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At least 19 recordsLinked to original sources
PubMed1995

Standard biopsy forceps versus large-capacity forceps with and without needle.

Endoscopic biopsy forceps vary in size and design. The purpose of this prospective randomized study was to compare the quality and quantity of gastric tissue obtained by needle and non-needle versions of standard biopsy forceps and newly designed large capacity forceps. Fifty consecutive patients who underwent endoscopy with gastric biopsy forceps were enrolled in the study. There was no significant difference in the presence of crush artifact between the two forceps, both with and without the presence of a needle. Both needle and non-needle versions of the large capacity biopsy forceps were found to obtain significantly larger sized specimens (p = 0.02) than needle and non-needle versions of the standard biopsy forceps. Overall, there was no significant difference in the depth of specimen obtained when comparing the large capacity forceps to standard forceps. Needle versions of each forceps were found to obtain significantly deeper biopsies than non-needle versions of each forceps. In conclusion, our study found that large capacity forceps obtained larger specimens than standard biopsy forceps. Further clinical trials with a larger study population need to be undertaken to determine the impact of these findings on the determination of diagnoses.

Analysis of Variance↗
PubMed2006

Angled forceps used for transbronchial biopsy in which standard forceps are difficult to manipulate: a comparative study.

OBJECTIVES: To evaluate the usefulness of the Sasada transbronchial angled forceps (STAF) in patients with peripheral pulmonary lesions (PPLs), which are difficult to manipulate with standard forceps. METHODS: We have invented the STAF, a forceps with an angled tip. One hundred ten patients with PPLs that were difficult to reach with standard forceps were retrospectively evaluated. The patients first underwent bronchoscopy with a standard forceps and then with the STAF. The specimens obtained with standard forceps and those obtained with STAF were separately fixed and analyzed histologically. We compared the histologic diagnosis of the specimens obtained by STAF with that obtained by the specimens obtained with standard forceps. Statistical significance was calculated with the McNemar chi(2) statistic. RESULTS: The diagnostic yield of all lesions from the specimens obtained with STAF (86 of 110 lesions; 78.2%) was significantly higher than that of lesions from the specimens obtained with standard forceps (43 of 110 lesions; 39.1%; p < 0.001). Among malignant lesions, the yield obtained with STAF (60 of 72 lesions; 83.3%) was significantly higher than that obtained with standard forceps (32 of 72 lesions; 44.4%; p < 0.001). Among benign lesions, the yield obtained with STAF (26 of 38 lesions; 68.4%) was also significantly higher than that obtained with standard forceps (11 of 38 lesions; 28.9%; p < 0.001). Among the different lesion areas, the right upper lobe plus the left upper division gave the greatest difference in yield (STAF, 46 of 60 lesions; 76.7%; standard forceps, 22 of 60 lesions; 36.7%; p < 0.001). Among the different size ranges, the diagnostic yields obtained with STAF were significantly higher than that obtained with standard forceps except for the size range of < or = 10 mm. There were two complications, pneumothorax and bronchial bleeding, both of which were controlled easily. CONCLUSIONS: The STAF was shown to be useful for obtaining specimens that were sufficient for histologic diagnosis from PPLs that were difficult to manipulate with standard forceps.

Adenocarcinoma↗
PubMed2005

[Obstetrical forceps: yesterday, today and tomorrow. Toward a new classification of obstetrical forceps].

OBJECTIVE: Obstetrical forceps are used worldwide since more than 400 years. In 2003 forceps deliveries accounted for 6.3% of all deliveries of the AURORE Grand-Lyon perinatal network. Although more than 400 different forceps have been described, obstetrics handbooks neither describe experimental forceps nor provide any chapter dedicated to instrumental delivery training. Our aim was to provide junior obstetricians with information that will allow them to select the best instrument and to let them know about experimental as well as pedagogic forceps. PATIENTS AND METHODS: International literature review using the terms "forceps" and "delivery" and a four year experimental work involving a close collaboration between obstetricians and biomechanics of the INSA engineering school. RESULTS: Two instruments are presented as well as a new forceps classification. DISCUSSION AND CONCLUSION: This classification distinguishes between three types of forceps: operational forceps designed to delivers neonates, experimental forceps designed to study biomechanics and training forceps designed for resident training. For the first time the classic blind forceps procedure is transformed in a full screen real time procedure.

Equipment Design↗
PubMedDate not supplied

Adequacy of disposable biopsy forceps for gastrointestinal endoscopy: a direct comparison with reusable forceps.

Disposable plastic biopsy forceps were compared prospectively to reusable stainless steel forceps. Thirty consecutive patients underwent a total of 249 biopsies, 124 with the disposable forceps, and 125 with reusable forceps. Biopsy locations included the esophagus, stomach, small intestine, colon, and common bile duct. Specimens were compared microscopically to determine overall surface area, depth, adequacy, and diagnostic result. The disposable biopsy forceps yielded specimens which were 37% smaller when compared with the reusable forceps. In five of the comparisons, minor differences in histological findings were noted between the two groups of biopsy specimens, but these differences did not alter the pathological diagnosis. However, in three cases in which superficial specimens were obtained, an underlying carcinoma was missed with the disposable forceps. Our study documents the utility of disposable biopsy forceps for mucosal lesions. In addition, there were 11 mechanical failures in 38 biopsy attempts with the plastic biopsy forceps. These forceps appear to be limited in their capacity to obtain adequate specimens from firm tissue or when submucosal biopsy samples are required, and they will require refinements in design to duplicate specimen quality obtained by traditional reusable forceps. Disposable forceps are particularly suitable for biopsy of mucosal lesions in patients with possible communicable disease, and they should help to reduce cross-contamination in the gastroenterology laboratory.

Biopsy↗
PubMed1987

Mid-cavity occipitoanterior forceps delivery--Laufe and Barnes forceps compared.

Laufe forceps are divergent forceps designed to reduce compressive forces upon the fetal skull during delivery from the pelvic outlet. Here we have undertaken a retrospective matched analysis in which Laufe (N = 75) and Barnes (N = 75) forceps were used for occipitoanterior mid-cavity forceps delivery. Our aim was to compare fetal and maternal outcome following use of these 2 types of forceps in the mid-pelvis. Fetal morbidity, categorized by trauma, low Apgar score or jaundice, was present in 31 of 75 infants delivered by Laufe forceps and in 47 of 75 infants delivered by Barnes forceps (p less than 0.01). Overall, maternal morbidity was statistically similar between the 2 groups although perineal trauma was more frequent in the Laufe group (p less than 0.05). We concluded that there appeared to be an improved fetal outcome following occipitoanterior mid-cavity delivery using Laufe forceps compared with Barnes forceps. These initial findings imply that in situations of fetal compromise, where forceps delivery from an occipitoanterior position in the mid-cavity is indicated, that Laufe forceps might be chosen.

Apgar Score↗
PubMed2001

Diagnostic quality of biopsy specimens: comparison between a conventional biopsy forceps and multibite forceps.

BACKGROUND: The endoscopic biopsy is a prerequisite for histopathologic diagnosis. Various types of forceps are used to obtain tissue specimens. The aim of this study was to assess and compare the diagnostic quality of biopsy specimens obtained with a conventional forceps and a Multibite forceps. METHODS: In a prospective, partially blinded, and randomized trial that included 250 patients referred for diagnostic upper and/or lower endoscopy, 510 biopsy specimens obtained with the Multibite forceps were compared with 520 specimens obtained with a conventional forceps. An experienced, blinded pathologist evaluated the specimens for diameter, depth of specimen, artifacts, anatomic orientation, vitality, general histologic quality, and diagnostic quality. Statistical analysis was performed by using the Fisher exact test. A p value of < 0.05 was regarded as significant. RESULTS: There were no statistically significant differences between the specimens obtained with the 2 forceps. The p values for the evaluated parameters were as follows: diameter 0.45, depth of specimen 0.56, artifacts 1.0, pathoanatomic orientation 0.40, vitality 0.45, and histologic diagnostic quality 0.53. CONCLUSION: The quality of biopsy specimens obtained with the Multibite forceps is comparable with that of specimens taken with a conventional forceps. Use of the Multibite forceps saves time in that 4 specimens can be obtained in 1 pass in situations in which a large number of specimens are needed or when the potential for transmission of infection is of concern.

Biopsy↗
PubMed1998

["An appropriate forceps"--150-year anniversary of Simpson's forceps].

Despite the increasing use of caesarean section and vacuum extraction, obstetric forceps is still in frequent use in obstetric wards. There has, in fact, been an increase due to more active management of births. More than 600 obstetric forceps have been described in detail, but only three of them are in use in Norway today: Simpson's and Kielland's forceps for vertex presentation and Piper's forceps for aftercoming head in breech presentation. This year it is 150 years since James Young Simpson (1811-70) of Edinburgh presented his forceps for the first time. Simpson's forceps has been the most widely used forceps in Norway over the last 120 years. This article describes James Young Simpson, his long forceps, and its use in Norwegian obstetrics.

Female↗
PubMed1991

Disposable endoscopic biopsy forceps: comparison with standard forceps of sample size and adequacy of specimen.

Disposable biopsy forceps have recently been introduced into the field of endoscopy. We have analyzed biopsy size and histologic interpretation of samples obtained with the disposable forceps and compared them to those obtained with reusable forceps. In the 18 patients studied, 49 samples were collected with the reusable forceps and 47 samples with the disposable. Biopsy sites included the colorectum in 50%, esophagus in 22%, small bowel in 17%, and stomach in 11% of the patients. We found that statistically smaller samples were collected by the disposable biopsy forceps than by the reusable (2.48 +/- 1.11 mm versus 1.99 +/- 0.55 mm, p = 0.006). The smaller biopsy size with disposable forceps was not clinically important since all but one of 47 specimens were interpreted as adequate for histologic diagnosis. The convenience, potential cost savings, and prevention of the spread of communicable agents afforded by disposable biopsy forceps make them a possible alternative to conventional forceps in some clinical settings.

Adult↗
PubMed2003

Management of the perineum during forceps delivery. Association of episiotomy with the frequency and severity of perineal trauma in women undergoing forceps delivery.

OBJECTIVE: To examine the association of the frequency and severity of perineal trauma with episiotomy performed at forceps delivery. STUDY DESIGN: This retrospective study analyzed all forceps deliveries at the Semmelweis Women's Hospital Vienna between February 1999 and July 1999. Evaluation of a possible association of episiotomy with the frequency and severity of perineal trauma was the main objective of the study. Episiotomy was not performed routinely and was either midline or mediolateral. RESULTS: In conjunction with forceps delivery episiotomy, 76/87 women (87%) underwent forceps delivery episiotomy; among those, 49/76 (64%) had a mediolateral episiotomy and 27/76 (36%) a midline episiotomy. The frequency and severity of perineal tears were significantly lower in forceps deliveries when an episiotomy was performed. When analyzing the type of episiotomy, the data revealed a statistically significantly lower frequency of perineal trauma when mediolateral episiotomy was performed as compared to midline episiotomy. CONCLUSION: If obstetric indications necessitate forceps delivery, performance of an episiotomy decreases the risk of perineal tears of all degrees. When analyzing the type of episiotomy, mediolateral episiotomy seems to be more protective against perineal trauma in women undergoing forceps delivery.

Adult↗
PubMed1979

Fetal risk in delivery with the Shute parallel forceps: analysis of 1,503 forceps deliveries.

A total of 1,503 vaginal deliveries with the Shute parallel forceps during a 10 year period are analyzed as to the risk of instrumental damage. In this series, 35 infants died intrapartum or neonatally. Eliminating all deaths from unrelated causes, three remain in which the forceps could possibly have been implicated. Investigation of these, however, revealed in each case the presence of other concomitant and potentially lethal factors, none of which could be completely ruled out as the primary cause of fetal death. Each of the three cases is discussed in detail. We conclude from our series that the Shute forceps is useful in the delivery of premature infants, but should be employed for this maneuver only by very experienced operators. In these cases, midforceps should be performed only for critical indications. The risk of damage with parallel forceps deliveries from the pelvic floor is minimal if decision for operation is based on cardiotocographic criteria, and under favorable degrees of oxygenation. In the delivery of the immature infants, the parallel forceps can, in fact, hardly be superseded by any other instrument because of its unique controlled protection of the fragile fetal head from even the pressures of the birth canal. Delivery with the Shute forceps can be performed effectively under pudendal block or local infiltration anesthesia.

Adult↗
PubMed2006

A new obstetric forceps for the training of junior doctors: a comparison of the spatial dispersion of forceps blade trajectories between junior and senior obstetricians.

OBJECTIVE: The purpose of this study was to create a new instrument for the training of doctors in the use of forceps and to compare the trajectories of forceps blades between junior and senior obstetricians. STUDY DESIGN: We equipped a simulator and forceps with spatial location sensors. The head of the fetus was in an occipitoanterior location, at a "+5" station. Forceps blade trajectories were analyzed subjectively with the 3-dimensional spatial graph and objectively based on 3 points of special interest. Each obstetrician performed 4 forceps blades placements. We compared the trajectories of junior and senior obstetricians. RESULTS: For senior operators, spatial dispersion was "excellent," "very good," or "good" in 92% of cases, whereas this was the case for only 38% of junior doctors (92% vs 38%; P < .001). CONCLUSION: A new instrument has been designed to demonstrate the trajectory of forceps blades during application in a simulator. The instrument captures the difference in experience between senior and junior clinicians.

Computer Simulation↗
PubMed1976

[A new obstetric forceps: the Bamberger divergent forceps (author's transl)].

A new obstetric forceps is presented which has been used since April 1975 in 52 cases for outlet forceps deliveries. The model is a divergent forceps with the rotational axis in the posterior 1/3. The forceps is applied as usual. The shanks do not cross. The distance between the blades is variable by a mechanism in the handle with an automatic stopping mechanism. Pressure on the fetal head is largely avoided. Our experience has shown that this forceps has advantages over the types of forceps in common usage.

Female↗
PubMed1995

[Effectiveness of the J-shaped LMA-holding forceps--F-forceps for LMA insertion].

F-forceps (Fukuhara's J Shaped LMA holding forceps) which enables correct laryngeal mask placement with ease was devised. Three methods using the forceps were tried in more than 1000 cases for administration of general anaesthesia. The results were compared with original Brain's method. The results were as follows; (1) Using F-forceps, success rate of proper placement without difficulties is much higher than with Brain's method, especially in F-III method with which 100% success was obtained. (2) After 7 trials, even beginners could shorten the time required for laryngeal mask placement by 10 seconds compared with their first trial. (3) Our method enables placement of the laryngeal mask without contacting patients. (4) One can master handling of the F-forceps with ease and shorten time necessary for placement of a laryngeal mask properly. (5) By applying F-II method, insertion of a laryngeal mask can be carried out without bending the patient's head. It is therefore suitable in patients with cervical vertebral injuries. F-forceps is considered to be highly useful for both anaesthesia and first aid.

Adolescent↗
PubMedDate not supplied

Multifunction vitreous forceps (maculorrhexis forceps).

We developed novel multifunction vitreous forceps to decrease the frequency of forceps insertion and enable the removal of the internal limiting membrane and other intravitreal membranes for better surgical results. The basic forceps were conventional continuous curvelinear capsulorrhexis (CCC) forceps. The size of the shaft is 23G and its pointed end measures 500 microm in diameter. Additionally, there is a platform in its tip. The pointed end with platform helps to hold the membrane because the outer sheath can be moved while the tip of the forceps is fixed in position, and its pen hold type grip helps to reduce hand movement. The most advantageous thing is that the sharp point enables us to make an initial flap easily and the desired area of internal limiting membrane can be peeled off by firmly holding the platform.

Capsulorhexis↗
PubMed2001

[With forceps all over the world--Christian Kielland and his forceps].

The history of the obstetric forceps is a colourful chapter in the history of medicine. Several hundred obstetric forceps have been described in detail, but most of them were minor modifications of the prototypes. However, the forceps invented by the Norwegian gynaecologist Christian Kielland (1871-1941) had a considerable impact upon the obstetric world during most of the 20th century. This ingenious instrument was demonstrated in Munich in 1915 and was gradually quite extensively used nearly all over the world. However, a great deal of controversy has surrounded his forceps, also in Norway.

History, 19th Century↗
PubMed1991

Diagnostic sensitivity of different techniques in the diagnosis of lung tumors with the flexible fiberoptic bronchoscope. Comparison of brush biopsy, imprint cytology of forceps biopsy, and histology of forceps biopsy.

Brush and forceps biopsies were done consecutively in 186 cases of pulmonary neoplasia with a flexible fiberoptic bronchoscope guided by x-ray television fluoroscopy. Imprint and histologic sections were prepared from all forceps biopsy specimens. The three techniques were compared for their diagnostic sensitivity. As a result 84.9% of all imprints, 80.6% of brush biopsy specimens, and 62.9% of histologic sections were positive for malignancy. The sensitivity of brush biopsy specimens was independent of the location and morphology of the tumors, but the sensitivity of forceps biopsy specimens was lower in neoplasms unidentified by bronchoscopy. The sensitivity of the diagnostic accuracy when all three methods were used jointly was 97.3%, and the specificity was 100%. Agreement in the final morphologic tumor type was found in 130 of 150 cases (86.7%) by positive brush biopsy specimens, in 136 of 158 cases (86.1%) by positive imprint cytology, and in 104 of 117 cases (88.9%) by positive histology from forceps biopsy specimens. For routine bronchoscopy, all three methods should be used in combination to obtain the highest diagnostic yield.

Biopsy↗
PubMed1995

[Presentation of the Salas obstetrical forceps (Forceps Salas)].

In the magazine of Gineco Obstetricia de México, January 1988, 30 to 34, I presented the three first models of the Salas forceps. In this article I describe the fourth and last design of my invention which has been patented in the USA as "Salas Obstetric Spatulas". It is mentioned in this article, the advantages of this instrument, which after being used in 533 applications by Dr. Fernandez del Castillo, SC and Dr. Viesca, MA they have come to the conclusion that the Salas instrument is excellent. Laufe et al in his book describe: There is no doubt that these forceps (Salas) could be made more acceptable to US practitioners. It is insisted in the modern classification of the forceps.

Delivery, Obstetric↗