19 results about "Blood loss" patented technology

The application discloses a prosthesis system for minimally invasive femoral head replacement, which comprises a bone cutting assembly, a prosthesis, an extension rod, a guide frame and a locking nail. In the operation, only a small opening is needed on the lateral side of the femoral neck, and then a channel is established, and the prosthesis is implanted in the channel, so that the degree of trauma, the operation time and the blood loss are greatly reduced. A detachable extension rod is arranged on the implanted prosthesis, and after the extension rod is positioned by cooperating with the guide frame, the extension rod can guide the path of the locking nail, so that the locking nail is connected with the prosthesis, and is fixed with the large and small trochanters of the patient, so that the prosthesis can be combined with the relatively hard bone and the surface layer of the femoral neck to achieve stable combined support and avoid loosening of the prosthesis.

FIELD: otorhinolaryngology.SUBSTANCE: under endotracheal anesthesia, an endoscope equipped with optics and an instrument for removing pathological contents of the maxillary sinus are inserted into the nasal passage. The inferior nasal concha is displaced medially using a raspatory. Then, stepping back from the edge of the piriform opening by 1.5–2.0 cm in the caudal direction, a mucoperiosteal flap of the lateral wall is separated in the lower nasal passage. The mucoperiosteal flap is displaced posteriorly, exposing the bone skeleton in the projection of the inferomedial angle of the maxillary sinus. Next, using a cold plasma coblator, in ablation mode, the mucous surface of the bone skeleton is evaporated for 2–3 seconds, followed by coagulation of small vessels. Then, a bone valve measuring 10–15 mm is formed from the exposed bone skeleton. The bony valve is retracted in the caudal direction, forming an antrostomy. A 70-degree endoscope is inserted through the formed antrostomy and the pathological contents of the sinus are visualized. In this case, if the cyst is visualized with a coblator in ablation mode, the cyst is evaporated along with its contents, and the remaining cyst is captured and removed. If a polyp is visualized, the polyp stalk is first evaporated, and then the remaining part of the polyp is removed. If a foreign body is visualized, it is removed with forceps. In this case, if the foreign body is encapsulated or located in the thickness of the mucosa, a coblator in ablation mode evaporates part of the mucosa until the foreign body is exposed, and then removed. Next, the sinus cavity is washed with saline solution. The antrostomy is closed with a bone flap. The formed mucoperiosteal flap is placed back in its original place.EFFECT: method allows for endoscopic endonasal removal of pathological contents from the maxillary sinuses with a minimal risk of cyst / polyp recurrence and postoperative complications, reduced blood loss during surgery, shortened surgical time, postoperative rehabilitation periods, and temporary disability.3 cl, 3 ex

A flushing system configured to flush a wound and / or a body cavity of a patient comprises: an infusion liquid outlet to connect a first tube guiding a flow of infusion liquid from the system to the wound and / or the body cavity; an effusion liquid inlet to connect to a second tube guiding the effusion liquid flow from the wound and / or the body cavity to the system; a flow rate control system to control the flow rate at the infusion liquid outlet; and a hematocrit sensor configured to optically measure the hematocrit value of the effusion liquid received via the effusion liquid inlet, to obtain a blood loss volume and / or a blood loss flow rate from the wound and / or the body cavity by means of emitting light having different wavelengths. The different wavelengths are respectively assigned to the green wavelength range and to the red or near-infrared wavelength range.

The invention features polypeptides that include an extracellular ActRIIB variant. In some embodiments, a polypeptide of the invention includes an extracellular ActRIIB variant fused to an Fc domain monomer or moiety. The invention also features pharmaceutical compositions and methods of using the polypeptides to treat diseases and conditions involving weakness and atrophy of muscles, bone damage, low red blood cell levels (e.g., anemia or blood loss), fibrosis, and / or pulmonary hypertension. 20 24 20 43 42 25 J un 2 02 4 A B S T R A C T 2 0 2 4 2 0 4 3 4 2 2 5 J u n 2 0 2 4

The application belongs to the field of biomedical materials, and discloses a multifunctional hydrogel suitable for diabetic wound healing. The hydrogel is compounded by HA-Tris, EPL-Cpb and MXene / Mn composite nanoparticles in a mass ratio of 2:1:(0-0.2), and is rapidly crosslinked in 1 min through a triple mechanism, with a crosslinking efficiency increased by more than 80% compared with traditional methods and a yield of more than 99.5%. The application realizes chemical-photothermal dual-mode antibiosis through precise optimization of the ratio and reaction conditions and the function synergy of the components, with an inhibition rate of 96.86% and 97.23% for Escherichia coli and Staphylococcus aureus, which is increased by more than 62% compared with traditional silver-containing dressings; the hydrogel has a ROS clearance rate of 92.5% and an in-situ oxygen production rate increased by 58% compared with traditional methods, and can efficiently stop bleeding within 30 s, with a blood loss reduced by 90.3% compared with the blank group. The hydrogel has excellent biocompatibility and can comprehensively improve the pathological microenvironment of diabetic wounds, shortening the healing period of full-thickness skin wounds of diabetic rats from 21 days to 10 days, and providing a new and efficient biomedical material for the treatment of diabetic wounds.

The present application relates to the technical field of clinical risk early warning, in particular to a surgery anesthesia intraoperative risk early warning method based on AI multi-modal data fusion, comprising the following steps: constructing an ideal steady-state residence model based on anesthesia records, monitoring signs in combination with blood loss and calculating cumulative load of drug metabolism, evaluating physiological steady-state confidence, comparing benchmarks to determine implicit compensation failure, and generating compensation depletion risk early warning instructions. In the present application, a probability density model representing the physiological steady-state maintenance capability is constructed, the risk assessment dimension is expanded from a single numerical amplitude to a time residence length, the blood loss and drug load data accumulated in real time during the operation are used to perform dynamic time domain compression and coordinate translation transformation on the benchmark distribution curve, the implicit failure risk is identified in advance when the vital sign readings have not yet exceeded the normal range but the compensation potential is about to be depleted, the steady-state collapse trend caused by the time cumulative effect is effectively quantified, and the forward-looking of risk identification is improved.

Blood loss is quantified using a medical waste collection system, which includes a receiver removably coupled to a manifold. The manifold and / or the medical waste collection system is coupled to a fluid characterization module having sensor components to detect features representing the blood concentration within the fluid. The sensor components may include an emitter and a sensor to detect light transmitted and scattered by the fluid in a suction path or detection window. The first emitter may be a visible light LED, and the second emitter may be an infrared LED. A flow guide may provide a tortuous path within the manifold and facilitate the separation of gas and liquid within the fluid. Quantifying blood loss may include determining the blood concentration within the fluid and determining the volume of fluid collected. The sensor gain may be adjusted based on the transmittance of the collected fluid.

A thrombus filtration and reinfusion device includes a thrombus filtration structure and a blood receiving structure not in the same vertical space. The thrombus filtration structure has a receiving cavity 1 for receiving blood containing thrombi, and the blood receiving structure has a receiving cavity 2 for receiving filtered blood. The two receiving cavities are connected by multiple connecting tubes. A filter tube with a filter membrane is installed in the receiving cavity 1 from bottom to top, and the filter tube is positioned slightly higher than the bottom of the receiving cavity 1. The blood in the receiving cavity 1 first settles to the bottom by gravity, and then passes through the filter membrane in the filter tube from bottom to top, so that less thrombus is deposited on the filter membrane, reducing the frequency of filtration blockage. A blood reinfusion tube 1 is also provided. When a certain amount of blood is collected in the receiving cavity 2, the blood is reinfused through the blood reinfusion tube 1, which connects only the receiving cavity 2 and the blood reinfusion tube 2 of the thrombus aspiration tube, greatly avoiding the problem of excessive blood loss in patients during thrombus treatment.

This invention relates to the field of medical device technology and provides a balloon, comprising: a balloon body; and a traction wire adapted to the balloon body. The traction wire applies stress to at least a portion of the surface of the balloon body in its inflated state, causing at least one indentation to form on the surface of the balloon body connecting its proximal and distal sides. When the balloon body remains inflated, the indentation forms a channel allowing partial blood flow. The balloon provided by this invention can intermittently block or open bypass channels during surgery, avoiding complete blockage of blood flow during balloon expansion. This achieves the effect of occlusion without complete shut-off, reducing significant blood loss and preventing ischemia and necrosis of downstream tissues.

The utility model discloses a dialysis catheter pipe changing joint, including flow divider, first catheter, second catheter and third catheter, and one end of first catheter and second catheter is communicated with one end of third catheter through flow divider, and the other end of first catheter is provided with the one-way valve for inserting the guide wire, and the other end of second catheter is provided with the second catheter joint for connecting the contrast injector, and third catheter is provided with the third catheter joint for connecting the cut -off mouth of built -in catheter. The dialysis catheter pipe changing joint of the utility model can carry out the contrast and the guide wire implantation in patient's body simultaneously, is convenient for the operation of physician, reduces the operation risk, improves medical safety, can further reduce the catheter infection probability in the pipe changing process, can reduce the blood loss of patient, improves the tolerance of patient operation and postoperative recovery time, also can improve the medical experience of patient, improves the satisfaction of patient.

This invention relates to a thrombus aspiration system and its control method, comprising: an aspiration catheter having an aspiration cavity and a distal end having an opening; an electrode assembly disposed at the opening, the electrode assembly contacting an object at the opening and measuring its impedance value; and a controller acquiring the impedance value and determining the type of the object at the opening based on the impedance value. This thrombus aspiration system can determine the opening state of the aspiration catheter according to the type of object at the opening and adjust the aspiration strategy accordingly, thereby reducing blood loss and improving aspiration efficiency.

The present disclosure provides systems and methods including a bypass tool to facilitate insertion of a medical device into vasculature of a patient for performing a medical procedure. The medical device includes a distal tip assembly at a distal portion, a handle at a proximal portion, and a shaft that extends between the distal tip assembly and the handle. The bypass tool includes a body defining a bypass lumen therethrough, a seal having an aperture sized and shaped to receive the shaft of the medical device therethrough, and a cap configured to secure the seal relative to the body such that the aperture of the seal aligns with the lumen of the body. Various embodiments of the present disclosure provide a sealed bypass tool that minimizes blood loss and leakage from access introducers / sheaths.

The present application relates to the technical field of disease risk prediction, in particular to a risk prediction method for adverse reactions and complications of resectable NSCLC neoadjuvant immunotherapy during the perioperative period based on nomogram and application. The method comprises the following steps: screening relevant variables by single factor Logistic regression; introducing the screened variables into multi-factor Logistic regression to determine independent prediction factors, and constructing a prediction model and a nomogram according to the independent prediction factors; and evaluating the model discrimination degree by using a ROC curve, and evaluating the model calibration ability by using a Hosmer-Lemeshow test and a calibration ROC curve. The neoadjuvant immunotherapy combined with chemotherapy has a significant treatment effect (MPR rate 51.43%, PCR rate 31.43%), the incidence of treatment-related adverse reactions is 58.57%, and the incidence of postoperative complications is 44.28%. Through multi-factor analysis, it is determined that erythrocyte sedimentation rate (> 20 mm / h), intraoperative blood loss (> 200 ml) and postoperative hospitalization time (> 1 week) are independent risk factors for perioperative complications, and the risk prediction model constructed according to the independent risk factors has good prediction performance.

The utility model relates to medical instrument technical field, specifically disclose a kind of arm braking bracket for hemodialysis nursing, include: mounting mechanism and the bracket mechanism of assembly in the mounting mechanism one side, and respectively assembly in the fixed mechanism and monitoring mechanism of bracket mechanism top, the mounting mechanism includes clamp, the top of the clamp sliding installation has adjusting frame;The bracket mechanism includes the support seat of fixed installation in the adjusting frame one side, the top of the support seat is fixedly installed with multiple equidistance arrangement's clamping groove frame;The utility model can be through fixed mechanism and be fixed on support seat with patient arm, avoid the situation that arm occurs bending and moving, simultaneously, dialysis pipeline is fixed by being clamped on clamping groove frame, can prevent hemodialysis patient to move arm in dialysis process and lead to puncture needle to fall off or shift, to cause patient blood loss or hematoma influence arteriovenous fistula's use, guarantee the safety of patient.

Systems and methods for quantifying blood loss with a surgical sponge management system. A data reader detects a tag of the surgical sponge, and one or more processors identify a sponge type of the surgical sponge based on a unique identifier. A presentation window is displayed on a user interface with dimensions of the presentation window based on the identified sponge type. The processor(s) determine whether characteristics of the surgical sponge satisfy acceptance criteria based on the identified type of the surgical sponge. The acceptance criteria may include sponge presence, folded sponge, partial sponge, presentation distance, correct sponge, moving sponge, mask validation, and sponge supervision. An optical sensor captures a color image of the surgical sponge once the characteristics satisfy the acceptance criteria. A volume of the blood or blood component on the surgical sponge is estimated based on the color image, and displayed on a user interface.

This utility model relates to the field of medical supplies technology, and in particular to a novel hemostatic bandage, comprising a breathable protective layer, a pressure-fixing layer, and an instant hemostatic layer; the breathable protective layer includes antibacterial gauze, a polyester breathable membrane, a circular color-changing ink block, a first hook-and-loop fastener surface, and a first hook-and-loop fastener hook surface; the pressure-fixing layer includes elastic non-woven fabric, spandex elastic band, and a second hook-and-loop fastener surface; the instant hemostatic layer includes honeycomb absorbent cotton, chitosan sponge, thrombin coating, and a second hook-and-loop fastener hook surface. This novel hemostatic bandage achieves accurate and rapid hemostasis, reducing blood seepage to the edges. The circular color-changing ink block allows for direct monitoring, and the position can be adjusted promptly when the left or right side changes color, reducing the risk of blood loss. The first hook-and-loop fastener surface and the first hook-and-loop fastener hook surface of the breathable protective layer are bonded and fixed around the limb, with easily adjustable tightness, ensuring stable pressure of the pressure-fixing layer without affecting blood circulation.

This invention relates to the field of medical device technology and provides a balloon, comprising: a balloon body; and occlusion rings. Multiple occlusion rings are spaced apart on the outer surface of the balloon body along its axial direction. Each occlusion ring has at least one through-hole penetrating its wall thickness. When the balloon body inflates, adjacent occlusion rings and the blood vessel wall together form a buffer cavity. The balloon provided by this invention has multiple occlusion rings on the outer surface of the balloon body, each occlusion ring having at least one through-hole penetrating its wall thickness. When the balloon body inflates, adjacent occlusion rings and the blood vessel wall together form a buffer cavity. This configuration allows blood pressure to be gradually reduced as it flows through the continuous buffer cavities after balloon inflates. High-pressure blood from the distal end of the balloon is buffered and depressurized, becoming low-pressure blood flow, achieving the effect of occlusion without complete blockage. This reduces significant blood loss and prevents ischemia and necrosis of downstream tissues.

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.

This invention provides a disposable blood loss measuring device for vaginal delivery, belonging to the field of obstetrics technology. It addresses the problem of inaccurate and timely measurement of postpartum blood loss in existing technologies. The device includes a blood diversion plate, which is a flexible plate placed under the patient's body; and a measuring box with an opening at the top, located at the tail of the blood diversion plate, with the blood diversion plate extending into the measuring box. The measuring box and the blood diversion plate are detachably connected. This invention achieves convenient and accurate blood loss measurement, ensuring comfort and stability during use.