EP1841473A2 - Systeme d'aspiration pour dispositifs medicaux orthopediques - Google Patents

Systeme d'aspiration pour dispositifs medicaux orthopediques

Info

Publication number
EP1841473A2
EP1841473A2 EP06717443A EP06717443A EP1841473A2 EP 1841473 A2 EP1841473 A2 EP 1841473A2 EP 06717443 A EP06717443 A EP 06717443A EP 06717443 A EP06717443 A EP 06717443A EP 1841473 A2 EP1841473 A2 EP 1841473A2
Authority
EP
European Patent Office
Prior art keywords
filter
aspiration
restrictive
aspiration tube
tube
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.)
Withdrawn
Application number
EP06717443A
Other languages
German (de)
English (en)
Inventor
Alex Urich
Armand Maaskamp
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.)
Surgin Surgical Instrumentation Inc
Original Assignee
Surgin Surgical Instrumentation Inc
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 Surgin Surgical Instrumentation Inc filed Critical Surgin Surgical Instrumentation Inc
Priority claimed from US11/326,504 external-priority patent/US7528130B2/en
Publication of EP1841473A2 publication Critical patent/EP1841473A2/fr
Withdrawn legal-status Critical Current

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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/79—Filters for solid matter

Definitions

  • the present application relates to an aspiration system to be used in surgery where high amounts of sterile fluids are circulated through the human body as for example .orthopedic surgery .
  • Some orthopedic medical procedures produce particles or other debris that must be removed from the body .
  • the surgeon may couple an aspiration tube to the surgical site .
  • the aspiration tube which pulls the debris from the body, is typically connected to a canister, which is connected to a suction tube connected to wall suction.
  • An irrigation fluid is introduced to the body to continuously irrigate the surgical site .
  • An infusion pump is typically required to offset the high flow created by the hospital vacuum line . Infusion pumps are relatively expensive and are not always available to the surgeon .
  • U. S . Pat . No . 6 , 478 , 781 issued to Urich et al . discloses a coiled tube that can be used to minimize pressure surges in an ophthalmic aspiration system.
  • the tube has a length of at least 8 feet and a number of coils that create a fluidic resistance which minimizes vacuum surges .
  • the recited inner diameter of the tube ranges from 0.06 to .1 inches , which is industry standard.
  • the coiled approach can only account for a limited pressure drop .
  • the coil does not contain a filter and thus is susceptible to occlusions within the coiled tube .
  • the flow restrictors limit the vacuum surges within the ophthalmic aspiration system. These filter systems are not acceptable for use in orthopedic procedures .
  • An orthopedic aspiration system that includes a filter assembly and a restrictive aspiration tube .
  • the restrictive aspiration tube has an inner diameter between 0.05 and 0.30 inches .
  • Figure 1 is an illustration of an orthopedic medical system with an aspiration system
  • Figure 2 is a side view of an in-line filter of the aspiration system
  • Figure 3 is a cross-sectional view of the filter shown in Fig. 2 ;
  • Figure 4 is a side view of an alternate embodiment of the in-line filter; and, Figure 5 is a cross-sectional view of the filter shown in Fig . 4.
  • the orthopedic aspiration system includes a filter assembly and a restrictive aspiration tube .
  • the restrictive aspiration tube can be coupled to a vacuum source .
  • the filter assembly filters out particles aspirated from a surgical site .
  • the restrictive aspiration tube has an inner diameter between 0.05 and 0.3 inches and a length of at least 3 feet . These dimensions limit the flow rate that can be pulled through the aspiration system, while allowing for adequate vacuum necessary to aspirate from the surgical site .
  • Figure 1 shows an embodiment of a medical system 10.
  • the system 10 may include a hand piece 12 which has a cannula tip 14 that can be inserted into a body 16.
  • the hand piece 12 is typically held by a surgeon who performs an orthopedic surgical procedure with the system.
  • the cannula tip 14 may include some type of cutting element that cuts bone and/or tissue . This cutting action will create particles and other debris .
  • the handpiece 12 may be connected to a console 20 of the system 10.
  • the console 20 may provide driving signals to the handpiece 12.
  • the console 20 may have input knobs or buttons 24 that allow the surgeon to vary different parameters of the system 10.
  • the console 20 may also have a readout display 26 that provides an indication of the power level , etc . of the system 10.
  • the system 10 may include an irrigation tube 28 that can be coupled to the surgical site .
  • the irrigation tube is connected to an irrigation source 30.
  • the irrigation source 30 may be a gravity fed bottle that contains an irrigation fluid that flows into the body 16 through the irrigation tube 28.
  • the irrigation source 30 may include a pump to provide a relatively high flow of irrigation fluid to the surgical site .
  • the medical system 10 may further have an aspiration system 40 that aspirates the irrigation fluid and debris out of the body 16.
  • the aspiration system 40 may include an upstream aspiration tube 42 that is coupled to the body 16 and a restrictive aspiration tube 44 that is connected to a vacuum source 46.
  • a filter assembly 48 is connected to the aspiration tubes 42 and 44.
  • the vacuum source 46 may be a vacuum line of a hospital .
  • the vacuum source may be a vacuum pump .
  • the vacuum source 46 creates a negative pressure within the aspiration system 40 to induce a flow of irrigation fluid and debris out of the body 16.
  • the vacuum source 46 is configured so that the flow rate through the irrigation tube 28 is slightly greater than the flow rate through the aspiration system 40.
  • the restrictive aspiration tube 44 has a relatively large fluidic resistance to create a large pressure drop and inertia in the aspiration system 40.
  • the pressure drop reduces the free unobstructed flow and the large inertia minimizes instantaneous changes in the flow rate of the irrigation fluid flowing through the aspiration tube 44.
  • the second aspiration tube 44 has an inner diameter between 0.05 and 0.30 inches and a length of at least 3 feet . It is desirable to create a fluidic resistance that causes a pressure drop approximately equal to the maximum pressure of the vacuum source . This will minimize the change in flow rate within the aspiration system in the event a maximum pressure occurs because of an occlusion.
  • the fluidic resistance of the restrictive aspiration tube 44 limits the vacuum pressure within the aspiration system 40. This vacuum limit may allow the irrigation source 30 to be a gravitation bag that does not require an infusion pump as found in the prior art . Eliminating the infusion pump reduces the complexity and cost of the system.
  • FIGS 2 and 3 show an embodiment of an in-line filter assembly 48.
  • the in-line filter 48 may include a filter mesh GO located within a filter housing 62.
  • the filter housing 62 may be roughened to reduce the adhesion of air bubbles to the inner wall of the housing .
  • the housing 62 may have a roughness between 5 to 500 microns .
  • the filter assembly 48 may have a fluid volume ranging from 1 to 25 cc .
  • the housing 62 may include integral luers 64 and 66 that are connected to the first 42 and second 44 aspiration tubes (not shown) , respectively.
  • the filter mesh 60 may initially be a flat sheet that is bent and pushed into the filter housing 62 to create a U-shape filter.
  • the filter 60 may have a mesh opening area no greater than 0.01 per square inch.
  • the filter housing 62 may have longitudinal grooves 66 as shown in Fig. 3 that allow fluid to flow through the filter assembly when particles fill the inner chamber 68 of the filter mesh . Without such grooves particles captured by the filter mesh 62 may occlude the mesh and limit the life of the filter during a procedure .
  • FIGS. 4 and 5 show an alternate embodiment of the filter assembly 70.
  • the assembly includes a filter mesh 72 inside a filter housing 74.
  • the filter 72 may have a mesh opening area no greater than 0.01 per square inch .
  • the housing 74 may have luers 16 and 78 connected to the tubes 42 and 44 (not shown) , respectively.
  • the housing 74 may be roughened and have a fluid volume the same or similar to the filter described and shown in Figs . 2 and 3.
  • the filter mesh 72 may include a pair of ears 80 that create channels 82 between the mesh 72 and the filter housing 74.
  • the channels 82 allow for fluid to flow even when particles are being captured by the filter mesh 72.
  • the orthopedic aspiration system 40 can filter particles and minimize vacuum surges without introducing complicated parts or increased cost to the system. While certain exemplary embodiments have been described and shown in the accompanying drawings , it is to be understood that such embodiments are merely illustrative of and not restrictive on the broad invention, and that this invention not be limited to the specific constructions and arrangements shown and described, since various other modifications may occur to those ordinarily skilled in the art .

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)

Abstract

L'invention concerne un système d'aspiration utilisé dans des interventions chirurgicales nécessitant de grandes quantités de liquides stériles circulant dans le corps humain, par exemple en chirurgie orthopédique. Le système d'aspiration comprend un ensemble filtrant et un tube d'aspiration restrictif. Le tube d'aspiration restrictif peut être couplé à une source de vide. L'ensemble filtrant filtre les particules aspirées à partir d'un site chirurgical, et le tube d'aspiration restrictif présente un diamètre intérieur variant de 0,05 à 0,3 pouces et une longueur d'au moins 3 pieds. Ces dimensions limitent le flux circulant dans le corps humain, tout en permettant l'aspiration par un vide adapté à partir du site chirurgical.
EP06717443A 2005-01-04 2006-01-04 Systeme d'aspiration pour dispositifs medicaux orthopediques Withdrawn EP1841473A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US64147105P 2005-01-04 2005-01-04
PCT/US2006/000239 WO2006074257A2 (fr) 2005-01-04 2006-01-04 Systeme d'aspiration pour dispositifs medicaux orthopediques
US11/326,504 US7528130B2 (en) 1999-11-24 2006-01-06 Cytotoxic agents comprising taxanes and their therapeutic use

Publications (1)

Publication Number Publication Date
EP1841473A2 true EP1841473A2 (fr) 2007-10-10

Family

ID=38462471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06717443A Withdrawn EP1841473A2 (fr) 2005-01-04 2006-01-04 Systeme d'aspiration pour dispositifs medicaux orthopediques

Country Status (2)

Country Link
EP (1) EP1841473A2 (fr)
WO (1) WO2006074257A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1962750A1 (fr) * 2005-12-16 2008-09-03 Data Llc Systeme d'aspiration pour dispositifs medicaux ophtalmiques

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7468048B2 (en) 2006-10-06 2008-12-23 National Jewish Health Joint aspirate facilitating device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4865590A (en) * 1987-09-09 1989-09-12 Marmar Joel L Disposable prostatic aspiration device
US5807353A (en) * 1996-09-16 1998-09-15 Schmitz; Thomas David Aspiration device with separating element

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006074257A2 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1962750A1 (fr) * 2005-12-16 2008-09-03 Data Llc Systeme d'aspiration pour dispositifs medicaux ophtalmiques
EP1962750A4 (fr) * 2005-12-16 2012-07-25 Data Llc Systeme d'aspiration pour dispositifs medicaux ophtalmiques

Also Published As

Publication number Publication date
WO2006074257A2 (fr) 2006-07-13
WO2006074257A3 (fr) 2007-10-25

Similar Documents

Publication Publication Date Title
US20060173426A1 (en) Aspiration system for orthopedic medical devices
EP1962750B1 (fr) Systeme d'aspiration pour dispositifs medicaux ophtalmiques
EP1281377B1 (fr) Filtre et limiteur chirurgical de débit
KR100909513B1 (ko) 유체 압력 감지 챔버
JP5627026B2 (ja) 眼科手術のための眼科手術用カセット
US6478781B1 (en) Anterior chamber stabilizing device for use in eye surgery
US20020022810A1 (en) Non-linear flow restrictor for a medical aspiration system
US8475402B2 (en) Aspiration system for medical devices
US20060100570A1 (en) Aspiration system for ophthalmic medical devices
US20060058728A1 (en) Aspiration system for medical devices
WO2006074257A2 (fr) Systeme d'aspiration pour dispositifs medicaux orthopediques
US7217257B2 (en) Aspiration flow resistor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070712

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

R17D Deferred search report published (corrected)

Effective date: 20071025

RIC1 Information provided on ipc code assigned before grant

Ipc: A61M 5/00 20060101AFI20071213BHEP

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090803