Rapid assessment of laser-induced photochemistry in single microdroplets is afforded by on-demand microdroplet generation coupled to a commercial ion-trap mass spectrometer. Single microdroplets (diameter ∼50 μm, 65 pL) fall on a steel needle held at +2 kV where they subsequently form a spray that is directed toward the inlet of an ion-trap mass spectrometer. It is demonstrated that single micr...

OBJECTIVE The technique used to perform transabdominal chorionic villus sampling (CVS) is not standardized, but aspiration of villi is generally obtained by discontinuous vacuum created in a syringe, manually or by a hand-grip device. We evaluated the feasibility of a new method of performing CVS which employs a 4-mL Vacutainer connected to the needle, producing a continuous negative pressure. ...

GaSb inversion-mode PMOSFETs with atomiclayer-deposited (ALD) Al2O3 as gate dielectric are demonstrated. A 0.75-μm-gate-length device has a maximum drain current of 70 mA/mm, a transconductance of 26 mS/mm, and a hole inversion mobility of 200 cm/V · s. The OFF-state performance is improved by reducing the ALD growth temperature from 300 ◦C to 200 ◦C. The measured interface trap distribution sh...

To facilitate their use in trace gas analysis, the adsorption capacity of needle trap devices (NTDs) was increased by combining three adsorbent materials and increasing total adsorbent amount. The use of 22 gauge needles, application of internally expanding desorptive flow technique without cryofocusation and a new on site alveolar sampling method for NTDs provided sensitivity in the parts per ...

STUDY OBJECTIVE Epinephrine autoinjector use for anaphylaxis is increasing. There are reports of digit injections because of incorrect autoinjector use, but no previous reports of lacerations, to our knowledge. We report complications of epinephrine autoinjector use in children and discuss features of these devices, and their instructions for use, and how these may contribute to injuries. MET...

Ultrasound elevation beamwidth is the out of plane thickness causing image artefacts normally appearing around anechoic areas in the medium. These artefacts could also cause uncertainties in localizing objects (such as a surgical needle) in the ultrasound image slices. This thesis studies the clinical significance of elevation beamwidth artefacts in needle insertion procedures. A new measuremen...

Abstract Background Endoscopic ultrasound-guided fine-needle aspiration/biopsy (EUS-FNA/B) is a standard method for pathological diagnosis of pancreatic solid lesions. The EchoTip ProCore 20G® (PC20), 20-gauge biopsy needle with forward-bevel core trap, has been available in Japan since 2015. Methods We compared the efficacy PC20 that 22G® (PC22) and Acquire (AC22) EUS-FNA/B diagnosing cancer. ...

10.1586/14750708.3.5.591 © 2 Botulinum toxin type A (BTX-A) has recently emerged as an effective therapeutic option to control palmar hyperhidrosis. The main problem with this treatment is the intense pain felt by the patient during the penetration of the needle to inject BTX-A into the densely innervated skin of the palm. Injection of needle-free lidocaine, delivered through a needle-free devi...

The amount of pressure exerted on the syringe and the depth of needle insertion are the two key factors for successfully carrying out epidural procedure. The force feedback from the syringe plunger is helpful in judging the loss of pressure, and the depth of the needle insertion is crucial in identifying when the needle is precisely placed in the epidural space. This article presents the develo...

The Robopsy device is a lightweight, largely plastic telerobot (shown below in Fig. 1A) that affixes directly to a patient’s chest to pivot the needle in two degrees of freedom about a skin insertion point [1]. This is accomplished via two motor-actuated concentric, crossed and partially nested hoops. A medical image-based interface converts doctor clicks on the DICOM images to motor commands t...