scholarly journals MTI (Dendron) Variable Detachable Coils

2003 ◽  
Vol 9 (1) ◽  
pp. 47-52
Author(s):  
J. Thammaroj ◽  
V. Jayakrishnan ◽  
S. Lamin ◽  
S. Jenkins ◽  
E. Teasdale ◽  
...  
Keyword(s):  
Endovascular Treatment ◽  
Feasibility Study ◽  
Clinical Experience ◽  
Cerebral Aneurysms ◽  
Detachable Coils ◽  
Formed Part ◽  
Small Aneurysms ◽  
Initial Clinical Experience

We present our initial clinical experience of Dendron Variable Detachable System (VDS) coils, now Sapphire VDS from MTI, in the endovascular treatment of cerebral aneurysms. VDS coils, uniquely, can be detached at variable points along their length, allowing placement of as much or as little as desired of the coil within the aneurysm. Our ten patients formed part of a multicentre feasibility study. VDS coils were successfully deployed in all but one aneurysm. The electrolytic detachment mechanism with practice is both simple to use and reliable. The coils are however slightly stiffer than standard coils limiting their use in small aneurysms. This remains a technology in evolution.

Surgical Management of Cerebral Aneurysms in Comparison with Endovascular Treatment

1998 ◽  
Vol 4 (1_suppl) ◽  
pp. 149-152 ◽  
Author(s):  
H. Ohnishi ◽  
N. Kosimae
Keyword(s):  
Endovascular Treatment ◽  
Skull Base ◽  
Surgical Management ◽  
Skull Base Surgery ◽  
Cerebral Aneurysms ◽  
Surgical Results ◽  
Aneurysm Surgery ◽  
Mortality And Morbidity ◽  
Detachable Coils ◽  
Carotid Aneurysms

We report our surgical results of 92 intrabasal (below the ophthalmic segment) carotid aneurysms and 16 basilar aneurysms after the era of skull base surgery. These lesions were the most difficult location for neck clipping of aneurysms. Mortality, surgery associated mortality and morbidity of intrabasal carotid aneurysm surgery were 2.2%, 0% and 9.7% respectively. Mortality and morbidity of basilar ameurysm surgery were 0% and 6.2% respectively. Although endovascular treatment of cerebral aneurysms with detachable coils is premising treatment due to its convenience and less invasiveness, results of this treatment must be superior to the results of microsurgery for it to become a widely accepted therapy.

Surgical dislocation and periacetabular osteotomy through a posterolateral approach: a cadaveric feasibility study and initial clinical experience

2004 ◽  
Vol 14 (2) ◽  
pp. 49-57 ◽  
Author(s):  
Michael Leunig ◽  
Dominique Rothenfluh ◽  
Martin Beck ◽  
Sean E Nork ◽  
Emanuel Gautier ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Clinical Experience ◽  
Periacetabular Osteotomy ◽  
Posterolateral Approach ◽  
Surgical Dislocation ◽  
Initial Clinical Experience

Magnetic Resonance Angiography for Evaluation of Intracranial Aneurysms Treated with Guglielmi Detachable Coils

1998 ◽  
Vol 11 (1) ◽  
pp. 19-25 ◽  
Author(s):  
E. Cotroneo ◽  
M. Dazzi ◽  
R. Gigli ◽  
G. Guidetti ◽  
G.P. Cantore ◽  
...  
Keyword(s):  
Endovascular Treatment ◽  
Mr Angiography ◽  
Cerebral Aneurysms ◽  
Digital Subtraction ◽  
Contrast Injection ◽  
Guglielmi Detachable Coils ◽  
Non Invasive ◽  
Mri Angiography ◽  
Detachable Coils

Thirteen cases of cerebral aneurysms submitted to endovascular treatment using Guglielmi detachable coils (GDC) are described. Control MRI-angiography 3D TOF was performed three and six months later. In order to spare patients the discomfort and risks related to repeated trauma and iodate contrast injection, we examined the possibility of an alternative non-invasive diagnostic method. For this purpose, the digital subtraction angiograms performed three and six months after embolisation were compared with the MR-angiograms obtained in the same period, all using the same tomograph at middle field intensity (0.5T). We discuss the outcome of this comparison and the limits of the MR-angiography method in the follow-up of aneurysms submitted to endovascular treatment.

Endovascular treatment of cerebral aneurysms following incomplete clipping

1997 ◽  
Vol 87 (2) ◽  
pp. 184-189 ◽  
Author(s):  
Kent R. Thielen ◽  
Douglas A. Nichols ◽  
Jimmy R. Fulgham ◽  
David G. Piepgras
Keyword(s):  
Endovascular Treatment ◽  
Cerebral Aneurysms ◽  
Surgical Clipping ◽  
Content Type ◽  
Coil Occlusion ◽  
Neurological Morbidity ◽  
Posterior Circulation Aneurysm ◽  
Detachable Coils ◽  
Fine Print

✓ The authors report their experience using electrolytically detachable coils for the treatment of residual cerebral aneurysms following incomplete surgical clipping. Eight patients were treated for six anterior and two posterior circulation aneurysm remnants. All patients were referred for endovascular treatment by experienced cerebrovascular neurosurgeons at the authors' institution. Patients underwent follow-up angiography immediately after endovascular treatment. In seven of the eight patients, additional follow-up angiographic studies were obtained at periods ranging from 7 weeks to 2 years posttreatment. The latest follow-up angiograms demonstrated that six of the eight aneurysm remnants were 100% occluded, with near-complete occlusion of the other two aneurysm remnants. There was no permanent neurological or non-neurological morbidity or mortality associated with the treatment. There was no incidence of aneurysm hemorrhage during or after treatment. Endovascular treatment of cerebral aneurysm remnants following prior surgical clipping can be accomplished with acceptable morbidity and mortality rates. Endovascular coil occlusion can play an important adjunctive role in the treatment of those aneurysms that have been incompletely obliterated by surgical clipping.

scholarly journals Endovascular Treatment of Anterior Circulation Cerebral Aneurysms by Using Guglielmi Detachable Coils

2007 ◽  
Vol 17 (2) ◽  
pp. 98-107
Author(s):  
Jana Wolynski ◽  
Pasquale Mordasini ◽  
Gerhard Schroth ◽  
Alain Barth ◽  
Rolf W. Seiler ◽  
...  
Keyword(s):  
Endovascular Treatment ◽  
Cerebral Aneurysms ◽  
Guglielmi Detachable Coils ◽  
Anterior Circulation ◽  
Detachable Coils

scholarly journals Histological Investigation of Endothelial Cell Proliferation on the Coil Surface after Endovascular Treatment Using FactorXIII

2001 ◽  
Vol 7 (1) ◽  
pp. 29-33 ◽  
Author(s):  
K. Hino ◽  
Y. Konishi ◽  
A. Shimada ◽  
E. Sato ◽  
M. Hara ◽  
...  
Keyword(s):  
Endothelial Cell ◽  
Endovascular Treatment ◽  
Factor Xiii ◽  
Cerebral Aneurysms ◽  
Coagulation Factor ◽  
Endothelial Cell Proliferation ◽  
Coil Embolisation ◽  
Electron Microscopic ◽  
Scanning Electron Microscopic ◽  
Detachable Coils

Recently, endovascular treatment of coil embolisation has been widely used for obliterating cerebral aneurysms. However, the process of endothelial cell growth within aneurysms to prevent aneurysmal rupture associated with endovascular coil embolisation remains unclear. Fourteen aneurysms were produced in seven matured swine and embolised with Guglielmi Detachable coils (GDCs). The aneurysms were resected either immediately or three weeks after coil embolisation, and subjected to histological and scanning electron microscopic examinations. Blood coagulation factor XIII was administered in four animals on the day of embolisation and on the following four days. These aneurysms were also resected three weeks after the embolisation and investigated histologically. Marked fibroblast proliferation and growth of endothelial cells on the intraluminal surface of the coil were observed more often in the group administered factor XIII than in those not given factor XIII. These results suggest that administration of factor XIII may contribute to more effective aneurysm obliteration during coil embolisation.

Endovascular treatment of experimental aneurysms in rabbits using Guglielmi detachable coils - a feasibility study

2002 ◽  
Vol 44 (11) ◽  
pp. 946-949 ◽  
Author(s):  
Möller-Hartmann W. ◽  
Krings T. ◽  
Hans F. ◽  
Thiex R. ◽  
Meetz A. ◽  
...  
Keyword(s):  
Endovascular Treatment ◽  
Feasibility Study ◽  
Guglielmi Detachable Coils ◽  
Detachable Coils

scholarly journals Coil Embolization for Ruptured Cerebral Aneurysms of 2×3 mm Diameter

2006 ◽  
Vol 12 (1_suppl) ◽  
pp. 97-100 ◽  
Author(s):  
O. Tone ◽  
H. Tomita ◽  
M. Tamaki ◽  
H. Akimoto ◽  
K. Shigeta ◽  
...  
Keyword(s):  
Coil Embolization ◽  
Three Dimensional ◽  
Cerebral Aneurysms ◽  
Artery Aneurysm ◽  
First Case ◽  
Detachable Coils ◽  
The Mean ◽  
Aneurysmal Neck ◽  
Small Aneurysms ◽  
Made In

Small ruptured cerebral aneurysms, such as those of 2×3 mm diameter, are considered to be difficult to embolize by detachable coils because of the risk of procedural perforation of the aneurysms. We have treated these small aneurysms and report the techniques and pitfalls of these embolizations. Twenty-four patients with ruptured cerebral aneurysms of 2×3 mm diameter were intended for treatment by coil embolization. Before coil embolization, three-dimensional digital subtraction angiography was performed, and the simulation of the volume embolization ratio (VER) was performed in all patients, except for the first basilar artery aneurysm patient. The tip of the microcatheter was steam-shaped several times and was placed on the neck of the aneurysm. A balloon neck remodeling technique was used for two aneurysms. GDC 10 softs and soft SRs were used for the first ten aneurysms, and Ultrasofts were used for the last eleven aneurysms. Out of twenty-four aneurysm embolizations, we aborted the procedure in three cases, because of a failure in catheterization; we performed clipping surgery for these cases. For the first case of a basilar tip aneurysm, the aneurysm was perforated, due to the use of too long a coil and the insertion of the tip of the microcatheter into the aneurysmal dome. Minor infarction occurred in one patient. The mean VER was 33.9%, and two aneurysms recanalized, and out of these one needed a second embolization. Six months postoperatively, 81% of patients had made in a good recovery or had a moderate disability. We recommend the following techniques to embolize aneurysms of 2×3 mm diameter: the tip of the microcatheter should be stabilized on the aneurysmal neck by steam shaping of the microcatheter, GDC 10 soft and Ultrasoft should be selected for use, and the simulation of the VER should be performed before embolization to select coils of a suitable length.

Balloon-assisted extrasaccular coil embolization technique for the treatment of very small cerebral aneurysms

2010 ◽  
Vol 112 (3) ◽  
pp. 585-588 ◽  
Author(s):  
Alberto Gil ◽  
Pedro Vega ◽  
Eduardo Murias ◽  
Hugo Cuellar
Keyword(s):  
Endovascular Treatment ◽  
Coil Embolization ◽  
Cerebral Aneurysms ◽  
Endovascular Embolization ◽  
Review Of The Literature ◽  
Endovascular Techniques ◽  
Ruptured Aneurysms ◽  
Intraoperative Rupture ◽  
Small Aneurysms ◽  
Very High

Treatment of very small ruptured cerebral aneurysms (< 2 mm) continues to present a challenge. These lesions are difficult to treat both with neurosurgical and endovascular techniques. A neurosurgical approach is still the treatment of choice for these lesions at many centers because of high rupture rates related to endovascular treatment; however, there are clinical circumstances in which the neurosurgical option cannot be offered. In their review of the literature, the authors did not find any series reporting endovascular treatment of these very small aneurysms. In the present study, the authors report their experience with the endovascular treatment of a series of 4 ruptured aneurysms smaller than 2 mm from neck to dome. They describe their technique of using a remodelling balloon to stabilize the tip of the microcatheter in the neck of the aneurysm without entering it at any time, and of inserting the coil from outside the sac to minimize the risk of intraoperative rupture, which is very high when conventional endovascular embolization is performed.

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