32 results about "Tracheal ring" patented technology

The invention relates to a degradable artificial trachea support frame and a manufacturing method thereof, which belong to the technical field of biological medicine. The support frame is characterized by being weaved into a circular pipe shape by polyp-dioxygen cyclohexanone monofilaments or polyglycolic acid monofilaments; the longitudinal axles of a tracheal wall transversely surround a pipe-shaped annulet formed by weaving the double-layered monofilaments at intervals; the monofilaments on the inner layer of the tracheal wall are bond uniformly; collagen is uniformly covered on the surfaces of the monofilaments; and chitosan is covered on the collagen in sequence. The manufacturing method comprises the following steps: weaving the circular pipe-shaped annular support frame; dipping the support frame into 2 percent of collage solution and drying; coating chitosan solution on the surface of the inner layer; and drying for standby. After the invention is executed, the stimulation of patches to human tissues is reduced and the anti-infectious capacity is strong, so as to be beneficial to reconstruct tracheas; a double-layer structure can accommodate the support frame for rehabilitating tracheal rings and achieve double rehabilitations in aspects of physiological anatomy and function of the defective tracheas; and the coating layer of the chitosan is arranged on the inner layer, so as to be beneficial to the creeping rehabilitation of tracheal endothelium.

A bougie device for guiding insertion of an endotracheal tube into an airway of a person, comprises an elongate body of shape memory and self-lubricating material, for example Teflon™. Accordingly no lubrication is required for insertion into the airway for ease of cleaning and sterilizing for reuse. Also, the amount of curvature of the overall rod as well as an angle of the tip of the rod can be adjusted due to the shape memory characteristics of the body to accommodate a particular patent's airway. The body can also be suitably sized to have vibration transmission characteristics such that a contact with one end of the bougie device with tracheal rings of the patient can be felt by a user.

The present invention relates to a medical device for performing surgery in the body using a percutaneous dilatational procedure, one embodiment of which is a percutaneous dilatational tracheostomy (PDT) device having a dilator with a non-uniform surface profile that is optimized to the relevant anatomy in order to reduce, uniformly distribute, and ensure uniform, or constant temporal derivative of, dilatational force throughout dilation. This serves to reduce trauma to the patient, specifically producing a reduction of anterior tracheal wall compression, posterior wall laceration/perforation, and tracheal ring fracture that may subsequently lead to subglottic suprastomal stenosis.

The present invention relates to a dilatation system for a medical device, in particular where the insertion of a tubular structure (e.g. cannula, catheter or drainage tube) is required. The dilatation system is ideally used for tracheostomy procedures, such as Percutaneous Dilating Tracheostomy (PDT). This minimally invasive surgical device enables to open a gap between the first tracheal rings and to introduce a tracheostomy tube in the trachea of a patient. The present invention also relates to a method inserting a tubular structure into a patient for example a tracheostomy tube in the trachea of a patient.

The invention relates to the technical field of medical appliances, in particular to trachea spreading forceps which comprise a left forceps body, a right forceps body and a self-locking mechanism, wherein the left forceps body comprises a left forceps handle, a left forceps neck and a left forceps head, the right forceps body comprises a right forceps handle, a right forceps neck and a right forceps head, the left forceps neck of the left forceps body is connected with the right forceps neck of the right forceps body by a hinged shaft, and the self-locking mechanism is arranged between the left forceps handle and the right forceps handle. The trachea spreading forceps are characterized in that the outer surfaces of the left forceps head and the right forceps head are cambered surfaces, the inner surfaces are smooth surfaces, and the left forceps head and the right forceps head are respectively provided with transverse teeth to enhance the friction between the trachea spreading forceps and tracheal rings so as to achieve the locating effect. By using the structure, the trachea spreading forceps in the invention have the advantages of novel structure, low operation risk, high success rate and the like, are convenient for operation, and can relieve pain of patients.

The invention relates to a PCL (polycaprolactone) slow-degradation tracheal stent. The stent comprises an outer stent and an inner stent, wherein the outer stent is a hollow C-shaped circular tube, the inner stent is a hollow circular tube, a hollow C-shaped ring is arranged on the outer surface of the outer stent, and the inner stent is embedded in the outer stent. The invention further providesa slow-degradation tissue engineering trachea and an application thereof. The tracheal stent has the advantages as follows: the tracheal stent is completely bionic in terms of organizational structure, the outer layer is tracheal cartilage, and the inner layer is ciliated columnar epithelium, tracheal toughness is achieved, expectoration capacity is maintained, and the incidence of infection aftertransplantation can be reduced; moreover, the tracheal ring is incomplete, has growth potential and can be applied to minor organisms. The tracheal stent can be made into any diameter, and can meet individualized requirements. The PCL stent can be degraded in vivo completely and slowly and is non-toxic to bodies.

The present disclosure provides a medical training simulation apparatus for training medical professionals, emergency medical support personnel, military personnel, parents or families of persons who have or will be undergoing neck or airway surgery, or any other persons requiring a simulator for learning the anatomy or practicing procedures or surgery of the neck and/or airway. The apparatus may include a simulated base that may be free standing or may rest on a mannequin and may have a hole for accessing the simulated airway, simulated skin, simulated fat, simulated lymph nodes, simulated neck musculature, simulated arteries and veins with simulated blood therein, simulated thyroid gland, simulated parathyroid glands, simulated laryngeal and tracheal cartilage including the hyoid bone, thyroid cartilage, cricoid cartilage, tracheal rings, epiglottis and arytenoid cartilages, mucosa, recurrent laryngeal nerves, trachealis muscle, esophagus and prevertebral fascia. The apparatus may include alteration or addition of one or more anatomical parts to simulate congenital or acquired anomalies. One or more parts of the simulation apparatus may be disposable or replaceable.

The invention relates to a method for establishing an animal in-vitro tracheal model for evaluating inflammatory response induced by tobacco mainstream smoke and an evaluation method, and belongs to the technical field of cigarette hazard assessment. The method for establishing the animal in-vitro tracheal model comprises the following steps: 1) separating a tracheal ring; 2) culturing the tracheal ring obtained in the step 1) in vitro; and 3) exposing the tracheal ring cultured in the step 2) to a flue gas condensate for 1 to 24 hours. The evaluation method of the inflammatory response induced by the tobacco mainstream smoke comprises selection of evaluation indexes and division of evaluation criteria; and evaluation of the degree of the inflammatory response. The method has the followingadvantages: 1) the detection method of the tracheal inflammation after smoke exposure has high efficiency; 2) the detection method of the tracheal inflammation after smoke exposure has good repeatability and system stability and high accuracy; and 3) the use range is wide. The method can be applied to in vitro exposure models of cigarette mainstream smoke, sidestream smoke, ambient flue gas and other smoke aerosols.

The invention relates to a 3D printed incomplete tracheal ring that can be embedded in a double-layer PLLA tissue engineering tracheal stent and its application, including a PLLA degradable tracheal stent with an incomplete tracheal ring on the outer layer and an incomplete inner layer The PLLA degradable tracheal stent with tracheal ring; the PLLA degradable tracheal stent with an incomplete tracheal ring on the outer layer is composed of an outer PLLA degradable tracheal stent and an incomplete tracheal ring; the side design of the outer PLLA degradable tracheal stent There is a stent gap through the tube wall and several incomplete tracheal rings; there is a through tracheal ring gap on the incomplete tracheal ring; the inner layer does not have a PLLA degradable tracheal stent nested with incomplete tracheal rings Inside the tube of a PLLA degradable tracheal stent with an incomplete tracheal ring on the outer layer. Its advantages are: completely bionic, which not only has the toughness of the trachea but also maintains the ability to expel sputum, reduces the incidence of infection after transplantation, and can be applied to minors; the tracheal stent can be degraded in the body and is non-toxic to the body.

The invention provides a method for preparing sedum sarmentosum extract and use thereof for preparing medicine for relaxing airway smooth muscle. The sedum sarmentosum extract includes at least one ofan ethanol extract of sedum sarmentosum, a petroleum ether extract of sedum sarmentosum, an ethyl acetate extract of sedum sarmentosum, a n-butanol extract of sedum sarmentosum, and a residual water-phase concentrate after extraction and separation. In the present application, through the detection of isolated tracheal ring muscle tension in experimental mice and Ca<2+> detection in airway smoothmuscle cells, the sedum sarmentosum extract is a highly effective drug for relaxing airway smooth muscle, and the relaxation is caused by blocking LVDCCs and activating calcium channels such as BKCa.The above research results can confirm that sedum sarmentosum extract has the ability to relieve airway obstruction of asthma patients and can be used in the preparation of drugs for relaxing airwaysmooth muscle.

The invention discloses application of an extract from sophora alopecuroides in preparation of medicines for relaxing the airway smooth muscle. Detection on the muscle tension of tracheal rings isolated from a laboratory mouse discovers that the extract from sophora alopecuroides is a medicinal material with an efficient effect for relaxing the airway smooth muscle, which indicates that sophora alopecuroides is a source for new efficient medicines for preventing and treating asthma. The extract from sophora alopecuroides can be used for relieving the symptom of airway obstruction when an asthma patient is attacked, and has a great popularization value.

The invention relates to the technical field of medicines, and in particular relates to application of a lalang grass rhizome ethyl acetate part extract in preparation of a medicine for relaxing pre-contracted tracheal smooth muscles. By detecting the tension of the isolated tracheal ring muscle of an experimental mouse, it is found that the lalang grass rhizome ethyl acetate part extract has theeffect of efficiently relaxing abnormally contracted tracheal smooth muscles; and it is indicated that the lalang grass rhizome ethyl acetate part extract is expected to be applied to relieving asthma. A basis is provided for developing the application of the lalang grass rhizome ethyl acetate part extract in preparation of the medicine for relaxing the pre-contracted tracheal smooth muscles.

The invention discloses the application of a rhizoma alismatis extract in the preparation of a drug for relaxing the airway smooth muscle. It is found that the rhizoma alismatis extract has an efficient function of relaxing the airway smooth muscle through the detection of the isolated tracheal ring muscle tension of an experimental mouse, can be used for alleviating the symptom of airway obstruction during asthmatic attack of a patient, and has great promotion value.

The invention discloses application of a Senecio scandens extract in the preparation of a medicine for relaxing airway smooth muscles. Research finds that the Senecio scandens extract is found to be amedicine with an efficient airway smooth muscle relaxing effect by detecting the tension of the isolated tracheal ring muscle of an experimental mouse, which indicates that the Senecio scandens is asource for developing an efficient new medicine for preventing and treating asthma, and can be applied to relieving the symptom of airway obstruction when an asthma patient is attacked. The research of the invention finds that the Senecio scandens extract inhibits calcium ion internal flow by blocking at least one of an LVDCC ion channel or an NSCCs ion channel so as to relax preshrunk airway smooth muscles.

A trachea cannula comprises a cannula body (1) and an inflatable bag (2), the cannula body is hollow structured and comprises a front end inserted into oral cavity of human and a rear end outside the oral cavity, and the front end of the cannula body is configured with an opening (6) which is disposed at a head of the front end. The trachea cannula further comprises a visible light source (3), a switch (5) for controlling the visible light source, and a battery (6) supplying power to the visible light source, and both the inflatable bag and the visible light source are secured at the front end of the cannula body; the switch, the battery and the visible light source are connected together in series via wires, forming a closed circuit; the distance from the visible light source to the opening is equal to the distance from a middle point between the third tracheal ring and the fourth tracheal ring to a position 1.5 to 2 cm from tracheal bifurcation at the trachea. Such intubation for the tracheal facilitates the medical staff to determine whether the trachea cannula is located at a correct position conveniently and quickly based on whether the visible light source is placed a position between the third tracheal ring and the fourth tracheal ring, without any harm to human body.

The invention relates to the technical field of medicines, in particular to an application of a thickleaf croton root ethanol extract to preparation of a medicine for relaxing preshrunk tracheal smooth muscle. According to the invention, test on in-vitro tracheal ring muscle tension of an experimental mouse discovers that the thickleaf croton root ethanol extract has the effective effect for relaxing tracheal smooth muscle, and the thickleaf croton root ethanol extract is expected to be used for relieving asthma. A basis is provided for developing the application of the thickleaf croton root ethanol extract to preparation of the medicine for relaxing preshrunk tracheal smooth muscle.