66 results about "Outer root sheath" patented technology

A stress cone for reducing electrical stresses is disclosed for use on terminated ends of tubing encapsulated power cable used in surface applications in a subsurface well power system employing electric submersible pumps (ESPs). The stress cone comprises an annular section about a longitudinal axis for receiving a terminated end of the TEPC in its first end and for abutting the terminated metal TEPC end against a metal shoulder at its second end therein, and an insulation chamber axially aligned with and connected to the annular section. The chamber comprises a metal interior surface symmetrical about the axis. The insulated TEPC core (without outer metal sheath) passes through the insulation chamber along the axis and then exits. The ID of the TEPC metal sheath and the inside metal surface of the chamber form a smooth ground plane transition surface. Insulation material surrounds the TEPC insulation layer within the insulation chamber.

A delivery device (suture passer or suture snare) that may be used in both open and endoscopic surgical procedures. The delivery device is designed with an internal member terminating in a snare and a retractable outer sheath (sleeve). The device is passed through tissue, and the outer sheath is retracted (moved back), allowing the snare to open. The suture is captured by the snare, and the outer sheath is then released so that it returns to its distal position, closing the snare and securing the captured suture. Since the snare is exposed by retracting the outer sheath (sleeve), rather than advancing the snare, the space requirement for the device is reduced, as is the possibility that the snare will undesirably contact sensitive tissue.

An artificial insemination (AI) device for the insemination of bovines and other animals including three hollow and essentially cylindrical tubular elements. Each element is provided with an open proximal and an open distal end, the three elements being: an outer protective sheath, an inner sheath, and a semen tube, whereby the diameter of the elements is such that the inner sheath is axially movable in the outer protective sheath and the semen tube is axially movable in the inner sheath, whereby the length of the outer sheath is less than the length of the inner sheath and whereby the inner sheath and the semen tube are jointly axially displaceable in and through the outer sheath. An outer sheath, an inner sheath and a semen tube for use in an AI device and a method for the insemination of bovines and other animals, includes the steps of inserting through the cervix and into the uterine horn, a closed tubular element to a point near the major curve of the horn, opening the tubular element by protrusion of an inner tubular element and manually guiding it into the curve of the horn and positioning the distal end of the inner tubular element near the ovary, and further providing semen nearby the UTJ through an internal semen channel.

A vein vessel stent and a delivery device thereof. The vein vessel stent is composed of a tubular proximal section, a middle section and a distal section connected in sequence. The proximal section and the distal section are made of a biocompatible metal supported pipe material. And the middle section is a helical structure formed by Z-shaped corrugated metal wires. And two ends of the helical structure are respectively connected with the proximal section and the distal section and are made of the same material. The conveyor comprises an outer sheath, a conveyor sheath, an inner sheath and a positioning guide wire, wherein a developing point is arranged at the top of the positioning guide wire. The stent has the advantages that different segmented structures have different flexibility. Andthe structure can conform to various forms of blood vessels and achieve better adhesion performance.

The application describes a method of generating a hair follicle, comprising administering a composition comprising epidermal matrix cells, dermal papilla cells, dermal sheath cells and outer root sheath cells to the scalp of a mammal. The composition may optionally be administered with a hair growth agent and/or a carrier. The application also describes a composition comprising epidermal matrix cells, dermal papilla cells, dermal sheath cells and outer root sheath cells and the use of the composition to generate hair follicles.

The invention discloses a ureteral stent device which comprises an ureteral stent tube and an urethral catheter, wherein a pull line of the ureteral stent tube comprises a magnetic adsorption section and an elastic section for ensuring the length of the pull line to be less than the length from the tail part of a stent tube body to an urethral orifice of a patient after the ureteral stent tube is implanted into the body of the patient when the elastic section in a freely expanded state; the elastic section is an elastic silk thread; the elastic section is arranged between the stent tube body and the magnetic adsorption section; the magnetic adsorption section is a silk thread with interrupted iron cores; the urethral catheter comprises an outer sheath and an inner core; the inner core is sleeved in the outer sheath in a slideable mode; the inner surface of the head part of the outer sheath and the outer surface of the inner core are surrounded into a pull line fixing cavity; and a magnetic part is arranged at the position of the inner core, close to the head part of the inner core. Compared with the existing pull line, in the using process of the ureteral stent device provided by the invention, the pull line is totally retained in the body of the patient and cannot be stained by outside dirts, so that the patient cannot be infected by pollution to the pull line and the patient also cannot feel uncomfortable due to a thread end exposed out of the body of the patient.

The method provides a gas-liquid interface three-dimensional culture method for skin and hair follicle regeneration. The method comprises the following steps: regenerating a hair follicle by culturing the outer root sheath of a vibrissa hair follicle, reestablishing the three-dimensional morphology of the hair follicle, simulating a body environment in a culture chamber, and culturing the outer root sheath of the hair follicle and embryo skin by utilizing the characteristics that the survival time of new hair follicles is relatively long, the neomorphosis is regular, and the hair follicles are not easy to collapse. Animal tissues (the hair follicles and fetal rat skin) are cultured on a gas-liquid interface by simulating the body environment, the cultured animal hair follicles and embryo skin have certain physiological functions, and the embryo skin can be healed without scars after being subjected to manual minimally invasive surgery; the gas-liquid interface three-dimensional culture method for skin and hair follicle regeneration is a method for culturing stem cells and rapidly establishing a medical regeneration model, and hair follicle regeneration and skin scarless healing mechanisms can be explored outside the body; the design is reasonable, the operation is simple, and an in vitro tissue regeneration and wound healing model can be easily established in short time.

The present invention relates to the treatment of skin defects by organotypically-cultured autologous keratinocytes isolated from the outer root sheath of anagen or growing hair. Methods for primary, as well as subsequent organotypic cultures (i.e., epidermal equivalents) in fully-defined media supplemented by autologous human serum and substances isolated form blood components, with minimal allogeneic biological supplements, are disclosed herein. Techniques to prepare epidermal equivalents for transplantation by use of a biocompatible glue are also disclosed herein.

The present invention proposes a photoelectric composite cable for aerostats with good mechanical properties and long service life. The positions in the cable are from the inside to the outside: the cable core, the non-metallic reinforcement, the middle sheath, the lightning protection layer and the outer sheath; the non-metallic reinforcement is made of insulating material; the middle sheath is made of insulating material; the lightning protection layer It is used to discharge lightning strike current, which adopts grid structure and is made of copper material; the middle sheath and the outer sheath are closely bonded together through the mesh of the lightning discharge layer. The cable core consists of a central piece, an optical fiber unit, a power conductor, a non-metallic inner reinforcement and an inner sheath from the inside to the outside; the fiber optic unit and the power conductor layer are twisted around the center piece. The invention can be applied to supply power and provide communication channels for aerostats such as tethered balloons and airships, and can also be applied to other occasions such as ship towing systems.

The invention discloses a bicolor double-colorful strip optical cable and an extruder mold thereof, and relates to the field of manufacturing of optical cables. The problems that colorful strips of the same color on the left and right sides are not enough to distinguish all optical cables, and different colors need to be added on the same colorful strip to distinguish more optical cables are solved. The bicolor double-color strip optical cable is characterized by comprising a cable core and an outer sheath arranged on the cable core, several colorful strips are arranged on the outer wall of the outer sheath and embedded in the outer sheath, and each colorful strip is composed of two color strips of different colors; double-color colorful strips sleeve the outer sheath and are beneficial for cable recognition.

The invention belongs to the technical field of cell secretion extraction, and discloses a method for extracting exosome derived from human hair follicle dermal papilla cells (DPC-Exos). The method isas below: identifying DPC-Exos by controlled resistance pulse sensing (TRPS) analysis, electron microscopy and Western Blot; and adding the DPC-Exos to a culture medium of human hair follicle outer root sheath cells (ORSCs) cultured in vitro. The DPC-Exos are identified to be about 105 nm in diameter and expressing tumor susceptibility gene (TSG) 101, differentiation cluster (CD) 9 and CD63; DPC-Exos promote proliferation and migration of human ORSCs, and mRNA and protein levels of beta-catenin and Sonichedgehog (Shh) in ORSCs are detected to be up-regulated after treatment; transdermal injection of DPC-Exos accelerates an HF growth phase of mice and delays the occurrence of regression. Immunohistochemical analysis shows that the expression levels of beta-catenin and Shh are up-regulatedin the hair follicles of an experimental group. DPC-Exos help regulate the growth and growth cycle of the HF and provide a new potential for the treatment of clinical hair loss.

The invention relates to medical devices and, particularly, catheter medical devices. In an aspect is a nerve block catheter system comprising a dual-sheath catheter comprising an inner sheath and an outer sheath, wherein distal ends of the sheaths are connected, the inner sheath defines a fluid delivery lumen, and the outer sheath comprises a tissue lock movable between a collapsed position and an extended position, wherein the tissue lock forms a reversible tissue anchor when in the extended position, and an actuator connected to the proximate end of the catheter and configured to activate the tissue lock by sliding the outer sheath length-wise relative to the inner sheath.

The invention discloses an ablation antenna with an external pipeline. The ablation antenna comprises an ablation needle P1, an insulator medium P2, an ablation needle pipe P6, a handle P10, an outer sheath 1 and a fixing seat 3, wherein the outer sheath 1 consists of a side hole 11, a sheath pipe 12 and a first joint 13; the side hole 11 is a through hole in the front end of the sheath pipe 12; and the tail end of the sheath pipe 12 is fixed on the handle P10 by the fixing seat 3. The ablation needle pipe P6 penetrates through the sheath pipe 12 and an inner cavity of the first joint 13, and a cavity channel 6 is formed by a gap between the inner wall of the sheath pipe 12 and the outer wall of the ablation needle pipe P6 and is communicated with the first joint 13. The tail end of the sheath pipe 12 can be provided with a second joint 14, and the cavity channel 6 is communicated with the second joint 14. Both the first joint 13 and the second joint 14 can be blocked by using blocking caps. The ablation antenna disclosed by the invention has the advantages that due to the arrangement of the two joints, the work of medicine injection and tissue-fluid extraction can be finished after once needling.

There is provided a new use of a hydroxydihydrobovolide compound having effects on preventing hair loss and growing hairs. Since the hydroxydihydrobovolide compound has effects on increasing survival rates of human hair follicle dermal papilla cells and hair outer root sheath cells and also growing a length of hairs, the compound is of great value as a pharmaceutical composition or cosmetic composition for improving scalp or preventing hair loss. Further, since the hydroxydihydrobovolide compound is isolated and purified from Eucheuma cottonii that is red algae and does not induce cytotoxicity, it is stable in the body and thus can be used as a raw material for functional health food.

The invention discloses a visual amplatzer conveying and positioning apparatus for interventional therapy of congenital heart disease, comprising an outer sheath; one end of the outer sheath is in threaded connection to a first screw cap, an inner sheath is arranged in the outer sheath, one end of the inner sheath is in threaded connection to a second screw cap, one side of the outer sheath far away from the first screw cap is provided with a monitor, a telescopic rod is arranged between the monitor and the outer sheath, the monitor is connected with the outer sheath through the telescopic rod, the bottom end of the telescopic rod is provided with a rotating device, the rotating device comprises a rotating portion and a fixed portion, the rotating portion of the rotating device is connected to the telescopic rod, and the fixed portion of the rotating device is fixedly connected to the sidewall of the outer sheath. Outer sheath positioning is accurate, surgical risk is reduced, vascular injury is avoided, X-ray imaging is not required for the surgical process, no irradiation damage is caused to doctors and patients, and working efficiency is improved. The visual amplatzer conveying and positioning apparatus for interventional therapy of congenital heart disease is applicable as an opening combination for congenital heart disease.

The invention discloses a method for constructing an androgenetic alopecia cell model. The method comprises the following steps that hair follicle hair bulb parts of forehead parts of an androgenetic alopecia patient are taken, hair papilla of the hair follicle hair bulb parts is separated, and culturing is carried out; a carina region of an occipital part of the androgenetic alopecia patient is taken, outer root sheath cells of the carina region are separated, and culturing is carried out; 3D culture is carried out on the hair papilla cells obtained after culture treatment, so that the hair papilla cells are gathered to form hair papilla cell balls; and the hair papilla cell balls are inoculated into an upper chamber of a transwell culture dish, the outer root sheath cells are inoculated into a lower chamber of the pre-coated transwell culture dish, and dihydrotestosterone is added to obtain the androgenetic alopecia cell model. The androgenetic alopecia cell model is relatively stable, the number of the outer root sheath cells is reduced after successful modeling, the change trend of androgenetic alopecia related markers is consistent with that in vivo, and the androgenetic alopecia cell model has a relatively high reference value for testing androgenetic alopecia drugs or treatment means.

The invention discloses a waveguide leaky cable used for 5G communication. The waveguide leaky cable comprises a conductor and an outer sheath, wherein the outer sheath is arranged on the outer layerof the conductor; a slotted hole marker line is arranged outside the outer sheath; the conductor is a welded or seamlessly embossed metal tube and is formed into an elliptical structure through a forming technology, and a leaky slotted hole used for wireless signal transmission is formed in the metal tube; the leaky slotted hole is formed in the opposite side of the slotted hole marker line; and different colors of colored tapes are added on the surface of a sheath on the side of a slotted hole according to requirements. According to the waveguide leaky cable disclosed by the invention, an inner conductor and a filing medium are removed, the transmission loss of electromagnetic waves is reduced, simultaneously, the effect of internal tension is considered, the cross sectional dimensions are changed, and structure bending also can cause the change of polarization direction of a dominant mode; the waveguide leaky cable product is of an elliptical forming technology, the product is deformed into an elliptic cylinder, the cross sectional area remains unchanged, the electromagnetic waves are split into even form and odd form and are of fixed polarization directions, and a transverse electric field, inside a cylinder, of the dominant mode is parallel to a minor axis of an ellipse, so that the loss is further reduced.

The invention relates to the technical field of cables and discloses a nonmetal self-supporting type optical cable which comprises a cable core, a protection layer, an outer sheath, a reinforcing partand a suspension wire protection layer, wherein the cable core is covered by the protection layer and the outer sheath, the reinforcing part is prepared from a fiber reinforced composite material, and the suspension wire protection layer is covered by the reinforcing part; a plurality of noctilucence marking strips with the different color from the suspension wire protection layer and a rib for connecting the suspension wire protection layer with the outer sheath are arranged on the suspension wire protection layer; the suspension wire protection layer, the outer sheath and the rib are prepared from a low-smoke zero-halogen material and integrally formed; the cable core comprises a central reinforcing part and a plurality of tightening sleeves, the central reinforcing part is arranged inthe center of the cable core, the plurality of tightening sleeves are arranged at the periphery of the central reinforcing part, an inner core is arranged in each tightening pipe, the inner core comprises at least one optical fiber, and water stopping gauze is arranged among the tightening sleeves and the central reinforcing part. By means of the structure, the nonmetal self-supporting type optical fiber disclosed by the invention has the advantages of simple and compact structure, light weight, convenience in recognition and maintenance and good compression resistance and tensile property; furthermore, interference of electromagnetic signals is eliminated; thus, the nonmetal self-supporting type optical fiber is suitable for multi-scene indoor and outdoor laying and has a wide applicationprospect.

The invention specifically discloses a hair follicle stem cell storage solution as well as a preparation method and application thereof. The storage solution comprises DMEM/F12, NaHC03, epidermal growth factors (EGF), insulin-like growth factors-I (IGF-I), hydrocortisone, fetal bovine serum (FBS), cephalosporin, adenine and basic-fibroblast growth factors. The hair follicle stem cell storage solution provided by the invention is capable of separating outer root sheath cells of hair follicles by utilizing an adherence method; when the hair follicle stem cell storage solution is used in a complete culture solution, single cells can be seen to grow outward from the edge of the outer root sheath of the hair follicles in 4 to 5 days, and a large number of cells can be obviously seen to grow from the edge of the outer root sheath after the culture is carried out for about one week; isolation culture and identification of epithelial-like morphological cells and hair follicle cells as well asin vitro remodeling of the hair follicles and fibroblastic morphological cells are mingled in the culture; with the increase of free growth cells, the growth rate is gradually increased, and the cellsenter a logarithmic growth phase on the 15th day or so.