39 results about "Open thoracotomy" patented technology

A method for reducing left ventricular volume, which comprises identifying infarcted tissue during open chest surgery; reducing left ventricle volume while preserving the ventricular apex; and realigning the ventricular apex, such that the realigning step comprises closing the lower or apical portion of said ventricle to achieve appropriate functional contractile geometry of said ventricle in a dyskinetic ventricle of a heart.

The invention discloses a covered stent for an aortic dissection surgery, a delivery device and a use method thereof. The stent comprises a main body, wherein the main body decreases progressively from the heart near end with a large diameter to a far end with a small diameter, and the superior border of the middle piece of the main body is a rotary island; a tectorial membrane is arranged except the rotary island, and the two ends of the main body and the rotary island are provided with positioning marks. The delivery device comprises a delivery sheathing canal, a suture and a traction guide wire, wherein the suture is sewn on the outer side surface of the covered stent, and the two side edges of the covered stent at the near end of the left subclavian artery are sewn up by the suture; the stent is closed up to be in a semi-contraction state by the traction guide wire through the suture, and the covered stent is closed up and wrapped in the delivery sheathing canal; the delivery sheathing canal is provided with a steeple, and the far end of the traction guide wire penetrates through the handle of the delivery sheathing canal and is fixed. The covered stent for the aortic dissection surgery is used for a dissecting aneurysm surgery of the lesser curvature side of aortic arch and an interventional minimally invasive surgery of an aortic dissection near the brachiocephalic trunk, so that the trauma of a thoracotomy is avoided, and the athe lumen crevasse occlusion is directly implemented.

The invention discloses a congenital heart disease surgical saccule dilating catheter special for children. The heart disease surgical saccule dilating catheter special for children comprises a wire guide port, a water injection port, a fixed sleeve, an outer catheter, an inner catheter, a saccule and a guide wire; the rear end of the saccule is fixed on the outer wall of the front end of the outer catheter; the front end of the saccule is fixed on the outer wall of the front end of the inner catheter; a cavity which is formed by the inner catheter and the outer catheter is communicated with the water injection port; the guide wire is inserted into the inner catheter; the saccule is a small saccule which has a shape of a waist drum and of which the middle part is thick and two heads are thin; the total length of the saccule is 15 to 20mm; the diameter of each of two ends of the saccule is 15 to 20mm; the diameter of each of two heads of the saccule is 8 to 20mm; and the diameter of the middle part of the saccule is 2 / 3 to 4 / 5 the diameter of each of the two heads. The diameter of the middle part of the saccule is smaller than that of each of two heads, so the saccule can be accurately positioned on the narrow part of an artery and does not slip; the outer catheter is provided with scale marks to ensure accurate positioning; the chance that a patient suffering from pulmonary stenosis is damaged when the saccule is dilated can be obviously reduced, and safety of straight open thoracotomy is higher. The blank of the saccule dilating catheter special for the children at present is filled.

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.

Incompetency or regurgitation of a cardiac valve is treated by injecting a space occupying material or implanting a space occupying device within a papillary muscle or in heart tissue near a papillary muscle to cause lengthening or repositioning of the papillary muscle in a manner that improves coaptation of the valve leaflets and lessens valvular incompetency or regurgitation. The procedure may be performed by open thoracotomy, thoracoscopically, by a tran-endocardial catheter based approach or by a trans-coronary catheter based approach.

Incompetency or regurgitation of a cardiac valve is treated by injecting a space occupying material(s) or implanting a space occupying device(s) at an interstitial location adjacent to the valve such that the space occupying material or device exerts pressure on the valve causing one or more leaflets of the valve to be favorably repositioned. The procedure may be performed by open thoracotomy, thorascopically or transluminally using a tissue penetrating catheter.

The embodiment of the invention discloses a heart bioprosthetic valve with a valve leaflet capable of being repeatedly replaced through a minimally invasive surgery. The heart bioprosthetic valve comprises a valve support (1) and the replaceable valve leaflet (2), wherein the valve support (1) is used for being sewed with the tissue, and the valve support (1) and the replaceable valve leaflet (2) are in tight connection through a clamping groove (3) and a sealing groove (4) in the valve support (1). When the heart bioprosthetic valve is implanted in a patient through a thoracic surgery, the function of the valve leaflet degenerates, and the heart bioprosthetic valve is required to be replaced, through the minimally invasive surgery, a conveying device with a new valve leaflet can be guided by a visualization device to take down the damaged valve leaflet by a valve leaflet removing device of the conveying device, meanwhile, the new valve leaflet is expanded to be installed on the valve support to complete replacement of the valve leaflet, the damaged valve leaflet can be compressed to be installed in the conveying device which is pulled out of the human body, and replacement of the heart bioprosthetic valve is finished. According to the heart bioprosthetic valve, the risk of huge traumas caused by the fact that the thoracic surgery is required to be carried out on the patient again to replace the heart bioprosthetic valve due to the reason of the service life after the heart bioprosthetic valve is implanted in the human body is reduced.

The invention relates to an integrated thoracic aortic branch support which comprises a main support and a first branch support arranged on the sidewall of the main support, wherein the main support is communicated with the first branch support; the main support and the first branch support are composed of memory alloy wire frames and tectorial membranes fixedly coating the frames. The first branch support is arranged on the main support, a most important branch artery channel is reserved when the important arteries are coated, so as to enable the thoracic aortic support to achieve the left side of the right brachiocephalic trunk opening, the first branch support carried by the main support is placed in the left common carotid artery, or conducting bridging to the right common carotid artery and the left common carotid artery, and conducting bridging to the left common carotid artery and the left subclavian artery firstly and then covering all the arcus aortas by the support, the first support is placed in the right brachiocephalic trunk, so that the support can also be used for lesion near the aortic arch, exaggerated thoracic surgery is avoided, and the surgical risk and medical cost of a patient are decreased accordingly.

The invention provides a double-sleeve tracheal intubation device for a rat. The double-sleeve tracheal intubation device comprises an outer-layer sleeve, an inner-layer sleeve and a guide steel wire. The outer-layer sleeve is used as an oral cavity opening pipe, is nested on the outer layer of the inner-layer sleeve, and comprises an opening end extending into an oral cavity and a holding end arranged on the outer side; the front end of the opening end is an inclined face, the included angle between the tail end of the opening end and the holding end is 100-120 degrees, and the thickness of the connecting position is 2-2.5 mm. The inner sleeve serves as a breathing tube, the front end of the inner sleeve has a certain angle and a passivated corner, and the tail end of the inner sleeve is provided with a breathing machine connecting mechanism; the guide steel wire is longer than the inner sleeve. The tracheal intubation assembly can effectively achieve rapid intubation, does not need a tracheotomy operation, and avoids complex surgical operation and extra damage to a rat. The use result shows that the method is small in damage to rats, stable, reliable and high in success rate, additional damage caused by exposure of multiple wounds in thoracotomy is avoided, secondary or multiple thoracotomy is facilitated, and the survival rate of animals is increased.

The invention discloses a post-operation absorbable anti-adhesion material for cardiac surgery and a film prepared from the material. The material is prepared from the following ingredients in parts by weight: 45 to 85 parts of chitosan, 5 to 25 parts of gelatin, 5 to 15 parts of glycerol, 5 to 20 parts of collagen and 5 to 20 parts of silk fibroin. A preparation method of an isolation film comprises the following steps of preparing 90 kg of 15-weight-percent chitosan mixed solution; preparing 50 kg of silk fibroin stock solution with the concentration being 10 to 25 percent; mixing the mixedsolution and the silk fibroin stock solution to the concentration being 10 to 20 weight percent by an acetic acid solution with the concentration being 2 to 15 weight percent; performing filtering; performing still standing for 5 to 24 hours; performing defoaming; after the defoaming, putting the materials into a baking oven being 40 to 70 DEG C for drying, thus obtaining the film. The anti-adhesion film prepared by the method is used for the cardiac surgery, has good biocompatibility, is absorbable and degradable, and can prevent the heart and peripheral tissue adhesion after the surgery, protect the heart function, and avoid secondary thoracotomy difficulty increase and occurrence of complications such as hemorrhea caused by adhesion.

A thoracic structure access system for retracting biological tissue and providing access to internal biological structures; particularly, intrathoracic structures, e.g., the heart and internal mammary arteries, to facilitate entry through the biological tissue with surgical instruments and interaction of the surgical instruments with the intrathoracic structures during a thoracic surgical procedure; particularly, minimally invasive CAGB and OPCAB procedures. The system facilitates coronary artery bypass graft (CAGB and OPCAB) procedures via a simple incision at a transxiphoid incision site and, hence, without fully transecting the sternum, i.e., performing a full sternotomy, or performing a thoracotomy. The system includes modular retractor and retention arm assemblies in communication with a ratchet assembly. When the system is disposed proximate a transxiphoid incision site and the modular retractor and retention arm assemblies are releasably engaged to opposing biological tissue portions at the transxiphoid incision site, the ratchet assembly can be actuated to apply opposing forces to the biological tissue portions to provide an access space at the transxiphoid incision site.

A pulmonary artery (PA) via trans-septal to left atrial (LA) percutaneous dual lumen cannulation system which reduce the pressure of the right ventricle provides drainage of pulmonary artery blood with bypassing the lung while return the blood to the Left Atrium (LA) without the need for thoracotomy for a wearable pump less extra corporeal lung assist (pECLA) to remove CO2, pump less extra corporeal membrane oxygenation (ECMO), para-corporeal pump driven CO2 removal, extra corporeal CO2 removal (ECCO2R) pump driven, para-corporeal pump driven membrane oxygenation, or extra corporeal membrane oxygenation (ECMO) with extra-corporeal pump. By establishing percutaneously a shunt with a dual lumen cannula between PA and LA using the PA-LA pressure gradient as the driving force for the blood flow through the drainage lumen, CO2 removal device, or oxygenator and return cannula lumen in the vascular system.

The invention provides a recyclable ventricular isolation device, a recovery system and system. The ventricular isolation device comprises a device body and an isolator for isolating a ventricle, wherein the device body is provided with a storage cavity used for storing the isolator. A push head is contained in the storage cavity and connected with a push rod. A pop-up opening is formed in the end, opposite to the push head, of the storage cavity. The isolator comprises a recycling connector used for recycling the isolator, and a clamping groove is formed in the recycling connector. The clamping groove is formed in the recovery connector, so that the isolator is convenient to recover, and the risk that a thoracotomy operation needs to be performed is avoided.

The invention relates to the technical field of experimental animals, and in particular to a device for fixing whole body tissue by perfusion of an animal heart. The device for fixing the whole body tissue by perfusion of the animal heart comprises a pressure pump, a buffer bottle, a washing liquid bottle and a fixing liquid bottle; the pressure pump is connected with the air inlet end of the buffer bottle through an air guide pipe; the air inlet end of the washing liquid bottle and the air inlet end of the fixing liquid bottle are connected with the air outlet end of the buffer bottle separately through corresponding air supply pipes; and the air outlet end of the washing liquid bottle and the air outlet end of the fixing liquid bottle are connected with liquid outlet pipes. By using thedevice, animal whole body tissue cells can be quickly and efficiently fixed synchronously through animal anesthesia and animal thoracotomy; and meanwhile, more complete tissue proteins and nucleic acid molecules can be obtained simultaneously to provide high-quality experimental specimens for later experiments.

The invention relates to the technical field of medical instruments, in particular to a high-strength chest closing binding belt for thoracotomy. The high-strength chest closing binding belt comprises a binding belt head and a flexible belt body, which are mutually connected, wherein the binding belt head is of a U-shaped structure and comprises a bottom plate and two side plates; at least one pair of first locking teeth is symmetrically arranged on the inner walls of the two side plates; and a plurality of second locking teeth matched with the first locking teeth are symmetrically arranged on two sides of the flexible belt body. According to the high-strength chest closing binding belt for the thoracotomy, the binding belt head is of the U-shaped structure, the first locking teeth are symmetrically arranged on the inner walls of the two side plates, the second locking teeth matched with the first locking teeth are symmetrically arranged on two sides of the flexible belt body, the flexible belt body is pulled out of the binding belt head, and the second locking teeth on two sides of the flexible belt body are matched with the first locking teeth on two side plates of the belt head to achieve locking. After the high-strength chest closing binding belt is used for closing and fixing the sternum, no obvious protrusion exists, the discomfort of a patient can be remarkably reduced, the price is low, and the economic burden of the patient can be greatly relieved.

The invention discloses a left auricle suturing device for transfemoral vein approach interventional operation and application thereof, the left auricle suturing device is used for suturing a left auricle opening and preventing cerebral infarction caused by atrial fibrillation, and belongs to the technical field of minimally invasive intervention.The left auricle suturing device comprises a conveying sheath and an operating handle, the operating handle is connected with a conveying assembly, and the conveying sheath penetrates through the atrial septum through a femoral vein approach to reach the left auricle opening; the conveying assembly reaches the mouth of the left auricle through the conveying sheath and comprises a strip-shaped conveying piece, one end of the strip-shaped conveying piece is connected with the operating handle so that the conveying piece can be independently controlled to bend and stretch out and draw back through the operating handle, a suture wire is arranged in the conveying piece, the end of the suture wire is connected with a suture hook, and the suture hook is located at the end of the corresponding conveying piece. The left auricle mouth suture is completed without a thoracotomy, and no implant is left in the body after the suture material is degraded; the operation is carried out under real-time monitoring of ultrasound in the heart cavity, accurate operation of the operation can be achieved, and complications are reduced.

The invention relates to the technical field of nursing devices for post-operative wound hemostasis protection, in particular to a cardiac thoracotomy post-operative hemostasis protecting device for nursing. The device comprises a pressing hemostasis portion and a fixing protection vest, the pressing hemostasis portion comprises an air bag (1), a fixing plate (2), an inflation rubber ball (3), an inflation pipe (4), a deflation valve (5), an upper shoulder strap I (6), an upper shoulder strap II (7), a lower fixing strap I (8) and a lower fixing strap II (9), the inflation rubber ball (3) is arranged at one end of the inflation pipe (4), and the other end of the inflation pipe (4) is fittingly connected with an air inlet of the air bag (1). Defects of a method of clinically putting a sterile treatment towel on wound dressing of a patient and pressing, binding and fixing with chest straps are overcome, simplicity and convenience in wearing are achieved, pressurizing, fixing and hemostasis functions are realized while comfort of the patient is guaranteed, and rehabilitation treatment of patients subjected to thoracotomy is promoted.

The invention relates to the field of an atrial fibrillation animal model and a manufacturing method of the atrial fibrillation animal model, in particular to the atrial fibrillation animal model for implanting a pacemaker through an external jugular vein without X ray and the manufacturing method of the atrial fibrillation animal model. The atrial fibrillation animal model for implanting the pacemaker through the external jugular vein without the X ray is obtained by implanting the pacemaker and a spiral electrode through the external jugular vein without X ray perspective. The manufacturing method of the atrial fibrillation animal model for implanting the pacemaker through the external jugular vein without the X ray can be performed without an X ray perspective condition, so that the potential harm of the X ray to an operation operator is avoided, meanwhile, the damage to a blood vessel and a pericardium of an animal caused when the spiral electrode and the pacemaker are implanted by a thoracic surgery is avoided, the operation difficulty is reduced, an operation wound is reduced, various syndromes caused during the operation and after the operation by the thoracic surgery are avoided, the recovery time after the operation is shortened, and a powerful reference foundation for the establishment, study and application of the atrial fibrillation model is provided.

A pulmonary artery (PA) via trans-septal to left atrial (LA) percutaneous dual lumen cannulation system which reduce the pressure of the right ventricle provides drainage of pulmonary artery blood with bypassing the lung while return the blood to the Left Atrium (LA) without the need for thoracotomy for a wearable pump less extra corporeal lung assist (pECLA) to remove CO2, pump less extra corporeal membrane oxygenation (ECMO), para-corporeal pump driven CO2 removal, extra corporeal CO2 removal (ECCO2R) pump driven, para-corporeal pump driven membrane oxygenation, or extra corporeal membrane oxygenation (ECMO) with extra-corporeal pump. By establishing percutaneously a shunt with a dual lumen cannula between PA and LA using the PA-LA pressure gradient as the driving force for the blood flow through the drainage lumen, CO2 removal device, or oxygenator and return cannula lumen in the vascular system.

The present invention discloses a hemostatic fastener device with an inner lining plate. The hemostatic fastener device with the inner lining plate comprises hemostatic fasteners and an inner lining plate, and the inner lining plate is connected with the hemostatic fasteners and used for compression hemostasis of incisal edge bleeding points of wall layer pleura or periosteum at an inner side of asternal incision; a plurality of holes are arranged in the inner lining plate; each hemostatic fastener comprises a hemostatic fastener main body and a top end fastener; the hemostatic fastener mainbody is used for connecting the inner lining plate and the top end fastener and comprises a strip, a limiting device and a base seat, and the strip penetrates through the hole in the inner lining plate; the limiting device is arranged on the strip and matched with the top end fastener for limiting; the base seat is connected with the strips and positioned at bottom ends of the strips and used forfixing the hemostatic fastener main bodies and the inner lining plate; and the top end fasteners are matched with the limiting devices for limiting, and distances between the top end fasteners and thelining plate are adjusted to enable the lining plate to be in contact with the wall layer pleura or periosteum in a fitting mode. The device is firm in structure, flexible in operation, relatively good in adaptability, also safe and economical, effectively presses the incisal edge bleeding points of the wall layer pleura or periosteum at the inner side for hemostasis and reduces risks of secondary open chest operations.

The invention relates to the field of medical instruments, in particular to an implant and an assembly for forming the implant, the implant comprises an artificial chordae tendineae and a papillary muscle anchoring element, the artificial chordae tendineae comprises an artificial chordae tendineae body and a self-tightening structure formed at one end of the artificial chordae tendineae body and used for anchoring valve leaflet, and the other end of the artificial chordae tendineae body is connected with the papillary muscle anchoring element. According to the implant, the valve leaflet fixing mode of an artificial chordae tendineae prosthesis is optimized, fixation of the artificial chordae tendineae and the valve leaflet can be completed through an interventional operation, thoracotomy is not needed, operation trauma is small, and patient recovery is fast. A self-tightening thread knot does not shift, friction between the thread knot and the valve leaflet is reduced, the anchoring wound surface is small, damage to the original valve leaflet is small, the anchoring effect is good, and the backflow treatment effect is stable; meanwhile, rapid endothelialization of the implant is facilitated, the endothelialization effect is better, and the anatomical morphology of the valve leaflet cannot be changed.

The invention relates to the technical field of medical apparatus and instruments, in particular to a simple chest closing binding belt for thoracotomy, which comprises a binding belt head and a flexible belt body which are connected with each other; the binding belt head is sequentially provided with a locking groove, a transition groove and a containing groove from one end far away from the flexible belt body to one end close to the flexible belt body; the locking groove comprises a long groove and a short groove which form a convex shape; the long groove is close to the flexible belt body; a plurality of evenly-distributed locking teeth are symmetrically arranged on the two sides of the flexible belt body; the flexible belt body firstly penetrates out of the long groove, so that the locking teeth on the two sides are clamped on the two short edges of the short groove respectively; then the flexible belt body penetrates into the transition groove and penetrates out of the containing groove; and therefore, the end of the flexible belt body is placed in the containing groove. According to the chest closing binding belt disclosed by the invention, after the flexible belt body penetrates through the long groove, the flexible belt body is directly matched and locked with the short groove through the locking teeth; the thickness of the binding belt head is greatly reduced; the redundant flexible belt body can be placed in the containing groove; the binding belt is neat and stable; the discomfort of a patient can be remarkably reduced through the chest closing binding belt; the cost is low; and economic burden of patients can be relieved.

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.

The invention provides a ventricular auxiliary blood pumping instrument and system, and relates to the technical field of medical instruments.The ventricular auxiliary blood pumping instrument comprises an in-vivo assembly, and the in-vivo assembly comprises a supporting cover and an impeller mechanism; the in-vivo assembly has a folded state and an unfolded state, when the in-vivo assembly is arranged at the connecting position of the aorta and the left ventricle or in the left ventricle, the in-vivo assembly is set to be in the unfolded state, the covering film and the supporting cover form a blood flowing channel, the impeller mechanism rotates to promote the pressure of blood in the blood flowing channel to be increased, and then the in-vivo assembly can be used as a blood pump. Promoting blood in the left ventricle to flow to the aorta; meanwhile, the in-vivo assembly has a folded state, in the folded state, the impeller mechanism and the supporting cover are folded, the size is small, the in-vivo assembly can be implanted into the connecting position of the aorta and the left ventricle or in the left ventricle through a catheter, thoracotomy is not needed, the operation time is short, trauma is small, and patient recovery is fast.

A recoverable plugging device for treating the congenital heart disease is disclosed in the invention, and comprises a first umbrella-shaped net, a flow blocking pipe and a second umbrella-shaped net which are sequentially connected, a first plugging end is fixed to the middle of the outer side of the first umbrella-shaped net, and a second plugging end is fixed to the middle of the outer side of the second umbrella-shaped net; a connecting rod is arranged in the inner cavity of the first umbrella-shaped net and rotationally connected with the first plugging end, the other end of the connecting rod is detachably connected with a pushing rod, the diameter of the connecting rod is the same as that of the pushing rod, and the tail end of the pushing rod sequentially penetrates through the flow blocking pipe and the second plugging end; the outer side of the pushing rod is sleeved with a connecting tube, and one end of the connecting tube is detachably connected with the second plugging end; and a limiting piece is fixed to the end, away from the second umbrella-shaped net, of the second plugging end, a positioning groove is formed in the end, away from the first plugging end, of the connecting rod, and the limiting piece is matched with the positioning groove. The plugging device is stable in structure, good in locking effect and capable of being prevented from falling off; and the plugging device can be recycled under the condition that a thoracotomy operation is not carried out.