72results about How to "Avoid surgical risks" patented technology

The invention discloses a wound-free adjusting type splint holder support used for fracture of distal radius. The wound-free adjusting type splint holder support used for fracture of distal radius comprises a hand portion splint holder, a forearm splint holder, traction universal adjusting rods and a connector. The two traction universal adjusting rods are fixedly connected with the hand portion splint holder and the forearm splint holder respectively, the two ends of the connector are movably connected to the traction universal adjusting rods respectively, a first connecting device is arranged on the hand portion splint holder, and a second connecting device is arranged on the forearm splint holder. The wound-free adjusting type splint holder support used for fracture of distal radius combines the advantages of operation treatment by splint fixation and an external fixation support, is superior to other treatment methods in aspects of maintaining fracture alignment and avoiding surgical risks and complications, and has advantages in aspects of a distal radius anatomy structure and wrist joint function recovery.

The invention is a method for brain glioma computer aided diagnosing system based on data excavating. The invention carries on attributes digitized process to data in the case bank at first by using the information in the case bank of the alioma sufferer, and creates the fuzzy membership relation to the digitized relation. Then the invention uses the fuzzy principle extraction method of the fuzzy maximal and minimal nerve network. The principle of diagnosis for excavating and discovering the alioma malignancy degree, the system is created according to the principle. The system can acquire the malignancy degree of any new case, acquires a high accuracy.

The invention is applicable to the technical field of operation assisting control, and provides a medical instrument control method and system for assisting in an operation. The method comprises the steps of acquiring attitude information of a first motion catcher and/or a second motion catcher in real time; based on current attitude information and original attitude information of the first motion catcher, obtaining the first attitude change amount; and/or, based on current attitude information and original attitude information of the second motion catcher, obtaining the second attitude change amount; based on the first attitude change amount and/or the second attitude change amount, determining the position offset and/or the attitude offset; according to the position offset and/or the attitude offset, adjusting the displacement and/or the attitude of a medical instrument. By means of the method or system, the operation can be accurately reflected in real time, according to the willing of a doctor, the system is closely cooperated with the operation progress to meet requirements of the operation, and the operation risk caused when an assistant or a nurse controls and adjusts the displacement and/or the attitude of the medical instrument can be avoided to a certain extent.

The present application relates to a transcatheter valve replacement system. The system includes a valve replacement prosthesis, a delivery catheter, a control handle and an anchoring device; the valve replacement prosthesis includes a valve stent, an artificial valve leaflet and an adaptive covered stent, the artificial valve leaflet is arranged in the valve stent, the adaptive covered stent is connected to the outer periphery of the valve stent, the valve replacement prosthesis is provided with an anchored unit, and the anchored unit is fixed to heart tissue by the anchoring device; and theanchoring device is arranged in the delivery catheter, the anchoring device includes an anchoring needle, an anchoring needle catheter, an anchoring needle push rod, and a controllable guiding device,the anchoring needle is pre-installed in the distal end of the anchoring needle catheter, the distal end part of the anchoring needle catheter has a flexible structure, one end of the controllable guiding device is detachably connected to the anchored unit, and the controllable guiding device can control the distal end part of the anchoring needle catheter to form a fixed bend angle in the radialdirection and make the distal end of the anchoring needle catheter adhered to the anchored unit.

The invention provides a difference-frequency electric stimulation device, system and method. The device comprises an input module, a central processor, a signal generation module and a signal outputmodule connected sequentially; the signal output module comprises multiple output interfaces, and each output interface is connected with one pair of electrodes; and at least two pairs of electrodes are arranged in a stimulated position of a stimulated object. Via the two or more pairs of electrodes, the electric stimulation device transmits two or more currents of different frequencies to the stimulated object, a low-frequency modulated pulse current (namely a difference frequency signal) is generated in a crossed area of the currents, and the low-frequency modulated current has an adjustmenteffect for brain cells. The low-frequency modulated current can stimulate the deep of the brain without influence on superficial neuron cells, and thus, the defect that the low-frequency current cannot reach deep in the brain is overcome, the risk of operation is reduced via an non-intrusion feature, the safety is high, a user is more willing to accept the device, and the applicability is high.

The invention discloses a drift tube straightener for a peritoneal dialysis tube. The drift tube straightener is characterized by comprising an adjusting elbow made of soft silica gel and arranged tobe of a hollow structure, notches are formed on the outer side wall of each of two opposite sides of the adjusting elbow, penetrating holes are formed in the middle of the direction of wall thicknessof the adjusting elbow, and adjusting and controlling ropes for containing and releasing the notches are penetratingly arranged in the penetrating holes; the adjusting elbow is provided with a rotating member for operating the adjusting and controlling ropes in a manner of being away from one end inserted into the peritoneal dialysis tube, and one ends of the adjusting and controlling ropes are fixedly connected with one end, inserted into the peritoneal dialysis tube, of the adjusting elbow while the other ends of the same penetrate the penetrating holes and then are in winding connection with the rotating member; a magnetism member is arranged at the end, used for being inserted into the peritoneal dialysis tube, of the adjusting elbow and can be in magnetic attraction with the magneticmember. The drift tube straightener can achieve the objectives of enabling the drifting peritoneal dialysis tube to return to a normal position in the abdominal cavity, avoiding surgical risk, relieving patient suffering and lowering medical cost.

The invention relates to the technical field of medical instruments, and discloses a press-holding system and a press-holding method. The press-holding system comprises a valve press-holding machine,a handheld press-holding device, a conveyor, press-holding sponge and a press-holding film, wherein the valve press-holding machine is used for performing first-stage press-holding on a valve, and thehandheld press-holding device is used for performing second-stage press-holding on the valve; the press-holding sponge is used during first-stage press-holding, and adopts a cylindrical structure, and the valve is arranged in the press-holding sponge in a penetrating manner; and the press-holding film is used during second-stage press-holding, and adopts a cylindrical structure, the valve is arranged in the press-holding film in a penetrating manner after the first-stage press-holding is finished, and the handheld press-holding device is provided with a self-locking structure. According to the press-holding method, the valve press-holding machine is used for performing first-stage press-holding on the valve, and the handheld press-holding device is used for performing second-stage press-holding on the valve. The valve can be effectively prevented from being broken in the press-holding process, and the valve is prevented from rebounding after being pressed and held.

The invention relates to the technical field of medical instruments, in particular to a posterior cervical plate, which comprises a first cervical plate, a second cervical plate and a U-shaped connecting body with an opening the size of which is adjustable, wherein the first cervical plate and the second cervical plate are connected through the U-shaped connecting body; the first cervical plate and the second cervical plate are all arranged as a bent cervical plate. According to the invention, the treatment of the spinal cervical diseases can be better achieved, and the pain brought by the operation to a patient can be reduced.

The invention discloses a total spondylectomy intercalated disc cutter, and relates to a surgical instrument for use in posterior spinal total spondylectomy. The total spondylectomy intercalated disc cutter is characterized in that a holding handle is arranged on the lower part behind a strip-shaped bracket; a blocking hook which is bent upwards is arranged at the front end of the bracket; a knife is arranged on the bracket; a tool bit at the front end of the knife can move forward and backward on the bracket, and the cutting edge of the tool bit corresponds to the blocking hook; when the blocking hook is pressed against one side of an intervertebral disc from the front side, the tool bit of the knife can be used for finishing cutting of the same side of the intervertebral disc forwards; when the blocking hook is pressed against the other opposite side of the intervertebral disc from the front side, the tool bit of the knife can be used for finishing cutting of the other opposite side on the same cutting plane of the intervertebral disc forwards, thereby finishing cutting of the whole intervertebral disc. By adopting the total spondylectomy intercalated disc cutter, possible surgical risk caused by the conventional instrument can be avoided, and the surgery time is shortened.

The invention discloses an atrial septum shunting device for treating heart failure, which comprises an outer tube, the outer tube being a hollow tube, a first stop block and a second stop block being arranged at the far end of the inner cavity of the outer tube, and a spring being arranged between the first stop block and the second stop block; a tool bit conveying pipe, arranged in the hollow inner cavity of the outer pipe, the tool bit conveying pipe being also a hollow pipe, a cutting tool bit being arranged at the farthest end of the tool bit conveying pipe, a protruding part being arranged on the periphery of the tool bit conveying pipe, and the protruding part being located between the second stop block and the spring; a liquid bag catheter, arranged in the hollow inner cavity of the scalpel head conveying pipe, and a liquid bag being arranged on the liquid bag catheter; and an operating handle, the near end of the outer tube, the near end of the cutter head conveying tube and the near end of the liquid bag catheter being fixedly connected to the operating handle. According to the device, after expansion, the liquid bag and the support abut against one side of the atrial septum, the cutting tool bit cuts in from the other side of the atrial septum, a hole is punched in the position of the atrial septum, and then heart failure is effectively treated.

The invention discloses a telescopic scalpel for spine and a scalpel head. The telescopic scalpel comprises the scalpel head, a scalpel rod and a handle, wherein the scalpel rod and the handle are used for being connected with the scalpel head; the scalpel head comprises a switch arranged in an inner cavity of the handle, and comprises a first-stage electrode, a second-stage electrode and a third-stage electrode which are sequentially arranged in a nested mode from inside to outside; the outer side of the first-stage electrode is sleeved with an insulting cannula and the end part of the first-stage electrode is connected with an electric wire through a stainless steel needle core to obtain a power supply; the outer side of the stainless steel needle core is connected with a first insulating layer in an attached manner; the second-stage electrode and the first-stage electrode are connected or disconnected after stretching, so that different cutting loops are formed; the third-stage electrode is fixedly connected with the handle through a stainless steel tube II; and a movable gap I is reserved between the insulating cannula and the first insulating layer and a stainless steel tube I arranged outside the insulating cannula and the first insulating layer. The scalpel can adapt to cutting and treatment of various spine wound surfaces with different areas, the replacement of the scalpel in the spine operation process is reduced, the treatment time of the spine operation is shortened, and the cross infection is reduced.

The invention provides a suction catheter. The suction catheter comprises a suction component and a balloon component, wherein the suction component is provided with a suction cavity; the balloon component is arranged on the suction component in a sleeving mode; a balloon cavity is defined by the inner wall of the balloon component and the outer wall of the suction component jointly; at least onecirculation groove extending in the extending direction of the suction component is formed in the outer wall of the balloon component; the balloon component has a contraction state when no fluid is introduced into the balloon cavity and an expansion state after the fluid is introduced into the balloon cavity through an injection port; the groove walls of the circulation grooves are distributed inthe circumferential direction of the outer wall of the balloon component at intervals; and the circulation grooves keep through from the far end to the near end when the balloon component is in the expansion state. According to the suction catheter, the circulation grooves are formed in the outer wall of the balloon component, so that when the balloon component is in the expansion state and the outer wall of the balloon component is attached to the wall of blood vessel, blood can continuously flow through the circulation grooves which are through from far to near, blood vessel blockage is prevented, normal blood supply of myocardium is guaranteed, and surgical risks are reduced.

The invention discloses a 3D printed extensible tibial prosthesis, which comprises an inner prosthesis and an outer prosthesis, wherein the inner prosthesis and the outer prosthesis are separately prepared through printing by 3D printing equipment; the outer prosthesis sleeves the outer part of the inner prosthesis; the inner prosthesis and the outer prosthesis are glidingly connected through a one-way clamp buckle; a plurality of holes I and fixing plates I are arranged at two ends of the inner prosthesis; a plurality of holes II and fixing plates II are arranged at two ends of the outer prosthesis; and a plurality of threaded holes are formed in each of the fixing plates I and the fixing plates II. A manufacturing method of the 3D printed extensible tibial prosthesis comprises the following steps of performing double-lower-limb crus CT scanning on a patient; building a double-side tibial 3D model of the patient; confirming a prosthesis replacement region; and printing the prosthesis.The 3D printed extensible tibial prosthesis and the method have the advantages that the operation risk is low; the bone growth speed is precisely controllable; the operation time is short; the pain feeling of the patient is slight; the bone ingrowth can be induced by the fusion prosthesis surface of the prosthesis and the bone; after the fusion of the prosthesis with the long bone, the intensityis reliable; the wound appearance is good; the postoperative care is simple; the operative complications are few; and general expenses in the perioperative period can be obviously reduced.

The invention discloses a serum-free umbilical cord mesenchymal stem cell composition and application thereof. The composition comprises umbilical cord mesenchymal stem cells, a human albumin solutionand a sodium chloride solution, wherein the mass fraction of the sodium chloride solution is 0.9%, and the umbilical cord mesenchymal stem cell composition is applied to preparing medicines for treating or preventing osteoarthritis. In this way, according to the umbilical cord mesenchymal stem cell composition and application thereof, an optimized preparation volume and a component concentrationare adopted, the umbilical cord mesenchymal stem cells are combined with sodium chloride to prepare an injection, and osteoarthritis injury can be treated under the condition that the low injection amount is about 3-6 ml.