1307 results about "Microtome" patented technology

A sectional cassette (10) for use in a process for harvesting and handling tissue samples for biopsy analysis is disclosed. In the procedure, a tissue biopsy sample is placed on a tissue trapping supporting material (A′) that can withstand tissue preparation procedures, and which can be cut with a microtome. The tissue is immobilized on the material, and the material and the tissue are held in the cassette (10) subjected to a process for replacing tissue fluids with wax. The tissue and supporting material are sliced for mounting on slides using a microtome. Harvesting devices and containers (200) using the filter material (202) are disclosed. An automated process is also disclosed.

A method and apparatus for monitoring and evaluating the performance and condition of histology laboratory microtomes and microtome accessories including knives, motor drives, and illumination devices. Irregularities in an image of the surface of a block mounted on the microtome are detected and characterized, the block having been subjected to mechanical sectioning by the microtome to produce a cut block face. The image of light reflected from the surface of the block, either specular or non-specular, is recorded and subjected to graphical analysis to extract, quantify, and interpret patterned features, including those indicating anomalies in the function of the microtome, its accessories, or the tissue block itself.

A sectionable cassette for use in a process for harvesting and handling tissue samples for biopsy analysis is disclosed. In the procedure, a tissue biopsy sample is placed on a tissue trapping and supporting material that can withstand tissue preparation procedures and which can be cut with a microtome. The tissue is immobilized on the material and the material and the tissue are held in the cassette and are subjected to a process for replacing tissue fluids with wax, and then the tissue and the supporting material are sliced for mounting on slides using a microtome. Harvesting devices and containers using the filter material are disclosed. An automated process is also disclosed. One embodiment has the tissue trapping and supporting material porous and another embodiment includes a tissue supporting material that is not easily microtomed.

A method and apparatus for embedding cells that utilizes a flow-through embedding technique maximizes the efficiency of extractions and decreases time for embedding the cell fragments, minimizes cell loss, and automatically positions cell samples at the position in which a microtome blade will section them. The apparatus includes a cell flow pathway defined by an inflow tube for delivering cell fragments from a cell sample to a sample port. The sample port is in fluid communication with a tissue cassette having attached thereto a filter. The cell flow pathway is in communication with a reagent flow pathway for delivering the reagents through the sample port to the cassette. The apparatus is configured such that the application of pressure directs the cell fragments from the cell sample through the cell flow pathway, and effects delivery of the reagents through the reagent flow pathway. The apparatus produces an embedded cell block having concentrated cells near the plane of the block to be sectioned in a quick and efficient manner.

An easily adjustable food slicer for cutting various foods having a frame with a sloped cutting surface that is equipped with interchangeable cutting blades that face a selectively positioned primary ramp that is pivotally joined to the frame opposite the location of the blades. The ramp is removable and has a non-abrasive, smooth surface that can be raised or lowered by the use of an infinitely-adjustable cam. The cam has a knob located on a side surface of the frame and can be adjusted at anytime before and during a process allowing a user to vary the thickness of the slice of food. Also provided is an alternative secondary ramp with an abrasive, grating surface for grating food that can be installed after removal of the primary ramp.

A food article feed apparatus for a food article slicing machine. The apparatus has conveyor with a drive belt for connecting a drive source to a drive roller, and a conveyor belt. The drive roller is for driving the conveyor. The drive roller has an outer diameter and a recessed diameter where the drive belt is connected around the recessed diameter and the conveyor belt is connected around the outer diameter. The drive belt operates within an area defined by the first conveyor belt.

The disclosure relates to a cassette, frame and mold for holding a tissue sample during an embedding and mircotoming process, and related methods. The cassette is sectionable in a microtome and includes a body with a bottom wall and a plurality of side walls. First and second side walls are generally V-shaped to present an apex of the “V” to the microtome blade. A lid of the cassette is stiffer than the bottom wall of the cassette to assist with positioning the tissue sample. The side walls of the cassette are perforated so as to significantly reduce the amount of cassette material that must be cut by the microtome blade. In one embodiment, to additionally reduce blade wear the ribs on one side wall are offset lengthwise relative to the ribs on an opposite side wall. An upper flange of the cassette includes depressions configured to register with detents in the frame.

According to the present state of the art, endoscopic cannulation of the common bile duct and papillotomy and/or sphincterotomy of the Papilla of Vater and/or the Sphincter of Oddi is accomplished by advancing a sphincterotome (or papillotome or cannulotome) into an endoscope/duodenoscope so that the distal tip of the sphincterotome exits the endoscope adjacent the sphincter muscles at the Papilla of Vater. The endoscope mechanisms are then manipulated to orient the distal tip of the sphincterotome to the desired position for proper cannulation of the duct. Accurate and consistent control of the length of the exposed blade is made difficult due to a number of factors. These factors include: 1) differences in the inside diameters of the outer tube and the needle knife wire, 2) the orientation of the needle knife wire within the outer tube, 3) the mismatch of tolerance of the needle knife wire and the inside diameter of the extrusion, 4) anatomy, and 5) endoscope manipulation. A sphincterotome incorporating the present invention will provide the user with an indication of the exposed blade length and will allow the physician to control the length of the exposed blade. According to one embodiment of the present invention, various visual indications are presented to the user as the needle knife is advanced from its outer sheath. These visual indications, combined with a mechanical method to hold the knife in position during catheter placement allows the user to perform precise incisions. Presently available products that may be modified according to the present invention include, but are not limited to, Boston Scientific Sphincterotomes and Needle Knives.

A novel food processing system for dividing a flow of food items into a plurality of streams, gently and quickly transporting the food items along a flume of fluid propelled by eductors to several slicers, transversely slicing the food items at a controlled rate to maximize yield, washing the slices, transporting the slices and controllably distributing the slices onto a conveyor for further processing. In accordance with one embodiment of the present invention, the food processing system comprises an oversized-product separator, a segmented cutter, a mass-flow/spreading conveyor, a diverter stage, an eductor stage, a dewatering stage, a starch removal stage, a slicer infeed conveyor, at least one transverse slicer, and a slice spreader. In a preferred embodiment, cutting losses are decreased by minimizing slicing speeds.

Tomatoes are placed on parallel cutter blades (20) in article openings (46) of an article positioning plate (44). Alternate blades are oscillated in arcuate paths in opposite direction as article pushers (24) move downwardly, pushing the tomatoes through the parallel cutter blades (20). The end slices of the tomatoes are gathered separately in the collectors (96) and are later discarded, while the intermediate slices are received in a transfer plate (78). Gathering plates (100) urge the intermediate slices of the several tomatoes together in one accumulation of tomato slices, and the transfer plate (78) is lowered to a position immediately above the shipping containers (80) and opened to deposit the tomatoes in the shipping containers. A fluid spray nozzle (75) may be positioned to emit a spray of gas or liquid between the fins of the pushers and/or toward the cutter blades (20) and toward engagement with the tomatoes for sterilizing, cleaning, or other treatment of the tomatoes and the adjacent surfaces.

Methods, apparatuses and systems for facilitating automated or semi-automated collection of tissue samples cut by a microtome. In one example, a collection apparatus may be moved back and forth between respective positions at which the collection apparatus is operatively coupled to a microtome so as to collect cut tissue samples, or routine access to the microtome is provided. Relatively easy movement and positioning of the collection apparatus is facilitated, while at the same time ensuring structural stability and appropriate alignment and/or isolation between the collection apparatus and the microtome. A fluid reservoir receives samples cut by the microtome, and the collection apparatus may collect samples via a conveyor-like substrate disposed near/in the reservoir. A linear movement of the substrate may be controlled based on a cutting rate of the microtome, and the fluid level in the reservoir may be automatically maintained to facilitate effective sample collection.

A cassette for holding a tissue sample includes a body having a bottom wall and a plurality of side walls extending upwardly with respect to the bottom wall to define an interior space for receiving the tissue sample. A lid is configured to be received in the interior space, and the cassette is sectionable in a microtome. Sensing elements are associated with the body or lid and configured to allow an automated sensing system to determine at least one characteristic of the cassette. A flange extends along upper portions of at least two of the side walls and includes a plurality of holes. Other features are included to more effectively and efficiently manufacture and use the cassette.

Methods and apparatus for providing and processing serial tissue sections. In one example, an “automatic tape collecting lathe ultramicrotome” (ATLUM) slices a block of tissue sample having various geometries into a continuous ribbon of thin tissue, or multiple thin tissue sections, and disposes the sliced thin tissue on an appropriate substrate to facilitate subsequent imaging of the sliced thin tissue. Closed-loop control of section thickness of the sliced thin tissue sections or ribbons is implemented to produce thinner sliced tissue sections or ribbons and tightly regulate thickness. Thin tissue sections or ribbons may be particularly processed/prepared to facilitate imaging with a scanning electron microscope (SEM). Collected thin tissue sections or ribbons may be used to create UltraThin Section Libraries (UTSLs) that allow for fully automated, time-efficient imaging in the SEM to facilitate expansive tissue studies.

A food slicer for slicing a food product is provided. The slicer may have an adjustable surface and a stationary surface with a blade interposed therebetween. The food product may be sliced with a specific thickness via the blade by traversing the food product from the adjustable surface to the stationary surface. A trailing edge of the adjustable surface and an edge of the blade may define a gap distance which determines a slicing thickness of the food product. A cam may contact an underside of the adjustable surface to set the gap distance. The gap distance may be reset by rotating the cam. More particularly, the cam may have a plurality of cam surfaces. Each of the cam surfaces may have a different distance to a rotating axis of the cam. The gap distance may be changed by rotating the cam such that a different cam surface contacts the adjustable surface's underside.

A food slicer is disclosed having a frame with a track thereon, an adjustable pre-cut surface attached to the frame, a post-cut surface attached to the frame following the pre-cut surface, a blade disposed on the frame between the two surfaces, and a sliding mechanism movably secured within the track of the frame and engaged to support the adjustable pre-cut surface across the entire width of the surface, wherein sliding movement of the mechanism within the track raises and lowers the pre-cut surface relative to the blade. The track of the food slicer may include a plurality of detents for indexed movement of the sliding mechanism and the pre-cut surface may be made of a translucent or even transparent material to permit accurate placement of a catch bowl for the sliced food items.

A device for controlling the temperatures in a cooling chamber for a microtome, in particular an ultramicrotome, comprises at least two different temperature control circuits for controlling the temperatures of the specimen and of the cutter. The control circuit for the temperature of the specimen (8) and the control circuit for the temperature of the cutter (9), as well as, if appropriate, the control circuit for the temperature of the chamber gas, have a common setting element (17), such that the control circuit can be programmed to an identical temperature as the set value.

The invention relates to an automatic feeding pastry slicer and belongs to the technical field of food processing. The automatic feeding pastry slicer comprises a crank block slicing mechanism, a crank rocker feeding mechanism and a power device, wherein a slicer crank II and a slicer crank I are driven to rotate by a crank connecting shaft of the crank block slicing mechanism; a slicer is driven to vertically move for slicing by the slicer crank II and the slicer crank I through a slicer connecting rod; the crank rocker feeding mechanism comprises a feeding crank, a feeding connecting rod, a feeding rocker and a transmitting device; the feeding crank is driven to rotate by the crank connecting shaft; a crank rocker is composed of the feeding crank, the feeding connecting rod and the feeding rocker; one end of the feeding rocker is connected with friction wheels of the transmitting device and is used for driving the friction wheels to rotate through a friction force of a friction wheel wrench mounted on the feeding rocker; a conveying belt is driven to rotate by the two friction wheels. Through the matching of the crank block slicing mechanism and the crank rocker feeding mechanism, automatic feeding and quick efficient slicing are finished, and the working efficiency is increased.

Simultaneous slicing and washing of relatively firm raw vegetable or fruit products is accomplished in a vat of water into which a slicer apparatus is positioned such that the slices are formed and discharge directly into the water An inclined takeout conveyor serves to receive the slices and remove them from the water. A circulating water current and fluid jets urge the slices to disperse onto the conveyor. A spray of water or air blast removes residual vegetable matter from the slice surfaces before leaving the takeout conveyor for further processing. Slicing and washing a vegetable in a flume volute where the slices are dispersed onto a takeout conveyor is disclosed where the water medium is collected in a tub and recycled back to flow in the flume to a level that covers the slicer's operative parts. The apparatus may be used for simultaneous slicing and cooling of raw vegetables where hot cooling oil is maintained in the system and recycled for reheating.

An automatic ice cream scooper. A cylinder of ice cream is placed vertically within a refrigerated container on a slicer having a disc shape. The slicer includes an angled slicing blade for removing ice cream. The slicer is rotated by a motor to remove the ice cream. The slicer has an upstanding edge with the screw thread formed thereon for removing the sidewall of the ice cream container.