109 results about "Cut 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.

Needles are provided including elongate tubular cannulas having proximal portions, distal portions, and cannula walls defining cannula lumens. A distal portion of an elongate tubular cannula may include a distal end, one or more apertures disposed through, and along a first length of, the cannula wall in a pattern enhancing flexibility relative to a second length of the cannula wall lacking the apertures, and a sealing member disposed on the apertures. The apertures impart enhanced flexibility to the needle for navigating through tortuous pathways.

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.

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 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 an in-mould automatic-shearing pouring gate mechanism applied into a mould. The in-mould automatic-shearing pouring gate mechanism comprises an oil cylinder, a first ejector plate, a second ejector plate and a pouring gate cutting needle, wherein the oil cylinder is arranged on the two sides of a mould and is fixedly connected with a foot pad; the first ejector plate is arranged above a lower fixing plate and comprises a first upper ejector plate and a first lower ejector plate, and the first ejector plate is provided with an ejector pin which is used for ejecting products; the second ejector plate is arranged above the first ejector plate, is connected with the oil cylinder and comprises a second upper ejector plate and a second lower ejector plate, and the oil cylinder drives the second ejector plate to eject and return; and one end of the pouring gate cutting needle is arranged in the second ejector plate, and the other end of the pouring gate cutting needle is contacted with a pouring gate. According to the in-mould automatic-shearing pouring gate mechanism disclosed by the utility model, no cutting action is required after the product is ejected, so that the manpower and equipment costs are saved, and the cut and sheared parts of the product and the pouring gate are relatively beautiful.

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.

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).

The invention discloses a positioning and milling equipment for bamboo plywood, which comprises a downwardly rotating drill bit and an automatic feeding drilling power head for driving the drill bit. Two horizontal fixed plates are arranged below the drill bit. The two fixed plates Arranged in parallel in the vertical direction, there is a space between the two fixed plates for the insertion of wooden plates that need to be punched, and positioning holes are opened on the two fixed plates, the positioning holes and the apertures of the holes that need to be processed on the wooden plates The same, two positioning holes with the same central axis and the same aperture in the vertical direction cooperate to fix the drilling position of the wooden board. There are multiple cutting needles on the outside of the drill bit. The cutting needles are evenly distributed around the circumference of the drill bit. The cutting needles Inscribed with the positioning hole, the central axis of the cutting needle is parallel to the central axis of the drill bit. The invention adds a cutting needle outside the drill bit, which can effectively avoid cracks in the wooden board and solve the problem of serious damage to the wooden board.

The invention belongs to the field of medical equipment, and particularly relates to a suction cutting type multipoint sampling needle with an active deformation function. The suction cutting type multipoint sampling needle with the active deformation function comprises a rigid external sheath and a plurality of suction cutting sampling needles. Each suction cutting type sampling needle comprises an outer containing needle body and an inner cutting needle body, a concave hole is formed in the outer containing needle body for collecting and storing tissue samples, the inner cutting needle body is used for cutting the tissue samples collected and stored in the outer containing needle body, and sampling is conducted in a suction and cutting combined mode. The suction cutting type multipoint sampling needle provided by the invention is provided with a plurality of pre-bent inner needles, multiple parts of a tumor can be sampled in a one-time puncture sampling process, and the suction cutting type multi-point sampling needle can adapt to different sampling conditions by replacing the inner needles with different pre-bent shapes. According to the multipoint sampling needle of the invention, the sampling efficiency is improved, meanwhile, the sampling effect is ensured, the effectiveness of sampling samples is improved, and injuries caused by sampling to patients are relieved.