115 results about "Cutting needle" patented technology

A tissue sampling device (10) includes a sheath (20) having an inner surface having a proximal end and a distal end, and an inner surface defining a passage. An inner tube (50) is disposed within the passage. The inner tube has an inner surface defining a passage, and an outer surface radially spaced outward from the inner surface. A cutting needle is pivotally mounted to the inner tube and pivots between a first position radially inward of the inner surface of the sheath and a second position substantially radially outward of the outer surface of the inner tube. Relative movement between the inner tube and the sheath causes the cutting needle to move between the first position and the second position. Rotation of the inner tube relative to the sheath when the cutting needle is in the second position causes the cutting needle to remove tissue in a helical path.

An automated device and method for obtaining a tissue biopsy and the delivery of a material to provide hemostatis, therapeutic agents or marker material is described that can be used in conjunction with a cutting needle biopsy device. The device has an outer casing, a power source, a drive mechanism, an application chamber through which the biopsy mechanism, typically a cutting needle device, passes through and an application channel. The cutting biopsy mechanism has a mechanical or electromechanical mechanism to rapidly fire a stylet with a biopsy trough into the intended tissue and then rapidly propel a biopsy cannula over the stylet to sever and retain tissue that has protruded into the biopsy trough. At least one application channel is formed by a tube centrically slipped over the biopsy cannula wall. To enable the collection of tissue specimens, the distal segment of the application channel forms a close fitting and concentric sheath around the biopsy cannula. The biopsy cannula wall projects out of the tube with its acute-angularly designed cutting edge and the tube end encloses an obtuse angle with the biopsy cannula. The proximal end of the application channel has a larger diameter than the distal end allowing for unobstructed flow of the application material past the biopsy cannula wall upon retraction of the biopsy cannula from the distal segment of the application channel. The drive mechanism contains holders for placement of the application chamber and the biopsy mechanism and a method to manipulate the proper sequence and movement of the two.

The invention relates the microscopic cutting device. The invention overcomes the defects of strong working strength, fatigability and big personal error. The device comprises computer 1, microscope 2, CCD cam 3, free mechanical micro motion desk 4, clamp 5, ultrasonic vibration emitter 6, cutting needle 7, biological section stage 8 and cutter bar. 2 is installed under 8, 3 is connected with 2 to collect the object magnified by 2, the signal output terminal of 3 is connected with signal input terminal of 1, 4 is installed at the side of 8, the signal output terminal of 1 is connected with controlling terminal of 4, 5 is fixed on the 4, 11 is fixed on the 5, one end of 11 is connected with one end of 6, the other end of 6 is connected with the butt of 7, the tip of 7 extends to the upper surface of 8, and the other signal output terminal of 1 is connected with the input terminal of 6.

A knit fabric may be formed by providing a plurality of cylinder needles and a plurality of cutting needles having a cutting surface. A first yarn may be fed to the plurality of cylinder and the plurality of cutting needles to form loops during a knitting cycle. A second yarn may be fed to the plurality of cylinder needles during the knitting cycle so that the first yarn and the second yarn having a plated relationship on the plurality of cylinder needles. A pile may be formed on the knit fabric by cutting the loops on the cutting needles with the cutting surface.

The invention relates to a cutting needle advancing and retreating structure of a rotary-cut needle and the rotary-cut needle with the same. The cutting needle advancing and retreating structure of the rotary-cut needle comprises a shell, a needle point part and a cutting part. The needle point part comprises a needle point, a needle sleeve and a gear a. The needle point is welded to one end of the needle sleeve, the other end of the needle sleeve is located in the shell, the gear a is fixed to the other end of the needle sleeve through a gear fixing block, and the side wall of the end, close to the needle point, of the needle sleeve is provided with a cutting through hole. A cutting part comprises an inner sleeve, a worm, a worm fixing block and a gear b, the worm and the gear b are arranged in the shell, one end of the inner sleeve is arranged in the needle sleeve, sawteeth are arranged at one end of the inner sleeve, and a bevel chamfer is arranged. A round hole is formed beside the sawteeth, the other end of the inner sleeve is in close fit with the worm, the gear b is also in close fit with the inner sleeve, and the worm fixing block is fixed to a lower shell and in screw fit with the worm. The rotary-cut needle can fill in the domestic blank through the simple structure and the sharp puncture cutting capacity.

The invention discloses a sterile take-and-place box for orthopedic cutting needles. The box comprises a box body, a weighing unit, a spray disinfection unit, a lifting unit and a needle taking unit;a rear side plate of the box body is fixedly connected with a rotating motor, the outer arc surface of the output shaft of the rotating motor is fixedly connected with a needle taking cylinder, and the outer end of the arc surface of the needle taking cylinder is provided with four uniformly arrayed needle grooves; and the lower end of the rear side plate of the box body is fixedly connected witha transition plate, the front end of the transition plate is fixedly connected with the inner surface of a front side plate of the box body, the transition plate is arranged corresponding to the needle taking cylinder, the right end of the lower surface of the transition plate is connected with an L-shaped baffle through an elastic hinge, and the lower end of the right side surface of the verticalpart of the L-shaped baffle is fixedly connected with a pressing the plate. The sterile take-and-place box for the orthopedic cutting needles can visually display the number of the orthopedic cuttingneedles in the box body, adopts a double sterilization manner, realize thorough sterilization, automatically takes the needles, can close a needle taking opening in time to prevent external bacteriafrom entering the box, and is convenient to use.

The invention provides a vacuum-assisted mammary gland rotary cutting system. The system comprises a touch screen (1), a vacuum control system (2), a driving handle (3), GMT probes (4) and a multi-angle automatic rotary cutter (5), a trolley and vacuum tube kits and accessories; the touch screen (1) is provided with a touch screen data transmission port (1-1); the vacuum control system (2) provides vacuum pressure required for the entire system, drives a handle interface, controls the rotary cutting speed and identifies the probes, and tissue is sucked into a cutter groove through downward vacuum and sucked and conveyed through backward vacuum; the driving handle (3) comprises a handle driving connecting line (3-1), and a biopsy stent guided under X rays is arranged; the GMT probes (4) comprise the 7G puncture rotary cutting needle, the 10G puncture rotary cutting needle and the 12G puncture rotary cutting needle, and each GMT probe comprises a probe assembly (4-1), a rotary cutting puncture needle shell (4-2), a sample collection box assembly (4-3) and a probe protection sleeve (4-4), and the GMT probes (4) are compatible with various images; the multi-angle automatic rotary cutter (5) has 60-degree, 180-degree, 240-degree and 360-degree automatic rotary cutting modes preset by a program. The invention further provides a corresponding use method.

The invention discloses a nesting method of irregular residual material. The method includes: firstly, selecting irregular residual material, setting a smallest rectangle fully covering the irregular residual material according to the irregular residual material, and allowing the periphery of the smallest rectangular to cover the irregular residual material; secondly, nesting the irregular residual material into a conventional rectangular nesting board, nesting profiles of other actual parts to the body of the irregular residual material; and thirdly, guiding a cutting needle to cut the profiles of the other actual profiles. The residual parts include perforated rectangular parts in the same shape as the irregular residual material. The irregular residual material is fully applied, utilization rate of materials is high, operation is convenient, defining and using are convenient for various pieces of software, and the method is adaptable to various encoding systems.

A sewing machine includes a thread take-up, a thread take-up driving mechanism driving the thread take-up, a thread cutting mechanism including a fixed cutting blade and a movable cutting blade both cutting the needle thread and a movable cutting blade driving mechanism driving the movable cutting blade, a thread wiper wiping the cut needle thread away over workpiece cloth, a wiper driving mechanism driving the thread wiper, and a control device which, upon receipt of a needle thread cutting command to actuate the thread cutting mechanism, controls the movable cutting blade driving mechanism and the wiper driving mechanism so that the thread wiper carries out a thread amount securing operation to secure a predetermined amount of needle thread located downstream relative to a needle eye of a sewing needle in a state previous to cutting of the needle thread where the needle thread is seized by the movable cutting blade.

The invention relates to a production process of a Boa-plush cutting needle for a circular knitting machine. The cutting needle is of a sheet body and mainly comprises a hook, a blade and a needle body. Barbs are formed on two opposite sides of the hook; cutting edges are formed on two opposite sides of the blade. The barbs of the hook and the cutting edges of the blade of the cutting needle are formed at one step by a punch and then subjected to heat treatment. Since the cutting needle is formed by punching directly, the individual bending process is omitted; since the barbs of the hook and the cutting edges of the blade are subjected to the punching process directly, metal density of the corresponding positions of the cutting needle is high, and service life of the cutting needle is prolonged. The conventional process of bending to form barbs at hooks through needle making equipment by multiple steps is changed, basic processing of the cutting needle is completed by the punch at one step, only the heat treatment is needed, and multiple manual operation steps are omitted, so that labor force is saved, production efficiency is increased greatly and product quality is guaranteed further.

A handheld device (1) for extraction of tissue samples (27) is disclosed, comprising a needle arrangement (25) and control arrangement (2), said needle arrangement (25) comprising a cutting needle (4) and a sample extraction needle (3), said needle arrangement (25) having a first end (28) for inserting into tissue (30),—said cutting needle (4) comprising a cutting edge (23) for cutting said tissue sample (27) from said tissue (30),—said sample extraction needle (3) comprising a side opening (5) for receiving said tissue (30), said control arrangement (2) comprising a vacuum chamber (24) in fluid communication with said sample extraction needle (3), the vacuum chamber (24) comprising a first member (8) and a second member (9), said first and second members (8, 9) being adapted to move relative to each other, wherein said first member is mechanically connected to said cutting needle (4), and wherein said handheld device (1) is configured so that—a movement between said first member and said second member to increase the volume of said vacuum chamber (24) and thereby reduce the pressure in said sample extraction needle induces—a movement between said cutting needle (4) and said sample extraction needle (3) to expose said side opening (5) of said sample extraction needle (3).

A liver biopsy puncture needle includes a needle cannula, wherein a cutting window is arranged at a position close to the needle head of the puncture needle cannula; the needle tail position of the puncture needle cannula is provided with a handgrip; a cut needle core is pierced in the cannula of the puncture needle; a cut needle core includes a positioning block; the cutting section is a fixing piece adapted to the inner wall of the puncture needle cannula; the fixing piece is provided with a cutting blade; the outer structure of the cutting blade is adapted to the outer structure of the cutting window; the side of the cutting blade is provided with a tissue fixing piece; and the needle body of the cutting needle core is provided with a positioning block. The invention discloses a liveerbiopsy puncture needle and a use method thereof. The puncture needle has simple structure, and only needs the cooperation of a puncture needle cannula and a cutting needle core to complete the puncture operation. One or more tissues can be punctured at the pathological part at one time, and one or more tissue can be punctured at different positions at the pathological part at one time.

The invention discloses a manufacturing process for a circular knitting machine work drum. The manufacturing process comprises the following steps: a blank work drum is roughly turned through a roughturning device; a finish turning device conducts finish turning on the roughly-turned blank work drum to form a needle-groove-free work drum; grooving devices groove the surface of the needle-groove-free work drum to form a work drum with a needle groove; when grooving is still conducted, polishing devices polish the cut needle groove; and the needle groove in the surface of the polished work drumis tested to judge whether the needle groove is qualified or not. The manufacturing process is short in manufacturing time and high in automation degree. The invention further discloses manufacturingequipment for the circular knitting machine work drum. The manufacturing equipment for the circular knitting machine work drum comprises a rotatable and lifting base; the multiple grooving devices and the multiple polishing devices are arranged surrounding the base; and the polishing devices are located at the downstream of the grooving devices. Through adjacent arrangement of the cutting devicesand the polishing devices, after the needle groove is cut in the surface of the work drum, the polishing devices can polish the cut needle groove, the time of cutting-before-polishing is shortened, and the production efficiency is improved.

The invention relates to an automatic anti-toxin gel cutting machine and an imager. The automatic anti-toxin gel cutting machine comprises a base plate and a cold cutter. The base plate is square and is provided with a first grid. The cold cutter is a cover lid. A second grid is arranged on the top of the cover lid. The first grid is the same with the second grid. Cutting needles or cutting pieces are arranged on the cover lid. The base plate is matched with the cover lid. The anti-toxin gel cutting machine is arranged in the imager. The invention further provides a cutting method of the anti-toxin gel cutting machine. The automatic anti-toxin gel cutting machine, the imager and the cutting method of the anti-toxin automatic gel cutting machine have the advantages that the shape and the position of gel to be cut can be determined through the grid on the base plate, gel cutting is completed in the imager under the coordination of the cover lid, a human body is prevented from making contact with ultraviolet rays and ED colorants during gel cutting, and therefore the harm of the ultraviolet rays and the ED colorants to the human body is avoided.

A sewing machine includes a needle bar to which a sewing needle is attached, a needle bar up-and-down motion mechanism moving the needle bar up and down and a cutting unit including a cutting needle having a distal end formed with a blade and a cutting needle up-and-down motion mechanism which is independent of the needle bar up-and-down motion mechanism and moves the cutting needle up and down. The cutting unit is located on a sewing machine bed with the blade being directed upward.

The invention relates to a processing method of a glass fiber short-cutting needled felt. The method comprises the following steps that thermoplastic resin in a flowing state is poured on a glass fiber needled felt, and the thermoplastic resin fully mixed and soaked the glass fiber needled felt; and the glass fiber needled felt is the short-cutting needled felt for GMT, and the thickness is 10-15cm. The processing method of the glass fiber short-cutting needled felt method has the advantages that the short-cutting needled felt for the GMT is developed, and the product single weight is uniform;and through repeated tests, a produced product can meet requirement of different clients and different glass fiber reinforced plastic products on the needled felt, the requirement of the glass fiberreinforced plastic production process for fluidity and expansion height is met, and meanwhile, the requirement for strength of the product is met.

A sewing machine includes a detection unit configured to detect a moving direction of an object to be processed when the object placed on a sewing machine bed is moved in any direction, a cutting needle having a distal end formed with a blade edge and configured to form a cut in the object, an up-down drive mechanism configured to reciprocate the cutting needle in an up-down direction, a rotational drive mechanism configured to rotate the cutting needle about a rotation axis line of the cutting needle, and a control device configured to control the up-down drive mechanism and the rotational drive mechanism based on a result of detection by the detection unit so that the cutting needle forms the cut in the object while changing an orientation of the blade edge according to the moving direction of the object.

The invention discloses a foamed composite geomembrane for water control and seepage control in the project of reservoir, river, road, culverts, dam and the trash treating factory, which is prepared by welding or sticking at least one layer impervious layer (1) and at least one layer foaming layer (2). The connection side-face of impervious layer (1) with the foaming layer (2) can be equipped with a reinforcing layer (3), the impervious layer (1) being made up of high-density polyethylene film or polychloroethylene film, the foaming layer (2) made up of continuous foaming material such as polyphenylacetylene and polyethylene, the reinforcing layer (3) being a braided fabric or net of the glass fibre/ polyester/ polypropylene. It can avoid the problem of infiltration conduced by that the cutting needle pierces the geomembrane in the construction and usage process, and avoid the problem of stabbing working people. It is soft and elastic, and is facile to use or transport.

The invention discloses a concentration controllable ultrasonic soybean milk machine device and a working method thereof. The device comprises a cavity body, a top cover, a base, a grinding device, a heating device, a testing device, a top cover display control module and a cavity body assisting control module; the grinding device comprises a mechanical blade grinding device and an ultrasound grinding device; the testing device comprises an ultrasound transmitting transducer, an ultrasound receiving transducer and a temperature sensor. In the controlling method, mechanical cutting needles are used for conducting grinding on large particulate matters, and then the further refining of small particulate matters can be achieved through ultrasonic grinding. According to the concentration controllable ultrasonic soybean milk machine device, the advantages of the mechanical cutting and the ultrasound grinding are combined, and mutual complementation is conducted, the grinding time is shortened, the grinding quality is improved, further more, soybean milk is ground more sufficiently, the taste is finer and smoother, the device not only can use the mechanical effect of ultrasonic waves to achieve the fine grinding and stirring but also obtain the information of the soybean milk concentration through the measurement of the propagation velocity of the ultrasonic waves in the soybean milk, and therefore the controllability of the soybean milk concentration is achieved.

A cutting needle (1) for knitting machines and similar applications has been provided, said cutting needle having a needle body (2) on which a knife (6) is detachably held, preferably by means of a detent device (19). Such a cutting needle (1) reduces the maintenance costs of knitting machines and discloses ways for optimizing needle bodies (2) and knives (6) in view of manufacturing technology and materials.

A horizontal machine sinker device capable of preventing the feed distance clip from vibrating and a feed distance clip are provided in the present invention. It has an extending part (15a), a knitting yarn fall-preventing parts (15b, 15c), and an entering part (15d) for preventing the feed distance clip from vibrating. The entering part (15d) enters from the middle of the extending part (15a) to a needle slot (16a) direction that is apart from gear open (18) direction, tow sides are clamped by a needle plate (16). On the upper surface of the needle bed (12), at the part arranged with the extending part (15a) and the entering part (15d), forming step part (12b). It can easily form step part (12b) by processing such as cutting needle bed (12) along the gear open (18) longitude direction. To lead the extending part (15a) to reliably prevent from vibration, when the entering part (15d) two sides end edges connects with the needle plate (16) end part (16d).