14 results about "Doppler probe" patented technology

The invention discloses a femoral artery paracentesis post-operation pressure-controlled hemostasis device and a monitoring intelligent control system thereof, and relates to the technical field of medical apparatuses and instruments, and the femoral artery paracentesis post-operation pressure-controlled hemostasis device comprises an assembly panel; the air bags are arranged at the bottom of the assembly panel; the air pump is arranged at the top of the assembly panel and used for controlling the air bags to contract; the control piece is arranged at the top of the assembly panel and used for controlling the air pump; the Doppler probe is arranged at the bottom of the assembly panel and used for detecting the blood flow speed of the far end of a puncture point, the hemostasis safety and efficiency are remarkably improved through multi-mode intelligent control and a real-time feedback mechanism, the vein area is accurately recognized and avoided in combination with ultrasonic and infrared spectrum analysis of the artery positioning module, the thrombus forming probability is effectively reduced, and the blood flow speed of the far end of the puncture point is detected. The pressure-time optimization model dynamically shortens the compression time (target 3 hours) based on the real-time hemostatic effect, and improves the comfort of the patient while ensuring the hemostatic effect.

An apparatus and method for an articulating microsurgical instrument is disclosed herein. The articulating microsurgical instrument may be configured to be operable with a Doppler probe, bone grasper, soft tissue grasper / dissector, scissors, flexible forceps, or a suction / irrigation line configured to provide tools within a surgical location that can be adjusted to a desired angle of operation. A tip assembly may comprise an articulating portion at a distal tip and the articulating portion may be configured to deflect upon actuation of an articulation control. The articulation control may be a trigger assembly or a roller wheel. A bayonet-style handle may include a set of posts configured to interact with the one or more control wires during actuation of the articulation control. One or more control wires may be housed in a lumen and actuated using a articulation control of a handle assembly.

The present disclosure is related to a blood flow measurement system containing, such as, a guide imaging probe, a first Doppler probe, a second Doppler probe, and a control unit, where the guide imaging probe includes a multiple imaging ultrasound elements disposed along a first direction, the first Doppler probe includes multiple first Doppler ultrasound elements disposed on one side of the guide imaging probe along a second direction corresponding to a direction perpendicular to the first direction, the second Doppler probe includes multiple second Doppler ultrasound elements disposed on the other side of the guide imaging probe along a third direction corresponding to a direction perpendicular to the first direction, and the control unit provides a control signal to control the guide imaging probe, the first Doppler probe, and the second Doppler probe.

The invention relates to the technical field of biomedical engineering, and discloses an elastic bandage type laser Doppler probe which comprises a mounting plate, one side of the mounting plate is connected with a left bandage, the left bandage is provided with a fixing hole, the other side of the mounting plate is connected with a right bandage, the right bandage is sequentially provided with a first limiting ring and a second limiting ring, and the first limiting ring and the second limiting ring are connected with the mounting plate. A groove is formed in one side of the second limiting ring, a clamping plate is arranged in the groove, the end of the right bandage is connected with a limiting frame, a cavity is formed in the mounting plate, a fixing shaft is arranged in the cavity, the fixing shaft is sleeved with a spring, and a sliding plate is arranged below the spring. In the invention, through cooperation of a plurality of fixing holes of the left bandage, a limiting ring I and a limiting ring II of the right bandage, a linkage clamping plate and an arc-shaped adaptive limiting frame, accurate adjustment and stable fixation of the length of the bandage are realized, and the situation that the bandage is twisted when the bandage is wound is prevented.

A blood flow measurement system, according to an embodiment of the present disclosure, may comprise: a first blood flow measuring device; and a second blood flow measuring device. The first blood flow measuring device may include: a first image guide probe; and a 1-1 Doppler probe and a 1-2 Doppler probe disposed in a direction perpendicular to the first image guide probe. The second blood flow measuring device may include: a second image guide probe; and a 2-1 Doppler probe and a 2-2 Doppler probe disposed in a direction perpendicular to the second image guide probe. The blood flow measurement system, according to the present disclosure, can more effectively monitor a patient's condition by measuring blood flow information at a plurality of points by using the plurality of blood flow measuring devices each including the image guide probe and the plurality of Doppler probes disposed in the direction perpendicular to the image guide probe.

Doppler probes, blood flow monitoring systems, and methods of monitoring blood flow are described. An example probe for monitoring blood flow through a blood vessel includes a retaining member, a first sensor, a first wire member, a second sensor, and a second wire member. The retaining member has a main body that defines an outer surface and an inner surface. The retaining member is moveable between an open configuration and a closed configuration. The inner surface defines a passageway in the closed configuration. The first sensor is disposed on the inner surface of the retaining member. The first wire member is attached to the first sensor and has a first end and a second end. The second sensor is disposed on the first wire member between the first end and the second end of the first wire member. The second wire member is attached to the second sensor.

The invention provides a laser Doppler velocity measurement device based on a multi-core optical fiber and a vortex light field, and belongs to the technical field of vortex light field velocity measurement. The system comprises a laser, an optical splitter, a phase modulator, a multi-core optical fiber fan-in and fan-out device, a multi-core optical fiber, a gradient refractive index lens, an optical beam splitter, a photoelectric detector, an analog-to-digital converter, an upper computer, a controller and a driving circuit, the optical path design is simplified, direct generation of vortex light is achieved through the multi-core optical fiber, the optical path design is simplified, and the power consumption is reduced. The Doppler probe is formed by the gradient refractive index lens and the multi-core optical fiber, the light beam focusing characteristic is optimized, the quality of a vortex light field is ensured, meanwhile, the flexibility of a system is improved, the advantages of being compact in structure, high in integration level and high in precision are achieved, a stable vortex field can be formed at the position with the short emitting distance, and the requirement for the working environment is lowered. And a more efficient solution is provided for measuring the speed of the compound motion.

The present invention discloses an ultrasonic pulsed Doppler blood flow measurement method and device. The blood flow measurement method includes: determining the physical position of a pulsed Doppler probe; based on the physical position of the current probe, determining an array formed by the arrangement of a plurality of array elements in the probe and determining the edge position of the array; based on the blood flow direction at the position to be detected, adjusting the positions of the sub-arrays for transmitting and receiving ultrasonic waves to shift towards the edge position to determine the positions of the sub-arrays; and performing ultrasonic pulsed Doppler blood flow quantitative measurement based on the positions of the sub-arrays. By only modifying the physical positions of the array elements participating in the current electronic beam synthesis, the steering angle is automatically enlarged, and even the steering angle that may have reached the limit (plus or minus 20 degrees) configurable by the user can be further enlarged to automatically meet the measurement included angle requirements of Doppler to the greatest extent.

A wearable Doppler blood flowmeter can be used with an inflatable cuff to measure blood flow, such as for assessing peripheral artery disease (PAD). The present approach can include techniques such as providing or using a wearable acoustic Doppler blood flowmeter, without requiring the intricate manipulation of a handheld Doppler probe. The system can select a pair of acoustic transmitter and acoustic receiver from a set of more than two transducers, including one or more of different locations, orientations, or spacings, such as to vary a targeted region. The RF echo response signal can be translated to an audio response signal. An audio response signal injection circuit can adaptively inject a noise or other enhancement signal, such as to help improve perceptibility of an audible characteristic of pulsatile arterial blood flow. A trained machine learning model can be employed to select or adjust operating settings, to assess diagnostic information, or both.

The invention relates to the technical field of fetal monitoring equipment, and provides a gynaecology and obstetrics fetus-voice meter which comprises a machine shell, the machine shell is fixedly connected with a front sleeve cover, the end of the front sleeve cover is connected with a rear sleeve cover through a connecting assembly so as to be bound to the waist of a pregnant woman, and one side of the top of the machine shell is fixedly connected with an earphone box; the other side of the top of the machine shell is rotationally connected with a display screen, and the display screen and the machine shell are attracted in a magnetic attraction mode. The Doppler probe assembly comprises at least two fetal heart probes, and the fetal heart probes are rotationally installed on the rear side of the front cover through a rotating module and used for emitting ultrasonic waves and receiving fetal heart reflection signals; a main control unit, a signal processing unit and a wireless communication unit are integrated in the machine shell. 80% of hardware filter circuits are reduced through a software normalization algorithm, and meanwhile, the influence of abnormal data is reduced by 60% through a peak value correction strategy. Through the collaborative architecture of wireless transmission and a local processor, the data processing delay is reduced from 200ms to 50ms, and meanwhile, the power consumption is reduced by 30%.

The invention provides an intelligent decompression mattress system based on blood perfusion multi-mode monitoring, comprising: an array type air bag layer comprising wedge-shaped air bags which are sequentially arranged along a central axis in the length direction of a bed body, and an electromagnetic valve is arranged in an air pipe of each wedge-shaped air bag; the multi-mode sensor monitoring layer comprises a pressure sensor, a temperature sensor, a subcutaneous humidity scanner, a laser Doppler probe and an ultrasonic probe which are arranged on the array type air bag layer; the multi-modal data fusion and clinical decision-making layer comprises a multi-channel data acquisition module and a control module, the multi-channel data acquisition module acquires the multi-modal monitoring data uploaded by the multi-modal sensor monitoring layer, and the control module performs data fusion processing based on the multi-modal monitoring data and establishes an early warning model; the control module sends a risk prompt signal based on a prediction result of the early warning model and controls an electromagnetic valve of the array type air bag layer to conduct inflation and deflation operation, the state of a patient can be effectively judged in real time according to monitored multi-mode data, and therefore the aim of assisting the patient in improving the body position is achieved.

The utility model provides a Doppler probe for measuring flow in a blood vessel. The Doppler probe comprises a T-shaped probe support composed of a transverse extending part and a vertical extending part. Wherein a first linear array probe is arranged on the transverse extension part, and a second linear array probe is arranged on the vertical extension part; during use, the transverse extension part is arranged perpendicular to a blood vessel so as to detect the diameter of the blood vessel through the first linear array probe of the transverse extension part, and the vertical extension part is arranged at the center of the blood vessel in the extension direction of the blood vessel so as to detect the included angle between the vertical extension part and the extension direction of the blood vessel through the second linear array probe of the vertical extension part.

Doppler probes, blood flow monitoring systems, and methods of monitoring blood flow are described. An example probe for monitoring blood flow through a blood vessel includes a retaining member, a first sensor, a first wire member, a second sensor, and a second wire member. The retaining member has a main body that defines an outer surface and an inner surface. The retaining member is moveable between an open configuration and a closed configuration. The inner surface defines a passageway in the closed configuration. The first sensor is disposed on the inner surface of the retaining member. The first wire member is attached to the first sensor and has a first end and a second end. The second sensor is disposed on the first wire member between the first end and the second end of the first wire member. The second wire member is attached to the second sensor.

The invention relates to the technical field of medical apparatus and instruments, and discloses a clamping force adjustable laser Doppler probe fixing clamp which comprises a main body shell, a clamping groove is formed in the right end of the main body shell, a clamping table is clamped in the clamping groove, a probe is fixedly connected to the right end of the clamping table, a first limiting groove is formed in the left end of the clamping table, and a second limiting groove is formed in the right end of the clamping table. And first clamping teeth are fixedly connected to the inner wall of the first limiting groove, a sliding groove is formed in the main body shell, a clamping plate is slidably connected to the interior of the sliding groove, and second clamping teeth are fixedly connected to the surface of the clamping plate. By arranging the clamping plate, the second clamping teeth, the first clamping teeth, the first spring, the pressing rod, the trapezoidal groove, the trapezoidal block and the second spring, the trapezoidal block slides in the inclined trapezoidal groove and synchronously compresses the second spring, the radial clamping force of the trapezoidal block on the clamping table is linearly increased along with the insertion depth, and the clamping teeth are immediately engaged again after the pressing rod is loosened, so that the clamping force is adjusted when the probe is fixed.