39 results about "Biopsy lesion" patented technology

An aqueous suspension of titanium dioxide, polymethylmethacrylate and Vitamin E oil is used to mark a location wherein a skin biopsy has been taken to enable subsequent identification of the biopsy location under ultraviolet light. The location is advantageously treated with Vitamin E oil on a daily basis subsequently extend the fluorescing life of the applied titanium dioxide.

A skin biopsy system covers all aspects of the biopsy procedure from initial incision to final closure. The system includes a flexible closure consisting of 4 elongated rigid members interconnected by flexible hinges. The opening within the closure is initially diamond-shaped, approximating an ellipse, which is then deformed or pinched to a narrow linear opening when the wound is closed. Included with the system is a knife which interacts with the closure to yield a guided incision of constant depth. The path of the knife is guided by interference between the blade and the inside faces of the closure while the depth is limited by interference of the handle proximal the blade and the top faces of the closure.

The invention relates to a deep learning-based skin biopsy image pathological characteristic recognition method. The method includes the following steps that: a plurality of layers of stacked automatic encoders are utilized to re-express the characteristics of a biopsy image; a series of convolutional neural networks are utilized to perform convolution and sampling on the characteristics of the image layer by layer, so that an abstract characteristic expression of the original skin biopsy image can be obtained; the characteristics obtained by the plurality of layers of stacked automatic encoders and the characteristics obtained by the convolutional neural networks are spliced together; and the recognition of pathological characteristics is completed by a multi-channel neural network. According to the deep learning-based skin biopsy image pathological characteristic recognition method of the invention, abstract concept expression is extracted through a deep learning model, and therefore, the method has high adaptability to factors such as color difference, illumination and magnification factors, and therefore, the accuracy of a computer in the recognition of pathological characteristics of skin biopsy images can be greatly improved.

Artificial dermis (1) obtained from plasma with platelets (2) and human fibroblasts. The plasma with platelets (2) is obtained from the fractionating of total blood (4) from the patient (8) by light centrifugation, and the human fibroblasts (3) from a skin biopsy (5). Clotting is obtained by adding calcium. This artificial dermis (1) provides for the rapid growth of the keratinocytes (6) seeded on its surface to build an artificial skin (7) which can easily be transplanted. Large areas of artificial dermis (1) are obtained from a small skin biopsy (5) and minimal quantities of plasma with platelets (2), which being enriched with cytokines and platelet growth factors, strengthens the proliferation of the cells seeded, both inside and on the surface. The artificial skin (7) obtained can be used to treat major burn treatments, chronic skin ulcers, etc., or be used, by employing genetically altered cells, as a vehicle for gene therapy.

A spoon-shaped skin biopsy instrument is used in the removal of superficial skin samples and skin abnormalities for subsequent laboratory analysis. The spoon-shaped skin biopsy instrument is comprised of a pair of spoon-shaped cutting edges, which surround the desired skin sample, a crossed-members apparatus with finger loops, and a pivot point that connects the crossed members. This present invention maximizes surgical efficiency and handling and minimizes operation time.

An automated skin biopsy apparatus for taking a biopsy of a lesion on skin may include a suture applicator configured to controllably suture skin surrounding the lesion before the lesion is resected from the skin, a lesion resector configured to controllably resect the lesion from the skin, a user-operated control, and a controller. The controller may be configured, in response to actuation of the user-operated control by a user, to automatically cause the suture applicator to suture skin surrounding the lesion and the lesion resector to resect the lesion from the skin while the sutures from the suture applicator are in place. Related processes are disclosed.

Biosafety blade devices that aid in the manipulation and safety of either single-edged or double-edged razor blades are disclosed. The devices include finger guards that assist with holding and manipulating a razor blade. The device also includes various embodiments of blade guards that prevent accidental contact with the sharp edge of a razor blade, securely lock a blade preventing reuse, minimize recoil and flying projectiles, control the depth of a skin biopsy, reversibly fix blade curvature and allow for tissue to be measured and securely held to the blade or easily expelled into a specimen container. The components of the biosafety blade, i.e., the finger guards and blade guards, can be used separately or they can be combined to provide for maximum comfort, accuracy, versatility and safety.

The disclosure provides methods and compositions for the evaluation of neuropathic pain and neurotrophic or other activity of a drug or drug candidate. In the disclosed methods, expression of certain gene(s) in tissue extracts from skin biopsies serves as a proxy of a relevant endpoint.

An automated skin biopsy apparatus for taking a biopsy of a lesion on skin. The apparatus may include a lesion stabilizer configure to controllably stabilize the lesion while on the skin, a lesion resector configured to controllably resect the lesion from the skin, a user-operated control, and a controller. The controller may be configured to automatically cause, in response to actuation of the user-operated control by a user, the lesion stabilizer to stabilize the lesion while attached to the skin and the lesion resector to resect the lesion from the skin while the lesion is being stabilized by the lesion stabilizer. Related processes are also disclosed.

The invention discloses a skin biopsy trephine device which comprises a cylindrical trephine body with the two ends open. An annular cutter is arranged at the front end of the trephine body. A piston is arranged in the trephine body and connected with a push-pull rod. The free end of the push-pull rod extends out of a rear end opening of the trephine body and provided with a pushing handle. A cutting edge of the annular cutter is of a shuttle shape. Scale marks are arranged on the outer surface of the annular cutter in the length direction of the annular cutter. According to the skin biopsy trephine device, the cutting edge of the annular cutter is of the shuttle-shaped structure, compared with a circular cutting edge of an existing annular cutter, the shuttle-shaped cutting edge has the advantages that a wound surface is small, alignment suture is easy, healing is fast, and the phenomena of a dog ear and scars are not prone to generation; the scale marks are arranged on the outer surface of the annular cutter, the incision depth can be displayed and the material obtaining depth can be effectively controlled conveniently; in addition, the skin biopsy trephine device is made of metal except for the piston so that the device can be reused after being sterilized and disinfected and use cost can be reduced.

The invention provides a skin tissue pathological specimen collection tool, relates to a spring mode skin biopsy ring cutter, and belongs to the technical field of medical apparatus and instruments. The spring mode skin biopsy ring cutter comprises an outer sleeve, a middle sleeve, a depth regulating sleeve, a center slide bar, a reset cutting ferrule, a bayonet lock, a pressure spring, a reset spring, a ring cutter bit, an outer hoop, a release button and a depth dividing rule. The spring mode skin biopsy ring cutter is characterized in that the depth regulating sleeve is screwed onto the middle sleeve; the center slide bar penetrates into the middle sleeve; the reset cutting ferrule is glidingly arranged at the upper end of the center slide bar through the pressure spring and the reset spring; the outer sleeve is screwed onto the reset cutting ferrule; the ring cutter bit is screwed onto the lower end of the center slide bar; the outer hoop is fixedly arranged on the middle sleeve; the release button is arranged between the outer hoop and the middle sleeve. As a spring mode is adopted by the spring mode skin biopsy ring cutter, cutter feeding is finished instantly, and therefore, the operation time is greatly shortened, and the pain of a patient is reduced. The spring skin biopsy ring cutter is simple and convenient in operational process, and suitable for being clinically popularized and applied.

Skin-biopsy devices are provided that include a retractable coring assembly. Methods of acquiring a skin biopsy are provided that can include placing a lower portion of a skin-biopsy device proximate skin to be sampled, and extending at least a portion of a coring assembly from the device to acquire at least a portion of the skin to be sampled, and retracting the portion of the coring assembly to within the device, and discharging the portion of skin for analysis.

The invention provides a skin tissue pathological specimen collection tool, relates to a press-type skin biopsy ring cutter, and belongs to the technical field of medical apparatus and instruments. The press-type skin biopsy ring cutter comprises a press handle, a center slide bar, a reset spring, an outer sleeve, a middle sleeve, a cutter bit sheath and a ring cutter bit. The press-type skin biopsy ring cutter is characterized in that the outer sleeve and the cutter bit sheath are respectively screwed onto the middle sleeve; the press handle and the ring cutter head are respectively screwed onto the center slide bar; the center slide bar is arranged in the middle sleeve through the reset spring. According to the press-type skin biopsy ring cutter provided by the invention, the cylindrical stalloy ring cutter bit is adopted, and the outer wall of the middle sleeve is provided with a depth dividing rule, and thus, a sampled specimen has a regular edge, and is in the shape of a standard cylinder; moreover, depth is controllable, so that the sampling success rate is greatly improved. The press-type skin biopsy ring cutter provided by the invention is reasonable in structural design, capable of enhancing the operational stability, shortening the operation time, reducing the pain of patients, simple and convenient in operational process, and suitable for being clinically popularized and applied.

The use of an iontophoresis electrode assembly for delivery of a drug formulation is described. The drug formulation includes an anaesthetic and a vasoconstrictor. It is administered to a patient prior to a procedure to produce clinically acceptable depth and duration of dermal anaesthesia at the portion of skin to subject to a painful procedure or to reduce or eliminate pain. The procedure is one selected from the group consisting of venipuncture, IV cannulation, needle aspirations, body piercings, blood donations, electrolysis, tattoo removal, tattoo application, injections, dermabrasion, skin peeling, high velocity particle ablation, pace maker implantation, pace maker replacement, epidural puncture, lumbar puncture, regional nerve blocks, skin harvesting, small skin incisions, skin biopsies, circumcisions or excisions. The iontophoresis electrode assembly may also be used to reduce or temporarily eliminate neuropathic pain.

The invention provides a gathering tool of skin tissue pathological samples, in particular relates to a negative pressure skin biopsy trephine, and belongs to the technical field of medical instruments. The negative pressure skin biopsy trephine comprises a cylinder-shaped trephine body with two ends opened, and a ring-shaped ringing knife is arranged at the front end of the trephine body. The negative pressure skin biopsy trephine is characterized in that an annular rubber plug is arranged in the trephine body and is perpendicular to the inner wall of the trephine body; the front end of a metal pull rod is hinged with the rubber plug, and the rear end extends out of the rear end of the trephine body. The edges of the samples gathered by the ringing knife are tidy and are standard column-shaped, so that the phenomenon is avoided that since the samples are extruded by tweezers, the tissues are damaged, and the quality of samples is improved; the operation stability is increased due to a reasonable structural design; and meanwhile, the surgical time is shortened, the pain of a patient is reduced, and the operation process is simple, easy and convenient.

The subject of the present invention is to provide a detection method for latent viral infections by detecting a gene product related to latent infections without going through an invasive procedure involving pain and bleeding, caused by skin biopsy and blood collection. Further, the subject of the present invention is to provide a kit for examination using in the detection of latent viral infections described above. As crusts and scales in a lesion contain large amounts of virus-infected cells which are in a state of dry necrosis, the method collects crusts and / or scales for a test sample and detects a gene product related to latent infections which may be present in the test sample. The kit for examination comprises (1) antisense oligonucleotide for reverse transcription of a gene product related to latent viral infections, (2) a primer set for amplifying a gene product related to latent viral infections and (3) a primer set for amplifying a housekeeping gene.

Briefly stated, the present invention provides compositions and methods for treating or preventing joint injuries utilizing hair follicle derived Non-Bulbar Dermal Sheath (“NDBS”) cells. Within one aspect of the invention methods are provided for isolating NBDS cells, comprising the steps of: (a) preparing vital hair; (b) cleaving the hair prepared in step (a) to remove the hair follicle bulb; (c) isolating Non-Bulbar Dermal Sheath tissue; and (d) cultivating the isolated Non-Bulbar Dermal sheath tissue to produce NBDS cells. Within one embodiment of the invention the vital hair is obtained by full skin biopsy from the occipital scalp of a subject.

Artificial dermis (1) obtained from plasma with platelets (2) and human fibroblasts. The plasma with platelets (2) is obtained from the fractionating of total blood (4) from the patient (8) by light centrifugation, and the human fibroblasts (3) from a skin biopsy (5). Clotting is obtained by adding calcium.This artificial dermis (1) provides for the rapid growth of the keratinocytes (6) seeded on its surface to build an artificial skin (7) which can easily be transplanted. Large areas of artificial dermis (1) are obtained from a small skin biopsy (5) and minimal quantities of plasma with platelets (2), which being enriched with cytokines and platelet growth factors, strengthens the proliferation of the cells seeded, both inside and on the surface.The artificial skin (7) obtained can be used to treat major burn treatments, chronic skin ulcers, etc., or be used, by employing genetically altered cells, as a vehicle for gene therapy.

The invention relates to an automatic device for performing skin biopsies, comprising a casing (2) housing a rod (3) on the distal end (3a) of which there is a circular blade (4), and means for causing simultaneous rotation and longitudinal advancement of the rod (3) from a first retracted position wherein the blade (4) of the rod (3) does not project via the distal end (2a) of the casing (2), to a second extended position wherein the blade (4) of the rod (3) projects via the distal end (2a) of the casing, followed by simultaneous rotation and longitudinal retraction of said rod (3) from said second extended position to said first retracted position.

Cells are generated from skin biopsies for use in cell implantation by identifying a source of skin cells that have a surface concentration of at least one cell selected from the group consisting of keritinocytes and / or melanocytes; taking a sample of tissue from the surface area; mechanically disaggregating the tissue samples; collecting the disaggregated cells; washing the disaggregated cells; filtering the washed disaggregated cells; providing a cell suspension with filtered and washed keritinocytes and / or melanocytes; and suspending the cell suspension in a medium. In greater particularity, the method may comprise a) identifying a source of skin cells that have a surface concentration of at least 400 cells per square millimeter of surface area of at least one cell selected from the group consisting of keritinocytes and / or melanocytes; b) taking a sample of those skin cells and culturing them to enrich for cells selected from the group consisting of keritinocytes and melanocytes to form cultured cells for transplantation purposes c) concentrating the cells selected from the group consisting of keritinocytes and / or melanocytes from the cultured mass of cells; and d) differentiating the concentrated cells selected from the group consisting of keritinocytes an / or melanocytes.

The invention discloses a skin cancer classification method based on the optical intensity and gradient of an OCT imaging image, and the method comprises the steps: (1) collecting a skin cancer imagethrough an OCT device, and normalizing the intensity in the OCT image into [0, 1]; (2) performing noise reduction on the OCT image through noise reduction processing; (3) extracting optical intensitycharacteristic parameters; (4) calculating to obtain the discrete value of each parameter of the marked sample, and then obtaining the difference and ROC analysis of each characteristic parameter in the marked control group through a mathematical statistics method to obtain a boundary value; and (5) calculating to obtain the discrete value of each parameter of the unknown sample, comparing the discrete value with the boundary value in the step (4), and classifying the unknown sample according to the comparison result. According to the invention, normal skin tissues, melanoma and melanin nevuscan be quickly and accurately judged; discomfort and trauma brought to a patient by an invasive method of skin biopsy are avoided.

A skin biopsy device and a method of operating a skin biopsy device are disclosed. The skin biopsy device comprises a base member configured to be placed onto a skin surface; an cutting member configured to be received by the base member and to be movable relative to the base member in a direction substantially orthogonal to the skin surface; and an actuation member configured to drive the cutting member to travel a predetermined distance at a predetermined velocity in said direction.

The invention discloses a device and method for segmenting cervical image lesion regions based on classification prior, wherein the device includes: an image acquisition device for collecting cervical images processed by 3%-5% acetic acid solution; a processor including cervical An image preprocessing module and a processing module, the processing module including a segmentation network model composed of a U-shaped network based on a residual connection, an image level classifier and a pixel level classifier, for outputting and predicting the position of the lesion area on the cervical image; The memory is used for storing the parameters of the segmentation network model in the processor; the display device is used for displaying the predicted lesion area output by the processor. The present invention can provide doctors with high-accuracy biopsy lesion position candidate regions, and improve the detection rate of biopsy positives.

The invention provides a biopsy system. The biopsy system comprises a frame body, a first fixing sleeve, a second fixing sleeve, a height recognition mechanism, a lateral recognition mechanism, a surface recognition mechanism, a controller, a three-axis mechanical arm and an automatic biopsy needle. The first fixed sleeve and the second fixed sleeve are configured for the trunk to pass through. And the height identification mechanism is used for establishing a Z-axis reference of the trunk. And the lateral recognition mechanism is used for establishing a Y-axis reference of the trunk. The surface recognition mechanism is used for establishing an X-axis reference of the trunk. The controller is electrically connected with the height recognition mechanism, the lateral recognition mechanism and the surface recognition mechanism and used for establishing a three-axis coordinate system. The three-axis mechanical arm is arranged on the frame body, electrically connected with the controller and configured to be controlled by the controller and drive the execution end of the three-axis mechanical arm to move to a preset coordinate based on the three-axis coordinate system. According to the technical scheme, the biopsy damaged position can be effectively determined, the biopsy operation precision is improved, and the operation success rate can be improved.

The application discloses a skin biopsy sampling device and belongs to the technical field of medical devices, which comprises two adjustable-height mounting racks, spring telescopic rods are mounted on the two mounting racks, L-shaped fixing rods are fixed at one end of the spring telescopic rods, a positioning ring is fixed at the bottom ends of the two fixing rods, a sampling mechanism is arranged between the two fixing rods, a piston sampling cylinder is movably arranged on the sampling mechanism, a ring cutter is fixed at the bottom end of the piston sampling cylinder, and a scale is arranged on the side wall of the piston sampling cylinder; the application is simple to operate and high in precision, has a pre-cooling function, directly reduces the sensitivity of skin nerve endings by using low temperature, reduces the discomfort of a patient, can realize automatic replacement of gauze at the same time, uses brand-new gauze to contact the skin every time, completely avoids the risk of bacterial residue and cross infection, and is suitable for multiple sampling.

The invention relates to the field of diagnostic kits, in particular to application of an IGHV family molecule as a diagnostic marker in preparation of a diagnostic kit for psoriasis (PSO) and arthropathy type psoriasis (PsA), and the IGHV family molecule is selected from IGHV3-72, IGHV5-51, IGHG3, IGHV1-69, IGHV3-73 and / or IGHV3-9. Wherein the prediction efficiency of the IGHG3 is the highest, and the area under the curve (AUC) is 0.826 (95% CI: 0.693-0.959). IGHV family molecules are specifically expressed in psoriasis, the diagnosis specificity is high, and the cross reaction with other autoimmune diseases can be reduced; the invasive operation of skin biopsy can be avoided through nail sample detection; the kit is suitable for early screening of PSO, early diagnosis and prediction of PsA and dynamic monitoring of curative effect, and is widely applied.

Briefly stated, the present invention provides compositions and methods for treating or preventing joint injuries utilizing hair follicle derived Non-Bulbar Dermal Sheath (“NDBS”) cells. Within one aspect of the invention methods are provided for isolating NBDS cells, comprising the steps of: (a) preparing vital hair; (b) cleaving the hair prepared in step (a) to remove the hair follicle bulb; (c) isolating Non-Bulbar Dermal Sheath tissue; and (d) cultivating the isolated Non-Bulbar Dermal sheath tissue to produce NBDS cells. Within one embodiment of the invention the vital hair is obtained by full skin biopsy from the occipital scalp of a subject.

The invention discloses a skin tissue drilling device. The skin tissue drilling device comprises a handle and an annular drill bit which are connected with each other, and an observation hole is formed in the side wall of the annular drill bit, and formed in the axial direction of the annular drill bit; the observation hole is a kidney-shaped hole; a set of concave openings are formed in a blade of the annular drill bit along the circumference; the blade of the annular drill bit is in a circular truncated cone shape. When skin biopsy is conducted, through the observation hole, the biopsy depthcan be directly observed, and thus the sampling accuracy and reliability are improved; the annular drill bit is provided with the concave openings, so that the concave openings are in a sawtooth shape, the blade is in the circular truncated cone shape, and rotary drilling during skin biopsy is facilitated.

The utility model discloses a skin biopsy sampling tool, which relates to the technical field of medical treatment, and comprises a tool main body, two cutting plates fixedly connected to the lower end of the main body and symmetrically arranged, and sampling tweezers, the lower end of the main body is provided with a mounting groove, the upper end of the sampling tweezers is mounted in the mounting groove, and the lower end of the sampling tweezers extends out of the lower end of the main body. The extending end of the sampling tweezers and the two cutting plates are combined into an annular structure, a limiting column used for limiting the sampling tweezers is fixedly installed in the installation groove, the annular structure formed by the sampling tweezers and the cutting plates is rotatably inserted into the skin sampling position, the two sides of the sampling tweezers are pressed, the sampling tweezers clamp a skin sample, and then sampling tissue can be pulled out from the skin surface. According to the skin biopsy sampling tool, the combination of the punching sampler and the tweezers is completed, and the problems that when an existing skin biopsy sampling tool is used for sampling, the punching sampler and the tweezers need to be alternately used, the operation time is prolonged, and meanwhile the operation complexity is increased are solved.

The present invention relates to a method for identifying pathological characteristics of skin biopsy images based on deep learning, which uses a multi-layer stacked autoencoder to re-express the features of the biopsy images, and uses a series of convolutional neural networks to convolve the image features layer by layer and sampling to obtain an abstract feature expression of the original skin biopsy image; the features obtained by the multi-layer stacked autoencoder and the convolutional neural network are spliced, and finally a multi-channel neural network is used to complete the identification of pathological characteristics. The present invention extracts abstract concept expressions through a deep learning model, and has strong adaptability to factors such as image color difference, illumination, magnification, thereby greatly improving the accuracy of computer recognition of pathological characteristics of skin biopsy images.