77 results about "Posterolateral thoracotomy" patented technology

Mitral valve prolapse and mitral regurgitation can be treating by implanting in the mitral annulus a transvalvular intraannular band. The band has a first end, a first anchoring portion located proximate the first end, a second end, a second anchoring portion located proximate the second end, and a central portion. The central portion is positioned so that it extends transversely across a coaptive edge formed by the closure of the mitral valve leaflets. The band may be implanted via translumenal access or via thoracotomy.

Surgical methods and instruments are disclosed for performing port-access or closed-chest coronary artery bypass (CABG) surgery in multivessel coronary artery disease. In contrast to standard open-chest CABG surgery, which requires a median sternotomy or other gross thoracotomy to expose the patient's heart, post-access CABG surgery is performed through small incisions or access ports made through the intercostal spaces between the patient's ribs, resulting in greatly reduced pain and morbidity to the patient. In situ arterial bypass grafts, such as the internal mammary arteries and / or the right gastroepiploic artery, are prepared for grafting by thoracoscopic or laparoscopic takedown techniques. Free grafts, such as a saphenous vein graft or a free arterial graft, can be used to augment the in situ arterial grafts. The graft vessels are anastomosed to the coronary arteries under direct visualization through a cardioscopic microscope inserted through an intercostal access port. Retraction instruments are provided to manipulate the heart within the closed chest of the patient to expose each of the coronary arteries for visualization and anastomosis. Disclosed are a tunneler and an articulated tunneling grasper for rerouting the graft vessels, and a finger-like retractor, a suction cup retractor, a snare retractor and a loop retractor for manipulating the heart. Also disclosed is a port-access topical cooling device for improving myocardial protection during the port-access CABG procedure. An alternate surgical approach using an anterior mediastinotomy is also described.

A medical electrical lead to conduct electrical stimulation and / or signals between an electrical stimulator and a heart site includes an elongated lead body extending to a proximal connector for attachment to the electrical stimulator. An electrode head at the distal end includes an electrode tip member for fixation to the heart and an electrode backing member fixed to the lead body is releasably attachable to the electrode tip member for transmission of electrical signals between the heart and the electrical stimulator. The electrode tip member may include a first non-conductive base with an outwardly projecting tip electrode and a first mounting member projecting oppositely away from the non-conductive base. The electrode backing member includes a second non-conductive base and a second mounting member thereon adapted for mounting engagement with the first mounting member for selectively releasably but firmly integrating the electrode tip member and the electrode backing member.

The present disclosure is a device and method associated with the delivery of medical devices in the pericardial space using a minimally invasive approach with direct visualization. More specifically, the device can be used to deliver permanent pacing, defibrillation and cardiac resynchronization leads, as well as leadless pacemakers for cardiac rhythm management to the epicardial surface of the heart. A subxiphoid procedure is proposed as a minimally invasive alternative to thoracotomy, while the delivery tool incorporates a camera for direct visualization of the procedure. The tool also incorporates a steerable catheter to provide selective control of the placement and orientation of the medical device in the pericardial space.

A surgical instrument is configured to aid in performing a procedure of detaching an internal mammary artery (IMA) and the like, from the connecting tissues and side branch vessels which surround the artery in its native location, wherein the detaching procedure is preliminary to the performing of a coronary artery bypass grafting procedure and wherein the IMA is detached via a minimally invasive thoracotomy. To this end, an elongated slender rod includes a handle at its proximal end and an artery engaging loop, arc, fork configuration, or hook at its distal working end. Embodiments may incorporate electrosurgical capability or electrical insulation. A surgeon thus has means for harvesting an intact and undamaged graft vessel from its native location through a minimally invasive incision with enhanced speed, visibility, and freedom of motion.

Mitral valve prolapse and mitral regurgitation can be treating by implanting in the mitral annulus a transvalvular intraannular band. The band has a first end, a first anchoring portion located proximate the first end, a second end, a second anchoring portion located proximate the second end, and a central portion. The central portion is positioned so that it extends transversely across a coaptive edge formed by the closure of the mitral valve leaflets. The band may be implanted via translumenal access or via thoracotomy.

Mitral valve prolapse and mitral regurgitation can be treating by implanting in the mitral annulus a transvalvular intraannular band. The band has a first end, a first anchoring portion located proximate the first end, a second end, a second anchoring portion located proximate the second end, and a central portion. The central portion is positioned so that it extends transversely across a coaptive edge formed by the closure of the mitral valve leaflets. The band may be implanted via translumenal access or via thoracotomy.

The invention provides a self-adaptive locating mitral valve closing plate blocking body for repairing mitral regurgitation. The self-adaptive locating mitral valve closing plate blocking body for repairing the mitral regurgitation comprises a suture plastic ring which can be sutured on a mitral ring and a closing plate, the closing plate comprises a tongue-shaped plate and a supporting rod which is located at the top end of the tongue-shaped plate and connected with the suture plastic ring, and the closing plate can swing back and forth and can be connected to the suture plastic ring in a left-and-right twisting mode. The suture plastic ring is sutured on a valve ring of a mitral valve of a patient through a thoracotomy and an open heart surgery, a plastic function on the mitral ring which is diseased and swelled is performed, and the closing plate is supported. When a heart contracts and valve cusps are closed, the closing plate achieves self-adaptive locating of the position of the closing plate through swing and twisting of itself according to the position of regurgitation holes in the free edges of the valve cusps, the closing plate is made to be located at the position of the free edges when the two valve cusps are closed, the regurgitation holes are filled up, the closing plate is tightly attached to the free edges of the valve cusps , and the mitral regurgitation is lowered or avoided.

The invention discloses a claw-shaped sternum fixator. The claw-shaped sternum fixator comprises an inner claw gripping plate and an outer claw gripping plate, the outer claw gripping plate is provided with a socket with a tooth socket portion, the inner claw gripping plate is provided with a tooth inserting portion which is matched with the tooth socket portion through insertion, the inner claw gripping plate achieves insertion connection through the matching of the tooth inserting portion and the tooth socket portion, first saw teeth are arranged inside the tooth socket portion, the tooth inserting portion is provided with second saw teeth matched with the first saw teeth, the inner claw gripping plate is further provided with a lock loosening fastener and a lock loosening hole, the lock loosening fastener and the lock loosening hole are matched with each other, and the lock loosening fastener is hinged to the inner claw gripping plate; when the lock loosening fastener moves relative to the inner claw gripping plate to enter into the lock loosening hole in a matching mode, the first saw teeth of the tooth socket portion are engaged with the second saw teeth of the tooth inserting portion to facilitate the tight fit of the inner claw gripping plate and the outer claw gripping plate. The claw-shaped sternum fixator can be locked, fixed and opened without any auxiliary tools, reduces operation time, wins precious time for rescue of patients, improves achievement ratios of operation, can be used for conveniently adjusting folding width of thoracotomy, is convenient and stable in fixation.

The invention discloses a transthoracic minimally invasive occlusion interventricular septum defection plugger conveying appliance. The invention is characterized in that the device comprises a locating line, a conveying passage and a cardiac plugger adaptor; one end of the conveying passage is lead to the invasive occlusion part of the interventricular septum guided by the locating line, the cardiac plugger is installed inside the plugger adaptor, after being butted with the conveying passage, the cardiac plugger adaptor enters the position of the interventricular septum defection through the conveying passage and begins to work at the position. The conveying is mainly characterized in that the entire device is short and small, and can be held by hands directly. The defection part can be closed as near as possible, and puncture, direction adjusting, guide rail building, and plugger releasing can be finished by only one person, during the operation, once the septum defection is not suitable for the method or the plugging fails, the incision can be directly extended upward and changed into the traditional thoracotomy, no extra incision is needed, or transferred from the cardiac catheter room to the operating room, and the security of the patient is greatly ensured.

The invention discloses a medical bone wound hemostatic material. The bone wound hemostatic material is composed of the following raw materials by mass percent: 5-80% of sterilized biopolymer and 20-95% of medical calcium salt. The invention also discloses a preparation method for the medical bone wound hemostatic material. The medical bone wound hemostatic material prepared according to the method provided by the invention has the advantages of high plasticity, moderate plasticity, fine hand feeling, no local stimulation, excellent plasticity, performance safety, convenience in use and long-term storage. The medical bone wound hemostatic material provided by the invention can quickly stop bleeding in a practical application, has a function of promoting curing, is capable of increasing the wound healing effect and can prevent inflammation, edema and necrosis from happening. The medical bone wound hemostatic material can be widely used for stopping bleeding for the cavum medullare section and the bone section in craniotomy, thoracotomy and orthopedic surgery.

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.

The invention discloses a covered stent for aortic dissection surgery, a conveying device and a use method. The stent comprises a body which is a covered stent body. The stent is a conical stent with the diameter gradually reduced from the cardiac proximal portion to the thoracic aorta distal portion. An exposed portion is arranged on the lower portion of the body of the stent and is not covered. Three balloon dilatation stents are connected to the upper edge of the middle of the body. A protective gasket made from polytetrafluoroethylene is arranged at the near end of the body. The three balloon dilatation stents are provided with three catheters respectively. Each catheter is about 2 m long. The conveying device comprises a conveying sheath, the body of the stent is compressed in the conveying sheath, and the three balloon dilatation stents on the middle section of the body are compressed in the conveying sheath. A conveying sheath system is provided with an apex, and notches are formed in the tip end of the conveying sheath system for the body of the stent and guide wires and the catheters of the three balloon dilatation stents. The invention provides the covered stent for aortic dissection surgery. The stent is used for minimally invasive surgery treatment of Stanford A type aortic dissection with a wound among three branch vessels on the arcus aortae, avoids injuries caused by thoracotomy, and can be directly used for intra-cardiac wound occlusion.

The invention provides an intraoperative support conveying system and an intraoperative support system. An intraoperative support comprises a main support and a side supporting support arranged on the main support and stretching outwards. The intraoperative support conveying system comprises a main lining and a side supporting lining arranged on the main lining. The side supporting support is configured to be arranged on the side supporting support in a sleeving mode, the main support is configured to be arranged on the main lining in a sleeving mode, and the side supporting lining is arranged on the main lining in a swing mode to synchronously drive the side supporting support to swing relative to the main support. By the arrangement of the side supporting lining capable of swinging relative to the main lining, the side supporting support can synchronously swing relative to the main support, the side supporting support is aligned with the left subclavian artery to be easily implanted during an operation, it is avoided that the time of freeing and suturing the left subclavian artery in thoracotomy operation is too long, so that postoperative complications are increased, then the operating difficulty of the operation is reduced, the operating time of the operation is shortened, and the adaptation disease range of the operation is widened.

The invention relates to an adjustable bicuspid valve forming device. The adjustable bicuspid valve forming device comprises an annulus body, a right metal wire and a left metal wire. After a flexible pipe is bent, two ends of the flexible pipe are connected to form the annulus body. The connecting position of the annulus body is divided into a right end and a left end. Two holes are formed in the middle of the annulus body and connected with a left catheter and a right catheter respectively. One end of the left metal wire is fixed on the inner side of the left end, and the other end of the left metal wire penetrates through the connecting position of the two ends of the annulus body to penetrate into the right end and penetrate out from the right catheter. One end of the right metal wire is fixed on the inner side of the right end, and the other end of the right metal wire penetrates through the connecting position of the two ends of the annulus body to penetrate into the left end and penetrate out from the left catheter. The left end is sleeved into the right end or the right end is sleeved into the left end. Inverted hook-shaped teeth are arranged on an opposite surface of the connecting position of the left end and the right end. According to the adjustable bicuspid valve forming device, secondary thoracotomy does not need to be conducted, an annular inner diameter is adjusted through an adjusting handle so that a prospective result can be obtained, pain of mind and body and economical burden of a patient can be relieved, and complication of the secondary operation can be avoided, and the mortality rate of the secondary operation can be reduced.

The invention provides a mitral valve forming ring. The mitral valve forming ring comprises an inner core, a heating coil and an outer layer, wherein the inner core comprises a connecting piece and a spring made from a memory alloy material; the connecting piece is fixed to the spring, and is used for enabling the spring to form a structure which is matched with a heart cardiac valve annulus; the heating coil is used for heating the spring in order to retract the mitral valve forming ring; the outer layer comprises an elastic element and a polymer fabric with biocompatibility; the elastic element is arranged outside the inner core and the heating coil; the polymer fabric is arranged outside the elastic element. The mitral valve forming ring is implanted through conventional thoracotomy; if a patient is unsatisfactory about valve regurgitation correction or relapses after mitral valve forming ring implanting operation, the size of the forming ring can be adjusted repeatedly on a beating heart through an embedded lead without secondary thoracotomy, so that the problem of mitral valve regurgitation relapse is solved effectively.

The invention discloses a method for fixing a fish brain tissue specimen through systemic heart perfusion. The method is mainly characterized in that after fish anesthesia, thoracotomy is performed on the periphery of a heart surface projection area of the fish, ventral aorta intubation is performed through the ventricle, common cardinal vein intubation is performed through the atrium, ligation with an operation thread is used for fixing, and an out flow tube is connected with a graduated vessel for measuring liquid out-flowing quantity; a constant-speed perfusion pump is used for perfusing normal saline through a perfusion tube, and a 10% formalin solution is adopted for reperfusion; when perfusion is started, a line is marked on the skull instantly and craniotomy is performed, and the perfusion time is then decided through combination of the perfusion quantity and the out-flowing quantity when the color of the brain tissue changes white; the brain is picked and placed in the 10% formalin solution to be fixed for 48 h after perfusion is stopped, and the brain tissue specimen with complete structure, normal form and good state is obtained. By means of the method, the problems of insufficient fixing, non-comprehensive fixing area, tissue autolysis, cell deformation and the like of the fish brain tissue can be solved effectively, the brain tissue specimen with more complete structure and more ideal state is obtained easily, and the natural form is retained better.

Animal models of heart failure are established, which are often used for preclinical drug efficacy evaluation and mechanism research of heart failure therapeutic drugs. The present invention provides a simple and reliable minimally invasive intervention method for establishing an animal heart failure model. By implementing the minimally invasive intervention method, the animal is installed with a cardiac pacemaker, which avoids excessive trauma to the experimental animal during the thoracotomy operation, and reduces the The complexity of pacemaker installation and postoperative care costs have greatly improved the survival rate of animals after pacemaker installation, thereby ensuring the success rate of establishing animal models of heart failure.

A method and related apparatus for the minimally invasive implantation about a heart of at least a deployable device such as a heart assist device or cardiac compression device. The method comprises the steps of performing a left thoracotomy or subxiphoid incision; obtaining access to the pericardial sac; making a generally linear incision in the pericardial sac; positioning an assembly having an insertion aperture member with an upper ring and a lower ring or flange and insertion tube having therein a deployable device. The apparatus of the present invention includes an insertion aperture member having an upper ring and a lower ring or flange; and an insertion tube having therein a deployable device adapted to be deployed from the insertion tube inside the pericardial sac via a generally linear incision.

The invention discloses a sucked type material taking device for a bronchoscope. The sucked type material taking device for the bronchoscope comprises a flexible sleeve tube and an adjustable telescopic negative pressure tube arranged in the flexible sleeve tube, a negative pressure suction cup which is contained in the flexible sleeve tube and capable of stretching out the front end of the flexible sleeve tube is connected to the front end of the adjustable telescopic negative pressure tube, and the tail end of the adjustable telescopic negative pressure tube stretches out of the tail end of the flexible sleeve tube and is connected with a negative pressure source. The sucked type material taking device for the bronchoscope is used in cooperation with the bronchoscope, is convenient to operate, spheroidal foreign matters with smooth surfaces embedded in a weasand can be taken out, the defects of an existing bronchoscope material taking device can be overcome, foreign matters in segment bronchia can also be taken out, thoracotomy is avoided, and the practicability is high.

The present invention includes a method and device for the minimally invasive implantation in a heart of a deployable device through a left thoracotomy or subxiphoid incision.

The invention is concerned with simulation thorax dynamic negative pressure chest opening Operating Compartment, relating to box, press adjuster, gas tube and airproof connector. The box has upper, middle and down segments and the joint area of the down and middle segments at the front and back ends of the box have holes for neck and down abdomen. The down and middle segments of shell at left and right side of box and the joint area of the middle and upper segments of shell have holes for upper limbs to keep the lung organization take air exchange in primary manner when the thorax of body is open. It avoids forming gas chest of lung organization when the pleura cavity connecting with environment and the pulmonary collapse and pulmonary atelectasis formed by the disappearance of the negative press to pleura cavity, and avoids the damnification of windpipe of sickness for intubatton. The sick can renew as quickly as possible in low-grade anesthetic with few secretion of breath path and keep the function of ventilating.

The invention comprises a method for performing a coronary artery bypass graft on a beating heart under thoracoscopic visualization without opening the chest wall. At least one small opening is formed in the patient's chest, a target artery for an arterial blood supply is located, instruments are introduced through one or more small openings formed in the patient's chest to prepare the target artery for fluid connection to the coronary artery, and instruments are introduced through one or more small openings formed in the patient's chest to connect the target artery to the coronary artery distal from a stenosis. In a preferred embodiment, a minimal left anterior intercostal thoracotomy provides access to form an anastomosis between the left internal mammary artery (LIMA) and the left anterior descending artery (LAD) while thoracoscopic viewing facilitates harvesting the LIMA. In other embodiments, access to the patient's heart may be obtained through a trocar sheath or other means for providing percutaneous access to the patient's thoracic cavity without opening the chest wall. Thoracoscopic visualization, depending on the procedure, is used to locate the arterial blood supply, the location of the coronary artery to be bypassed and the location of the occlusion in the artery. In other embodiments, the diagonal (Dx) or circumflex (Cx) arteries may be bypassed.

The invention discloses a heart ischemia reperfusion model of a living piglet and a method for establishing the model, and aims to provide a heart ischemia reperfusion model and a method for establishing the model with universal animal variety, low cost and convenient operation by using the living piglet as an object. The living piglet is subjected to thoracotomy, then the heart coronary artery is subjected to left circumflex ligation, and later a ligation line is released so as to obtain the heart ischemia reperfusion model of the living piglet. The constructed heart ischemia reperfusion model of the living piglet provides a novel animal species for medical experiment, namely an experimental piglet model, and becomes an important animal model for researching human diseases. Because the piglet species for experimental selection has wide resource and large group number, the animal raw material cost is proper. The established open chest coronary artery ligation heart ischemia operation method for the living piglet provides feasibility for acquiring large amount of related test data of the piglet heart in future, is convenient to operate, and has research and reference value of clinical medicine.