32results about How to "Physiologically" patented technology

The invention discloses an aortic-arch covered stent-graft, which comprises an aortic stent-graft and three branch artery stent-grafts, wherein a sunk part is arranged in the aortic stent-graft and comprises a left-side wall close to a proximal end, a right-side wall far away from the proximal end and a bottom wall for connecting the left-side wall with the right-side wall; two openings are arranged on one side wall in the left-side wall with the right-side wall of the sunk part, and one or two openings are arranged in the other side wall; an inner chimney graft with a caliber comparative with the openings is fixedly arranged in each opening; and the branch artery stent-grafts are respectively arranged in the chimney grafts. The stent-graft system with the structure can isolate aortic lesions involving the aortic arch and the ascending aorta and reconstruct the blood flow of branch arteries, is suitable for various normal and changing blood vessels, has a wide range of application, avoids customized stents, and can be in mass production. The time is effectively saved, and the operation is easy.

The invention discloses a wrist joint prosthesis which can be implanted within an injured wrist joint to replace the injured wrist joint. The wrist joint prosthesis includes a wrist joint intramedullary pin (1), wherein one end of the wrist joint intramedullary pin (1) is fixed on the metacarpal bone, and the other end thereof is connected with an interfacing (3); the interfacing (3) is provided with a spherical bulge (32); one end of a radius intramedullary pin (4) is fixed on the radius, and the other end thereof is provided with a spherical groove (41); the spherical groove (41) partially surrounds the bulge (32) of the interfacing (3); the interfacing (3) can rotate in the groove (41) through the bulge (32) and further movably rotate relative to the radius intramedullary pin (4); the radius intramedullary pin (4) can rotate relative to the wrist joint intramedullary pin (1) through the interfacing (3). With the wrist joint prosthesis provided by the invention, the bending, stretching, spreading, withdrawing and circumduction movements of the wrist joint are recovered, and the prosthesis conforms to the physiology of the wrist joint, so that the patient can move freely as usual; as the wrist joint prosthesis intramedullary pin is matched with the wrist joint interfacing, the wrist joint prosthesis has the characteristics of being safe and flexible, simple to mount, stable in structure and high in dislocation resistance.

The invention discloses a pulsating type artificial blood pump which comprises a driving device, a plane connecting rod mechanism and a blood pump. The driving device is connected with the blood pumpthrough the plane connecting rod mechanism, and the blood pump is used for simulating cardiac blood pumping. The pulsating artificial blood pump can generate pulsatile delivery while pumping blood, isused for heart failure assistance, extracorporeal circulation assistance in heart surgery and the like, can truly simulate cardiac blood pumping, enables perfusion of extracorporeal circulation to generate pulse blood flow similar to that generated by human heart pulsations, enables perfusion to conform to human body physiology, improves blood perfusion quantity of tissues in the circulation process, can well complete blood circulation, and reduces cardiac burden. The heart operation is safer, and the operation effect is better.

The invention provides an arc-shaped nail which is used for a surgical binding instrument, including a nail crown and a nail foot, at least one part of the nail crown part or the nail foot part takes a shape of arc; the plane which is perpendicular to the direction of the nail foot is a reference plane, the included angle of the plane on the nail crown where the arc shape is arranged and the reference plane is 0 degree to 180 degrees; the radian of the arc shape on the nail crown is one sixth of Pi to Pi; and two or more arc shapes on the nail crown are connected to form a curve. When in specific surgical application, the arc-shaped nail is stored in a nail slot of a nail chamber of the binding instrument, when the tissues to be inoculated are in place, the firing is implemented by a firing mechanism of the binding instrument, the arc-shaped nails which are pre-stored in various nail slots of the interior of the nail chamber are divergent to the outside along the axial direction, so as to be matched with a nail forming slot to carry out the anastomosis of two tissues. The diameter of an anastomosis ring which is formed by the arc-shaped nail of the invention is bigger than that of the anastomosis ring which is formed by the linear nail, which is not only easy to remove the apparatus after the operation, but is more in line with the physiological shapes of tissues; furthermore, the invention can be conductive to postoperative healing and can improve surgical effect greatly.

The invention discloses a preparation method for tissue engineering nerves of mesenchymal stem cells induced by compound nerves. The preparation method for tissue engineering nerves of mesenchymal stem cells induced by compound nerves comprises the steps of extracting nerves with an improved enzyme-hypotension-chemical detergent in a trigeminy manner based on a Sondell preparation method, constructing tissue engineering peripheral nerves with biological activity in vitro, and then compounding mesenchymal stem cells which are subjected to in-vitro cultivation, amplification and neuronal differentiation induction. According to the preparation method provided by the invention, the destructive effect caused by an existing acceptable chemical preparation method, namely the Sondell method, on a nerve basal membrane tube and an extracellular matrix structure to a certain extent is overcome; the influence on axonal regeneration is alleviated. The tissue engineering nerves of the mesenchymal stem cells induced by the compound nerves, which are prepared by the method disclosed by the invention, can be applied to the preparation of nerve grafts and have good effects in restoring peripheral nerve defect.

The invention relates to a portable front-line integrated rescue device, which belongs to the medical rescue field. The invention discloses a hollow cylindrical secondary pump, which is connected with a main pump, an inlet connecting tube is arranged at the upper part of the secondary pump, a secondary one-way flapper is sleeved at the lower end of the inlet connecting tube, an outlet connecting tube is arranged at the lower part of the secondary pump, the main pump and the secondary pump are connected through an outlet connecting tube at the lower part of the main pump being connected with the inlet connecting tube of the secondary pump, the series pump body composed of the main pump and the secondary pump and a bag body with the flapper function are connected through the inlet connecting tube of the main pump being connected with a bag body or the outlet connecting tube of the secondary pump being connected with the bag body, and more than one connecting tube with one end being inserted into the bag body is arranged on the bag body. The portable front-line integrated rescue device has the advantages that the volume is small, the weight is light, the structure is simple, the operation is convenient, stable positive pressure and negative pressure with enough strength can be produced, the function of reducing tissue and blood injury which conforms the physiological requirementscan be provided, the device can be freely assembled to realize the interchanging and the interaction of the multi-rescue functions, and the device is particularly applied to the integrated rescue in all disaster sites or wars.

The invention discloses a vertical obstetric table, belonging to a gynecology medical appliance. The vertical obstetric table comprises a table rest, a mattress and table legs, wherein the back of the table rest is provided with supporting posts; the table rest is backwardly inclined, has a radian and is fixedly connected with the mattress; one edge of the mattress is in an arc shape; the outer edge of the mattress is connected with auxiliary rods which are in the same plane with the mattress; the two auxiliary rods outwardly and obliquely stretch; and the mattress and the auxiliary rods are connected with the table legs. The invention is scientifically designed, meets human physiology, effectively protects safety of a mother and a son, lightening labor intensity of medical workers and isapplied for being promoted and used in vast gynecology medical institutions.

The invention discloses a novel stent-graft-type blood vessel assembly with branches in the aortic arch. It includes four artificial blood vessel components: ① A part of the artificial aortic vessel (1) with a stent, wherein the proximal part (6) of the artificial aortic vessel (1) has a stent in the blood vessel, and the distal part of the artificial aortic vessel (1) The end part (7) is a simple vascular membrane, and the proximal section (7a) of the simple vascular membrane part (7) is used to anastomose three branch vessels; ② a small branch vessel (2); ③ a branch vessel with a stent (3) ;④ A section of partly covered stent vessel (4), wherein the proximal part (4a) of the partly covered stent vessel (4) is a bare stent, and the distal part (4b) of the partly covered stent vessel (4) It is a covered stent vessel. The use of this vascular component can isolate aortic lesions involving the aortic arch and ascending aorta, and at the same time can rebuild the blood flow of branch arteries, and can preserve the normal vascular shape to the greatest extent. It is suitable for various branched vessels, including large branch variations. The blood vessel has a wide range of applications, avoids custom-made stents, can be mass-produced, effectively reduces trauma, and is easy to operate.

The invention discloses a method for preparing a self-assembled pre-vascularized stem cell membrane in vitro by utilizing paracrine effect of mesenchymal stem cells. The human mesenchymal stem cells (hMSC) are used to induce membrane formation in vitro for 6 days, MSC membranes are initially formed, then endothelial cells (EC) are directly inoculated on the surface at a saturation density, a nutrient solution is changed to a culture medium having co-culture condition for continuous culture for 10 days, and the construction of the pre-vascularized EC-MSC composite membrane is completed. Compared with the traditional method of adding growth factor to promote vascularization of the membrane, the vascular network formed by the vascularized membrane of the invention is more in conformity with physiological morphology and high blood vessel maturity, the preparation cost is low, and anastomosis is quickly formed with host vessel after implantation in vivo with no leakage. The technology can reconstruct a vascular system of the defect tissue in a short time, and contributes to the repair and regeneration of large-area tissue defects, which provides a new idea for vascular tissue engineering and has broad application value.