CA1150362A - Temporary adjustable bipolar lead - Google Patents
Temporary adjustable bipolar leadInfo
- Publication number
- CA1150362A CA1150362A CA000354927A CA354927A CA1150362A CA 1150362 A CA1150362 A CA 1150362A CA 000354927 A CA000354927 A CA 000354927A CA 354927 A CA354927 A CA 354927A CA 1150362 A CA1150362 A CA 1150362A
- Authority
- CA
- Canada
- Prior art keywords
- lead
- inner lead
- junction
- coaxial
- aperture
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/056—Transvascular endocardial electrode systems
Abstract
TEMPORARY ADJUSTABLE BIPOLAR LEAD
Abstract of the Disclosure Temporary adjustable bipolar lead including an inner lead and an outer coaxial lead. A self-sealing lead introducer head at a junction of the inner lead and outer lead provides for takeoff of the end of the outer coaxial lead. The inner lead is in slidable engagement with the outer lead through a hole in a diaphragm of the lead introducer head.
Abstract of the Disclosure Temporary adjustable bipolar lead including an inner lead and an outer coaxial lead. A self-sealing lead introducer head at a junction of the inner lead and outer lead provides for takeoff of the end of the outer coaxial lead. The inner lead is in slidable engagement with the outer lead through a hole in a diaphragm of the lead introducer head.
Description
i036Z
Background of the Invention 1. Field of the Invention - The present invention relates generally to a surgical electrical applicator, and more importantly, pertains to a temporary adjustable bipolar lead.
Background of the Invention 1. Field of the Invention - The present invention relates generally to a surgical electrical applicator, and more importantly, pertains to a temporary adjustable bipolar lead.
2. Description of the Prior Art - There has never been a coaxial sliding pacing lead for connecting between a chamber or chambers of a heart and a pulse generator. In the past, it has always been a prior art practice to either securely affix an electrode or electrodes to the walls of the heart or in the alternative, to let the electrode of a pacing lead lie adjacent to the wall.
The present invention overcomes the disadvantages of the prior art problems in providing a temporary adjustable bipolar pacing lead.
Summary of the Invention The present invention provides a temporary adjustable bipolar lead for use with external pulse generators for short term pacing of the ventricle, atrium, or both.
According to a broad aspect of the invention there i& proyided an adjustable bipolar transvenous lead comprising: an inner lead having an electrical conductor with an electrode at a first end and an electrical connection at a second end wherein said inner lead is insulated along its outer surface; an outer lead havîng a ring electrode at said first end wherein a first portion of said outer lead is slideably mounted coaxial to said inner lead between said first end and a junction intermediate said first end and said second end and wherein a second portion of said outer lead is not coaxial to said inner lead; and a lead introducer slideably mounted to said inner lead at said junction and fixedly mounted to said outer lead at said junction having a body with three apertures wherein said first portion of said outer lead passes through a first aperture, said second portion of said outer lead passes through a second aperture, and said inner lead passes through said third aperture at a point intermediate said junction and said second end and said third aperture is sealed by a ., ~ $
115~36Z
rubber diaphragm fixedly mounted to said body through which said inner lead passes.
According to one embodiment of the present invention, there is provided a temporary adjustable bipolar lead including an inner lead and coaxial outer lead, the inner lead having a quadrafillar spaced-wound coil with polyurethane insulation, an electrode at one end and a pin con-nector in plastic bushing mounted at the outer end, an outer coaxial lead having a ring electrode at one end, a pin connector at another end and which takes off from the coaxial end of the outer lead, and a self-sealing temporary lead introducer head at the junction of the lnner lead and outer lead and including a diameter to accommodate the end of the outer lead at one end of the head, a diaphragm mounted in the other head having a -la-hole with an inner diameter accommodating the inner lead and the end of the outer lead taking off from the side of the head whereby the'inner lea'd is in slideable engagement with the outer lead through the hole of the diaphragm providing spacing of the electrode with res'pect to the ring electrode.
One significant aspect'and feature of the present invention is a pacing lead whi'ch provides spacing between the two eIectrodes for optimum temporary transvenous pacing of right ventricular, atrial or atrial-ventricular pacing.
Another significant aspect and feature of the present invention is a self-sealing temporary lead introducing head which provides for a sterile'environment between the lead and the individual user.
A stylet can be'utilized with the temporary adjust-able bipolar lead of the present invention to facilitate trans-venous insertion of the' pacing lead.
Brief Description of the ~rawing Other objects and many of the attendant advan-tages of this invention will~be`rea`dily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawing, in which like reference numerals designate like parts throughout the FIGUR~ thereof and wherein:
Fig. 1 illustrates a plan view of the temporary adjustable bipolar lead, and;
Fig. 2 illustrates a cross-sectional view taken along line 2-2 of Fig. 1.
~.~ 5{~36Z
Detailed Description of the Preferred Embodiment Fig. 1, which illustrates a plan view of an adjustable bipolar coaxial lead 10, of the present invention, shows an inner lead 12, an outer lead 14, the inner lead 12 coaxially positioned through the outer lead 14 and through a self-sealing temporary lead introducer head 24 as later described in detail. The inner lead 12 includes a coaxial nickel alloy electrical conductor of quadrafillar space-wound coil 16 within an insulating sleeve of polyurethane 22.
A electrode 18 of platinum-iridium affixes to one end and a pin connector 20 affixes to the other end. The outer lead 14 includes a coaxial nic]cel alloy electrical quadrafillar space-wound coil 26 of a larger diameter than that of the coil 16 so as to coaxially position over the coil 16 and includes an insulating sleeve of polyurethane insu-lation 32. A ring electrode 28 electricially affixes at one end and a pin connector 30 affixes at the other end 14a while a mid portion of the outer lead 14 passes through the self- _ sealing temporary lead introducing head 24 at the junction 20 34 as also illustrated in Fi~. 2. A stylet 36, including a handle 36a, inserts into and down through the inner lead 12 to the electrode 18 providing for stiffness, curvature and controlled flexibility required to maneuver the lead tip 18 into the right ventricle.
Fig. 2, which illustrates a cross-sectional view taken along lines 2-2 of Fig. 1, shows the self-sealing temporary lead introducing head 24 including a body 24a of polyethelene, a cap 24b for the body 24a also of polyethelene, and a diaphragm 24c of rubber which mounts between the body 30 24a and the cap 24b and has a hole 24d which slideably accepts the inner lead 14. The body 24a includes circumferential ring projections 24e and a circumferential ring identation 24f for engagement with the diaphragm 24c, and a circum-ferential ring projection 24m of the cap 24b. Likewise, the cap 24b includes circumferential ring projection 24g which engages against the diaphragm 24c. A longitudinal hole 24h extends outwardly in the body 24a from the other end 14b of `- ~L15~36Z
the outer lead 14 providing take off of the outer lead 14 at the junction 34. The diameter of the outer lead 14 is reduced as illustrated to a smaller diameter as dictated and abuts up against the circular ring projection 24i in the inner longitudinal hole 24j of the body 24a. The diameter of the longitudinal hole 24j in the body 24a flares out at 24k to an inner diameter 241.
``` 115V362 Preferred Mode of Operation -The temporary adjustable bipolar lead 10 is sterilized by an autoclave or other suitable process and can be introduced through a superficial peripheral vein ; 5 such as with a percutanebus introducer.
The distal end 18 or the lead 10 passes into the vein and through the` venous system in the usual manner.
Position of the lead may be'confirmed by fluoroscopy of intracardiac EKG.
The wire stylet 36 provides a stiffness, curvature and controlled flexibility required to maneuver the lead tip 18 into the right ventriclé. A distal curvature may be ob-tained by inserting a curved stylet into the lumen of the lead. With a stylet in place,' the lead is passed by the venous system to the'right atrium. The stylet can be partially with-drawn before advancing the'distal tip of the lead into the apex of the ventricle the'reby avoiding possible perforation of the relatively thi'n right ventricle wall. Accurate positioning ~` and wedging of the electrode is essential for stable endo-cardial pacing. A satisfactQry position can usually be achieved either with a tip of the lead pointing straight toward the apex or with the distal end of the lead making a slight dip or bend, sugges'ting that it is curving around a trabeculation.
In the atrial position, fluoroscopy may be required to determine 25 that the lead tip is lodged in the'atrial appendage or coronary sinus.
Once the lead tip 18 is positioned, the ring electrode 28 may be adjusted until the desired stimulation and/or sensing threshold is obtained. This is accomplished by holding the terminal for the distal tip 18 reinforced by the stylet steady, pushing or pulling the outer lead 14 as is appropriate which will cause a sliding action of the ring electrode with respect to the electrode. Again, fluoroscopy may be required to establish the position of the ring electrode with relation to the electrode.
- Various modifications can be made to the temporary -~ adjustable bipolar lead of the present invention without ,~
`` 1~5(~362 departing from the apparent scope of the present invention.
Having thus described the invention, there is claimed as new and desired to be secured by Letters Patent:
The present invention overcomes the disadvantages of the prior art problems in providing a temporary adjustable bipolar pacing lead.
Summary of the Invention The present invention provides a temporary adjustable bipolar lead for use with external pulse generators for short term pacing of the ventricle, atrium, or both.
According to a broad aspect of the invention there i& proyided an adjustable bipolar transvenous lead comprising: an inner lead having an electrical conductor with an electrode at a first end and an electrical connection at a second end wherein said inner lead is insulated along its outer surface; an outer lead havîng a ring electrode at said first end wherein a first portion of said outer lead is slideably mounted coaxial to said inner lead between said first end and a junction intermediate said first end and said second end and wherein a second portion of said outer lead is not coaxial to said inner lead; and a lead introducer slideably mounted to said inner lead at said junction and fixedly mounted to said outer lead at said junction having a body with three apertures wherein said first portion of said outer lead passes through a first aperture, said second portion of said outer lead passes through a second aperture, and said inner lead passes through said third aperture at a point intermediate said junction and said second end and said third aperture is sealed by a ., ~ $
115~36Z
rubber diaphragm fixedly mounted to said body through which said inner lead passes.
According to one embodiment of the present invention, there is provided a temporary adjustable bipolar lead including an inner lead and coaxial outer lead, the inner lead having a quadrafillar spaced-wound coil with polyurethane insulation, an electrode at one end and a pin con-nector in plastic bushing mounted at the outer end, an outer coaxial lead having a ring electrode at one end, a pin connector at another end and which takes off from the coaxial end of the outer lead, and a self-sealing temporary lead introducer head at the junction of the lnner lead and outer lead and including a diameter to accommodate the end of the outer lead at one end of the head, a diaphragm mounted in the other head having a -la-hole with an inner diameter accommodating the inner lead and the end of the outer lead taking off from the side of the head whereby the'inner lea'd is in slideable engagement with the outer lead through the hole of the diaphragm providing spacing of the electrode with res'pect to the ring electrode.
One significant aspect'and feature of the present invention is a pacing lead whi'ch provides spacing between the two eIectrodes for optimum temporary transvenous pacing of right ventricular, atrial or atrial-ventricular pacing.
Another significant aspect and feature of the present invention is a self-sealing temporary lead introducing head which provides for a sterile'environment between the lead and the individual user.
A stylet can be'utilized with the temporary adjust-able bipolar lead of the present invention to facilitate trans-venous insertion of the' pacing lead.
Brief Description of the ~rawing Other objects and many of the attendant advan-tages of this invention will~be`rea`dily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawing, in which like reference numerals designate like parts throughout the FIGUR~ thereof and wherein:
Fig. 1 illustrates a plan view of the temporary adjustable bipolar lead, and;
Fig. 2 illustrates a cross-sectional view taken along line 2-2 of Fig. 1.
~.~ 5{~36Z
Detailed Description of the Preferred Embodiment Fig. 1, which illustrates a plan view of an adjustable bipolar coaxial lead 10, of the present invention, shows an inner lead 12, an outer lead 14, the inner lead 12 coaxially positioned through the outer lead 14 and through a self-sealing temporary lead introducer head 24 as later described in detail. The inner lead 12 includes a coaxial nickel alloy electrical conductor of quadrafillar space-wound coil 16 within an insulating sleeve of polyurethane 22.
A electrode 18 of platinum-iridium affixes to one end and a pin connector 20 affixes to the other end. The outer lead 14 includes a coaxial nic]cel alloy electrical quadrafillar space-wound coil 26 of a larger diameter than that of the coil 16 so as to coaxially position over the coil 16 and includes an insulating sleeve of polyurethane insu-lation 32. A ring electrode 28 electricially affixes at one end and a pin connector 30 affixes at the other end 14a while a mid portion of the outer lead 14 passes through the self- _ sealing temporary lead introducing head 24 at the junction 20 34 as also illustrated in Fi~. 2. A stylet 36, including a handle 36a, inserts into and down through the inner lead 12 to the electrode 18 providing for stiffness, curvature and controlled flexibility required to maneuver the lead tip 18 into the right ventricle.
Fig. 2, which illustrates a cross-sectional view taken along lines 2-2 of Fig. 1, shows the self-sealing temporary lead introducing head 24 including a body 24a of polyethelene, a cap 24b for the body 24a also of polyethelene, and a diaphragm 24c of rubber which mounts between the body 30 24a and the cap 24b and has a hole 24d which slideably accepts the inner lead 14. The body 24a includes circumferential ring projections 24e and a circumferential ring identation 24f for engagement with the diaphragm 24c, and a circum-ferential ring projection 24m of the cap 24b. Likewise, the cap 24b includes circumferential ring projection 24g which engages against the diaphragm 24c. A longitudinal hole 24h extends outwardly in the body 24a from the other end 14b of `- ~L15~36Z
the outer lead 14 providing take off of the outer lead 14 at the junction 34. The diameter of the outer lead 14 is reduced as illustrated to a smaller diameter as dictated and abuts up against the circular ring projection 24i in the inner longitudinal hole 24j of the body 24a. The diameter of the longitudinal hole 24j in the body 24a flares out at 24k to an inner diameter 241.
``` 115V362 Preferred Mode of Operation -The temporary adjustable bipolar lead 10 is sterilized by an autoclave or other suitable process and can be introduced through a superficial peripheral vein ; 5 such as with a percutanebus introducer.
The distal end 18 or the lead 10 passes into the vein and through the` venous system in the usual manner.
Position of the lead may be'confirmed by fluoroscopy of intracardiac EKG.
The wire stylet 36 provides a stiffness, curvature and controlled flexibility required to maneuver the lead tip 18 into the right ventriclé. A distal curvature may be ob-tained by inserting a curved stylet into the lumen of the lead. With a stylet in place,' the lead is passed by the venous system to the'right atrium. The stylet can be partially with-drawn before advancing the'distal tip of the lead into the apex of the ventricle the'reby avoiding possible perforation of the relatively thi'n right ventricle wall. Accurate positioning ~` and wedging of the electrode is essential for stable endo-cardial pacing. A satisfactQry position can usually be achieved either with a tip of the lead pointing straight toward the apex or with the distal end of the lead making a slight dip or bend, sugges'ting that it is curving around a trabeculation.
In the atrial position, fluoroscopy may be required to determine 25 that the lead tip is lodged in the'atrial appendage or coronary sinus.
Once the lead tip 18 is positioned, the ring electrode 28 may be adjusted until the desired stimulation and/or sensing threshold is obtained. This is accomplished by holding the terminal for the distal tip 18 reinforced by the stylet steady, pushing or pulling the outer lead 14 as is appropriate which will cause a sliding action of the ring electrode with respect to the electrode. Again, fluoroscopy may be required to establish the position of the ring electrode with relation to the electrode.
- Various modifications can be made to the temporary -~ adjustable bipolar lead of the present invention without ,~
`` 1~5(~362 departing from the apparent scope of the present invention.
Having thus described the invention, there is claimed as new and desired to be secured by Letters Patent:
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An adjustable bipolar transvenous lead comprising an inner lead having an electrical conductor with an electrode at a first end and an electrical connection at a second end wherein said inner lead is insulated along its outer surface; an outer lead having a ring electrode at said first end wherein a first portion of said outer lead is slideably mounted coaxial to said inner lead between said first end and a junction inter-mediate said first end and said second end and wherein a second portion of said outer lead is not coaxial to said inner lead; and a lead intro-ducer slideably mounted to said inner lead at said junction and fixedly mounted to said outer lead at said junction having a body with three apertures wherein said first portion of said outer lead passes through a first aperture, said second portion of said outer lead passes through a second aperture, and said inner lead passes through said third aperture at a point intermediate said junction and said second end and said third aperture is sealed by a rubber diaphragm fixedly mounted to said body through which said inner lead passes.
2. An adjustable bipolar transvenous lead according to claim 1 wherein said outer lead further comprises: a space-wound coil having poly-urethane insulation along its outer surface.
3. An adjustable bipolar transvenous lead according to claim 1 or claim 2 wherein said inner lead further comprises: a space-wound coil with polyurethane insulation permitting use of a coaxial stylet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/053,001 US4271847A (en) | 1979-06-28 | 1979-06-28 | Temporary adjustable bipolar lead |
| US53,001 | 1979-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1150362A true CA1150362A (en) | 1983-07-19 |
Family
ID=21981282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000354927A Expired CA1150362A (en) | 1979-06-28 | 1980-06-26 | Temporary adjustable bipolar lead |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4271847A (en) |
| JP (1) | JPS614371Y2 (en) |
| AU (1) | AU532704B2 (en) |
| CA (1) | CA1150362A (en) |
| DE (1) | DE3024359A1 (en) |
| FR (1) | FR2460683A1 (en) |
| NL (1) | NL8003736A (en) |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4357947A (en) * | 1980-07-14 | 1982-11-09 | Littleford Philip O | Electrode and method for endocardial atrial pacing |
| FR2510390B1 (en) * | 1981-07-31 | 1986-06-06 | Cardiofrance Co | SLIDING COAXIAL PROBE FOR HEART STIMULATOR |
| US4481953A (en) * | 1981-11-12 | 1984-11-13 | Cordis Corporation | Endocardial lead having helically wound ribbon electrode |
| US4488561A (en) * | 1983-06-27 | 1984-12-18 | Medtronic, Inc. | Pacing lead with insertable memory coil |
| US4637404A (en) * | 1983-10-20 | 1987-01-20 | Gessman Lawrence J | Method and apparatus for converting a catheter to a cardiac pacing electrode |
| US4676249A (en) * | 1986-05-19 | 1987-06-30 | Cordis Corporation | Multi-mode guidewire |
| US4796642A (en) * | 1987-12-28 | 1989-01-10 | Cordis Leads, Inc. | Pacing lead stylet |
| US5699796A (en) * | 1993-01-29 | 1997-12-23 | Cardima, Inc. | High resolution intravascular signal detection |
| US5281049A (en) * | 1992-04-14 | 1994-01-25 | Sprague Aristo-Aire, Inc. | Air direction control means for vehicle climate control means |
| US5810810A (en) * | 1992-04-23 | 1998-09-22 | Scimed Life Systems, Inc. | Apparatus and method for sealing vascular punctures |
| USRE40863E1 (en) * | 1992-04-23 | 2009-07-21 | Boston Scientific Scimed, Inc. | Apparatus and method for sealing vascular punctures |
| US6063085A (en) * | 1992-04-23 | 2000-05-16 | Scimed Life Systems, Inc. | Apparatus and method for sealing vascular punctures |
| WO1993021844A1 (en) * | 1992-04-23 | 1993-11-11 | Scimed Life Systems, Inc. | Apparatus and method for sealing vascular punctures |
| US5645082A (en) * | 1993-01-29 | 1997-07-08 | Cardima, Inc. | Intravascular method and system for treating arrhythmia |
| EP0681451B1 (en) * | 1993-01-29 | 2001-09-05 | Cardima, Inc. | Multiple intravascular sensing devices for electrical activity |
| US5706809A (en) * | 1993-01-29 | 1998-01-13 | Cardima, Inc. | Method and system for using multiple intravascular sensing devices to detect electrical activity |
| WO1995009561A1 (en) * | 1993-10-01 | 1995-04-13 | Target Therapeutics, Inc. | Sheathed multipolar catheter and multipolar guidewire for sensing cardiac electrical activity |
| US5964793A (en) * | 1996-06-20 | 1999-10-12 | Rutten; Jean | Lead introducer with defibrillation electrode and method of atrial defibrillation |
| US5851226A (en) | 1996-10-22 | 1998-12-22 | Medtronic, Inc. | Temporary transvenous endocardial lead |
| US6007488A (en) * | 1997-05-12 | 1999-12-28 | Rtc, Inc. | Medical probe including an electrically conductive membrane suitable for medical uses |
| US7313444B2 (en) * | 1998-11-20 | 2007-12-25 | Pacesetter, Inc. | Self-anchoring coronary sinus lead |
| US6711443B2 (en) * | 2001-07-25 | 2004-03-23 | Oscor Inc. | Implantable coronary sinus lead and method of implant |
| US7072719B2 (en) * | 2001-09-20 | 2006-07-04 | Medtronic, Inc. | Implantable percutaneous stimulation lead with interlocking elements |
| US8116885B2 (en) * | 2001-10-15 | 2012-02-14 | Xiangsheng Zheng | Bachmann's bundle electrode for atrial defibrillation |
| US6988007B1 (en) | 2002-08-13 | 2006-01-17 | Pacesetter, Inc. | Single pass telescoping cardiac lead for the left heart |
| US7223266B2 (en) | 2003-02-04 | 2007-05-29 | Cardiodex Ltd. | Methods and apparatus for hemostasis following arterial catheterization |
| FR2851169B1 (en) * | 2003-02-19 | 2005-05-20 | Marc Bemurat | AUXILIARY STIMULATION POLE FOR CARDIAC STIMULATION PROBE AND PROBE THUS EQUIPPED |
| US8229574B2 (en) * | 2003-02-21 | 2012-07-24 | Cochlear Limited | Telescopic electrode array |
| US20040215305A1 (en) * | 2003-04-25 | 2004-10-28 | Sage Shahn S. | Implantable lead with intermediate insertion port for receiving a stiffening member |
| FR2869807B1 (en) * | 2004-05-05 | 2007-03-09 | Marc Bemurat | BIPOLAR CARDIAC STIMULATION PROBE WITH AUXILIARY POLE |
| EP1814478A4 (en) | 2004-11-22 | 2011-05-18 | Cardiodex Ltd | Techniques for heat-treating varicose veins |
| EP2182875A4 (en) | 2007-08-15 | 2011-08-24 | Cardiodex Ltd | Systems and methods for puncture closure |
| US20090210040A1 (en) * | 2008-02-19 | 2009-08-20 | Ochoa Francisco | Variable length medical electrical stimulation lead |
| US20090281409A1 (en) * | 2008-05-06 | 2009-11-12 | Jeryle Walter | Reinforced medical device |
| US11065461B2 (en) | 2019-07-08 | 2021-07-20 | Bioness Inc. | Implantable power adapter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US452220A (en) * | 1891-05-12 | gunning | ||
| US3485247A (en) * | 1965-08-16 | 1969-12-23 | Electro Catheter Corp | Cardiac catheterization apparatus and method |
| US3865118A (en) * | 1973-12-27 | 1975-02-11 | Univ California | Transvenous coaxial catheter |
| DE2605590A1 (en) * | 1976-02-12 | 1977-08-18 | Heinz Dr Med Praeuer | Pacemaker electrode with flexible electrode catheter - with flexible projecting base for abutment against wall of heart |
-
1979
- 1979-06-28 US US06/053,001 patent/US4271847A/en not_active Expired - Lifetime
-
1980
- 1980-06-05 JP JP1980078618U patent/JPS614371Y2/ja not_active Expired
- 1980-06-23 AU AU59526/80A patent/AU532704B2/en not_active Ceased
- 1980-06-26 CA CA000354927A patent/CA1150362A/en not_active Expired
- 1980-06-27 DE DE19803024359 patent/DE3024359A1/en not_active Withdrawn
- 1980-06-27 NL NL8003736A patent/NL8003736A/en not_active Application Discontinuation
- 1980-06-30 FR FR8014526A patent/FR2460683A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2460683B1 (en) | 1985-05-10 |
| DE3024359A1 (en) | 1981-01-29 |
| JPS565538U (en) | 1981-01-19 |
| NL8003736A (en) | 1980-12-30 |
| US4271847A (en) | 1981-06-09 |
| AU532704B2 (en) | 1983-10-13 |
| AU5952680A (en) | 1981-01-08 |
| FR2460683A1 (en) | 1981-01-30 |
| JPS614371Y2 (en) | 1986-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |