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WO1987005523A1 - Dispositifs tubulaires destines a etre introduits dans les orifices d'un corps - Google Patents

Dispositifs tubulaires destines a etre introduits dans les orifices d'un corps Download PDF

Info

Publication number
WO1987005523A1
WO1987005523A1 PCT/GB1987/000170 GB8700170W WO8705523A1 WO 1987005523 A1 WO1987005523 A1 WO 1987005523A1 GB 8700170 W GB8700170 W GB 8700170W WO 8705523 A1 WO8705523 A1 WO 8705523A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular
flexible tube
duct
sleeve
flexible
Prior art date
Application number
PCT/GB1987/000170
Other languages
English (en)
Inventor
Juan Jose Garcia Galarraga
Original Assignee
Siemens, Herman, Werner
Siemens, Cornelie
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 Siemens, Herman, Werner, Siemens, Cornelie filed Critical Siemens, Herman, Werner
Publication of WO1987005523A1 publication Critical patent/WO1987005523A1/fr

Links

Classifications

    • 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
    • A61M25/0119—Eversible catheters
    • 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
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421—Cannulas
    • A61B17/3431—Cannulas being collapsible, e.g. made of thin flexible material
    • 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
    • A61B90/40—Apparatus fixed or close to patients specially adapted for providing an aseptic surgical environment

Definitions

  • This invention relates to tubular devices for introduction into body orifices or ducts.
  • the body may be of any physical material, e.g. metal or plastics material, but the present invention is considered to be particularaly suited to orifices or ducts in an animal (particularly a human) body.
  • animal orifices or ducts may be oral, rectal, penile or other orifices made for surgical purposes, e.g. vascular surgery or surgery on the digestive tracts.
  • a tubular device is inserted into a body orifice to rest inside a body duct.
  • Examples include exploration of the bladder via a catheter introduced through the urethra, posterior sealing of the nasal fossae by means of an expandable probe, and general surgery (especially vascular and gastric surgery).
  • the tubular devices generally employed are rigid-walled structures having sufficient stiffness in their longitudinal direction as to enable them readily to overcome any frictional resistance encountered as they are pushed longitudinally into the body orifices or ducts. In medical applications, this gives rise to a substantial risk of infection since the external portion of a biological duct (e.g. the urethra) is usually contaminated with germs ' and these germs are drawn down with and by the tubular device into the internal portions of the duct (these internal portions being usually relatively sterile in normally healthy conditions). It is estimated that some 40% of infections arising in hospital are urinary infections of which the major cause is considered to be due to the introduction of catheters.
  • a biological duct e.g. the urethra
  • urinary infections of which the major cause is considered to be due to the introduction of catheters.
  • tubular devices have in the past necessitated frictional engagement of the wall of the body's duct or orifice and, in medical applications (e.g. with catheters, endoscopes, bronchoscopes, fibroscopes and the like), this has involved the patient in trauma and pain.
  • the tubular devices currently employed for urinary probing and exploration of the bladder are inserted via the urethra causing a rubbing on the walls of the mucous membrane of the urethra, the consequence of which is a frictional dragging effect giving rise to patient trauma.
  • Germs which are usually found in the distal portion of the urethra are thus dragged or carried towards the proximal portion and inside the bladder.
  • urinary infection which is an important cause of iatrogenic infections having serious consequences for the patient. Additional precautions therefore need to be taken to avoid these side-effects, making patient treatment more expensive and/or more painful.
  • a tubular device for introduction into a body orifice or duct comprising an elongate hollow element* of flexible material, and means for effecting said introduction by changing at least part of the flexible element from an inside-out condition to an inside-in and outside-out condition.
  • said changing is effected progressively.
  • a tubular device for introduction into a body orifice or duct comprising: an elongate tubular element of flexible material to provide, following its introduction into the body orifice or duct, an inside surface and an outside surface, support means of tubular form connected to one end of the flexible tubular element, the flexible element extending into the tubular support means in inside-out condition whereby a major part of said outside surface is disposed radially inwardly of a major part of said inside surface, and means to expel the elongate tubular element longitudinally outwards of the support means in a progressive manner from said one end thereof and such as to present said outside surface to the body orifice or duct and with said inside surface disposed internally of said outside surface.
  • a tubular device comprising a relatively rigid sleeve, means for securing to one end of the sleeve a flexible tube (e.g. of section corresponding to that of the tubular duct into which the flexible tube is to be inserted), said flexible tube being in inside-out or reversed disposition within the rigid sleeve so as to present an annular space between the sleeve and the flexible tube within in it, and tubular driving means operating from the annular space to drive said flexible tube from inside of the sleeve outwards and across the boundary or edge of -said driving means such that the sleeve is introduced into the orifice or duct without rubbing along the said orifice or duct.
  • the material placed in direct contact with the patient's tissues should be sterile
  • at least part of the tubular device is preferably of inexpensive (e.g. plastics) material so that the device may be used as as a once-only or throw-away item (i.e. a "disposable" item).
  • the flexible tube is of a natural or synthetic rubber or rubber-like material, e.g. a latex rubber or the like.
  • the sleeve is of a rigid plastics material enabling the sleeve to be manually held, i.e. used as a holder or support for said one end of the flexible tube, during said introduction of the device's flexible tube.
  • a rigid plastics material enabling the sleeve to be manually held, i.e. used as a holder or support for said one end of the flexible tube, during said introduction of the device's flexible tube.
  • Figure 1 is a schematic side view of a first embodiment of the invention
  • Figure 2a is a schematic side view of a conventional fibroscope.
  • Figure 2b_ is a schematic side view of a second embodiment of the present invention incorporating the fibroscope of Fig 2a_, and
  • Figure 3 is a schematic side view of a third embodiment of the present invention.
  • the catheter illustrated schematically in Fig. 1 is intended to be introduced into the tubular duct, for example explaining the urethral duct, of a patient. It comprises a short tube 3 (open at both ends) of relatively rigid plastics material attached to one end of an elongate tubular element 5 of a highly flexible impervious material, e.g. a natural or synthetic rubber or a suitable plastics material, and further comprises an elongate tube 1 of relatively rigid plastics material that is mounted slidably in tube 3.
  • the rigid tube 1 initially contains the flexible tube 5 in inside-out condition with the majority of its intended outer surface initially disposed inwardly of the majority of its intended inner surface.
  • the rigid tube 1 is employed to expel the flexible tube 5 and cause it to be introduced into the human body orifice or duct so as to engage the duct wall.
  • This push tube 1 comprises a forward part of hollow cylindrical form and closed rear part 2.
  • the forward cylindrical part is disposed with its open front within the annular space between the inside-out flexible tube 5 and the short tube 3.
  • the closed rear portion 2 is suitably widened or shaped to enable it to be readily pushed by the thumb in the forwards direction.
  • a fastening member 4 is provided at the forward end of the holder or support tube 3 for securing thereto the open rear (or trailing) end of flexible tube 5.
  • the majority of the flexible tube 5 is initially in a "rolled back" form within the push tube 1 so as to be disposed in inside-out condition inwardly of push tube 1.
  • the outer support or guiding tube 3 is disposed over the push tube 1 and has one end 4 secured to the outwardly-folded mouth of the flexible tube 5.
  • the front end of the assembly is placed in the orifice or mouth of the tubular duct into which it is to be inserted, and held in position by the operator holding the outer support or holding tube 3 with one hand. With the other hand the operator then pushes the push tube 1 in' the forwards direction so as to cause unrolling of the flexible tube 5 which is thus introduced progressively into the duct, applying itself (without rubbing) onto the inner wall of said tubular duct.
  • This is achieved solely by the sliding of the flexible tube 5 across the front edge 6 of said push tube.
  • this edge 6 is provided with means facilitating such sliding, e.g. a thickening of the edge 6 or the provision at this edge of rotatable means which also minimise or abviate frictional sliding across the edge 6.
  • the front part of the guide tube 3 may be provided with a frusto-conical mouth piece 7 (shown by broken lines in Fig. 1 ) to facilitate the application of the device at the inlet of the tubular duct.
  • the mouth piece 7 has a cylindrical flange 8 at the radially innermost end of its wide part.
  • the fastening member 4 comprises an annular ring encompassing the forward end of the guide tube 3 so as to define therewith a peripheral groove.
  • the flange 8 is arranged to fit into this peripheral groove together with the free end of the flexible tube 5 whereby they are both simultaneously secured by the retaining member 4.
  • Fig 2b utilises a catheter substantially similar to that of Fig 1 as a covering for a conventional fibroscope (shown schematically in Fig 2a.) for visually inspecting, and optionally sampling, an internal body location without contaminating the area with bacteria or germs (other than those already previously present at the selected location).
  • the push tube 1 has its rear end 9 secured at a suitable location to the outer surface of the fibroscope, the rear head 10 of the latter acting as the push member proper (equivalent to portion 2 in Fig 1).
  • the flexible tube 5 is initialy disposed, as in the previous case, in inside-out condition inside said pusher tube 1 , and the mouth or free end of the flexible tube 5 is also secured on the front edge of the guide tube 3, which may also have the same shape as in the device of Fig. 1.
  • Fig. 3 illustrates an embodiment wherein the push tube 1 has been replaced by a piston 11 which slides in seal-tight manner inside the cylindrical guide tube 3, this tube 3 being filled with a suitable liquid or gas.
  • the flexible tube 5 is disposed, as before, in inside-out condition within the tube 3, the mouth or free end of tube 5 being secured in the same manner as previously mentioned to the front end of the guide tube 3.
  • pushing forward the piston 11 compresses the liquid or gas contained in the guide tube which, in turn, pushes the flexible tube 5 forward and outwardly of the guide tube so that tube 5 progressively adopts the shape of the body's orifice or duct into which it is being introduced or inserted.
  • FIG. 3 An embodiment similar to that of Fig 3 is considered suitable for use as a probe for sealing the nasal fossae (posterior sealing).
  • the tubular device by utilising a driving liquid or gas (air) pushed by a piston, facilitates that (when the insertion has been completed) the probe can expand to the extent of the volume of the cavity for an intimate and uniform contact to be achieved between the material introduced and the mucous membrane of the nasal fossae. This ensures the provision of an adequate and even pressure which makes it possible to stop the haemorrhage.
  • each of the above-described embodiments of the invention provides that frictional rubbing (by dragging through of the tubular device) does not occur between the wall of the flexible tube and the wall of the orifice or duct into which the flexible tube is inserted, but rather that any frictional contact occurs inside the device.
  • each of the above-described embodiments of the invention provides for insertion of a flexible tube inside a tubular duct by means of a simple progressive contact of the facing surfaces of same, without any frictional rubbing taking place, penetration being substantially without the adherence or friction hindering insertion, particularly where the diameters of said tubes are similar.
  • utilisation of the above-described embodiments of the present invention may possibly eliminate the relative longitudinal displacement of the flexible tube and the duct into which it is inserted, and/or (where the duct is the urethra) possibly overcome the narrowing constituted by the vesico-urethral sphincter.
  • each of the above-described embodiments of the present invention can be readily removed, when necessary, from the body orifice or duct by simply pulling tube 3 outwards.
  • withdrawal might perhaps be achieved by inserting a narrow bore tubular element right down into tube 5, the element having a small opening at its leading end which is closed off by the flexible tube so that by evacuating the narrow bore of the tubular element and withdrawing the element outwardly, the flexible tube 5 is again rolled back into inside-out condition as it is withdrawn from the orifice or duct with the said element.
  • embodiments of the present invention may be applied not only in medicine (for example probing, fibroscopy, sampling, surgery (e.g. vascular and digestive surgery) and other medical techniques utilising urinary and other catheters, bronchoscopes, fibroscopes, and digestive, pulmonary and other endoscopes), but also has corresponding and/or similar applications in veterinary practice as well as numerous applications in industry.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Endoscopes (AREA)
  • Pipe Accessories (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Un dipositif tubulaire destiné à être introduit dans un orifice ou un conduit d'un corps, comprend un élément tubulaire allongé (5) en matériau flexible, qui, après introduction dans l'orifice ou le conduit du corps, présente une surface interne ou une surface externe, un organe de support (3) de forme tubulaire relié à l'une des extrémités de l'élément tubulaire flexible (5), lequel s'étend à l'intérieur et à l'extérieur de l'organe de support tubulaire, une majeure partie de ladite surface externe étant disposée de façon radiale vers l'intérieur d'une majeure partie de ladite surface interne. Ledit dispositif tubulaire comprend en outre un organe (1) destiné à pousser l'élément tubulaire allongé dans un sens longitudinal hors de l'organe de support de façon progressive à partir de l'extrémité de l'élément tubulaire flexible à laquelle est relié l'organe de support de façon à mettre ladite surface externe en présence de l'orifice ou du conduit du corps, ladite surface interne étant disposée à l'intérieur par rapport à la surface externe.
PCT/GB1987/000170 1986-03-13 1987-03-12 Dispositifs tubulaires destines a etre introduits dans les orifices d'un corps WO1987005523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES292931U 1986-03-13
ES1986292931U ES292931Y (es) 1986-03-13 1986-03-13 Dispositivo para introducir sin arrastre o rozamiento un tubo flexible dentro de un conducto tubular.

Publications (1)

Publication Number Publication Date
WO1987005523A1 true WO1987005523A1 (fr) 1987-09-24

Family

ID=8440218

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1987/000170 WO1987005523A1 (fr) 1986-03-13 1987-03-12 Dispositifs tubulaires destines a etre introduits dans les orifices d'un corps

Country Status (4)

Country Link
EP (1) EP0259429A1 (fr)
AU (1) AU7087587A (fr)
ES (1) ES292931Y (fr)
WO (1) WO1987005523A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306111A (en) * 1995-10-14 1997-04-30 William Barrie Hart Expandable hydraulic oversleeve for advancing an endoscope into a body cavity
WO1998000191A1 (fr) * 1996-07-01 1998-01-08 Rtc, Inc. Dispositif medical a gonflage variable
WO2001070297A2 (fr) 2000-03-23 2001-09-27 Daniel Eduard Kleiner Dispositif renfermant un element creux a positionner le long de la cavite corporelle d'un patient et technique de positionnement
WO2009054720A2 (fr) * 2007-10-22 2009-04-30 Iq+ Investments N.V. Cathéter à liquide, et particulièrement cathéter urinaire, procédé et dispositif d'administration
WO2009142605A1 (fr) * 2008-05-21 2009-11-26 Univerza V Ljubljani Dispositif pour l'introduction atraumatique d'un moyen à l'intérieur d'un organe tubulaire d'un être vivant
CN109803713A (zh) * 2016-08-31 2019-05-24 里奥卡斯医疗器械公司 导管的管
EP3622894A1 (fr) * 2013-12-12 2020-03-18 Case Western Reserve University Dispositif de collecte d'un échantillon biologique
US11400257B2 (en) 2017-11-13 2022-08-02 Teleflex Life Sciences Pte. Ltd. Frictionless catheter
US12262879B2 (en) 2020-06-16 2025-04-01 Case Western Reserve University Device for biological cell collection and method of use

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1958561A1 (de) * 1968-11-21 1970-06-11 American Hospital Supply Corp Medizinisches Instrument
FR2420351A1 (fr) * 1978-03-24 1979-10-19 Bourdot Alain Dispositif de sondage endouretral
DE2845202A1 (de) * 1978-07-03 1980-04-30 Dieter Von Zeppelin Diagnosegeraet zur frueherkennung von krebszellen in der gebaermutter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1958561A1 (de) * 1968-11-21 1970-06-11 American Hospital Supply Corp Medizinisches Instrument
FR2420351A1 (fr) * 1978-03-24 1979-10-19 Bourdot Alain Dispositif de sondage endouretral
DE2845202A1 (de) * 1978-07-03 1980-04-30 Dieter Von Zeppelin Diagnosegeraet zur frueherkennung von krebszellen in der gebaermutter

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306111A (en) * 1995-10-14 1997-04-30 William Barrie Hart Expandable hydraulic oversleeve for advancing an endoscope into a body cavity
WO1998000191A1 (fr) * 1996-07-01 1998-01-08 Rtc, Inc. Dispositif medical a gonflage variable
WO2001070297A2 (fr) 2000-03-23 2001-09-27 Daniel Eduard Kleiner Dispositif renfermant un element creux a positionner le long de la cavite corporelle d'un patient et technique de positionnement
EP1265670A2 (fr) * 2000-03-23 2002-12-18 Daniel Eduard Kleiner Dispositif renfermant un element creux a positionner le long de la cavite corporelle d'un patient et technique de positionnement
EP1265670A4 (fr) * 2000-03-23 2005-06-01 Daniel Eduard Kleiner Dispositif renfermant un element creux a positionner le long de la cavite corporelle d'un patient et technique de positionnement
US8758329B2 (en) 2007-10-22 2014-06-24 Iq+ Investments N.V. Liquid catheter, particularly a urinary catheter, method and delivery device
WO2009054720A3 (fr) * 2007-10-22 2009-11-19 Iq+ Investments N.V. Cathéter à liquide, et particulièrement cathéter urinaire, procédé et dispositif d'administration
WO2009054720A2 (fr) * 2007-10-22 2009-04-30 Iq+ Investments N.V. Cathéter à liquide, et particulièrement cathéter urinaire, procédé et dispositif d'administration
US9233232B2 (en) 2007-10-22 2016-01-12 Iq + Investments N.V. Liquid catheter, particularly a urinary catheter, method and delivery device
WO2009142605A1 (fr) * 2008-05-21 2009-11-26 Univerza V Ljubljani Dispositif pour l'introduction atraumatique d'un moyen à l'intérieur d'un organe tubulaire d'un être vivant
EP3622894A1 (fr) * 2013-12-12 2020-03-18 Case Western Reserve University Dispositif de collecte d'un échantillon biologique
US10660621B2 (en) 2013-12-12 2020-05-26 Case Western Reserve University Device for collecting a biological sample
EP3079598B1 (fr) * 2013-12-12 2022-03-16 Case Western Reserve University Dispositif de collecte un échantillon biologique
CN109803713A (zh) * 2016-08-31 2019-05-24 里奥卡斯医疗器械公司 导管的管
CN109803713B (zh) * 2016-08-31 2021-05-11 里奥卡斯医疗器械公司 导管的管及其制造方法
US11400257B2 (en) 2017-11-13 2022-08-02 Teleflex Life Sciences Pte. Ltd. Frictionless catheter
US12262879B2 (en) 2020-06-16 2025-04-01 Case Western Reserve University Device for biological cell collection and method of use

Also Published As

Publication number Publication date
ES292931U (es) 1987-01-01
ES292931Y (es) 1987-08-16
EP0259429A1 (fr) 1988-03-16
AU7087587A (en) 1987-10-09

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