10 results about "Open thoracotomy" patented technology

The invention discloses a method for measuring the pressure in the heart cavity of a mouse, and relates to the technical field of experimental animal medical detection, and the method comprises the following steps: cutting an incision of about 1cm in the neck of the mouse; placing two sutures below the common carotid artery, and ligating the common carotid artery by using the suture at the distal end; the other section of suture line is placed in the middle of the right common carotid artery, the carotid artery is lifted up, the blood filling condition is observed, an opening is formed in the blood vessel, a pressure volume catheter is inserted, and meanwhile the suture line at the telecentric end is slightly pulled backwards to prevent bleeding; the pressure volume catheter is inserted into the left ventricle through the right common carotid artery, and the left ventricle pressure maximum rising rate and the left ventricle pressure maximum falling rate are collected. By means of the carotid artery approach, serious trauma caused by thoracotomy can be prevented, and the cardiac physiology can be possibly affected by the operation. Therefore, the carotid artery approach is more suitable for a long-time pressure collection experiment.

Procedures may be performed on the heart after the installation of a mitral valve fixation device. In order to prepare the heart for such procedures, the fixation device may be removed or disabled in minimally invasive ways (e.g., through an endovascular procedure), without requiring open access to the heart. The fixation device may be partitioned so that one portion may remain attached to each leaflet of the mitral valve. In another example, the leaflets may be cut along the edges of the distal element(s) of the fixation device, so as to cut the fixation device from the leaflet(s). Systems and devices for performing such procedures endovascularly are disclosed. Fixation devices with improved access to a release harness are also disclosed.

The invention relates to the technical field of postoperative pectoral girdles, in particular to an intelligent pectoral girdle for a patient after thoracotomy, which comprises two groups of winding grooves, pectoral girdles are wound in the two groups of winding grooves, a base plate is fixedly connected to the outer sides of the two groups of winding grooves, and two groups of pressure sensors for detecting the pressure of the thoracic cavity of the patient are mounted on one side of the base plate. Two sets of connecting rods are arranged on one side of the base plate in a sliding mode, and two sets of convex tooth rods driven by the two sets of connecting rods are arranged on the other side of the base plate in a sliding mode. The problem that the chest strap is too tight to press a wound or too loose to be fixed is solved, the fixing effect and wearing comfort are both considered, external force changes caused by actions of a patient are monitored in real time through pressure sensors on the two sides of the chest, and incision traction or friction damage caused by chest strap displacement is prevented.

The invention discloses a transjugular vein intervention type retrograde coronary sinus drug delivery catheter system, and relates to the technical field of catheters.The transjugular vein intervention type retrograde coronary sinus drug delivery catheter system comprises an injection base, a catheter and a balloon, the catheter comprises an air pipe and an infusion pipe which are integrally arranged, one end of the air pipe is connected to the injection base, the other end of the air pipe is connected with the balloon, and the balloon is used for blocking coronary sinus of the heart of a patient; the external end of the air tube can inject or extract air, one end of the infusion tube is connected to the injection base, the other end of the infusion tube is located in the heart of a patient, and the infusion tube penetrates through the balloon, is in sealed connection with the end of the balloon and is used for injecting liquid medicine or virus solution. The balloon can be used for blocking coronary sinus for a period of time to block venous circulation, and then the catheter is used for retrograde injection of awns or viruses into a coronary vein system, so that drugs directly act on myocardial tissues for a period of time, the local action time of the drugs is prolonged, the treatment efficiency is improved, systematic toxic and side effects are reduced, thoracotomy is not needed, and the treatment cost is reduced. The operation is more convenient.

The application provides a ventricular assist pump blood instrument and system, and relates to the technical field of medical instruments.The ventricular assist pump blood instrument comprises an in-vivo component, the in-vivo component comprises a support cover and an impeller mechanism; the in-vivo component has a folded state and an unfolded state, when being arranged at a position where the aorta is connected with the left ventricle or in the left ventricle, the in-vivo component is arranged in the unfolded state, a blood flow channel is formed by the covering film and the support cover, the impeller mechanism is rotated to increase the pressure of the blood in the blood flow channel, and then the in-vivo component can be used as a blood pump to promote the blood flow in the left ventricle to the aorta; meanwhile, the in-vivo component has a folded state, in the folded state, the impeller mechanism and the support cover are folded, the volume is small, the in-vivo component can be implanted into the position where the aorta is connected with the left ventricle or the left ventricle through a catheter, and a thoracotomy operation is not needed, so that the operation time is short, the trauma is small, and the patient recovers quickly.

The present disclosure provides a solution for assisting cardiac circulation of a subject. In one aspect of the present disclosure, the new solution replaces the common practice of implementing a cannula of left ventricular assist device (LVAD) to the left ventricle (LV) through a large opening made in the apex of the LV, which has some disadvantages such as requirement of sternotomy, making a hole in an already very weak left ventricle, requirement of cardiopulmonary bypass, etc.The solution of the present disclosure suggests introducing the inflow cannula, namely the cannula / tube that suctions blood from the heart, through an opening made in the left atrium appendage (LAA) and guiding it through the left atrium (LA) and the mitral valve (MV) into the LV to be positioned therein. The inflow cannula is designed to allow suction of blood along various portions of its length that are intended to be positioned within the heart, namely along portions that are positioned in the LV, LA and optionally the LAA.The blood that is suctioned by the inflow cannula flows into a mechanical circulatory support device to be pumped therefrom, via an outflow cannula and into the aorta, thereby allowing supply of oxygenated blood to the entire body. Optionally, the outflow cannula can be coupled to the descending aorta and not to the ascending aorta as commonly done in the cases of LVAD implementations.A second aspect of the present disclosure provides a new solution for overcoming right ventricle failure by withdrawing blood from a first portion of the pulmonary artery and streaming blood to a second portion of the pulmonary artery, the second portion is downstream the first portion, namely more proximal to the lungs. The two solutions may be carried out by a similar surgical procedure, such as left thoracotomy. If the two solutions of the present disclosure are used together, they form a total artificial heart solution.

Valve holders and introducers for delivering a prosthetic heart valve to an implant site are in various embodiments configured to facilitate insertion of prosthetic valves through small incisions or access sites on a patient's body. The valve holders can also be configured to reduce or eliminate the occurrence of suture looping or other damage to the prosthetic valve during implantation. A valve holder according to embodiments of the invention includes features that reduce or eliminate mistakes during implantation of the prosthetic valves, such as a removable activator dial and a removable handle that prevent implantation of the valve prior to proper deployment or adjustment of the holder. An introducer is provided which can facilitate passing of a prosthetic valve between adjacent ribs of a patient. Valve holders and introducers according to the various embodiments can be used in minimally invasive procedures, such as thoracotomy procedures.

Provided is a method for monitoring cardiac transport and thoracotomy based on high spatiotemporal resolution electrical mapping, which comprises: step S1: generating an electrical mapping image and correlation relationships between mapping electrodes, and acquiring a plurality of electrical mapping signal target waveforms; step S2: analyzing ECG signals in real time, performing denoising processing, and acquiring a plurality of target waveforms; step S3: dividing each target waveform into a plurality of sub-waveforms according to waveform types, inputting the plurality of sub-waveforms into a first model to acquire a first output result; if the result is abnormal, executing step S4, and if the result is normal, inputting a plurality of temporally consecutive second normal waveforms preceding the first normal waveform as a waveform sequence into a second model, and acquiring a second output result; and step S4: calculating and analyzing to acquire an abnormal position, generating a dynamic image, and marking the abnormal position on the electrical mapping image.

The invention provides a sternum plate, and relates to the technical field of medical instruments, the sternum plate comprises a first connecting piece and a second connecting piece; the first connecting piece comprises a plug board; an inserting convex block is arranged on the inserting plate, and a plurality of first retaining teeth are arranged on the two sides of the inserting convex block in the inserting direction; the second connecting piece comprises a connecting end; the connecting end comprises a first clamping part, a second clamping part and a limiting groove matched with the plug board, a clamping opening is formed between the first clamping part and the second clamping part, clamping opening side walls are arranged on the two opposite sides of the clamping opening, and second retaining teeth are arranged on the clamping opening side walls; the sternum plate is suitable for being matched with the limiting groove through the inserting plate, and limiting and guiding in the inserting process are achieved; the connection of the two connecting pieces is realized by utilizing the meshing design of the inserting convex block and the clamping opening; when a secondary thoracotomy operation needs to be carried out in an emergency, a common instrument can be directly used for cutting, the thoracotomy forceps can be rapidly opened without a special tool, and the operation process of the operation is simplified.

The utility model discloses a thoracic cavity strutting device relates to surgical instrument technical field, including handle, handle top fixed mounting support subassembly, handle inside movable installation drive subassembly, drive subassembly output is equipped with slider no.