Mouth guide for operating microscope

1976 ◽  
Vol 44 (5) ◽  
pp. 642-643 ◽  
Author(s):  
Eugene H. Holly
Keyword(s):  
Operating Time ◽  
Operating Microscope ◽  
Content Type ◽  
Fine Print

✓ An inexpensive mouth guide is described, which increases the mobility of the operating microscope and effectively shortens operating time.

X-ray-translucent retractors in spine surgery

1986 ◽  
Vol 64 (3) ◽  
pp. 520-521 ◽  
Author(s):  
Peter Knöringer
Keyword(s):  
Spine Surgery ◽  
Vertebral Column ◽  
Operating Time ◽  
Surgical Instruments ◽  
X Rays ◽  
Content Type ◽  
X Ray ◽  
Image Intensification ◽  
Fine Print

✓ With surgery of the vertebral column under image intensification, surgical instruments and conventional metal retractors often obscure important x-ray landmarks. Surgery is more difficult, operating time is longer, and exposure to x-rays is increased. The author has developed x-ray-translucent retractors for ventral and dorsal operations. Although for reasons of strength these retractors have somewhat more bulk than equivalent metal retractors, they are sufficiently stable and are compatible with spacial requirements. They can be sterilized and reused.

On the origin and nature of the pituitary gland capsule

1977 ◽  
Vol 46 (5) ◽  
pp. 596-600 ◽  
Author(s):  
Ivan Ciric
Keyword(s):  
Pituitary Gland ◽  
Anterior Lobe ◽  
Pituitary Stalk ◽  
Operating Microscope ◽  
Pia Mater ◽  
Content Type ◽  
Fine Print

✓ Observations under the operating microscope confirming the presence of a pituitary capsule are reported. This capsule envelops the anterior lobe of the pituitary, the neurohypophysis, and the pituitary stalk. It merges along the stalk with the intracranial pia mater. The origin and nature of this capsule are discussed in light of the known facts of development of the pituitary gland and surrounding structures. It is concluded that the pituitary gland capsule is a derivative of the primitive pia mater.

The cryoprobe retractor in the microsurgical dissection of tumors

1978 ◽  
Vol 49 (1) ◽  
pp. 143-145 ◽  
Author(s):  
John I. Moseley ◽  
Robert W. Rand
Keyword(s):  
Spinal Cord ◽  
Operating Microscope ◽  
Content Type ◽  
Spinal Cord Ependymoma ◽  
Fine Print

✓ A technique is outlined for retraction of tumors under the operating microscope using the microcryoprobe. The method depends on temperature settings in the −20° to −30° C range to produce a small ice bond uniting tumor and cryoprobe. No attempt is made to create a solid frozen tumor. The locally avascular field and retraction provided ideal circumstances for microdissection. Examples of this approach are outlined with case summaries for spinal cord ependymoma and hemangioblastoma.

Experiences with sterilization of the operating microscope

1977 ◽  
Vol 47 (6) ◽  
pp. 861-863 ◽  
Author(s):  
Theodore Kurze ◽  
Michael L. J. Apuzzo ◽  
Martin H. Weiss ◽  
James S. Heiden
Keyword(s):  
Ethylene Oxide ◽  
Practical Experience ◽  
Operating Microscope ◽  
Content Type ◽  
Ethylene Oxide Gas ◽  
Ethylene Oxide Sterilization ◽  
Fine Print

✓ Experiments were conducted to assess the feasibility of both paraformaldehyde and ethylene oxide gas sterilization of the operating microscope. From these experiments and practical experience, it is concluded that ethylene oxide sterilization of the operating microscope is a feasible and desirable alternative to cumbersome draping techniques.

Preservation of facial and acoustic nerves in the total removal of large and small acoustic tumors

1981 ◽  
Vol 54 (2) ◽  
pp. 268-272 ◽  
Author(s):  
Wanxing Chai
Keyword(s):  
Relevant Literature ◽  
Operating Microscope ◽  
Total Removal ◽  
Content Type ◽  
Large Lesion ◽  
Acoustic Tumor ◽  
Fine Print

✓ Two cases are presented in which an acoustic tumor was totally removed without the aid of an operating microscope. In one of them, a large lesion was excised, with restoration of the patient's hearing postoperatively. The anatomical problems are analyzed, and the relevant literature is reviewed briefly.

Transcostovertebral approach for thoracic disc herniations

2001 ◽  
Vol 94 (1) ◽  
pp. 38-44 ◽  
Author(s):  
Dzung H. Dinh ◽  
John Tompkins ◽  
Shawn B. Clark
Keyword(s):  
Blood Loss ◽  
Average Length ◽  
Operating Time ◽  
Radicular Pain ◽  
Sensory Loss ◽  
Content Type ◽  
Disc Herniations ◽  
Axial Pain ◽  
Thoracic Disc ◽  
Fine Print

Object. The authors describe a new posterolateral transcostovertebral approach for the removal of herniated thoracic discs. Methods. From January 1994 to January 2000, 28 thoracic discs in 22 patients were excised via a new transcostovertebral surgical approach. Seventeen patients (77%) presented with axial pain, 14 (64%) with radicular pain, 13 (59%) with myelopathy, eight (36%) with sensory loss, and 10 (45%) with genitourinary (GU) symptoms such as urinary hesitancy or incontinence. The affected discs were approached using a midline incision to gain access of the costovertebral junction. The surgical corridor was posterolateral; the costovertebral joint and lateral edge of the vertebral endplates were drilled to expose the lateral annulus. The ribs were preserved, obviating the need for insertion of a chest tube postoperatively. The average operating time per level was 200.5 minutes (range 90–360 minutes). The average blood loss was 231 ml (50–750 ml). The average length of stay was 3.8 days. Most patients were discharged home on postoperative Day 2 or 3. No patients were worse postoperatively. Improvement was demonstrated in 13 (76%) of 17 patients with axial pain, 11 (79%) of 14 patients with radicular pain, 11 (85%) of 13 patients with myelopathy, seven (88%) of eight patients with sensory loss, and six (60%) of 10 patients with GU symptoms. Conclusions. This procedure is well suited for any thoracic disc level and offers several advantages over the traditional costotransversectomy or transthoracic approaches: shorter operating time, less blood loss, less extensive soft-tissue and bone dissection, reduced postoperative pain, and shorter hospital stays.

Instrumentation for microsurgical osseous dissection

1992 ◽  
Vol 76 (1) ◽  
pp. 156-158
Author(s):  
L. Philip Carter
Keyword(s):  
Soft Tissue ◽  
Binocular Vision ◽  
Surgical Approach ◽  
Operative Approach ◽  
Neurosurgical Procedures ◽  
Operating Microscope ◽  
Content Type ◽  
Operating Field ◽  
Fine Print

✓ The use of the operating microscope has revolutionized the surgical approach to many neurosurgical diseases. The microscope has provided magnification, binocular vision, and excellent lighting in the depths of neurosurgical wounds, allowing the performance of exceedingly delicate procedures that were previously impossible. Occasionally, an operative approach demands microscopic bone dissection. Instrumentation has been developed for working with soft tissue, but special instruments for osseous dissection have not been available. A set of newly developed punches and curettes with a bayonetted offset is described. These keep the surgeon's hand out of the operating field and allow unimpeded visualization through the operating microscope. These prototype instruments have been used successfully in over 100 microscopic neurosurgical procedures.

Digital recording in microsurgery

2000 ◽  
Vol 92 (1) ◽  
pp. 176-180 ◽  
Author(s):  
Kiyohiro Houkin ◽  
Satoshi Kuroda
Keyword(s):  
Success Rate ◽  
Digital Video ◽  
Video Recording ◽  
Digital Camera ◽  
Performance Ratio ◽  
Digital Recording ◽  
Operating Microscope ◽  
Content Type ◽  
Fine Print

✓ The authors examine the quality of intraoperative photography in which digital recording technology, including a microdigital camera and digital video paired with an operating microscope, is used during neurosurgery. A microdigital camera developed for this purpose (1.4 million pixels) was attached to an operating microscope and used during surgery. The same surgical views with precisely the same optical conditions were taken through the microscope by using both a conventional 35-mm camera and the microdigital camera, and the quality of the final output was compared. In addition, the quality of the digital camera photographs was compared with the still photograph clipped from the digital video recording.The quality of the photographs taken with a microdigital camera was superior to the quality of those obtained with the conventional 35-mm camera. The success rate of recording (what you see is what you get) was almost 100%. The quality of the still photographs clipped from the digital video was nearly equal to those taken with the digital camera. The microdigital camera system is superior to the conventional 35-mm camera in neurosurgery in terms of its success rate and the quality of the photography. It is also a space-saving system for storing the huge amount of data generated in the recording of surgical procedures, and the cost/performance ratio is superior to that of the conventional method. Digital technology including digital cameras and videos is very useful for clear recording of microsurgical procedures.

Transoral resection of axial lesions augmented by intraoperative magnetic resonance imaging

2001 ◽  
Vol 95 (2) ◽  
pp. 239-242 ◽  
Author(s):  
Taro Kaibara ◽  
R. John Hurlbert ◽  
Garnette R. Sutherland
Keyword(s):  
Magnetic Resonance ◽  
Mr Imaging ◽  
Operating Time ◽  
Spinal Instrumentation ◽  
Odontoid Process ◽  
Mr Images ◽  
Content Type ◽  
Cervicomedullary Junction ◽  
Transoral Resection ◽  
Fine Print

✓ Transoral decompression of the cervicomedullary junction may be compromised by a narrow corridor in which surgery is performed, and thus the adequacy of surgical decompression/resection may be difficult to determine. This is problematic as the presence of spinal instrumentation may obscure the accuracy of postoperative radiological assessment, or the patient may require reoperation. The authors describe three patients in whom high-field intraoperative magnetic resonance (MR) images were acquired at various stages during the transoral resection of C-2 disease that had caused craniocervical junction compression. All three patients harbored different lesions involving the cervicomedullary junction: one each of plasmacytoma and metastatic breast carcinoma involving the odontoid process and C-2 vertebral body, and basilar invagination with a Chiari I malformation. All patients presented with progressive myelopathy. Surgical planning MR imaging studies performed after the induction of anesthesia demonstrated the lesion and its relationship to the planned surgical corridor. Transoral exposure was achieved through placement of a Crockard retractor system. In one case the soft palate was divided. Interdissection MR imaging revealed that adequate decompression had been achieved in all cases. The two patients with carcinoma required placement of posterior instrumentation for stabilization. Planned suboccipital decompression and placement of instrumentation were averted in the third case as the intraoperative MR images demonstrated that excellent decompression had been achieved. Intraoperatively acquired MR images were instrumental in determining the adequacy of the decompressive surgery. In one of the three cases, examination of the images led the authors to change the planned surgical procedure. Importantly, the acquisition of intraoperative MR images did not adversely affect operating time or neurosurgical techniques, including instrumentation requirements.

Stereoscopic television system for use with the operating microscope

1985 ◽  
Vol 62 (4) ◽  
pp. 610-611 ◽  
Author(s):  
Kenichiro Sugita ◽  
Yohji Ohohigashi ◽  
Shigeaki Kobayashi
Keyword(s):  
Surgical Procedures ◽  
Beam Splitter ◽  
Operating Microscope ◽  
Television System ◽  
Simple Method ◽  
Content Type ◽  
Visual Objects ◽  
Mirror Box ◽  
Fine Print

✓ A new and simple method of stereoscopic television imaging of surgical procedures performed under an operating microscope has been developed. Two television cameras of the same type, two television monitors of the same size, and a mirror box for fusion of the two visual objects on the two television monitors are used. No significant modifications of available components are necessary. The method can be applied to all operating microscopes with a beam splitter.

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