43 results about "Motile sperms" patented technology

An apparatus for separating and detecting motile spermatozoa in a liquid sample, comprises: a separation vessel including (i) an inlet port, (ii) an outlet port arranged to be opened, (iii) a separation medium into which motile spermatozoa in the sample can flow via the inlet port, and (iv) an actuator operable to open the outlet port for allowing the separation medium to flow out of the vessel through the outlet port; and a spermatozoa detection device including (i) an application zone in communication with the outlet port, (ii) a detection zone, in which presence of spermatozoa can be detected, and (iii) a reagent zone containing a reagent which is capable of reacting with spermatozoa to facilitate detection of the spermatozoa in the detection zone, with the application zone, the detection zone and the reagent zone being arranged to permit capillary flow of spermatozoa from the application zone to the detection zone.

Device (10, 110) for separating motile sperm from a sample (100, 200), comprises a vessel (15, 115) having an inlet port (20, 120), an outlet port (35, 135) which is initially closed, a medium (40, 140) into which motile sperm in the sample (100, 200) can migrate into the vessel (15, 115) via the inlet (20, 120), and an actuator (50, 150), the operation of which opens the outlet (35, 135), thereby allowing the medium (40, 140) to flow out of the vessel (15, 115) through the outlet (35, 135). The medium (40, 140) in the vessel (15, 115) is initially prevented from flowing through the outlet (35, 135), thus allowing an incubation period which allows motile sperm sufficient time to migrate from the sample (100, 200) into the medium (40, 140) before the medium (40, 140) leaves the vessel (35, 135). The device (10, 110) preferably comprises a spermatozoa detector in communication with the outlet. In devices for separating sperm, capillary flow takes place through non-fibrous material, such as the space between sheets (81a and 81b; 181a and 181b) of closely-juxtaposed material. A device for separating motile and non-motile sperm includes a temperature sensor, a heat source (70, 170) and, optionally, a temperature regulator.

A method for measuring the total sperm concentration (TSC) in a sample is described and includes: (i) placing the sample in a transparent container between a synchronically pulsed light source and a photodetector; and (ii) measuring the optical absorbance of the sample in the range of 800-1000 nm, the TSC of the sample being proportional to the absorbance. Also described is a sampling device for use in optically analyzing a biological fluid, a method for measuring motile sperm concentration (MSC) in a semen sample, a method of determining the average velocity (AV) of sperm cells and a system for analyzing semen quality including means for measuring TSC, means for measuring MSC; and a video visualization system.

Motile particles are sorted from non-motile particles in a microfluidic sorting device wherein a stream of sort fluid containing motile and non-motile particles is caused to flow adjacent a media stream in non-turbulent fashion through a sort channel, during which flow motile particles cross the interface between the adjacent flow streams, entering the media stream, and forming a motile particle-depleted sort stream. The sorting devices are easily and inexpensively fabricated and have numerous uses, in particular sorting of motile from non-motile sperm.

A novel sperm quality assessment device includes a main frame and a test pad. The test pad is encircled by the main frame and includes an exposed introductory portion. The test pad has greater hydrophilicity than the main frame, and includes an MTT reagent. Therefore, the activity pattern of the colored motile sperms can be used to estimate sperm quality, such as motility. The present device has the particular advantage of using paper to reduce manufacturing cost, and is also easy to use.

The present invention discloses method and apparatus for regulating optimum flow of semen and separating motile sperms. The device consists of; a first cylindrical shape container, comprising a first external diameter, second external diameter, a thirds external diameter and a mesh, wherein said mesh is comprised of plurality of pores and attached to lower bottom of said first cylindrical shape container; a second cylindrical shape container comprising an internal diameter and an external diameter, wherein said second cylindrical shape container is closed ended at bottom, and embraces said first cylindrical shape container at said second external diameter of said first cylindrical shape container, thereby creating at least a first predetermined distance and at least a second predetermined distance, wherein said at least a first predetermined distance regulates air coming from said second cylindrical shape container, thereby regulating flow of semen and separating motile sperms coming through said mesh to said second cylindrical shape container.

Device (10, 110) for separating motile sperm from a sample (100, 200), comprises a vessel (15, 115) having an inlet port (20, 120), an outlet port (35, 135) which is initially closed, a medium (40, 140) into which motile sperm in the sample (100, 200) can migrate into the vessel (15, 115) via the inlet (20, 120), and an actuator (50, 150), the operation of which opens the outlet (35, 135), thereby allowing the medium (40, 140) to flow out of the vessel (15, 115) through the outlet (35, 135). The medium (40, 140) in the vessel (15, 115) is initially prevented from flowing through the outlet (35, 135), thus allowing an incubation period which allows motile sperm sufficient time to migrate from the sample (100, 200) into the medium (40, 140) before the medium (40, 140) leaves the vessel (35, 135). The device (10, 110) preferably comprises a spermatozoa detector in communication with the outlet. In devices for separating sperm, capillary flow takes place through non-fibrous material, such as the space between sheets (81a and 81b; 181a and 181b) of closely-juxtaposed material. A device for separating motile and non-motile sperm includes a temperature sensor, a heat source (70, 170) and, optionally, a temperature regulator.

The invention relates to a raman spectrum-based fast measurement method for a motile sperm deoxyribonucleic acid (DNA). The invention adopts the following technical scheme: collecting a semen sample by a test tube; naturally liquefying semen in a room-temperature environment; absorbing the liquefied semen and adding to a centrifugal tube containing density gradient centrifugate; absorbing upper seminal plasma after centrifuging, discarding, then adding a PBS buffer solution and centrifugally washing again; absorbing supernatant, discarding, adding the PBS buffer solution to prepare a sperm suspension, and incubating; attaching a metal bottom plate to a culture dish; adding the PBS buffer solution, and absorbing the incubated sperm suspension, soaking in the culture dish, wherein the sperm swims outside and contacts the metal bottom plate; setting a spectrum response range, integrating time and the excitation light wavelength, so as to obtain raman spectrum data from the head part of the sperm. The motile sperm swimming out from the pointed-end part of a sucker can be attached to the metal bottom plate by operation of a thin tube pipette, and the damage condition of the sperm DNA is evaluated by measuring the sperm of which the head is attached to the metal bottom plate.

The invention relates to a preferential sperm freezing culture device which comprises freezing slide glass, a sperm tank, a sperm swimming channel, a collecting tank and a blocking piece. The volume of the sperm tank ranges from 50 microliters to 500 microliters, the volume of the collecting tank ranges from 5 microliters to 20 microliters, the width of the sperm swimming channel ranges from 10 micrometers to 30 micrometers, and the sperm swimming channel is connected with the sperm tank and the collecting tank. The preferential sperm freezing culture device has the advantages that the preferential sperm freezing culture device is applicable to screening preservation of frozen sperm, motile sperm can be automatically separated by the design of the sperm tank, the sperm swimming channel andthe collecting tank, operation amount is decreased, mechanical damage to the sperm caused by manual picking is avoided, the proportion of usable motile sperm is increased, the freezing slide glass ofall existing sperm can be completely replaced, the preferential sperm freezing culture device can be applied to the fields of normal sperm optimization sperm periodic IVF (in-vitro fertilization), ICSI (intracytoplasmic sperm injection) or artificial insemination, sperm collection of oligospermia and asthenospermia patients, surgical sperm extraction of azoospermatism patients, sperm collection and the like, and has a wide popularization and application prospect.

A microfluidic system employs a microchannel and a gravity driven pump comprising horizontally oriented fluid supply reservoirs which supplies fluid to the microchannel at a substantially constant rate. The device is useful for numerous microfluidic applications, for example in the culture and / or treatment of biological systems under constant flow-induced stress, cell-size sorting, motile sperm sorting, or embryo culture.

The present invention discloses a staining mixture including live sperm, a composition that modulates intracellular or extracellular oxidation / reduction reactions, and a DNA-selective dye. Cells contained in such suspensions are more tolerant of multiple steps typically associated with sorting sperm cells into sex-enriched cell populations, thereby increasing the number of viable or motile sperm in the sorted composition. The present invention also discloses a method of staining sperm cells, which includes forming a dye mixture.

The present invention relates to a system to analyse general diagnostic factors in cells and body fluids using a flow cytometer, and in particular to a system featuring a number of different fertility tests, in a simple, expedited format, in order to investigate factors affecting fertility, preferably in a semi or fully automated manner. Specifically, a preparative method has been developed to increase the success of in vitro fertilisation (I.V.F) and intrauterine insemination (I.U.I) in cases of immunoinfertility by removing sperm-bound antibodies from sperm cells. A special device has been designed to collect only motile sperm cells from semen samples. Thus, this invention provides improved methods for general diagnostic testing and infertility screening and enables gynecologists to obtain information from an infertile couple in a preliminary test, which until now has been time consuming and only possible to run in sophisticated laboratories.

Provided is a method for measuring the total sperm concentration (TSC) in a sample including: (i) placing the sample in a transparent container between a synchronically pulsed light source and a photodetector; and (ii) measuring the optical absorbance of the sample in the range of 800-1000 nm, the TSC of the sample being proportional to the absorbance. Further provided is a sampling device for use in optically analyzing a biological fluid, a method for measuring motile sperm concentration (MSC) in a semen sample, a method of determining the average velocity (AV) of sperm cells and a system for analyzing semen quality comprising means for measuring TSC, means for measuring MSC; and a video visualization system.

Sperm cell suspensions comprising a motility inhibitor are disclosed. The cells contained in such suspensions tend to have a greater capacity for enduring the various process steps typically associated with the sorting of sperm cells into gender enriched populations, thereby resulting in post-sort compositions with an increased number of viable or motile sperm. Processes for forming such cell suspensions, as well as processes for staining sperm cells, are also disclosed.

A microchip includes a first chamber and second chamber formed to a predetermined depth in a member made of polydimethylsiloxane (PDMS); and a channel (microchannel) connecting the first chamber to the second chamber. These components mimic in vivo organs which produce by selecting capacitated motile sperm from semen and causing the selected sperm to meet mature oocyte, and these components are capable of effectively producing motile capacitated good-quality sperms from sperms ejaculated outside the body.

A microchip includes a first chamber and second chamber formed to a predetermined depth in a member made of polydimethylsiloxane (PDMS); and a channel (microchannel) connecting the first chamber to the second chamber. These components mimic in vivo organs which produce by selecting capacitated motile sperm from semen and causing the selected sperm to meet mature oocyte, and these components are capable of effectively producing motile capacitated good-quality sperms from sperms ejaculated outside the body.

The invention relates to an automatic sperm floating apparatus. The apparatus comprises a liquid inlet tube, a liquid outlet tube and a tube body, the upper end of the tube body has a conical shape, the top of the conical tube body is connected with the liquid outlet tube, and the liquid outlet tube is communicated with the internal of the tube body; the liquid inlet tube is fixed to a sidewall of the tube body, the bottom of the liquid inlet tube is communicated with the bottom of the tube body, and the upper end of the liquid inlet tube is provided with a tube cover; and the materials of the liquid inlet tube, the liquid outlet tube and the tube body are a deformable nontoxic transparent plastic. The apparatus has the advantages of reasonable structure design, no need of extra suction tubes for the addition of a culture liquid and a semen and the suction of a culture liquid containing motile sperms, material consumption saving, convenient and controllable operation, furthest reduction of the culture liquid pollution possibility, and guarantee of the cleanliness and purity of the motile sperms obtained through a floating method.

Disclosed herein are methods of treating, preventing, or reducing the incidence of an inflammatory disease or disorder and methods of inhibiting, preventing, or reducing the incidence of one or more activities in a cell with an inhibitor of a Motile Sperm Domain containing Protein 2 (MOSPD2). Also disclosed are inhibitors of MOSPD2 and pharmaceutical compositions containing MOSPD2 inhibitors.

The invention discloses a method for rapidly separating a sperm head, a sperm tail and a normal motile sperm, and belongs to the technical field of reproductive medicine. The sperm, the sperm head andthe sperm tail are sorted by adopting a flow cytometry according to differences of cell lateral scattering light-area (SSC-A), forward scattering light-area (FSC-A), lateral scattering light-width (SSC-W) and lateral scattering light-height (SSC-H) in a sperm sample. By adopting the method disclosed by the invention, the sperm head, the sperm tail and the normal motile sperm can be quickly separated, purity is high, and the method is simple and convenient.

Hexahydroindenopyridine compounds are provided which act as spermicides and / or fungicides, spermicidal and / or fungicidal compositions containing the same, and methods for killing motile sperm and / or fungi using the compounds and compositions.

A method to measure total sperm concentration (TSC) in a semen sample comprises procedures below: (i) The semen sample is positioned in a transparent container between a synchronous impulse light source and a photodetector; (ii) Light absorbance of the semen sample in the range of 800 to 1,000mm is measured. TSC of the sample is directly proportional to the light absorbance. In addition, a sampling equipment to conduct optical analysis to biological body fluid, a method to measure motile sperm concentration (MSC), a method to confirm average speed (AV) of sperm cells and a system to detect semen quality. Wherein, the system is composed of a device to measure TSC, a device to measure MSC and a video visual examination system.

The present invention provides the methods and composition useful as a contraceptive by preventing motile sperm from reaching a mature ovum, thereby blocking fertilization and preventing pregnancy. The contraceptive is comprised of halogen functionalized fullerene nanoparticles (halo fullerenes) and chemotactic stimulants that act synergistically to divert, incapacitate and ultimately rupture spermatozoa to avert fertilization. When applied vaginally prior to coitus, the suspension is activated by exposure to spermatozoa upon insemination. Notably, non-spermatozoa cells are unaffected by the pH-neutral suspension; however, closer to the same scale, microbes are susceptible to its inherent biocidal properties. Following application and coitus, the contraceptive evacuates naturally, along with seminal and vaginal fluids thereafter.