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Results for “Operating Tables”

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At least 19 recordsLinked to original sources
PubMed1998

Modified Headholder and operating table for intra-operative MRI in neurosurgery.

In order to facilitate intra-operative use of magnetic resonance imaging (MRI) in neurosurgery an MRI-compatible headholder was developed and adapted to a modified MR-couch simultaneously serving as tabletop for the operating table. To allow shock-free transport into the scanner the wheels of the operating table were replaced by an air cushion mechanism. In 75 procedures the system proved to be reliable and safe. Image quality was not impaired by the fixation device. With growing routine the transfer became straightforward, requiring approximately 10 min. Intra-operative MRI is thus made possible with minimal changes to the standard surgical environment. Its benefit however, still remains to be critically investigated.

Equipment Design↗
PubMed1997

[From the bed onto the operating table. The transfer of patients from their bed to the operating table].

Perioperative nursing is still a much neglected area among the various fields of direct nursing care. This investigation was carried out within a framework of reevaluation and actualization of this area of care. The results show that in particular because of the working conditions of perioperative nursing high standards of professionally both with respect to details of care as well as to recognition of the overall situation of a patient are required.

Beds↗
PubMed2002

Tilting operating table with self-control foot switch: a new neurosurgical tool.

BACKGROUND: Observation of the surgical field from all directions is essential in microneurosurgery. A tilting operating table operated by the surgeon can satisfy this need. METHODS: A tilting operating table operated by the surgeon using a foot switch was developed by modifying the Sugita table incorporating the X-Y shifter. RESULTS AND CONCLUSIONS: The modified operating table allows the surgeon to move the patient in the head up or down directions, as well as the left side down or right side down directions, so the surgical field can be inspected from all aspects without changing the vertical axis of the operating microscope.

Equipment Design↗
PubMedDate not supplied

The operating table: a historical perspective.

Operating tables evolved rapidly from 1860 through 1920. By 1920, the operating tables were well-designed for a wide variety of operations. Today, our operating tables resemble those developed in the early 20th century.

Beds↗
PubMed1998

A sequential randomised controlled trial comparing a dry visco-elastic polymer pad and standard operating table mattress in the prevention of post-operative pressure sores.

Four hundred and forty-six general, vascular and gynaecological surgical patients were recruited to a two centre, double triangular sequential randomised controlled trial to compare the post-operative pressure sore incidence in patients positioned on the standard operating table mattress with those positioned on the dry visco-elastic polymer pad (Action Products Inc.). Two hundred and twenty two patients were randomised to the experimental group and 224 to the standard mattress. The main endpoint failure rate (a pressure sore) was found to be 11% (22/205) for patients allocated to the dry visco-elastic polymer pad and 20% (43/211) for patients allocated to the standard operating table mattress. There was a significant reduction in the odds of developing a pressure sore on the dry visco-elastic polymer pad as compared to the standard, [symbol see text] = 0.46 with 95% confidence interval of (0.26, 0.82), P = 0.010. The adjusted point estimates of the probability of developing a pressure sore on the dry visco-elastic polymer pad and the standard operating table mattress were 0.11 and 0.21 respectively.

Aged↗
PubMed1984

Operating tables and accessories for neurosurgical operations.

Two tables are described which are specially suited for neurosurgical operations. One has a fixed column and a removable table-top and the other is a mobile, battery-powered table. The facilities include different positions with special neurosurgical accessories for positioning anatomically adapted to the patient's body and for maximum stability of the operating field.

Neurosurgery↗
PubMed1982

A battery powered operating table with a removable stationary column base and a detachable table top.

AC and DC powered operating tables were investigated from the viewpoint of safety and the following results were obtained: 1) With the increase in supply voltage, leakage from cables increased prominently. Only a low leakage cable showed a low leakage value. 2) AC powered operating tables showed a high leakage current, especially when in remote control. 3) A battery powered operating table with freely removable driving base and detachable table top function, which we developed, proved to have a satisfactory durability for actual clinical use and an extremely low level leakage of electricity (0.1-0.3 micro A). Moreover, our design incorporates every merit guaranteed by the usual operating table.

Electric Power Supplies↗
PubMedDate not supplied

[Requirements for operating tables].

Analysis of current medical and engineering requirements for operating tables for adults and children is presented. Special attention is paid to the classification of operating tables, to the requirements for their design, operation, and service. Future trends in development of operating tables are discussed.

Adult↗
PubMed1982

[Multiple decubitus ophthalmological operating table].

A new ophthalmological operating table is presented which is adapted to the most recent developments in microsurgery and for the treatment of the most difficult cases of vitreoretinal pathology. The head of the table is mobile in the sagittal plane, movements being effected under remote-control by the surgeon at a rate of 2 mm/sec. The same movement can be applied to a horseshoe shaped armrest, which is solidly attached around the headpiece and is adjustable for height. A respiratory shield can be attached during local anesthesia, and the table can be positioned in proclivity or declivity. During vitreoretinal surgery, the table enables rotation of the patient in ventral decubitus along a longitudinal axis, rotation being possible manually or electrically. Proclivity and declivity positions can be obtained by rotation on a transversal axis. These functions assist exchanges between ocular fluids and substances used for internal packing, as well as passage into the anterior chamber of foreign bodies in the vitreal cavity.

Equipment and Supplies, Hospital↗
PubMed2000

Portable cushioned operating table siderails: an adjunct to pediatric surgery.

BACKGROUND: In an effort to prevent falls of pediatric surgical patients from the operating table, a set of portable cushioned operating table siderails was developed. METHODS: A set of portable cushioned operating table siderails was used in the operating room over a 5-year period in more than 2,550 cases. RESULTS: The portable cushioned siderails provided an effective, easily placed barrier to falling. No falls were recorded. CONCLUSIONS: Portable cushioned siderails provide an effective barrier to prevent pediatric surgical patients from falling from the operating table.

Accidental Falls↗
PubMed1996

Lumbar lordosis in spinal fusion. A comparison of intraoperative results of patient positioning on two different operative table frame types.

STUDY DESIGN: One hundred one patients undergoing spine surgery for degenerative conditions were entered into a prospective radiographic evaluation of changes in lumbar lordosis as affected by positioning on two different operative tables. OBJECTIVES: The hypothesis of the present study is twofold: 1) the positioning of patients on specific types of operative tables may affect significantly the overall degree of lumbar lordosis obtainable, and 2) certain operative positioning may more accurately reproduce physiologic standing lateral lumbar lordosis. SUMMARY OF BACKGROUND DATA: In the management of degenerative and post-traumatic spinal deformities, lumbar fusion using posterior instrumentation permits more accurate and physiologic lordotic positioning of the involved fusion segments of the lumbar spine. However, various types of operating frames are available for use in this type of surgery, and despite the overall importance of correct lordotic positioning, there is some question as to what effect on positioning, as measured in degrees of lumbar lordosis, a particular frame might have. METHODS: Total, multisegmental, and unisegmental Cobb angle measurements of preoperative standing lateral radiographs and intraoperative lateral radiographs after positioning on respective operative tables were determined. Fifty-one patients were positioned on an Andrews-type table, and 50 patients were positioned on the four-poster-type frame. Statistical comparison using analysis of variance testing of changes in lordosis before and after surgery between study groups was evaluated. RESULTS: Lumbar lordosis measured from L1 to S1 with standing lateral radiographs showed a combined mean preoperative measurement of 45.18 degrees, with no statistical significance between groups. In comparison, there was a statistically significant difference between intraoperative measurements from L1 to S1 on the Andrews table versus the four-poster frame, revealing an average of 32.81 degrees versus 47.71 degrees, respectively (P < 0.005). Multisegmental lordosis measurement from L2 to S1 displayed statistical significance between groups, with a combined preoperative standing lateral radiograph average of 43.32 degrees, and intraoperative values of 31.28 degrees on the Andrews table versus 45.34 degrees on the four-poster frame (P < 0.005). Multisegmental lordosis measurements from L4 to S1 displayed statistical significance between groups, with a combined preoperative standing lateral radiograph average of 31.40 degrees and intraoperative values of 23.14 degrees on the Andrews table versus 32.94 degrees on the four-poster frame (P < 0.005). Segmental lordosis at L5-S1 was less dependent on frame type, with a combined preoperative standing lateral radiograph average of 20.53 degrees and intraoperative measurements of 20.06 degrees on the Andrews table versus 21.02 degrees on the four-poster frame (P < 0.43). CONCLUSION: Results from the present study display a statistically significant difference between multisegmental and total lumbar lordosis, depending on the type of operative table used in patient positioning. Segmental lordosis at L5-S1 depended less on frame type. This table-dependent positional change in lumbar lordosis could be incorporated easily into a lumbar fusion procedure, especially when supplemented with instrumentation, affecting the permanent overall degree of lordosis. These results suggest that a more physiologic degree of lumbar lordosis is obtained accurately with use of an operative table similar to the four-poster frame.

Equipment Design↗
PubMedDate not supplied

Ergonomics: requirements for adjusting the height of laparoscopic operating tables.

BACKGROUND AND OBJECTIVES: In the last few years many new instruments and devices have been developed and introduced into the operating room (OR). A debate has been ongoing about the optimal ergonomic posture for the operating staff. From practical experience, we have learned that the operating tables cannot be adjusted adequately to allow surgeons of different stature to maintain a comfortable posture. The goal of this study was to establish the most ergonomic table height for the particular physique of the surgeon and the different types of laparoscopic instrument handles that he or she uses. METHODS: In a simulated model, two probands of different stature (50th [BS 50] and 95th [BS 95] percentile) used laparoscopic instruments with four different handle designs (shank, pistol, axial, and rod). The instruments were inserted into a board in three different angles ([IA] = 20 degrees, 30 degrees, 40 degrees). Additionally the elbow angles (EA) of the volunteers were fixed to either 90 degrees or 120 degrees. For every variable (size of surgeon and his or her elbow angle, design of handle, insertion angle of the instrument) the height of the board, as a parameter for the level of the abdominal wall of a patient with pneumoperitioneum, was measured from the floor. RESULTS: All parameters had an effect on the optimal operating table height. The lowest required operating table level was 30 cm, the highest was 60.5 cm. In laparoscopic surgery-long shafted instruments and patients with pneumoperitoneum-the tabletops are too high for over 95% of all surgeons. As skin incision and wound suture are performed the conventional way, the operating tabletop must be adjustable up to the common height of 122 cm. The maximal difference between the optimal heights of the OR-table for one volunteer using two different handles with different insertion angles of the instruments (BS 95, EA 90 degrees, IA 20 degrees, rod handle to BS 50, EA 120 degrees, IA 40 degrees, axial handle) was about 27 cm. CONCLUSION: New operating tables with a much lower adjustability are necessary to fulfill ergonomic requirements. The use of differently designed handles can hinder the ergonomic posture of the surgeon, because each handle requires a different working height.

Equipment Design↗