CA2088024C - A cannula clamp - Google Patents
A cannula clamp Download PDFInfo
- Publication number
- CA2088024C CA2088024C CA002088024A CA2088024A CA2088024C CA 2088024 C CA2088024 C CA 2088024C CA 002088024 A CA002088024 A CA 002088024A CA 2088024 A CA2088024 A CA 2088024A CA 2088024 C CA2088024 C CA 2088024C
- Authority
- CA
- Canada
- Prior art keywords
- clip
- housing
- tube
- clamping device
- arms
- 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.)
- Expired - Fee Related
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
- A61M25/06—Body-piercing guide needles or the like
- A61M25/065—Guide needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B2017/347—Locking means, e.g. for locking instrument in cannula
-
- 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
- A61M25/09—Guide wires
- A61M2025/09125—Device for locking a guide wire in a fixed position with respect to the catheter or the human body
-
- 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
- A61M25/0009—Making of catheters or other medical or surgical tubes
- A61M25/0014—Connecting a tube to a hub
Abstract
A clamping device is disclosed for securing a cannula in an epidural needle. The clamping device comprises a cylindrical housing seated in an epidural needle, the housing having a pair of diametrically opposed openings in which the arms of a clip are inserted to loosely receive the cannula or engage the cannula as desired.
Description
z B~c~o~ovNn of T~ INV~NTrzoN
This invention relates to the field of catheters and, more particularly, relates to a clamping device for locking a cannula in a housing.
U.S. Patent No. x,973,312 issued November 27, 1990, discloses a system for the insertion of a flexible catheter through the epidural space and dura-arachnoid membrane into the subarachnoid space of a spine. °rhe system comprises a hollow needle having a sharpened entry end for insertion into the epidural space and an exit end having a hub, a cannula with a distal end adapted for placement into and for axial movement within the hollow needle whereby said cannula can be advanced forwardly within the hollow needle for abutment of the distal end against the dura-arachnoid membrane to pleas tension on the dura-arachnoid membrane, and securing means adapted to be attached to the hub at the exit end of the hollow needle for locking the cannula within the hollow needle from axial movement.
It is a principal object of the present invention to provide a clamping device for securing the cannula to 'the epidural needle while the cannula exerts pressure on the dura.
BRIEF SUMMARY OF THE I2J~TENTION
In accordance with the broad aspect of the invention, the clamping device far securing a tube such as a cannula to an epidural needle comprises an elongated hollow cylindrical housing for receiving said tube, said housing having a pair of diametrically opposed openings formed transversely therein, and a clip having a pair of opposed flexible arms joined at one end by a shank defining a tapered slot therebetween for insertion in snug-fitting relation through the openings formed in the housing whereby the tube is loosely received for sliding engagement between the opposed arms upon retraction of the clip within the housing and whereby the tube is gripped by the opposed arms upon extension of the clip within the housing.
B~?IEF i~ESCIZTPTIOdd OF TAE I3RAWINGS
The clamping device of the invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is an elevation of an epidural needle with a cannula extending therethrough, secured by the clamping device of the invention, inserted into the epidural space of a spine;
Figure 2 is a perspective view of the clamping device shown in Figure 1, partly cut away, securing the cannula from axial movement;
Figure 3 is a section along line 3-3 of Figure 2 showing the clip in a retracted position within the housing;
Figure 4 is a section corresponding to Figure 3 showing the clip in a fully extended cannula-engaging portion within the housing; and Figure 5 is a section corresponding to Figure 3 showing the clip in a partially retracted cannula-engaging position within the housing;
Figure 6 is a section corresponding to Figure 3 showing the clip in a retracted position which frees the cannula from the clip arms.
DESCRIPTIOI~d OF THE PREFERRED EM~ODT~IE;NT
Figure 1 of the drawings illustrates the placement of a hollow epidural needle 10 having a sharpened end 12 together with a cannula 7.3 extending therethrough and inserted into the back 14 of a patient between the spinous processes 16 of the vertebrae and through the ligamentum flavum 18 into the epidural space 20. The opposite end of needle 10 has a hub 22 having a conventional conical interior for receiving the forward tapered extension 24 of a clamping device 26 for securing the cannula from axial movement, to be described in detail with reference to Figures 2-6.
Clamping device housing 28 is an elongated cylindrical thin-walled hollow sleeve or housing preferably made of plastic having open end 30 with enlarged head 32 and opposite end with tapered extension 24 and shoulder 36.
Extension 24 makes a snug friction fit with hub 22 of epidural.needle 10. Cannula 13 passes loosely through housing 28 and needle l0 to extend into epidural space 20.
A :pair of diametrically oppased transverse holes 40, 42 are formed in sleeve 28. Holes 40, 42 can be rectangular, e.g. elongated, square, or round or oval in shape. A clip 44 having a shank 46 and opposed spaced-apart arms 48, 50 extending axially from shank 46, formed from a flexible plastic, has a shape corresponding with the shape of holes 40, 42 fox .3 snug sliding hit~ therein. Tapered slot 52 defined between arms 48, 5D has a width greater than the diameter of cannula 13 at the distal ends 54, 56 and a width less than thEa:diameter of cannula 13 advjacent shank 46 for reasc~ris which s~~i~.i become evident as the description proceeds.
TY:~o distal ends 54, 56 of arns ~e8, 50 pre:~ex~;,t~ly hove pointed taps 58, 60 ~rith a spacing less than th-a :Ze~.ght" of holes 40, 42 and alter barbs 58, 60 with a spacing greater than the height of :cles .40, 42 to -facilitate insertion of the c7.ip 44 into holes 40, 42 and to restrain clip 44 from removal from housing 28.
In operation, tubular cannula 13 which extends through E:pidural needle 10 between arms 48, 50 of clip 44, as shown in Figures z and 3, is extended into epidural space 20 for abutment against the dune-arachnoid membrane 62 to place thta membrane E.2 in tension, as described in U.S.
Patent 4,.973,312 Clip 44 is then extended transversely through housing 28, as shown in Figure 4, to push cannula ~.3 against the interior of housing 28 and to force the cannula towards the narrow end of slot 52 to pinch the cannula between arms 48, 50. Arms 48, 50 preferably are broad, i.e. sufficiently wide to avoid crushing the cannula. Clip 44 can then slide freely within housing 28 in holes 40, 42, as shown in Figure 5, with cannula 13 securely gripped thereby 'to maintain a desired tension on membrane 62. When it is desired to release cannula 13, clip 44 is gripged by head 68 and retracted within housing 28 to the position shown in Figure 6 whereby the cannula abuts the interior of housing 28 and is pulled free from the grip of arms 48, 50 adjacent shank 46.
It will be understood that modifications can be made in the embodiment of the invention illustrated and descri.':o~d herein without departing from the,scope and purview of the invention as defined by the appended claims.
This invention relates to the field of catheters and, more particularly, relates to a clamping device for locking a cannula in a housing.
U.S. Patent No. x,973,312 issued November 27, 1990, discloses a system for the insertion of a flexible catheter through the epidural space and dura-arachnoid membrane into the subarachnoid space of a spine. °rhe system comprises a hollow needle having a sharpened entry end for insertion into the epidural space and an exit end having a hub, a cannula with a distal end adapted for placement into and for axial movement within the hollow needle whereby said cannula can be advanced forwardly within the hollow needle for abutment of the distal end against the dura-arachnoid membrane to pleas tension on the dura-arachnoid membrane, and securing means adapted to be attached to the hub at the exit end of the hollow needle for locking the cannula within the hollow needle from axial movement.
It is a principal object of the present invention to provide a clamping device for securing the cannula to 'the epidural needle while the cannula exerts pressure on the dura.
BRIEF SUMMARY OF THE I2J~TENTION
In accordance with the broad aspect of the invention, the clamping device far securing a tube such as a cannula to an epidural needle comprises an elongated hollow cylindrical housing for receiving said tube, said housing having a pair of diametrically opposed openings formed transversely therein, and a clip having a pair of opposed flexible arms joined at one end by a shank defining a tapered slot therebetween for insertion in snug-fitting relation through the openings formed in the housing whereby the tube is loosely received for sliding engagement between the opposed arms upon retraction of the clip within the housing and whereby the tube is gripped by the opposed arms upon extension of the clip within the housing.
B~?IEF i~ESCIZTPTIOdd OF TAE I3RAWINGS
The clamping device of the invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is an elevation of an epidural needle with a cannula extending therethrough, secured by the clamping device of the invention, inserted into the epidural space of a spine;
Figure 2 is a perspective view of the clamping device shown in Figure 1, partly cut away, securing the cannula from axial movement;
Figure 3 is a section along line 3-3 of Figure 2 showing the clip in a retracted position within the housing;
Figure 4 is a section corresponding to Figure 3 showing the clip in a fully extended cannula-engaging portion within the housing; and Figure 5 is a section corresponding to Figure 3 showing the clip in a partially retracted cannula-engaging position within the housing;
Figure 6 is a section corresponding to Figure 3 showing the clip in a retracted position which frees the cannula from the clip arms.
DESCRIPTIOI~d OF THE PREFERRED EM~ODT~IE;NT
Figure 1 of the drawings illustrates the placement of a hollow epidural needle 10 having a sharpened end 12 together with a cannula 7.3 extending therethrough and inserted into the back 14 of a patient between the spinous processes 16 of the vertebrae and through the ligamentum flavum 18 into the epidural space 20. The opposite end of needle 10 has a hub 22 having a conventional conical interior for receiving the forward tapered extension 24 of a clamping device 26 for securing the cannula from axial movement, to be described in detail with reference to Figures 2-6.
Clamping device housing 28 is an elongated cylindrical thin-walled hollow sleeve or housing preferably made of plastic having open end 30 with enlarged head 32 and opposite end with tapered extension 24 and shoulder 36.
Extension 24 makes a snug friction fit with hub 22 of epidural.needle 10. Cannula 13 passes loosely through housing 28 and needle l0 to extend into epidural space 20.
A :pair of diametrically oppased transverse holes 40, 42 are formed in sleeve 28. Holes 40, 42 can be rectangular, e.g. elongated, square, or round or oval in shape. A clip 44 having a shank 46 and opposed spaced-apart arms 48, 50 extending axially from shank 46, formed from a flexible plastic, has a shape corresponding with the shape of holes 40, 42 fox .3 snug sliding hit~ therein. Tapered slot 52 defined between arms 48, 5D has a width greater than the diameter of cannula 13 at the distal ends 54, 56 and a width less than thEa:diameter of cannula 13 advjacent shank 46 for reasc~ris which s~~i~.i become evident as the description proceeds.
TY:~o distal ends 54, 56 of arns ~e8, 50 pre:~ex~;,t~ly hove pointed taps 58, 60 ~rith a spacing less than th-a :Ze~.ght" of holes 40, 42 and alter barbs 58, 60 with a spacing greater than the height of :cles .40, 42 to -facilitate insertion of the c7.ip 44 into holes 40, 42 and to restrain clip 44 from removal from housing 28.
In operation, tubular cannula 13 which extends through E:pidural needle 10 between arms 48, 50 of clip 44, as shown in Figures z and 3, is extended into epidural space 20 for abutment against the dune-arachnoid membrane 62 to place thta membrane E.2 in tension, as described in U.S.
Patent 4,.973,312 Clip 44 is then extended transversely through housing 28, as shown in Figure 4, to push cannula ~.3 against the interior of housing 28 and to force the cannula towards the narrow end of slot 52 to pinch the cannula between arms 48, 50. Arms 48, 50 preferably are broad, i.e. sufficiently wide to avoid crushing the cannula. Clip 44 can then slide freely within housing 28 in holes 40, 42, as shown in Figure 5, with cannula 13 securely gripped thereby 'to maintain a desired tension on membrane 62. When it is desired to release cannula 13, clip 44 is gripged by head 68 and retracted within housing 28 to the position shown in Figure 6 whereby the cannula abuts the interior of housing 28 and is pulled free from the grip of arms 48, 50 adjacent shank 46.
It will be understood that modifications can be made in the embodiment of the invention illustrated and descri.':o~d herein without departing from the,scope and purview of the invention as defined by the appended claims.
Claims (9)
1. A clamping device. for fractionally securing a tube along its length without occluding said tube comprising an elongated open-ended, hollow cylindrical housing for receiving said tube axially therein, said housing having a housing wall with a pair of diametrically opposed holes formed transversely therein, a clip having a pair of opposed flexible arms joined at one end by a shank defining a tapered slot therebetween inserted in snug-fitting relation. through the holes formed in the housing wall perpendicular to a tube within the housing whereby the tube is loosely received for sliding engagement between the opposed arms of the clip upon retraction of the clip within the housing and whereby the tube is fractionally gripped by the opposed arms upon extension of the clip within the housing.
2. A clamping device as claimed in claim 1 wherein the clip shank has a head at one end with a diameter greater than the diameter of the holes and wherein the opposed flexible arms have barbed tips at the distal ends thereof cooperating with the housing wall whereby the clip can move freely transversely within the housing between the said head and said barbed tips.
3. A clamping device as claimed in claim 2 wherein the tapered slot has a width adjacent to the clip shank less than the diameter of the tube whereby the tube is fractionally gripped between the opposed arms against the housing wall for securement of the tube without occlusion of the tube upon extension of the clip into the housing.
4. A clamping device as claimed in claim 3 wherein the barbed tips are pointed and the spacing of the points is less than the width of the holes to facilitate insertion of the arms into the holes and wherein the width of barbs is greater than the width of the holes to restrain the clip from withdrawal from the housing.
5. A clamping device as claimed in claim 1 wherein the clip is formed from a flexible plastic.
6. A clamping device as claimed in claim 5 wherein the clip has a rectangular cross-section.
7. A clamping device as claimed in claim 5 wherein the clap has a round cross-section.
8. A clamping device as claimed in claim 5 wherein the clip has an oval cross-section.
9. A clamping device as claimed in claim 3 wherein said hollow cylindrical housing has a tapered extension at one end for insertion into a hub of an epidural needle and wherein said tube is a cannula inserted into the epidural needle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82963392A | 1992-02-03 | 1992-02-03 | |
| US829,633 | 1992-02-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2088024A1 CA2088024A1 (en) | 1993-08-04 |
| CA2088024C true CA2088024C (en) | 2004-03-30 |
Family
ID=25255071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002088024A Expired - Fee Related CA2088024C (en) | 1992-02-03 | 1993-01-25 | A cannula clamp |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5368573A (en) |
| EP (1) | EP0555043B1 (en) |
| AT (1) | ATE129908T1 (en) |
| AU (1) | AU666347B2 (en) |
| CA (1) | CA2088024C (en) |
| DE (1) | DE69300743T2 (en) |
| ZA (1) | ZA93681B (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5480389A (en) * | 1994-08-09 | 1996-01-02 | Becton, Dickinson And Company | Method and apparatus for adjusting the length of a combined spinal-epidural needle |
| US5836914A (en) * | 1995-09-15 | 1998-11-17 | Becton Dickinson And Company | Method and apparatus for variably regulating the length of a combined spinal-epidural needle |
| US5830183A (en) | 1997-06-30 | 1998-11-03 | Schneider (Usa) Inc | Clip device for vascular catheter |
| US6245044B1 (en) * | 1998-07-17 | 2001-06-12 | Becton, Dickinson And Company | Variable extension combined spinal/epidural needle set and method for its use |
| US20010021824A1 (en) * | 1998-07-17 | 2001-09-13 | Marsh Ronald W. | Variable extension combined spinal/epidural needle set and method for its use |
| DE29903286U1 (en) * | 1999-02-24 | 2000-08-10 | Braun Melsungen Ag | Catheter coupling |
| DE19931771A1 (en) * | 1999-07-08 | 2001-01-11 | Wolfgang Weuffen | Fixing clip for a connection between a urethal catheter and the hose of a urine bottle comprises a conical fixing section with diametrically opposed arms which are provided with clawed ends |
| US6517518B2 (en) * | 2000-03-10 | 2003-02-11 | Kensey Nash Corporation | Tool for facilitating the connecting of a catheter or other tubular member onto a guide-wire without access to the ends of the guide-wire |
| US6641563B1 (en) * | 2000-11-01 | 2003-11-04 | Arrow International, Inc. | Stylet-free epidural catheter and thread assist device |
| US8114085B2 (en) * | 2006-04-13 | 2012-02-14 | General Electric Company | Percutaneous registration-and-access tool for minimally invasive spinal surgery |
| US20080183192A1 (en) | 2007-01-26 | 2008-07-31 | Laurimed Llc | Contralateral insertion method to treat herniation with device using visualization components |
| US20080188826A1 (en) * | 2007-02-01 | 2008-08-07 | Laurimed, Llc | Methods and devices for treating tissue |
| CA2720452A1 (en) | 2008-04-02 | 2009-10-08 | Laurimed, Llc | Methods and devices for delivering injections |
| US8172802B2 (en) * | 2008-11-24 | 2012-05-08 | Dartmouth-Hitchcock Clinic | Intravascular needle and catheter assembly |
| US8685052B2 (en) | 2010-06-30 | 2014-04-01 | Laurimed, Llc | Devices and methods for cutting tissue |
| IN2013CN00091A (en) | 2010-06-30 | 2015-07-03 | Laurimed Llc | |
| US9498248B2 (en) * | 2010-10-05 | 2016-11-22 | Medtronic, Inc. | Retainer for immobilizing an implanted catheter during stylet retraction, and stylet holder for use with same |
| EP2455014B1 (en) * | 2010-11-17 | 2015-08-12 | Hyprevention | Implantable device for preventive or interventive treatment of femur fractures, associated ancillary device |
| US8971993B2 (en) | 2010-11-19 | 2015-03-03 | Mediguide Ltd. | Systems and methods for navigating a surgical device |
| US8603037B1 (en) | 2011-04-11 | 2013-12-10 | Dartmouth-Hitchcock Clinic | Intravascular needle and catheter assembly and grip for the same |
| WO2013119336A1 (en) | 2012-02-10 | 2013-08-15 | Laurimed, Llc | Vacuum powered rotary devices and methods |
| US8815099B1 (en) | 2014-01-21 | 2014-08-26 | Laurimed, Llc | Devices and methods for filtering and/or collecting tissue |
| US10071235B1 (en) | 2015-06-09 | 2018-09-11 | Luis Alberto Narciso-Martinez | Slide-button catheter connector device |
| US9770579B1 (en) | 2015-06-09 | 2017-09-26 | Luis Alberto Narciso-Martinez | Push-button operated epidural catheter connector |
| US10076387B2 (en) | 2015-06-18 | 2018-09-18 | Medtronic, Inc. | Medical device implantation and positioning system |
| CN112169135A (en) * | 2018-10-08 | 2021-01-05 | 万海伟 | Adjustable microcatheter for cerebrovascular intervention and method of use |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2707953A (en) * | 1952-07-15 | 1955-05-10 | Abbott Lab | Transfusion equipment |
| US3167299A (en) * | 1961-01-05 | 1965-01-26 | Abbott Lab | Flow regulating device |
| FR1596963A (en) * | 1968-12-18 | 1970-06-22 | ||
| US3682173A (en) * | 1970-10-16 | 1972-08-08 | Vicra Sterile Inc | Separable catheter insertion device |
| US4209015A (en) * | 1978-05-24 | 1980-06-24 | Wicks Anthony E | Parenteral administration apparatus |
| SU974024A1 (en) * | 1981-04-01 | 1982-11-15 | Научно-Исследовательский Институт Тяжелого Машиностроения Производственного Объединения "Уралмаш" | Quick-release connection |
| US4392857A (en) * | 1981-04-23 | 1983-07-12 | Beran Anthony V | Tube holder |
| AU9093182A (en) * | 1981-11-26 | 1983-06-02 | Sabco Ltd. | Quick release hose coupling |
| US4473369A (en) * | 1982-01-11 | 1984-09-25 | Baxter Travenol Laboratories, Inc. | Continuous ambulatory peritoneal dialysis clamping system |
| JPS61124786U (en) * | 1984-09-07 | 1986-08-06 | ||
| US4689043A (en) * | 1986-03-19 | 1987-08-25 | Imed Corporation | IV tube activator |
| US5000614A (en) * | 1989-05-05 | 1991-03-19 | Huron Products Corporation | Conduit quick connector assembly having a ramped housing with a hair pin retainer |
| US4973312A (en) * | 1989-05-26 | 1990-11-27 | Andrew Daniel E | Method and system for inserting spinal catheters |
| US5137517A (en) * | 1989-11-28 | 1992-08-11 | Scimed Life Systems, Inc. | Device and method for gripping medical shaft |
| US5158569A (en) * | 1990-12-21 | 1992-10-27 | Ballard Medical Products | Catheter placement locking and sealing device |
| US5105807A (en) * | 1991-02-26 | 1992-04-21 | Alternative Medical Products, Inc. | Device and methods for securing nasal tubing |
-
1993
- 1993-01-25 CA CA002088024A patent/CA2088024C/en not_active Expired - Fee Related
- 1993-01-29 AU AU32112/93A patent/AU666347B2/en not_active Ceased
- 1993-02-01 ZA ZA93681A patent/ZA93681B/en unknown
- 1993-02-02 AT AT93300739T patent/ATE129908T1/en not_active IP Right Cessation
- 1993-02-02 DE DE69300743T patent/DE69300743T2/en not_active Expired - Fee Related
- 1993-02-02 EP EP93300739A patent/EP0555043B1/en not_active Expired - Lifetime
- 1993-10-07 US US08/133,261 patent/US5368573A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2088024A1 (en) | 1993-08-04 |
| US5368573A (en) | 1994-11-29 |
| EP0555043A1 (en) | 1993-08-11 |
| AU3211293A (en) | 1993-08-05 |
| DE69300743D1 (en) | 1995-12-14 |
| ZA93681B (en) | 1993-09-06 |
| ATE129908T1 (en) | 1995-11-15 |
| EP0555043B1 (en) | 1995-11-08 |
| AU666347B2 (en) | 1996-02-08 |
| DE69300743T2 (en) | 1996-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |