapped gas column for facilitating monitoring of the needle as it is positioned within the body of a patient.
  • ultrasonic imaging has become widely used and accepted in clinical and medical diagnosis, particularly in obstetrics, gynecology and urology. Physicians often use ⁇ ltrasound to image a wide variety of medical abnormalities including malignant and non- malignant cysts and tumors and fetal status in uterus. In such applications it is often desirable for a physician to have an image of a surgical instrument which been positioned within the body of a patient Ultrasonic imaging is also used for real-time monitoring of surgical instrument, for example, needle location during medical procedures such as ovum pickup, ovarian puncture, embryo transfer, fetal blood sampling, amniocentesis, tissue aspiration biopsy and core biopsy.
  • Echogenicity is referred to relative, intrinsic or innate degree of extent that a surface reflects incident ultrasound wave energy directly back to sensor, which is proximal to the source or emitter.
  • the degree of echogenicity is directly interdependent on two primary factors: (1) the density of the 'target' receiving and reflecting the sound energy, and (2) the elasticity of the 'target' being ultrasonically imaged. These ⁇ two factors are, in fact, professed to be the essential factors why air and/or water in tissue or organs are more echogenic or alter the echogenicity. The same is applicable to dense metal, such as shaft of a needle.
  • US Patent No. 4,401,124 outlines some of the problems associated with monitoring the insertion and guidance of needles and other instruments.
  • the patent teaches a proposed solution by providing, in an ultrasound pulse-echo imaging system, a diffracting grating disposed on the surface of the surgical instrument.
  • the diffraction grating exemplified to have a specified distance between the depths of adjacent grooves, that distance being a function of various parameters including the center wavelength of the transducer and the angle between the incident beam and a line along the surface of the instrument and perpendiculars to the grooves.
  • the reference also discloses other attempts directed toward monitoring the location of a surgical instrument, such as a needle, inside the body as well as discussing their drawbacks.
  • Another US Patent No. 5,201,314 refers about an echogenic material in which small pellets of other material is used to make a density difference from the surrounding tissues. Such material with different acoustic impedance is mixed with the material right in the extrusion process or blasted later on onto it.
  • One problem with this approach is that the interface layer is generated during the extrusion process for forming a plastic device, or by soldering, or ion beam deposition, which is inapplicable to many devices, and is expensive and difficult to control.
  • the differences in acoustical properties between glass or metal a ⁇ d body cavities are not very large, so echogenicity is not greatly enhanced.
  • the described devices are not smooth since the echogenicity is produced either by indentations in the surface or the addition of metal or glass balls of diameter greater than the thickness of the interface layer.
  • the presence of the particles complicates the manufacturing process, and may weaken the surface the device, which can lead to sloughing of particles, device failure, or instability of the desired effect.
  • a surgical instrument having an echogenic surface in use with ultrasonic imaging for enhancing real-time monitoring of the position and location of the surgical instrument.
  • the surgical instrument of the present invention preferably has relatively high practical echogenicity, useful in avoiding complications such as poor ultrasonic imaging during surgical procedures.
  • an echogenic surgical needle which is covered with the entrapped gas column to enable a physician to precisely needle position within body of a patient.
  • an echogenic surface surgical needle for facilitating real-time imaging and monitoring of the needle position using conventionally ultrasonic imaging technology/system, where the needle is inserted and guided through the body of a patient for medical procedures such as ovum pickup, fetal blood sampling, amniocentesis or tissue aspiration biopsy.
  • a specific structural surface portion of the needle is removed and grooved in specific pattern, which is coated with non-sagging material, converting groove into a gas column.
  • FlG.1 is an top view of virgin needle which no grooves, having a specific cut at the distal end which is well-known in the prior art.
  • Ultrasonic beam (8) is incident on the needle, which is reflected (9) back. Because there is no specific treatment, there is no beam reflected in direction (19)
  • FIG.2 is an top view of needle having longitudinal grooves (10), covered with a thin transparent polymer (15).
  • FiG.3 is an top view of needle with circumferential groove (45). Ultrasound beam (40) is incident on the gas column, and beam is reflected in all directions (42). The needle is covered with a thin sheet (46) of biocompatible polymer.
  • Fig 4 represents the principle of working of ultrasound imaging technology.
  • the incident beam (31) Is partly transmitted (33) and partly reflected (32).
  • the standard ultrasonic imaging system employed in the medical field is based upon the pulse-echo method wherein pulses of ultrasonic energy are periodically generated by a sizable piezoelectric transducer. Each short pulse of ultrasonic energy is focused to a narrow beam to pass through the body of a patient wherein it eventually encounters the desired 'target' surface. A portion of the ultrasonic energy is reflected back from the target surface to the ultrasound senor for correlation and interpretation.
  • FIG.1 represents a standard, virgin needle (1) made of an appropriate material such as stainless steei. Needle (1) has smooth outer surface (3) and bore (2), commonly use in the medical field. Needle (1 ) is more echogenic when it is at a right angle to incident ultrasonic beams (8). The majority of the reflected beams (9) are picked up by a sensor, located proximal to the source or emitter of incident beams (8). As shown in Fig 4, the incident beam (31) is partly reflected (32) and partly transmitted (33). The amount of beam reflected proportional to the ratio of the density difference D1/ D2. When needle (1) is oriented at an angle to the emitter and sensor, the density of direct echoes returned or reflected to the sensor, decreases.
  • needle are prepared in accordance with the preferred embodiment of the present invention.
  • a virgin needle such as needle (1) shown in FIG. 1 is cut superficially into different shapes such as shown in FIG 2 and 3.
  • FIG 2 shows superficial longitudinal grooves made on needle (10).
  • the smooth surface (3) will show normal reflectance under ultrasound.
  • the grooves (10) and (45) are covered with a thin polymeric material (15) and (46) respectively, which is essentially biocompatible.
  • the material should be thin enough not to disturb the surrounding tissue while inserting such needle into the body cavity or there should be proper contours made to that effect.
  • the material may be coated by dip coating or a thin sheet may be wrapped around the needle to create gas column. Dipping the grooved need ⁇ e into a high viscosity polymer solution containing tiny air bubbles can also create gas column. Due to high viscosity the polymer will not flow into the grooves creating gas columns.
  • the grooves can be made circumferential.
  • the advantage of this shape is that the needle can be seen under ultrasound from any direction. There are no black spots when used in this shape. Other shapes such as spiral grooves and dots can also be developed. As shown in Fig 3 due to the gas columh, the ultrasound wave (40) gets reflected in all directions (42).
  • the advantage of this column is that the needle can be held in any desired direction, giving same echogenic reflection.
  • gas column can be made up of any gas or vacuum.
  • the gas column may be created in the material of construction of the surgical instrument which and that would result in similar effect of enhancing the echogenecity. Also it is contemplated that where gas column is trapped by any means other than disclosed here the needle would have the same echogenic effect.
  • the effective gas column dimension can be as small as 5 microns to as large as the circumference of the needle.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Anesthesiology (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

L'invention porte sur un instrument chirurgical à surface échogène, et plus particulièrement sur une aiguille chirurgicale à surface échogène s'utilisant en imagerie par ultrasons et fournissant une image en temps réel et permettant de suivre l'aiguille pendant une opération chirurgicale. Au moins une partie d'une surface structurelle de l'aiguille comprend des rainures piègeant une colonne du gaz.
PCT/IN2007/000431 2006-09-07 2007-09-06 Instrument chirurgical à surface échogène Ceased WO2008062451A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1431/MUM/2006 2006-09-07
IN1431MU2006 2006-09-07

Publications (2)

Publication Number Publication Date
WO2008062451A2 true WO2008062451A2 (fr) 2008-05-29
WO2008062451A3 WO2008062451A3 (fr) 2008-07-10

Family

ID=39370777

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2007/000431 Ceased WO2008062451A2 (fr) 2006-09-07 2007-09-06 Instrument chirurgical à surface échogène

Country Status (1)

Country Link
WO (1) WO2008062451A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010144362A1 (fr) 2009-06-12 2010-12-16 Wilson-Cook Medical Inc. Dispositif de placement endoscopique d'endoprothèse guidé par ultrasons et procédé afférent
US8480592B2 (en) 2009-12-23 2013-07-09 C. R. Bard, Inc. Biopsy probe mechanism having multiple echogenic features
US9750532B2 (en) 2013-05-31 2017-09-05 Cook Medical Technologies Llc Access needles and stylet assemblies
US9872666B2 (en) 2013-03-14 2018-01-23 Muffin Incorporated Echogenic surface using reuleaux triangle
US9980699B2 (en) 2014-09-12 2018-05-29 Cook Medical Technologies Llc Shaped echogenic needle groove

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2425724C3 (de) * 1974-05-28 1979-09-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Punktionskanüle
US4582061A (en) * 1981-11-18 1986-04-15 Indianapolis Center For Advanced Research, Inc. Needle with ultrasonically reflective displacement scale
US5081997A (en) * 1989-03-09 1992-01-21 Vance Products Incorporated Echogenic devices, material and method
US5383466A (en) * 1993-05-14 1995-01-24 Becton, Dickinson And Company Instrument having enhanced ultrasound visibility
US6106473A (en) * 1996-11-06 2000-08-22 Sts Biopolymers, Inc. Echogenic coatings
EP1132049B1 (fr) * 2000-03-09 2004-09-08 Angiodynamics, Inc. Aiguille chirurgicale visible par ultrasone
JP2006271874A (ja) * 2005-03-30 2006-10-12 Toshiba Corp 超音波ガイド下穿刺針

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010144362A1 (fr) 2009-06-12 2010-12-16 Wilson-Cook Medical Inc. Dispositif de placement endoscopique d'endoprothèse guidé par ultrasons et procédé afférent
US8480592B2 (en) 2009-12-23 2013-07-09 C. R. Bard, Inc. Biopsy probe mechanism having multiple echogenic features
US9456806B2 (en) 2009-12-23 2016-10-04 C.R. Bard, Inc. Biopsy probe mechanism having multiple echogenic features
US10299761B2 (en) 2009-12-23 2019-05-28 C. R. Bard, Inc Biopsy probe mechanism having multiple echogenic features
US11553898B2 (en) 2009-12-23 2023-01-17 C.R. Bard, Inc. Biopsy probe mechanism having multiple echogenic features
US9872666B2 (en) 2013-03-14 2018-01-23 Muffin Incorporated Echogenic surface using reuleaux triangle
US10004475B2 (en) 2013-03-14 2018-06-26 Muffin Incorporated Echogenic surfaces with pressed-dimple formations
US9750532B2 (en) 2013-05-31 2017-09-05 Cook Medical Technologies Llc Access needles and stylet assemblies
US9980699B2 (en) 2014-09-12 2018-05-29 Cook Medical Technologies Llc Shaped echogenic needle groove

Also Published As

Publication number Publication date
WO2008062451A3 (fr) 2008-07-10

Similar Documents

Publication Publication Date Title
US5820554A (en) Ultrasound biopsy needle
US4869259A (en) Echogenically enhanced surgical instrument and method for production thereof
US5048530A (en) Method of using an amniocentesis needle with improved sonographic visibility
US4977897A (en) Amniocentesis needle with improved sonographic visibility
US6053870A (en) Ultrasonic visible surgical needle
CA1186399A (fr) Augmentation du pouvoir de reflexion d'une aiguille pour les biopsies
US6860856B2 (en) Echogenic surface for enhanced ultasonic visibility
CA2022464C (fr) Dispositifs echogeniques, materiel et methode
US6530888B2 (en) Imaging probes and catheters for volumetric intraluminal ultrasound imaging
US20090177114A1 (en) Echogenic needle aspiration device
US9980699B2 (en) Shaped echogenic needle groove
EP1132049B1 (fr) Aiguille chirurgicale visible par ultrasone
WO2008062451A2 (fr) Instrument chirurgical à surface échogène
WO2008020157A1 (fr) Imagerie acoustique d'un dispositif oblong pénétrant dans un objet
CN114145713A (zh) 一种双频内窥导管及成像装置
EP3946491B1 (fr) Utilisation d'un revêtement échogène pour l'imagerie ultrasonore de dispositifs médicaux dans des couches de tissu profond
JP4339539B2 (ja) 超音波用穿刺針
CN112823756B (zh) 超声引导神经阻滞穿刺针
NL2022839B1 (en) An echogenic coating for ultrasound imaging of medical devices in deep tissue layers.
KR100412011B1 (ko) 중재적 초음파 분야에서 사용되는 침상 도구
CN116999128A (zh) 超声引导一次性穿刺针
JP2022136918A (ja) 穿刺針

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07866708

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 07866708

Country of ref document: EP

Kind code of ref document: A2