24 results about "Meniscus" patented technology

The invention relates to a light and miniature big-target-surface low-light lens, and the lens comprises a front lens group A, a diaphragm B and a rear lens group C, wherein the front lens group A, the diaphragm B and the rear lens group C are sequentially arranged in an incident direction of an optical path. The front lens group A includes a positive meniscus lens A1, a negative meniscus lens A2,a biconcave lens A3 and a biconvex lens A4, wherein the positive meniscus lens A1, the negative meniscus lens A2, the biconcave lens A3 and the biconvex lens A4 are sequentially arranged in an incident direction of the optical path. The biconcave lens A3 and the biconvex lens A4 are in close connection with each other as a first bonding group. The rear lens group C includes a biconcave lens C1, abiconvex lens C2, a biconvex lens C3, a plano-convex lens C4 and a negative meniscus lens C5, wherein the biconcave lens C1, the biconvex lens C2, the biconvex lens C3, the plano-convex lens C4 and the negative meniscus lens C5 are sequentially arranged in an incident direction of the optical path. The biconcave lens C1 and the biconvex lens C2 are in close connection with each other as a secondbonding group. The invention also relates to an imaging method of the lens. The lens is reasonable in design, effectively improves the imaging quality under the requirement of the large target surfaceof the lens, reduces the number of optical lenses, and realizes light and miniature lens. The lens has strong light collecting and light transmitting ability, and the target surface of the lens is large. The lens is high in optical resolution, is large in angle of view, and is large in observable range.

Various aspects of the present disclosure are directed toward methods and apparatuses for interacting a first liquid and a second liquid in one or more fluidic channels of a capillary structure. The methods and apparatuses can include providing at least one capillary barrier that positions a meniscus of the first liquid at a fluid-interface region using capillary forces within the capillary structure. Additionally, a path is provided along one of the channels for the second liquid to flow toward the fluid-interface region. Additionally, gas pressure is released, via a gas-outflow port, from the fluid-interface region while flow of the first liquid is arrested. Further, the first liquid and the second liquid contact in the fluid-interface region with the capillary barrier holding the first liquid at the fluid-interface region.

The invention relates to a targeting device that allows the drilling of precisely located tunnels for performing a two-tunnel technique for refixing a torn root of the posterior horn of the medial or lateral meniscus. The targeting device according to the invention comprises a supporting structure (1 ), an arm (2), a first guide (3) and a second guide (4), wherein the arm (2) is attached by its one end to the supporting structure (1 ) and at its other end the arm (2) comprises a hook (5) terminated by a tip (6), wherein the first guide (3) and the second guide (4) have a cylindrical shape and comprise a cavity passing through the given guide (3,4) along its entire length, wherein the supporting structure (1 ) comprises a first locking mechanism for locking the first guide (3) and a second locking mechanism for locking the second guide (4), wherein the longitudinal axis (7) of the first guide and the longitudinal axis (8) of the second guide belong to the same plane, are oriented centripetally, and their intersection lies in the given plane behind the tip (6) in the direction from the supporting structure (1 ).

1. Name of the product in this design: Artificial Meniscus (Implantable). 2. Purpose of this design: This design is intended for use in meniscus transplantation surgery for patients with meniscus injuries. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This application relates to the field of micro / nano-scale flow measurement technology, and discloses a liquid flow measurement method and apparatus based on capillary interface optical tracking. The method includes: determining edge point cloud data of the gas-liquid meniscus in a capillary during a target detection period; performing circular fitting and geometric parameter calculation based on the edge point cloud data to obtain contact data of the gas-liquid meniscus; wherein the contact data includes the contact angle and the contact position between the gas-liquid meniscus and the inner wall of the capillary; and performing flow correction processing based on the contact data to determine the corrected volumetric flow rate during the target detection period. Its beneficial effect is that by using circular fitting and geometric parameter calculation to generate contact data including the contact angle and contact position, the deformation state of the meniscus is quantified, effectively eliminating the volume measurement deviation caused by the meniscus cap deformation, and significantly improving the accuracy and reliability of liquid flow measurement under ultra-low flow and dynamic changing conditions.

The present application provides a liquid ejecting head and a liquid ejecting apparatus capable of detecting whether the pressure of a meniscus of a nozzle is within a normal range while suppressing an increase in cost and an increase in size. The apparatus includes: a plurality of nozzles that eject a liquid; a plurality of pressure chambers that apply pressure to the liquid for ejecting the liquid from the plurality of nozzles, respectively, the plurality of pressure chambers being arranged in the first direction; a first liquid chamber disposed in a first direction with respect to the first pressure chamber, the first pressure chamber being located at an end of the plurality of pressure chambers in the first direction; a first vibration plate defining a part of the first liquid chamber; and a manifold connected to the plurality of pressure chambers and the first liquid chamber in common, the liquid ejecting head having a strain gauge corresponding to the first diaphragm for acquiring the pressure in the first liquid chamber.

A microfluidic device includes a device body defining a microfluidic pathway including a first channel, a second channel downstream of the first channel, and a junction including a transition between the first channel and the second channel. The transition is configured to inhibit fluid entering the transition from the first channel from forming a meniscus across the second channel, thereby inhibiting capillary-driven flow into the second channel. The microfluidic device further includes a valve that, when activated while capillary-driven flow of the fluid is inhibited at the transition, induces capillary-driven flow through the second channel by facilitating formation of the meniscus.

A laboratory automation apparatus with a liquid volume measurement functionality comprising a working table, a pipettor comprising a pipetting head with an electrode providing a capacitive sensor with a reference electrode. A robotic arm is configured to move the pipetting head above the working table. A processor is operatively coupled to the robotic arm, to the pipettor and to the electrode by an electronic circuit. A capillary is located on the working table having an opening for receiving a target amount of liquid from the pipettor to form an air-liquid meniscus in the capillary. The robotic arm is configured to hover the electrode over the capillary to detect a change in capacitance related to the position of the meniscus, and the processor is configured to calculate the transferred amount of liquid from the position of the meniscus in the capillary.

A meniscus tear repair sling device has a collagen membrane having a first end portion and a second end portion. The first end portion is configured to pass under a tear in a meniscus and wrap over and above the tear and extend past the meniscus and overlay the second end portion thereby enveloping a portion of the meniscus with a tear and forming the sling device. The first end portion and the second end portion form exposed overlying tails extending external of a knee joint. The tails are configured to be affixed to a portion of a tibia. The tails when tensioned close the tear by providing a lateral strain on the torn meniscus when the tails are affixed to a tibia adjacent the knee joint.

A system includes an optical sensor having a field of view, and a container configured to hold a fluid. The container is substantially transparent, and is positioned within the field of view of the optical sensor. The system also includes a backdrop positioned within the field of view of the optical sensor on an opposite side of the container relative to the optical sensor such that the optical sensor is configured to acquire an image of the container and at least a portion of the backdrop. The backdrop includes at least one first stripe extending vertically along the backdrop and having a first degree of reflectivity, and at least one second stripe extending vertically along the backdrop and having a second degree of reflectivity substantially different from the first degree of reflectivity.

1. Name of the product in this design: Meniscus Sealing Device. 2. Application of this design: This design is used for suturing, repairing, and fixing the meniscus in medical surgery. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

A pressure measuring apparatus (10) comprising: a microfluidic chip (20) comprising at least one capillary measurement chamber and a fluid inlet fluidically coupled to the measurement chamber, wherein the measurement chamber and the fluid inlet are configured to permit a stable meniscus between a first fluid and a second fluid to be formed in the measurement chamber when supplying the second fluid via the fluid inlet to the measurement chamber; and a sensing system (90) configured to detect a position and a shape of the meniscus and to determine a pressure in the second fluid based on the position and the shape of the meniscus.

Various aspects of the present disclosure are directed toward methods and apparatuses for interacting a first liquid and a second liquid in one or more fluidic channels of a capillary structure. The methods and apparatuses can include providing at least one capillary barrier that positions a meniscus of the first liquid at a fluid-interface region using capillary forces within the capillary structure. Additionally, a path is provided along one of the channels for the second liquid to flow toward the fluid-interface region. Additionally, gas pressure is released, via a gas-outflow port, from the fluid-interface region while flow of the first liquid is arrested. Further, the first liquid and the second liquid contact in the fluid-interface region with the capillary barrier holding the first liquid at the fluid-interface region.

The invention discloses an artificial meniscus preparation device and method, and relates to the technical field of medical device.The artificial meniscus preparation device comprises a culture medium supply device, a power conveying device, a backflow device and a forming device.The forming device comprises a base, a gland, an elastic sealing gasket and a locking adjusting mechanism; a liquid inlet mechanism and a liquid outlet mechanism are arranged on the base, one end of the liquid inlet mechanism is communicated with the area, corresponding to the outer side of the meniscus, of the lower die cavity, the other end of the liquid inlet mechanism is connected with a culture medium supply device through a power conveying device, and one end of the liquid outlet mechanism is communicated with the area, corresponding to the inner side of the meniscus, of the lower die cavity. And the other end of the liquid outlet mechanism is connected with the culture medium supply device through the reflux device, so that perfusion culture and simulation of anatomical structures of a red region and a white region of a meniscus are realized. According to the preparation device and the preparation method, integral forming of the large-size artificial meniscus with enough mechanical strength can be achieved, biological materials do not need to be mixed, and material degradation and toxicity to cells in the using process are avoided.

A corner flow accelerometer device for reduced gravity applications comprises a capillary tube, wherein the capillary tube is partially filled with a capillary fluid, and wherein the capillary tube includes at least one corner configured to enhance capillary flow. A corner flow accelerometer device for reduced gravity applications comprises a hollow square prism comprising a capillary tube, wherein the square prism is partially filled with a capillary fluid comprising silicone oil, and wherein the square prism is anchored to a weight inside a gyroscope body. A gravity monitoring method comprises providing the corner flow accelerometer device as describe above, measuring a fluid height or meniscus curvature due to capillary flow, calculating a dimensionless Bond number based on the measured fluid height or meniscus curvature, wherein the dimensionless Bond number comprises a ratio between gravitational and surface forces, and calculating a gravitational force based the Bond number.

Techniques and mechanisms for a reconstituted circuit device to be formed using a flow of material, by capillary action, in a region between a first die and a second die. In an embodiment, a rigid mass extends around, and between, the first die and the second die. The rigid mass comprises a first body of a first material, and a second body of second material, wherein the bodies each extend across the region to respective sidewall structures of the first and second dies. In the region, a portion of the first body forms a surface structure which adjoins the second body. A concave or convex shape of the surface structure is an artefact of a meniscus formed by the first material during a liquid state thereof. In another embodiment, the reconstituted circuit device further comprises an interconnect which adjoins, and extends through, the rigid mass.

1. Name of the product in this design: Meniscus Sealing Device. 2. Application of this design: This design is used for suturing, repairing, and fixing the meniscus in medical surgery. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to a method for in vitro separation of molecules and / or molecular complexes having a gyration radius of less than or equal to 2 pm from a complex fluid, said method comprising the steps of: a) contacting a complex fluid with a structured capture array having topographical features in the form of a plurality of planar surfaces located between cavities, wherein the structured capture array is surrounded by humid air; b) covering the deposited complex fluid with a covering device such that the complex fluid is surrounded by a meniscus ring comprising a back meniscus and a front meniscus, wherein the surface tension of the complex fluid located between the covering device and the structured capture array defines at least the front meniscus and the back meniscus; c) dragging the covering device or the structured capture array in one direction at a speed of at most 2 mm.s' ‑1 The front meniscus and the back meniscus are displaced on and along the topographical features of said structured capture array towards said direction, wherein during the displacement of the complex fluid, the front meniscus covers exposed topographical features and the back meniscus exposes covered topographical features, resulting in: the molecules and / or the molecular complexes being trapped inside the cavities.

This application discloses a complete internal meniscus suturing system. The system includes an operating body, a puncture assembly, and an adjustment assembly. The puncture assembly includes an inner tube, an outer tube, and a puncture needle. The first end of the inner tube is fixedly connected to the operating body, and the second end extends away from the operating body. The puncture needle is fixedly disposed at the second end of the inner tube. The outer tube is sleeved around the outer periphery of the inner tube, with the end of the outer tube away from the operating body fixed to the second end of the inner tube. Both the inner and outer tubes have deformable portions. The adjustment assembly is connected between the operating body and the outer tube and can move towards or away from the operating body, causing the puncture assembly to deform at the deformable portion, bending towards a first direction or towards a second direction opposite to the first direction. This complete internal meniscus suturing system allows for stepless adjustment of the bending angle of the puncture assembly without the aid of other structures, providing flexible and convenient operation.

A method and apparatus for a two-piece capsule configured to expel air and reduce bubbles within a composition. The invention features a capsule with a cap and body, where the cap includes an insert with a dome shape designed to compress against the meniscus of a fluid composition or powder. This compression minimizes trapped air and enhances the capsule's structural integrity and longevity. Additionally, the capsule may employ a sealing element to prevent leakage, ensuring a stable, bubble-free environment for the contents. The capsule's design allows for efficient filling and reduces oxygen exposure, thus preserving the quality of the encapsulated material. The invention can be used for both powder and liquid encapsulations, enhancing shelf life and stability by significantly reducing internal air and maximizing fill volume.

A laboratory automation device with a liquid volume measurement function includes a table, a pipettor including a pipetting head having an electrode that provides a reference electrode for a capacitive sensor. The robotic arm is configured to move the pipette head over the table. The processor is operatively coupled to the robotic arm, the pipettor, and the electrode by electronic circuitry. The capillary tube is located on a table having an opening for receiving a target amount of liquid from the pipettor to form a gas-liquid meniscus in the capillary tube. The robotic arm is configured to hover the electrode over the capillary to detect a change in capacitance associated with a position of the meniscus, and the processor is configured to calculate a transfer amount of the liquid based on the position of the meniscus in the capillary.