39results about How to "The instrument is easy to operate" patented technology

An instrument for surgical suturing includes a shaft, and a needle disposed slidably for longitudinal travel with respect to the shaft. A prong formed on one end of the shaft projects across a longitudinal axis of the needle and has an opening formed through the prong that provides a clearance through which a tip portion of the needle passes when it is advanced. Slots formed on a surface of the prong facing the shaft releasably hold suture across the opening. Advancing the needle through the clearance allows a hook formed on the tip of the needle to capture the suture. Once withdrawn, the needle draws the suture back through tissue pierced during advancement. The suture is released from the slots and drawn back through the tissue for further knot tying and suturing to effect the tissue repairs.

A suction retraction surgical instrument retracts tissue and removes smoke, fluid, debris and other matter from a surgical site. The instrument includes an elongate body having a proximal section, a distal section and a central section. A vacuum or suction channel is defined within the elongate body. The instrument includes a retractor at the distal section of the elongate body. The retractor has an inner surface and an outer surface defining a suction port. The suction port is adapted to remove smoke, blood and other matter from the surgical site. The instrument includes a suction connector at the proximal section of the elongate body. The suction connector is in communication with the vacuum channel. The suction connector is adapted to aid in communication with a vacuum system for removal of smoke, fluid and other matter from the surgical site.

An apparatus for generating a correcting cut surface in the cornea of including a laser unit, which can focus and move pulsed laser radiation; a first contact element; and a control unit, controlling the laser unit which has a standard setting which, when a standard curvature is imposed upon corneal surface by the first contact element, would lead to a standard cut surface. The standard cut surface has a known curvature with respect to a reference surface. The curvature, with respect to the reference surface of the correcting cut surface to be generated deviates from the known curvature of the standard cut surface. The apparatus includes a second contact element adapted to generate the correcting cut surface, which cornea imposes an actual curvature deviating from the standard curvature, thus generating a cut surface using the standard setting results in the correcting cut surface to be generated.

A hand-operated cutting apparatus including a main frame at least including a front wall, a base wall and two side walls, in which an opening is formed in the front wall, and a rack formed on an upper surface of the base wall along the length of the main frame, a bracket disposed between the side walls of the main frame and movable along the length of the main frame, a cutter provided in the front of the main frame and including a cutting blade located within the opening, and a squeezer attached to the front surface of the bracket facing to the cutter. The bracket includes a base, a handle pivotally provided on the base and a pusher arm pivotally provided on the handle, in which a lower end of the pusher arm is located between two teeth of the rack, and the pivot axis of the pusher arm on the handle departs from the pivot axis of the handle on the base towards the rear of the main frame.

The surgical instrument includes a shaft having a distal end portion and a proximal end portion; an operative device is disposed on the distal end portion. A hand mechanism has a first handle and a second handle and is disposed on the proximal end portion. Movement of the second handle relative to the first handle actuates the operative device. A ratchet, attached to the second handle, locks the operative device and moves with the second handle. The ratchet is pivotally attached to the second handle and pivots between a locked position and an unlocked position. A biasing device biases the ratchet toward the locked position and a release mechanism for moves the ratchet from the locked position. At least one of the release mechanism and the ratchet has a feature permitting relative movement between the release mechanism and the ratchet.

A method for rapidly detecting TNT in water based on surface-enhanced Raman spectroscopy relates to a Raman spectroscopy detection method. The method of the invention comprises the following steps: synthesis of gold nanoparticles; molecular modification of TNT; surface-enhanced Raman spectroscopy detection of TNT standard substances; and detection of samples. The pretreatment is simple, instrumentoperation is simple, and the detection can be realized without a professional; the detection time is short, the instrument is convenient, and the on-site rapid detection is convenient; the accuracy is high, the detection cost is low, and the detection limit is low.

A medical apparatus, includes a medical instrument with an acquisition unit for a magnetic resonance signal, the acquisition unit exhibiting a non-constant sensitivity profile in the azimuthal direction relative to an axis of the medical instrument. An azimuthal orientation of the medical apparatus is determined by an evaluation unit from magnetic resonance signals received by the acquisition unit.

The invention discloses a high-entropy alloy coating and a preparation method thereof, and belongs to the technical field of laser surface modification. High-entropy alloy powder is prepared from Co,Cr, Fe, Mn, Ni and ferro-boron, wherein the molar ratio of Co to Cr to Fe to Mn to Ni to ferro-boron is 1:1:1:1:1:0.8. The preparation method comprises the steps that Co, Cr, Fe, Mn, Ni and ferro-boron metal powder is evenly mixed and subjected to vacuum ball milling for 3 h or more, and CoCrFeMnNiB0.8 high-entropy alloy powder is obtained; and the CoCrFeMnNiB0.8 high-entropy alloy powder is preset on the surface of a pretreated substrate to form a prefabricated layer, and a high-entropy alloy cladding layer is obtained by laser cladding. According to the high-entropy alloy coating and the preparation method thereof, the cladding layer obtained by laser cladding has good macro morphology, the metallurgical bonding between the coating and the substrate is good, and the characteristics of high hardness, high high-temperature oxidation resistance and the like are achieved.

The invention discloses a method for detecting microelements in chromium powder. On an inductively coupled plasma atomic emission spectrometer, the best detection condition and the optimum detection wavelength of to-be-detected microelements are selected, and the standard work curve is obtained by detecting standard serial solutions of chromium substrates; a sample solution is detected according to the detection conditions of the standard serial solutions and the best detection wavelength of each microelement, and corresponding spectral line intensity of to-be-detected microelements in the sample solution is obtained; the content of the to-be-detected microelements in the sample solution is determined according to the acquired standard work curve and the corresponding spectral line intensity of the to-be-detected microelements in the sample solution. The content of multiple microelements in chromium powder can be measured simultaneously with the detection method; with the adoption of amatched standard work curve method of the of chromium substrates, spectral interference of the substrates with chromium as a major component to microelement determination is eliminated, influence ofa hydrochloric acid solution to the substrates is also eliminated, and the accuracy of the microelement detection result is high.

An apparatus for perforating or cutting and scoring paper cards, such as greeting and place cards. The apparatus includes hinged first and second arms held open by a spring. A die and a platen are attached to the arms and include a long blade, two spaced apart short blades, a scoring bar and spacer bars. An edge of a card is placed between the die and the platen against the spacer bars and when the arms are brought together, the card is cut and scored so that a brace is formed from one of the card panels. The brace is separable and may extend from one panel to another to provide support for the card when the card is displayed. The apparatus may be hand held and hand operated or the die and platen may be attached to powered stamping equipment.

The invention discloses a method for detecting the copper content in rice based on the single-pulse laser-induced breakdown spectrum technology. The method includes the steps that 1, the rice is soaked with a copper solution, after the rice is dried at room temperature, grinding and sieving are carried out, and the rice is pressed into tablets through a tablet press; 2, laser-induced breakdown spectrum data X of various test samples is acquired; 3, flame-atomic absorption spectroscopy is selected to measure the real content Y of copper in the samples with various concentrations; 4, according to the corresponding relation between wavelengths and elements, original LIBS spectrum data is searched for wave crest intensities X1 corresponding to Cu I 324.754 nm and Cu I 327.396 nm; 5, after abnormal samples are removed, data X2 is obtained; 6, the data X2 is preprocessed, and a data set X3 is obtained; 7, by means of linear fitting, X3 serves as input, Y serves as output, and a linear regression model is established; 8, the linear regression model is used for carrying out quantitative analysis on the copper content in a certain number of samples, and the accuracy of the model is verified.

A facial beautifying and care apparatus includes a beauty bar (1) having an air supply passage (A), a negative pressure connecting hole (132), a conductive suction nozzle (15) and a first connection port (134); an EMS generation module (20) inside the beauty bar (1) electrically connected to the first connection port (134); an external negative pressure unit (6) separated from the beauty bar (1) and having a negative pressure driving control module (62) and a second connection port (637); the negative pressure driving control module (62) having an air supply tube assembly (66) with a negative pressure communicating hole (661); a communicating tube (7) communicating with the negative pressure connecting hole (132) and the negative pressure communicating hole (661); a conductive wire (8) connected to the first connecting port (134) and the second connecting port (637). Accordingly, the effects of facial skin firming, cleaning, beautifying and caring are achieved.

The invention discloses a method for measuring the embedding rate of flavor molecules in a amylose-flavor molecule clathrate compound. The method comprises the steps of preparing an amylase standard solution, preparing the amylose-flavor molecule clathrate compound, preparing a titrating solution-potassium iodate water solution, carrying out potentiometric titration, calculating the embedding rate of the flavor molecules in the amylose-flavor molecule clathrate compound according to a formula, etc. After the method is adopted, the embedding rate can be accurately and conveniently measured, so that the operation time is shortened, and the method is especially suitable for online detection. Furthermore, the measurement method is simple in operating instrument and cheap in needed reagent, so that the testing cost is greatly lowered.

The invention discloses a rigid body rotational inertia tester which comprises a horizontally arranged base plate, a three-line pendulum device arranged on the right side of the base plate and a measurement and control system arranged on the left side of the base plate, and the three-line pendulum device comprises a support rod, an upper cross beam plate, three cycloids, a line length measurementand control device, a lower swing disc, a movable test platform and a test platform lifting mechanism. A photoelectric sensor and an angle positioner are arranged on the movable test platform, and themeasurement and control system is connected with the wire length measurement and control device, the test platform lifting mechanism and the photoelectric sensor. The cycloid length of the three-linependulum device can be set and adjusted according to requirements, the expansibility is high, and the experiment efficiency is greatly improved through motor control; experiment efficiency is increased greatly; in addition, the angle positioner can control the swinging angle of the lower swing disc to be smaller than 6 degrees, a circular mirror surface is installed in the center of the upper surface of the tray, nine equidistant concentric circles are marked on the surface of the lower swing disc, so that it is guaranteed that the center of the lower swing disc coincides with the center of ameasured rigid body rotating shaft, and experimental data are more accurate.

The invention discloses a peripheral blood vessel detector for electronic pressure measurement of an ultrasonic doppler flat probe. The detector is characterized in that the detector is composed of aninner core, an ultrasonic doppler probe, a photoelectric probe, an electronic pressure measurement device, a display screen, a control panel, a printer and a key module. According to the peripheral blood vessel detector, the blood flow speed of peripheral arterial can be detected through the inner core of an instrument, the blood flow speed and pulse rate can be detected in a noninvasive and fixed point mode, the blood flow waveform is analyzed, and meanwhile a frequency spectrum analysis method is adopted, the blood flow power spectrum, blood vessel blocking and highest systolic pressure onthe point are analyzed; three kinds of blood flow waveform testing modes (doppler, PPG and PVR) are used; ABI/TBI parameters are tested conveniently and quickly, the peripheral blood vessel conditionis diagnosed, and the peripheral blood vessel detector is a good auxiliary detection tool for medical workers.

Disclosed is an bioelectrical impedance measuring apparatus which is simplified in structure and which is easy to use. A measuring apparatus comprising a personal data input unit which is used in inputting personal data and a plurality of electrodes which are used in measuring bioelectrical impedance is improved according to the present invention in that it comprises: a memory in which the personal data are stored via said personal data input unit; and a control device which carries out a required control by using at least one selected electrode to store the personal data in said memory or to retrieve the personal data from said memory.

The invention discloses a quantitative fingerprint spectrum detection method for components of a common goldenrop capsule, and the method specifically comprises the following steps: (1) preparing a test solution and a reference substance mixed solution, taking four components of uridine, adenine, 5-hydroxymethylfurfural and guanosine as reference substances, respectively adding solvents for dissolving, and uniformly mixing to obtain the reference substance mixed solution; (2) analyzing and determining the two solutions prepared in the step (1) by adopting an ultra-high performance liquid chromatograph under the chromatographic conditions that an ultra-high performance liquid chromatography system is selected as an instrument, and a Waters ACQUITYUPLC HSS T3 chromatographic column (100mm * 2.1 mm, 1.8 [mu] m) is selected as a chromatographic column; carrying out isocratic elution by taking pure water as a mobile phase; and (3) determining common peaks and quantitative detection indexes according to 10 different batches of chromatograms, and evaluating the quality of the common bupleurum capsule according to the similarity and content of the fingerprints. The method can provide a scientific basis for quality control of the common goldenrop capsule.

The invention discloses a step pulse test method of a semiconductor device based on LabVIEW, and belongs to the field of semiconductor device test. The method is applied to a step pulse test system ofthe semiconductor device, and comprises the following steps: mounting LabVIEW, NI VISA, and LabVIEW-based upper computer software for controlling a Keithley 2461 digital source meter on an upper computer; placing a semiconductor device to be tested on a probe platform base, and connecting a probe with the semiconductor device to be tested; setting all pulse source related parameters and related functions on the upper computer at one time; and triggering an operation button to run the step pulse test system of the semiconductor device, and displaying scanning result data in a data output areaof a software front panel. The instrument operation is simplified, the data analysis is more convenient and effective, and the shortcomings of low usability, low speed and low efficiency of the traditional pulse test are overcome.