45results about How to "Avoid excision" patented technology

The invention relates to a spine board dynamic stabilizing system, and belongs to the technical field of human body implanting objects of medical apparatuses. The spine board dynamic stabilizing system consists of an elastic structure and fixing plates, wherein the fixing plates are arranged at the two sides; the elastic structure is formed by connecting one or more than one U shape, a torsion fixing plate and an opening are respectively formed in two side plates of each U shape, and an anti-disengaging hook is arranged at the bottom part of the elastic structure; a semicircular screw hole and a fixing screw hole are formed in each fixing plate, a circular anti-disengaging screw hole is formed in each of the semicircular screw hole and the fixing screw hole, and an anti-disengaging hook is manufactured at the inside surface of each fixing plate. The spine board dynamic stabilizing system has the advantages that by utilizing the elastic structure, the dynamic stabilizing of extending, flexion and rotating of the spine operation section on the sagittal view is realized; the structure is simple, the stress is dispersed, the implanting is convenient, and the spine board dynamic stabilizing system can be applied to the diseases with overlarge lumbosacral angle, overshort spinous process or oversmall spinous distances. The spine board dynamic stabilizing system solves the problems of the existing dynamic spinous process inner fixator that the ligaments on the spinous parts need to be cut away or apart in the operation process, the cutting amount of spinous process bones is more, the diseases with overlarge lumbosacral angle, overshort spinous process or oversmall spinous distances cannot be treated, the installation and operation are complicated, and the injury in operator is large.

The invention provides combined probe type tumor thermal-therapeutic apparatus capable of accurately measuring and controlling temperature. The combined probe type tumor thermal-therapeutic apparatus mainly adopts a reverse temperature control inactivation tumor therapeutic method which controls and determines the heating action in the tumor according to the induced temperature on the tumor margins. The apparatus has a function of performing selective thermal damage to biological tissues, so that by using the apparatus, any length of heating time for clinical treatment of tumors of any irregular shape can be obtained, and the probability that 100 percent of tumor tissues are completely inactivated for one time, but normal tissues around the tumors are not harmed, which is an important medical aim in clinical biomedicine, is realized.

An endoscope assembly is disclosed having a housing adapted to be manipulated by medical personnel, such as a surgeon. An elongated lens tube has one end secured to the housing while an elongated stage is removably secured to the housing so that the stage encompasses and is coaxial with the tube. The stage together with the lens tube are adapted for insertion into the cavity of a body. A lens assembly provided within the lens tube relays the optical image from the free end of the stage to the housing. A lens assembly within the housing, furthermore, varies the magnification of the image between macroscopic magnification and microscopic magnification in which tissue may be examined on a cellular level. For macroscopic magnification, white light is transmitted through the lens tube as well as reflected back from the target tissue through the lens tube and to the housing. For microscopic examination, laser radiation is utilized in lieu of the white light illumination. A line scanning confocal assembly contained within the housing enables microscopic examination of the target tissue at varying levels into the tissue from the end of the stage.

The invention relates to an adjustable-bending tissue removal instrument for medical use. The tissue removal instrument comprises a tissue removal head, an adjustable-bending unit, a rotating shaft and an adjusting and control straight pipe, wherein the adjustable-bending unit comprises a linear section and a fixed bending part which is made from an elastic material; the linear section is fixedly connected to an adjusting and control handle; the far end of the rotating shaft is connected to the tissue removal head and the near end is provided with a connecting piece; the part of the rotating shaft, located on the fixed bending part, is composed of multiple sections of flexible shafts, and every adjacent two sections of the flexible shafts are connected by virtue of a stress releaser; each of the stress releasers comprises a plurality of connecting units, and the connecting units at two ends of the stress releaser are connected to nearby flexible shafts; movable connection, which is capable of achieving axis transmission rotating motion along the connecting units, is arranged between the adjacent two connecting units; the adjusting and control straight pipe is sleeved outside the adjustable-bending unit; and by operating the adjusting and control handle, the adjusting and control straight pipe is controlled to move in an axial direction. The rotating shaft of the invention is capable of transmitting torque by virtue of the plurality of the stress releasers, so that the alternating stress from bending is eliminated, fatigue breakage in the flexible shafts is avoided and the reliability of the instrument is improved.

The invention relates to improved recombination systems and methods for eliminating maker sequences from the genome of plants. Particularly the invention is based on use of an expression cassette comprising the parsley ubiquitin promoter, and operably linked thereto a nucleic acid sequence coding for a sequence specific DNA-endonuclease.

The invention discloses a stable control system and a load shedding method thereof. The stable control system comprises a stable control master station, a stable control substation and a stable control execution station, wherein the stable control master station, the stable control substation and the stable control execution station are in communication connection with each other successively. Thestable control master station is used for carrying out fault judgment in a 500kV power grid, and distributing required load shedding quantity to the subordinate 220kV stable control substation. The stable control substation is used for carrying out fault judgment in a 220kV power grid, distributing required load shedding quantity to the subordinate 110kV stable control execution station, and executing load shedding through a monitoring background after receiving a load shedding command of the superior 220kV stable control substation. The method is achieved based on the stable control system.According to the invention, load shedding objects are refined and reliability of implementation of load shedding measures is ensured.

The embodiment of the invention provides a video-assisted thoracoscope locating and marking method, which comprises the following steps of: obtaining locating information which includes the locating information of lesion; determining a preoperative locating mode according to the locating information; locating the lesion according to the preoperative locating mode, and obtaining the locating information of the lesion; carrying out a real-time calibration by combining with ultrasonic technique during the operation to obtain marking information; and resecting the lesion according to the locatinginformation and marking information of the lesion. By the adoption of the video-assisted thoracoscope locating and marking method, different preoperative locating methods are provided, meanwhile, theultrasonic three-dimensional real-time calibration technique is adopted during the operation to obtain the locating information of the lesion and the marking information related to the lesion, so thatthe lesion is accurately located and a definite surgical excision edge is provided at the same time, thereby avoiding unnecessary excision of the lesion, and overcoming the problem that an existing locating and marking method cannot accurately locate and mark small lesions, which leads to large excision range.

The invention discloses a method for producing embossed grain yarns by using a bundling method, which comprises the following steps of: preparing tail drawing strips 3 from one or more cotton fibers with corresponding colors by cotton plucking, cotton blending, breaking and opening, coiling, cotton carding and drawing respectively, quantitatively controlling the tail drawing strips to between 35.0 to 40.0 grams per 10 meters, then drawing the tail drawing strips by a roving frame roller 4 to form roving 7, feeding auxiliary yarns 2 into the roving 7 to perform roving molding so as to produce embossed grain yarn roving 6, and finally producing the embossed grain yarns by directly using a spinning frame. The embossed grain yarns produced by the method have strong yarn levelness irregularity, particularly have more hairiness and prominent wrapping in embossed grain parts, and technically show a totally different spinning method compared with the traditional yarns; the woven fabric has delicate surface grains and unique style; and compared with the fabric woven by the traditional process, the fabric woven by the yarns spun by the novel method has extremely obvious surface style difference and is welcomed by the market.

The invention relates to an adjustable-bending tissue removal instrument for medical use. The tissue removal instrument comprises a tissue removal head, an adjustable-bending unit, a rotating shaft and an adjusting and control straight pipe, wherein the adjustable-bending unit comprises a linear section and a fixed bending part which is made from an elastic material; the linear section is fixedly connected to an adjusting and control handle; the far end of the rotating shaft is connected to the tissue removal head and the near end is provided with a connecting piece; the part of the rotating shaft, located on the fixed bending part, is composed of multiple sections of flexible shafts, and every adjacent two sections of the flexible shafts are connected by virtue of a stress releaser; each of the stress releasers comprises a plurality of connecting units, and the connecting units at two ends of the stress releaser are connected to nearby flexible shafts; movable connection, which is capable of achieving axis transmission rotating motion along the connecting units, is arranged between the adjacent two connecting units; the adjusting and control straight pipe is sleeved outside the adjustable-bending unit; and by operating the adjusting and control handle, the adjusting and control straight pipe is controlled to move in an axial direction. The rotating shaft of the invention is capable of transmitting torque by virtue of the plurality of the stress releasers, so that the alternating stress from bending is eliminated, fatigue breakage in the flexible shafts is avoided and the reliability of the instrument is improved.

The invention relates to the field of vegetables, in particular to a tomato processing device capable of detecting softness and separating seed columns. The technical problem of the present invention is to provide a tomato processing device capable of detecting softness and separating seed columns. The technical solution is: a tomato processing device that can detect the softness and separate the seed column, including a working shelf, an operation control panel, a feeding cabin, a conveying mechanism, a softness testing mechanism, a first storage cabin, and fruit pedicle separation. Mechanism, the second storage compartment, the seed column separation mechanism and the third storage compartment; the working shelf plate is connected with the operation control panel through the support seat. The present invention achieves the detection of the softness of the tomatoes, picks out the immature tomatoes with hard skins, and cuts the sunken fruit pedicles of the tomatoes in a V shape to avoid cutting off too much pulp, and ellipse the tomato seed column. Trail cut, efficient handling and fully separable effects.

The invention relates to a fault current controller of a DC power distribution network. The fault current controller comprises a filtering loop, a series converter loop and a parallel converter loop,wherein the filtering loop comprises an LCL filter, the series converter loop comprises a full-bridge circuit, and the parallel converter loop comprises a DC / DC circuit. Under a steady-state condition, the fault current controller can be used for compensating temporary rising and temporary reduction of a voltage of a circuit and pulse; and under a fault condition, the fault current controller canbe used for providing current-limiting inductance and a reverse voltage, voltage adjustment of the DC power distribution network is comprehensively achieved, various functions of fault current limiting and blocking is achieved, and the application efficiency of the fault current controller is improved.

The invention relates to a direct-current overvoltage suppressing method of a flexible direct-current power transmission system connected with a wind farm in the technical field of wind farm power transmission. When the voltage of a receiving-end alternating-current system drops, the alternating-current voltage frequency output by a sending-end converter station is increased according to acquired direct-current voltage and is tracked in real time by a doubly-fed wind turbine controller. The doubly-fed wind turbine controller adjusts the rotation speed of a doubly-fed wind turbine according to the relation between the alternating-current voltage frequency and the angular speed of the doubly-fed wind turbine so as to increase the kinetic energy of the wind turbine, reduce the output power of the wind farm and suppress the rise of the direct-current voltage. When the voltage of the receiving-end alternating-current system is restored to the rated value, the sending-end converter station controls the alternating-current voltage frequency to be restored to the rated value. According to the method of the invention, neither wind turbine switching nor communication between the converter station and the wind farm is needed, the system is more reliable, and adjustment is quicker.

The invention relates to an embedded device for controlling an internal urethral orifice of a prostate gland and a placement method for the embedded device. The embedded device comprises a metallic ring and an external remote controller, wherein the metallic ring is circular or quasi-circular, is made from a material with biocompatibility and is provided with the external remote controller so as to control a shape of the metallic ring to be stretched and contracted. The placement method for the embedded device comprises the steps: S1: a doctor places the metallic ring into a urinary tract region of the prostate gland visibly under a synchronous endoscope; S2: the doctor incises a trace shallow flute mark at the urinary tract region of the prostate gland through circular incision and embedsthe metallic ring into the shallow flute mark; S3: the placed region maintains a middle part of the gland and an own direction of the metallic ring; and S4: after a circular metallic ferrule is fixed, the external remote controller can be equipped, extruding towards two lateral lobes is carried out effectively to strut the internal urethral orifice when circular stretching is observed, two circular sides are effectively retracted as required when urination ends up, a ureteral orifice is restored and even in a closed state, and thus, urine is effectively controlled or an abnormal phenomenon ofreverse semen flow is effectively avoided.

The invention discloses a frequency coordination control method specific to send-out islands of multiple direct current circuits. When a system suffers from a single-pole or dual-pole direct current locking failure, emergency frequency control on an island power grid with severe faults is performed by adopting a direct current power improving instruction (RUNUP), a direct current frequency limiter (FLC) and control measures of performing primary frequency modulation on a generator speed regulator and performing steady control on power cutting in turns. The frequency coordination control method is applicable to a multi-loop direct current transmitting end system with a concentrated control main station.