327results about How to "Precision release" patented technology

An introducer (1) adapted for the introduction of a self-expanding endovascular prosthesis (20) in a lumen of a patient. The introducer has attachment devices (10,30) to hold each end of the prosthesis so that each can be moved independently. An end ovascular prosthesis (20) is also claimed with stents at the proximal and distal ends being within the graft. The remainder of the stents are positioned on the outside of the graft body.

The present invention provides a ligating band dispenser that is mounted on the distal end of an endoscope. The ligator is configured to deliver multiple ligating bands to a plurality of internal sites in a patient. The ligating bands are carried on a tubular band carrier member that is retractable relative to the distal end of the endoscope in order to preserve visibility through the endoscope during navigation, then extendable to define a suction chamber for tissue aspiration during band delivery. A tubular band driver member is slidable over the band carrier member and engages bands individually to push them off the distal end of the band carrier and onto a selected treatment site. A single-hand operated control handle for selectively operating the extension of the band carrier and movement of the band driver to release a band is also provided and is slidably and removably mounted to the endoscope shaft.

A catheter device having a shaft that extends from a proximal end to a distal end to carry on its distal end a self-expanding implant for intraluminal advance on a guidewire and delivery of the implant to an implant site by proximal withdrawal of a longitudinal sheath that lies radially outside the implant in the catheter, the catheter including a first shaft element to pull the sheath proximally and a second shaft element to push the implant distally to prevent the implant moving proximally with the sheath when the sheath is pulled proximally, wherein the sheath is freely rotatable with respect to the first shaft element during the said intraluminal advance and, during proximal movement, is caused to abut the first shaft element at an abutment position by a reduced inner diameter portion of the sheath proximal of the abutment position.

A device and method for minimally invasive tendon sheath release is presented herein. The device and method enables a surgeon to cut (“open”) a pulley that is obstructing a nodule and keeping a tendon from sliding smoothly. A guide probe of the device is inserted through a small incision and is used to find the edge of the pulley. Once found, the probe is guided to an end of the pulley. After proper position is assured, a hemi-cannula is moved over the guide probe to isolate the pulley from the surrounding tissue. A cutting blade is then used to sever the pulley. A dilation device may be inserted prior to the insertion of the ball tipped guide probe to dilate the area.

The invention relates to a vascular recanalization system for cardiovascular stenosis lesions. The vascular recanalization system comprises a balloon, an energy generation controller and a catheter. The catheter comprises a main body tube, one end of the catheter is connected with the energy generation controller, and the main body tube at the other end of the catheter is connected with one end ofthe balloon; wherein the balloon mainly comprises a balloon main body, an inner tube and an electrode pair, and the inner tube is arranged in the balloon main body; and the energy generation controller can send out and regulate a vibration signal with a specific frequency to enable the electrode pair to generate a vibration wave. The system further has a drug delivery function, can inhibit increase of endovascular membranes after recanalization and avoid restenosis after recanalization, thereby achieving the function of long-term treatment of stenotic lesions. For many vascular diseases needing to be implanted with stents, the purpose of achieving long-term patency rate without stent implantation is achieved, and therefore real intervention implantation-free is achieved.

A catheter device having a shaft that extends from a proximal end to a distal end to carry on its distal end a self-expanding implant for intraluminal advance on a guidewire and delivery of the implant to an implant site by proximal withdrawal of CD a sheath that lies radially outside the implant in the catheter, the catheter including a first shaft element to pull the sheath proximally and a second shaft element to push the implant distally to prevent the implant moving proximally with the sheath when the sheath is pulled proximally, wherein the second shaft element comprises a pusher-guider tube having a wall thickness with a plurality of discrete slits, the slits extending through the wall thickness of the pusher-guider tube.

Present invention relates to a head garment that covers scalp that allows user to pull portions of hair through stretch holes comprised within the body of the garment. In doing so, user is able to achieve the effects of a “ponytail(s)” that project from the head through the holes within garment. Another option present invention offers the user is the ability to pull hair through a top hole comprised within garment.

The invention discloses a conveying device of a covered stent. The conveying device of the covered stent comprises a guiding head which is provided with a hollow cavity in the axial direction, a guiding wire pipe which is communicated with the hollow cavity, a protective sleeve, an external pipe and a fixing device, wherein one end of the guiding wire pipe is fixedly connected with the rear end of the guiding head; the protective sleeve is sleeved outside the external wall of the guiding wire pipe and is capable of moving along the axial direction of the guiding wire pipe; one end of the protective sleeve is connected with the rear end of the guiding head; the external pipe is sleeved outside the external wall of the guiding wire pipe and is capable of sliding along the axial direction of the guiding wire pipe; the external pipe is sleeved outside at least partial of the external wall of the protective sleeve; and the fixing device is sleeved outside the external wall of the guiding wire pipe and is capable of moving along the axial direction of the guiding wire pipe. The conveying device of the covered stent is characterized in that a groove is formed on the external wall of the fixing device; a portion of the groove, which corresponds to the covered stent, is inserted into the fixing device and the front end of the insertion portion and the rear end of the insertion portion abut against the wall of the groove; space for accommodating the inserted potion is formed between the protective sleeve and the guiding wire pipe; and a position on the fixing device, which is provided with the groove, is arranged in the protective sleeve. The conveying device of the covered stent is applicable to conveying the covered stent into a body and performing releasing during an operation.

A device and method for minimally invasive tendon sheath release. The device and method that enables a surgeon to cut (“open”) a pulley that is obstructing a nodule and keeping a tendon from sliding smoothly. A ball tipped guide probe goes through a small incision and is used to find the edge of the pulley. Once found, the probe is guided to an end of the pulley. After proper position is assured, a cutting blade is deployed by pushing and holding a blade deployment switch. This deploys the sharp end of a retractable cutting shaft beyond the sheath. The entire device is then pushed or pulled using the device handle along the pulley until the pulley is completely released or where resistance is no longer felt. In an alternate embodiment, the cutting blade is static.

The invention provides a power adjustment method and a base station of an orthogonal frequency division multiplexing (OFDM) system. The method comprises the following steps of: acquiring downlink channel quality information by the base station, and acquiring the grade of a modulation coding scheme according to the downlink channel quality information; acquiring downlink transmission quality information by the base station, and acquiring current power redundancy according to the downlink transmission quality information; and adjusting current power by the base station in accordance with a preset power adjustment quantity according to the current power redundancy and/or adjusting the grade of the modulation coding scheme according to a preset modulation coding scheme grade. The invention effectively solves the problem of power adjustment of downlink interference of the OFDM system and can sufficiently release the power redundancy and sufficiently perform the throughput capacity of a cell.

The pinching fingers implement of the present invention provides independent grasping claws that can be independently opened or closed, and also independently rolled forward and backward, to provide for the secure and versatile grasping, manipulation and transport of irregular items. An attachment bracket may extend between two pairs of pinching fingers to allow connection of a secondary implement between the pinching fingers. The attachment bracket and the secondary implements may be structured such that the secondary implement may be attached without tools by rotating the pinching fingers forward, scooping up the implement, rotating the fingers backwards and securing the secondary implement with rotatable stands.

The invention relates to a heart valve implantation device provided with an anchoring device. The device comprises a heart valve prosthesis, at least two sets of anchoring pins and an anchoring pin releasing device, wherein an anti-disengagement end is arranged at the near end of each anchoring pin, the anchoring pin releasing device is detachably connected with the heart valve prosthesis and comprises a delivery pipe and a push rod, the far end of the anchoring pin releasing device is in a preset shape to enable the far end of the delivery pipe to be bent integrally or partially, the part, capable of being bent, of the delivery pipe is the bent section, a rigid section is arranged at the farthest end of the delivery pipe, the distance between the farthest end of the delivery pipe and the nearest end of the bent section of the delivery pipe is larger than or equal to one sixth of the perimeter of a circle formed by means of the minimum radius of the autologous valve tissue ring of a patient, the anchoring pins are pre-arranged in the far end of the delivery pipe and located at the far end of the push rod, and the anchoring pins can be made to move towards the far end of the delivery pipe by pushing the push rod to enable the heart valve prosthesis to be fixed between the autologous tissue and the anti-disengagement end. By the adoption of the device, accurate positioning and firm anchoring can be realized.

Formulations have been developed to improve the solubility of corticosteroids such as fluticasone proprionate in a composition designed to achieve localized release of the drug in the small intestine and/or colon. In one embodiment, solid dispersions of fluticasone are prepared wherein the drug is blended with or coated onto a highly water soluble substrate such as nonpareil (sugar beads) then coated with a layer of polymer soluble in small intestinal fluid, then coated with an enteric coating. The inner polymer layer controls release of the drug, and the enteric coating, a pH sensitive polymer that is broken down in the ileum and colon, controls localized release of drug at various sites within the gastrointestinal tract. The multilayer pharmaceutical composition can be in the form of pellets, tablets compressed from pellets or pellets packed into capsules. The release profile of the drug can be manipulated by (1) altering size or shape (i.e., surface area) and solubility of the inert substrate; (2) the ratio of drug to polymer, the polymer composition and solubility, the porosity of the polymer; (3) the drug form (i.e., free base or salt, or which salt); and the thickness and/or surface area of the drug/polymer and/or enteric coating. In a preferred embodiment, the composition is administered orally. This may also be packaged to provide for an escalating or tapering dosage.

A double sacculus device used for a curve section blood saccule expansible support comprises a pipe fitting, sacculus arranged on the pipe fitting, a dispersion stress pipe arranged on the back of the pipe fitting and a connecting piece. The pipe fitting comprises an inner sleeve and an outer sleeve, which respectively form a guiding cavity, a first filling cavity and a second filling cavity; the saccule on the pipe fitting comprises a center saccule and an extension saccule; the saccule has a design of three folds and is closely parceled; the center saccule is positioned in the extension saccule by which the center saccule is parceled; the tops of both the center saccule and the extension saccule are connected with the inner sleeve, but connection points are at different location; the ends of the inner sleeve are connected with the outer sleeves respectively; the cavities of the inner sleeve is communicated with the first filling cavity and the second filling cavity respectively; in the dispersion stress pipe and the connection piece, a double-layer cavity that is inosculated with each cavity in the pipe fitting. The invention solves problems of the prior art and changes an operating process by which both ends of a saccule are expanded first, which makes the center part of the complete saccule expand firstly and get a good adherence, and then the two end parts begin to expand.

A data source has a data converting part for converting inputted data to predetermined data packets. A data buffer stores the data packets. A descriptor list stores a descriptor to which predetermined addresses are added, where a method of sending the data packets is described. A FIFO stores the predetermined addresses in a first-in first-out mode. A data sending part receives start instructions from the data converting part, refers to a predetermined address in which reference is not made yet in the FIFO, fetches data packets corresponding to the descriptor from the data buffer in accordance with a method of sending the descriptor indicated by the predetermined address, generates a send packet from the data packet and outputs the data packet. An end-of-send notice to the data converting part is also send when the output of the send packet is ended.

The invention discloses a message announcing system based on locating a user behavior and a method thereof. The invention is characterized in that the system comprises: a user behavior acquisition module for acquiring a user view behavior and building a user behavior matrix by analyzing a daily; a cluster counting engine module for clustering the user behavior matrix generated by the user behavior acquisition module to generate a user group behavior matrix with a clustering algorithm; a multicast group management module for distributing a message announcing multicast group to each user, receiving periodical query from a user terminal, and returning a message announcing multicast group address corresponding the user group to the user terminal; and a message announcing management module for remaining the feature user behavior matrix of a message announcing type, when announcing the message, counting the related coefficient between the message announcement and the user group, and distributing the message announcement to the user group with the related coefficient which is higher than a preset threshold value through a multicast information channel. The invention also discloses a message announcing method based on locating the user behavior.

The invention provides a nano catalyst for tumor treatment, and a preparation method and application thereof. The nano catalyst provided by the invention comprises an erythrocyte membrane, and a composite nano enzyme and a photosensitizer which are coated in the erythrocyte membrane, wherein the composite nano enzyme comprises glucose oxidase and iron nanoparticles which are coated in an inner cavity of the glucose oxidase. The nano catalyst is preferentially accumulated at a target tumor site through targeted biomimetic delivery, and release of the composite nano enzyme is realized under irradiation of near infrared light. Based on high glucose uptake and a weakly acidic environment at the tumor site, glucose oxidase converts glucose into H2O2, induces iron nano particles to start an in-situ Fenton reaction, generates hydroxyl free radicals after sequential catalysis, induces tumor cells to be subjected to oxidative damage, and further kills the tumor cells. The nano catalyst not onlycan realize high-efficiency loading of the catalyst, but also can effectively prolong in-vivo circulation time, so that accurate and sustained release on a tumor focus part is realized, and a new thought and platform are provided for tumor treatment.

A surface modifier comprising an organosilicone compound represented by General Formula (A) and/or General Formula (B): F—(CF₂)_q—(OC₃F₄)_m—(OC₂F₄)_n—(OCF₂)_o(CH₂)_pXX″Si(X′)_3-a(R¹)_a (A) and F—(CF₂)_q—(OC₃F₆)_m—(OC₂F₄)_n—(OCF₂)_o(CH₂)_pXX″(X′)_2-a(R¹)_aSiO(F—(CF₂)_q—(OC₃F₆)_m—(OC₂F₄)_n—(OCF₂)_o—(CH₂)_pXX″(X′)_1-a(R¹)_aSiO)_zF—(CF₂)_q—(OC₃F₆)_m—(OC₂F₄)_n—(OCF₂)_o(CH₂)_pXX″(X′)_2-a(R¹)_aSi(B) wherein q is an integer from 1 to 3; m, n, and o are independently integers from 0 to 200; p is 0, 1 or 2; X is oxygen or a bivalent organic spacer group: X″ is a bivalent organosilicone spacer group; X′ is hydrolysable group; and z is an integer from 0 to 10 when a is 0 or 1.

An adhesive film for rubber adhesive tips in which an adhesive coat is on the back surface of rubber or lambskin fabric, this surface is used for better gripping and/or releasing in athletic sports. It is used to increase the overall performance by 5 to 15%, while playing athletic sports. It surpasses the discomfort and dexterity of athletic gloves, giving the hand the freedom to breath as well as natural feeling of throwing or gripping. Sweat and moisture are major factors in why many balls are thrown inaccurately. Many athletes have small hands and cannot get a good grip on athletic balls. Some examples are as follows: Gives pitchers better gripping and control of pitches, more accurate release points Gives a football player better grip and more accurate release points Gives a basketball player better grip and better, more accurate release points