8 results about "Arterial canal" patented technology

The application discloses a blood purification device and a storage medium. The device comprises a memory and a processor. The memory stores a computer program, and the processor executes the computer program to realize the method. When the actual rotating speed of a first peristaltic pump detected is greater than a preset rotating speed, the pressure alarm range of an arterial pipeline and the pressure sampling period of a first pressure sensor are determined according to the actual rotating speed of the first peristaltic pump. The first pressure sensor is controlled to periodically sample the blood pressure of the arterial pipeline according to the pressure sampling period, and a plurality of continuous first detection pressures are obtained. Whether the first peristaltic pump is stopped is determined according to the first average pressure of the plurality of continuous first detection pressures and the pressure alarm range of the arterial pipeline. In this way, the application can more accurately and timely discover the pressure fault of the arterial pipeline, and improve the blood flow safety of the arterial pipeline.

The application discloses a method for adjusting the pressure of a main pump in an extracorporeal circulation process, and the method comprises the following steps: after the pre-charging of a membrane oxygenator is completed, an arterial pipeline connected with the membrane oxygenator is clamped and closed, and only a small side pipeline is left to communicate with the membrane oxygenator; a pump pressure gauge is arranged on the small side pipeline; the main pump is adjusted to a required position, and the pressure of the main pump on the circulating pipeline is adjusted, and the pressure is adjusted to 150mmHg-250mmHg. The specific pressure value of the main pump when the pressure is adjusted is displayed by the pump pressure gauge, so that the adjustment process and result can be visualized, the adjustment result is converted into the specific pressure value of the pump pressure gauge, the reference data of the adjustment of the pressure of the main pump is standardized, the adjustment precision is effectively ensured without relying on experience and feeling, the adjustment mode is quick and accurate, the adjustment efficiency can be improved, and the stability of the adjustment pressure is ensured by controlling the pressure of the main pump, so that the backflow of arterial blood caused by unstable pressure can be avoided.

An extracorporeal and drug delivery system includes: (i) a renal failure treatment machine operable with a blood filter in fluid communication with an arterial line and a venous line, the machine including: (a) an effluent pump for pumping effluent from the blood filter at an effluent flow rate; and at least one of: (b) a dialysis fluid pump for pumping dialysis fluid to the blood filter at a dialysis fluid flow rate; (c) a pre-dilution pump for pumping replacement fluid into the arterial line at a pre-dilution flow rate; or (d) a post-dilution pump for pumping replacement fluid into the venous line at a post-dilution flow rate; (ii) an infusion pump operable to deliver an intravenous ("IV") drug to a patient at an IV drug flow rate; and (iii) a coordination logic implementer configured to adjust the IV drug flow rate based on an amount of the IV drug removed via the effluent flow rate.

This application provides a catheter assembly and a carotid artery bypass system. The deformable tube has axial telescoping function, and the deformable part is movably sleeved on the outside of the deformable tube. The distal end of the deformable part is connected to the deformable tube and the inner catheter, and the proximal end of the deformable part is connected to the deformable tube and the outer catheter. The deformable part has a contracted state and an expanded state. When the above-mentioned carotid artery bypass system is inserted into the artery, the operator can actively control the shortening of the deformable tube at an appropriate time, thereby increasing the effective working window of the common carotid artery segment. The wide range of telescoping can dynamically match the length of the common carotid artery lesion, covering most clinical cases of carotid artery stenosis. In addition, the operator can also actively control the contracted and expanded states of the deformable part at an appropriate time, using the expanded state of the deformable part to properly fit the inner wall of the blood vessel, forming a mechanical anchoring point on the inner wall of the blood vessel, effectively solving the problem of unexpected slippage of the carotid artery nerve protection system relative to the common carotid artery.

The application provides a traditional Chinese medicine composition for treating pulmonary arterial hypertension and a preparation method and application thereof, and belongs to the technical field of traditional Chinese medicine. The traditional Chinese medicine composition is composed of ginseng, astragalus, cassia bark, prepared licorice, prepared rehmannia, angelica, white peony root, chuanxiong, persicae semen and safflower. The preparation method is as follows: water is added to decoct and extract to obtain a traditional Chinese medicine extract; the traditional Chinese medicine extract can be further concentrated into a clear paste, and excipients are added to prepare other dosage forms. Animal experiments show that the traditional Chinese medicine composition can significantly reduce the pulmonary arterial pressure of a hypoxic pulmonary arterial hypertension model rat, reduce the right ventricular hypertrophy index, reduce the wall thickness percentage and area percentage of pulmonary arterioles, increase the lumen area percentage of pulmonary arterioles, and effectively improve pulmonary vascular remodeling; clinical cases show that the traditional Chinese medicine composition can significantly improve the symptoms of pulmonary arterial hypertension and heart failure. The traditional Chinese medicine composition has the effects of tonifying qi, activating blood, removing blood stasis and dredging collaterals, can be used for preventing and / or treating pulmonary arterial hypertension, and has good safety.

The present technology relates to devices for treating arteries. In several embodiments, for example, the present technology comprises an expandable structure configured to be intravascularly positioned within a lumen of the artery at a treatment site, where the artery has a substantially circular cross-sectional shape at the treatment site prior to deployment of the expandable structure therein. When the expandable structure is in an expanded state and positioned in apposition with the arterial wall at the treatment site under diastolic pressure, the expandable structure may force the artery into a non-circular cross-sectional shape. A cross-sectional area of the artery in the non-circular cross-sectional shape may be less than a cross-sectional area of the artery in the substantially circular cross-sectional shape.

The application discloses a hemodialysis circulating pipeline, which comprises an arterial pipe and an arterial pot installed on one side of the arterial pipe, the outer wall of the arterial pipe is uniformly connected with a plurality of auxiliary pipes, the top end of the auxiliary pipe is provided with a sealing mechanism, and a buffer pot is installed on the top of the auxiliary pipe for reducing instantaneous impact during liquid supplementing, and the application relates to the technical field of dialysis pipeline. The hemodialysis circulating pipeline has the advantages that the joint anti-loosening performance is improved compared with the traditional conical surface friction joint through the triple anti-loosening mechanism of the axial thread fastening of the external connection fixing mechanism, the end surface elastic sealing and the anti-skid point static friction, the joint effectively resists the low-frequency vibration of a dialysis machine and the continuous pulling of a patient, and the double structure of the elastic clasp axial locking and the steering protrusion circumferential locking of the steering limiting mechanism is matched, the joint anti-pulling-off force is further improved, the serious safety hazards such as blood leakage and joint collapse are fundamentally eliminated, and the risks of patient blood loss and air embolism are avoided.

The present application relates to the field of medical apparatus and instruments, more particularly to a single-pump dialysis machine automatic priming detection method and system, the specific steps comprising: dialysate is used to automatically prime the single-pump dialysis machine through the series connection of the ultra-clean filter; the single-pump dialysis machine comprises a dialyzer, an arterial pipeline and a venous pipeline; after the priming fluid enters the single-pump dialysis machine, the alarm system is used to monitor and warn the leakage existing in the venous pipeline and the arterial pipeline; the present application is used to solve the problem that the dialysate in the single-pump dialysis device does not meet the replacement fluid requirements, affecting the replacement effect; manual priming is prone to errors, physiological saline bags are consumed in large quantities; and the air tightness cannot be detected; the ultra-clean filter is used to reach the priming fluid standard, improve the priming effect, reduce the use of physiological saline in the traditional steps, and reduce the use cost; the automatic priming can be completed in both hemodialysis (HD) and hemodiafiltration (HDF) modes; the alarm system is used for leakage monitoring, avoiding serious accidents caused by improper use.