125 results about "Thoracoscopes" patented technology

A prosthetic valve assembly for use in replacing a deficient native valve comprises a replacement valve supported on an expandable prosthesis frame. The valve may be delivered transluminally or transmyocardially using a thorascopic or other limited access approach using a delivery catheter. Preferably, the initial partial expansion of the valve is performed against the native valve annulus to provide adequate anchoring and positioning of the valve as the remaining portions of the valve expand. The valve may be delivered using a retrograde or antegrade approach. When delivered using a retrograde approach, a delivery catheter with a pull-back sheath may be used, while antegrade delivery is preferably performed with a delivery catheter with a push-forward sheath that releases the proximal end of the valve first.

A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools. The method of the present invention will be particularly suitable for forming coronary artery bypass grafts, where an arterial blood source is created using least invasive surgical techniques, and the arterial source is connected to a target location within a coronary artery while the patient is under cardiopulmonary bypass and cardioplegia.

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 method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools. The method of the present invention will be particularly suitable for forming coronary artery bypass grafts, where an arterial blood source is created using least invasive surgical techniques, and the arterial source is connected to a target location within a coronary artery while the patient is under cardiopulmonary bypass and cardioplegia.

A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools. The method of the present invention will be particularly suitable for forming coronary artery bypass grafts, where an arterial blood source is created using least invasive surgical techniques, and the arterial source is connected to a target location within a coronary artery while the patient is under cardiopulmonary bypass and cardioplegia

Devices and methods whereby therapeutic agents may be injected into distinct organ locations in a minimally invasive manner. Most preferably the devices and methods employ a video-assisted thorascopic system (VATS) to enable a physician in real time to visually identify a distinct organ location into which therapeutic agent is to be injected. In particularly preferred forms, devices are provided for injecting a therapeutic agent into a tissue site which include a proximal handle, and a tubular barrel distally extending from the handle. The barrel has an injection needle at a distal end thereof which is most preferably angled relative to the barrel's elongate axis. The internal space of the barrel is sized and configured to receive a cartridge containing a therapeutic agent to be injected into the tissue site. A plunger assembly and injection trigger assembly are provided so as to cause the plunger to expel a predetermined volume of the therapeutic agent from the cartridge to the needle and thereby allow injection thereof to the tissue site in response to operation of the trigger assembly.

Devices for treatment of congestive heart failure include devices insertable over and clamped on all or a selected portion of the exterior of a heart. The devices may be introduced surgically, or under thoracoscopic control around a portion or all of the exterior of the heart.

The invention discloses an automatic tracking system for an operative region of a laparothoracoscope. The automatic tracking system comprises a controller, an operative instrument, an image collecting module, an image caching module, an operative region identifying module and an image display module, wherein the controller is used for monitoring a minimally invasive surgery process in enterocoelia and thoracic cavity; the operative instrument is arranged in an instrument channel of the laparothoracoscope, is connected with the controller and is used for performing the minimally invasive surgery in the enterocoelia and thoracic cavity; the image collecting module is arranged in a shooting channel of the laparothoracoscope, is connected with the controller and is used for shooting the images of the organs and the minimally invasive surgery process in the enterocoelia and thoracic cavity; the image caching module is connected with the controller and is used for storing the images in the enterocoelia and thoracic cavity; the operative region identifying module is connected with the controller and the image caching module and is used for identifying the image of the operative instrument in the shot images; the image display module comprises a whole image display module and an operative region image display module and is used for displaying the image of the minimally invasive surgery process. The automatic tracking system for the operative region of the laparothoracoscope can automatically track the local image of the operative region in real time while realizing the panorama image display and also can freely amplify the local image.

A device for removing tissue by means of laparoscopy or thoracoscopy with an operating part and an optionally partially open hollow tube with a guide for operating a removing part. The removing part has the form of a zeppelin with one or more ribs. The removing part is provided on the upper side with longitudinal connecting elements.Further described is an application of such a device in a surgical treatment wherein, by use of the operating part, the removing part with the form of a zeppelin is opened out, the removed tissue is collected in the expanded bag of the removing part, and the removing part with tissue is pulled optionally at least partially into the open part of the hollow tube. The connecting elements of the removing part can then be brought together and snapped or zipped closed.

This invention relates to an improved suture passer device for inserting and retrieving suture during abdominal or thoracic surgery. The device consists of a probe member having a blunt needle tip that forms the terminal distal end of the probe member. A flexible thread having a bight portion is so carried by the probe member to permit the bight portion to extend from a lateral port located intermediate the distal terminal end and proximate end of the probe member. The extension of the bight portion through the lateral port forms a loop for receiving an end segment of the suture.

A delivery system for use in minimally invasive surgery that is made up of a substantially cylindrical hollow sleeve and a hooked deployment rod adapted to slide within the hollow sleeve is provided. The inventive delivery system serves to protect and pass anastomotic devices such as self-closing surgical devices (e.g., self-closing surgical clip assemblies) through laparoscopic and thoracoscopic parts. The subject invention also provides a method for protecting and passing such anastomotic devices through laparoscopic and thoracoscopic parts and for precisely delivering these devices to operating or surgical sites.

The invention discloses nano-magnetic silicon rubber which is prepared from a component A and a component B according to a certain proportion, wherein the component A is composed of vinyl silicone oil, silane coupling agent surface modified nano Fe3O4, a platinum catalyst, an inhibitor and white carbon black, and the component B is composed of dimethyl hydrogen containing silicone fluid, vinyl silicone oil, silane coupling agent surface modified nano Fe3O4 and white carbon black. The nano-magnetic silicon rubber has biocompatibility and favorable magnetism and can be used for researching and developing a medical magnetic navigation device such as a thoracoscope lens and relevant appliances. The invention also discloses a preparation method of the nano-magnetic silicon rubber, comprising the following steps of: uniformly mixing the component A and the component B, then, pouring, and curing and forming under the action of an external magnetic field to prepare the nano-magnetic silicon rubber. The method is simple and safe in operation and suitable for industrial production.

The invention belongs to the technical field of medical appliances and discloses a lung fixer for a thoracoscopic cardiac surgery of a newborn baby. The lung fixer is of a symmetrical structure and comprises 2 sleeves, a thin-walled structure, connecting pipes and snapping buckles, wherein the sleeves are of hollow structures, the thin-walled structure is arranged between middle-upper parts of thetwo sleeves, lower parts of the two sleeves are connected with each other, and the two sleeves are omega-shaped; the sleeves sleeve forceps head ends of a pair of separating forceps and can cover theforceps head ends of the separating forceps; and first ends of the connecting pipes are connected with lower ends of the sleeves, second ends of the connecting pipes are connected with the snapping buckles, and the snapping buckles are in snapped connection with handle ends of the separating forceps so as to prevent the lung fixer from falling off during the surgery. The lung fixer is used in a manner of being matched with a thoracoscope and can serve as a lung baffle, blind areas pressing lung tissue are reduced, the omission of breaks of lungs is prevented, the risk of operative complications is lowered, and an appliance purchasing expense and an appliance disinfection and depletion expense are reduced; and the lung fixer disclosed by the invention can also serve as a disposable product, so that the possibility of cross infection is lowered.

The invention discloses a modified rib connector for thoracoscopes. in order to solve the problem that when fixed to ribs, an existing connector is fixed mostly through a single face, is poorly firmlyfixed and is easily loosened, the modified rib connector for thoracoscopes is disclosed, which comprises a connection plate; fastener units are arranged at the left and right ends of the connection plate respectively; each fastener unit includes two fasteners positioned in the front and rear of the connection plate respectively; each connection plate is provided with mounting holes matching withthe fasteners; each fastener comprises a hollow rotary block rotationally mounted on the connection plate; the upper end of each hollow rotary block is provided with a counterbore; each hollow rotaryblock is fixedly sleeved with a toothed ring in the corresponding mounting hole. Through clamp blocks, the hollow rotary blocks, screws, springs, the toothed rings and racks, a rib can be fixed through multiple faces at the same time; the connector herein can be firmly fixed to the rib, and loosening rarely occurs.

The invention relates to an incision dilator for a single-hole thoracoscope. The dilator comprises a dilator body, a first dilation ring arranged at the upper end of the dilator body and a second dilation ring arranged at the lower end of the dilator body, wherein the dilator body is tubular, a round channel allowing a thoracoscope camera to pass is formed in the inner side wall of the dilator body, a reinforcing layer is arranged on an inner ring of the round channel, and the diameter of the first dilation ring is larger than that of the second dilation ring. The incision dilator for the single-hole thoracoscope is simple in structure, compact in design and convenient to use, the reinforcing layer is arranged on the round channel allowing the thoracoscope camera to pass and can prevent the thoracoscope camera from compressing the dilator body during using, meanwhile, the thoracoscope camera is supported to a certain extent, deformation of the dilator body in an surgery process is avoided, an incision can be effectively prevented from retraction, and a smooth surgery is guaranteed.

The invention provides a system and method for performing less-invasive surgical procedures within a body cavity. In a preferred embodiment, the invention provides a system and method for isolating a surgical site such as an anastomosis between an internal mammary artery and a coronary artery in a thoracoscopic coronary artery bypass grafting procedure. The system comprises a foot (11) pivotally coupled to the distal end of a shaft (3) by a linkage (13). The foot has first and second engaging portions (15, 17) with contact surfaces for engaging a tissue surface. The engaging portions are movable between an open position, where the contact surfaces are separated by a gap, and a collapsed position, where the foot is configured for delivery through the percutaneous penetration. An actuator, at the proximal end of the shaft, can be rotated to pivot the foot about a transverse axis so that the contact surfaces are oriented generally parallel to the surgical site to apply pressure to the tissue structure on both sides of the surgical site.

The invention discloses a pair of magnetic-mediated pulmonary lobe traction tongs, which comprises pulmonary lobe traction tong heads, a joint, a spring steel plate, connecting lines, a traction block and an in-vitro traction magnet. The instrument, by controlling the bending and the unbending of the spring steel plate at the tail end, can close and open the traction tong heads; and under the magnetic actions of the in-vitro traction magnet and the traction block, traction on the pulmonary lobe traction tongs is achieved. Through magnetic mediation between an in-vitro part and an in-vivo part of the instrument, pulmonary lobe traction can be achieved without additional chest wall incision, and a single chest wall operating hole can not be occupied, so that mutual interference of instruments is avoided; in another aspect, the instrument can flexibly adjust a pulmonary lobe traction angle through the connection of the traction block and the connecting lines and can adjust traction strength by adjusting the magnetic force of the in-vitro traction magnet, so that an operative field is fully exposed; therefore, the pair of the traction tongs is more beneficial for a surgical doctor to smoothly complete single-hole thoracoscope.

The invention relates to the technical field of medical instruments, in particular to an implantable electromagnetic pulsation type artificial heart blood pump which comprises a pump body and an electromagnetic driving device, the pump body is implanted into a body when used, and a soft first diaphragm is arranged in the pump body; the periphery of the first diaphragm is connected with the inner cavity wall of the pump body so as to divide the inner cavity of the pump body into a first cavity and a second cavity which are mutually sealed and isolated, the first cavity is an artificial heart cavity, and an inlet and an outlet for sucking and discharging blood are formed in the artificial heart cavity respectively; electromagnetic force serves as driving force to drive the first diaphragm to move in a reciprocating mode, then the blood discharging function of the artificial heart cavity is achieved, no other mechanical moving parts exist in the artificial heart cavity, blood cannot be damaged, no excessive mechanical moving parts occupy space, the space utilization rate of the pump body is very high, and the size can be very small and exquisite; and the device can be implanted under a thoracoscope, is simple to operate and is easily accepted by doctors and patients.

The embodiment of the invention discloses a method and device for detecting and locating a lesion in video-assisted thoracoscopy surgery. The method includes the steps that a locating wire with a locating sensor and an extension catheter together enter the area where the lesion is located; the location information of the lesion is detected through the locating sensor of the locating wire; the anchoring position of an anchoring tong is determined according to the length of the locating wire entering, and the extension catheter is fixed and supported at the anchoring position (the lesion position) through the anchoring tong; after a lung collapses in the process of surgery, the locating wire is controlled through the extension catheter to enter the lesion portion again, and the lesion is located through the locating sensor of the locating wire and an external detector used for detecting the position and the direction of the locating sensor. The method can locate the lesion location in real time, the location is more efficient and more accurate, and the problem of the difficulty in locating the lesion in VATS is solved.

The invention discloses a fixing device for a thoracoscope. The device comprises a clamping plate, a lifting pin, a sliding mechanism, a first driving mechanism, a U-shaped rod, a second driving mechanism and a fixing mechanism; according to the fixing device, the thoracoscope can be stably fixed, besides, the device is used by medical staff, the stably fixed thoracoscope can be subjected to up-and-down and left-and-right position adjustment treatment at an examination part of a patient, and therefore, medical staff can conveniently use the thoracoscope after the thoracoscope is stably fixed.According to the fixing device, the position of the thoracoscope can be fixed, the fixed thoracoscope can be adjusted up and down and left and right, in addition, the influence of vibration generatedin the heartbeat and lung expansion process of the patient on a lens of the thoracoscope can be avoided, and the stability of a picture shot by the lens is ensured.

Provided is a thoracic cavity simulator that, for the purpose of training or education in thoracic cavity microscopic surgery, faithfully reproduces the shape and feel of a human body and that can simulate a surgical environment for a human body that has multiple constraints. A device that comprises a model human skeleton that simulates at least ribs, and comprises a casing that houses the model human skeleton, the device being configured such that an opening is provided to a rib section of the casing, such that a diaphragm section can be opened and closed, and such that model organs can be housed inside the ribs of the model human skeleton. The shapes / structures and hardness / feel, etc. of the surfaces and interiors of the model organs inside the ribs of the model human skeleton are made to approximate a human body. The casing may have a hardness / feel, etc. that approximates a human body or may be a hard resin. An opening is provided to the rib section of the casing, and forceps used for thoracic cavity microscopic surgery are inserted inside the ribs through gaps between rib bones. The diaphragm section is configured so as to be removable and / or openable and closable, and the model organs housed inside the ribs of the model human skeleton are replaced.

The invention belongs to the technical field of medical instruments, and discloses a stitching instrument for thoracoscope minimally invasive surgery and a control system. A supporting block is weldedto the right end of a sleeve, a groove is formed in the supporting block, and a pressure sensor is fixed to the bottom of the groove through a screw; a rotating rod is fixed to the sleeve through a ferrule, a hook is welded to the right end of the rotating rod, and a screwing handle is welded to the left end of the rotating rod; and a swing rod is fixed to the sleeve through a rotating shaft, a stirring handle is welded to the left end of the swing rod, a suture needle is welded to the right end of the swing rod, and a suture clamping groove is formed in the suture needle. A fixed supportingrod is welded to the left end of the sleeve, a thread inlet groove is formed in the inner side of the sleeve, and the thread inlet groove sleeves a sewing thread. The shifting handle is provided witha telescopic outer cylinder, and an anti-skid pad is adhered to the outer side of the telescopic outer cylinder; the telescopic outer cylinder is connected with a fixing bolt in a screwed mode, the fixing bolt makes hard contact with a telescopic inner rod, and the telescopic inner rod is sleeved in the telescopic outer cylinder. According to the invention, the suture needle can be ensured to penetrate through human tissues for suture, operation safety is improved, and the suture time can be shortened.

The invention discloses a multi-angle reflector for a chest operation, belonging to the technical field of medical surgical equipment, in particular to a lighting apparatus for a chest operation. The multi-angle reflector is characterized in that a mirror surface is fixed on a support leg parallel with the mirror surface; the support leg is inserted into a mirror handle in a movable fit mode; the end part of the mirror handle is a round hole for fixing a handle; one end of the handle is connected with a ball which is rotatably embedded into a hole of a support plate; and one end of the ball extends to form a section of screw which is sleeved in the round hole of the handle and fixedly inserted into the mirror handle through a butterfly nut in a movable fit mode. The invention has the following positive effects: an operator can indirectly see the chest wall and the part which cannot be seen directly before in the chest due to the reflecting action of the mirror, thereby ensuring that the operator can finish the surgical operations such as separating adhesion, stopping bleeding and the like in a relatively small cut. Through the invention, convenience is provided for doctors to perform operations, the wound caused by increasing cut is avoided, the assistance of a thoracoscope is saved, the operation expenses are reduced while the pain of the patients is eased, and a practical tool is added for chest surgery.