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171. 发明授权

US10188501B2 Fork-type covered stent 有权
公开(公告)号：US10188501B2
公开(公告)日：2019-01-29
申请号：US15320901
申请日：2015-06-19
申请人： Lifetech Scientific (Shenzhen) Co., Ltd.
发明人： Yongsheng Wang , Caiping Liu , Deyuan Zhang , Wei Guo
IPC分类号： A61F2/07 , A61F2/06 , A61F2/856 , A61F2/915 , A61F2/82 , A61F2/89
摘要： A bifurcated stem graft (10) comprises a body (100) and a side branch (200) that forms an acute angle with the body (100). The side branch (200) comprises a covering film (220) and a first bare stent (240) only disposed on the covering film (220). Part of the first bare stent (240) is positioned adjacent a boundary line (230) of the body (100) and the covering film (220) and is located in a vertex angle area (250) of the acute angle. Due to the fact that part of the first bare stem (240) is attached to the vertex angle area (250), after the stem (10) is released, the self-expanded part of the first bare stent (240) enables the vertex angle area (250) of the side branch (200) to be effectively supported, the covering film is not prone to shrinkage, and a leading wire can enter easily. Meanwhile, a special bare stent attached to the vertex angle area (250) does not need to be additionally disposed on the first bare stent (240), and thus the technology for preparing the bare stem is simplified; furthermore, the first bare stent (240) is only disposed on the side branch (200) and does not need to span the connecting part of the body (100) and the side branch (200), and thus the waveform can be shaped easily.

172. 发明申请

US20190000606A1 LUMEN STENT 审中-公开
公开(公告)号：US20190000606A1
公开(公告)日：2019-01-03
申请号：US16067323
申请日：2016-12-23
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Chang SHU , Benhao XIAO , Deyuan ZHANG
IPC分类号： A61F2/07 , A61F2/97
CPC分类号： A61F2/07 , A61F2/848 , A61F2/852 , A61F2/89 , A61F2/97 , A61F2002/061 , A61F2002/065 , A61F2002/077 , A61F2002/8486 , A61F2210/0076 , A61F2220/005 , A61F2220/0058 , A61F2220/0075 , A61F2250/0018 , A61F2250/0039 , A61F2250/0063 , A61F2250/0069
摘要： A lumen stent includes a first tube body and a second tube body. The second body is sleeved outside the first body and has at least one end in hermetic connection with the outer surface of the first body. The second body includes a thin film body that covers at least part of the first body and a second radial supporting structure that is disposed in a maximum radius-length region of the thin film body and surrounds the maximum radius-length region. The second radial supporting structure has radius supporting property. After the implantation of the lumen stent, a semi-enclosed gap can be formed between the first body and the second body, or a semi-enclosed gap can be formed between the second body and a tube wall, so that blood flowing into the gap can serve as a filling material and prevent blood from flowing into a tumor body.

173. 发明申请

US20190000484A1 OCCULUDER 审中-公开
公开(公告)号：US20190000484A1
公开(公告)日：2019-01-03
申请号：US16060236
申请日：2016-06-15
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Shaochun ZHUANG , Wenjun CHEN
IPC分类号： A61B17/12
摘要： An occluder includes a first occluder disc, a second occluder disc, a waist portion connecting the first occluder disc and the second occluder disc, and at least one soft and fibrous strand bundle structure. The strand bundle structure is disposed on at least one of a disc surface of the first occluder disc and a disc surface of the second occluder disc, the two disc surfaces faces each other, and the strand bundle structure is disposed near the waist portion. By disposing the strand bundle structure to be immediately adjacent to the waist portion, a defect opening can be occluded after implantation, thereby effectively blocking blood from flowing from one side of the defect to the other side thereof, and preventing a shunt from being formed.

174. 发明申请

US20180369006A1 Delivery System and Lumen Stent System 审中-公开
公开(公告)号：US20180369006A1
公开(公告)日：2018-12-27
申请号：US16063270
申请日：2016-06-14
申请人： Lifetech Scientific (Shenzhen) Co., Ltd.
发明人： Junqiang ZHANG , Gang WANG , Chengmei GUAN
IPC分类号： A61F2/966
摘要： A delivery system (200) for delivering a lumen stent (100). The delivery system (200) comprises a fixing anchor (270) and a fixing cap (260) which is cylindrical and has an opening at a proximal end, the fixing anchor (270) comprising a hollow insertion part (271) and an abutment part (273) connected to the insertion part (271); parts of the side surface of the insertion part (271) are recessed towards the interior of the insertion part (271) to form a plurality of positioning grooves (2711) that extend to a proximal end surface of the insertion part (271), a separator (2713) being formed between every adjacent two positioning grooves (2711); the abutment part (273) comprises a carrier (2731) and a plurality of first position-limiting pieces (2733) provided on a side of the carrier (2731), a distal end of each first position-limiting piece (2733) being provided to correspond to an open side of a positioning groove (2711) adjacent to the abutment part (273); distal end surfaces of the plurality of first position-limiting pieces (2733), a distal end surface of the carrier (2731) and proximal end surfaces of the separators (2713) are coplanar. When the fixing anchor (270) and the fixing cap (260) are joined, the insertion part (271) is inserted into the fixing cap (260), and the distal end surfaces of the first position-limiting pieces (2733) abut the proximal end surface of the fixing cap (260). Further disclosed is a lumen stent system. The delivery system (200) can be smoothly and safely withdrawn out of the human body.

175. 发明申请

US20180360600A1 ARTIFICIAL HEART VALVE STENT, ARTIFICIAL HEART VALVE AND IMPLANTATION METHOD 审中-公开
公开(公告)号：US20180360600A1
公开(公告)日：2018-12-20
申请号：US15781944
申请日：2016-03-18
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Jian ZHUANG , Huiming GUO , Huanlei HUANG , Zhiwei WANG , Xiangdong LIU , Mingjuan FU , Wei JIANG , Deyuan ZHANG
IPC分类号： A61F2/24 , A61B17/04 , A61B17/06
摘要： An artificial heart valve stent including: a tubular stent body having an inflow side end and an outflow side end, the inflow side end and the outflow side end being opposite to each other; an inflow side skirt surrounding the external wall of the stent body; and an outflow side skirt surrounding the external wall of the stent body. In a spread state, free ends of the inflow side skirt and the outflow side skirt extend toward the inflow side end; and the inflow side skirt cooperates with the outflow side skirt to clamp heart valve tissues. The artificial heart valve stent can be steadily arranged on heart valve tissues, prolong the service life of an artificial heart valve and reduce the risk of another artificial heart valve replacement for the patient.

176. 发明申请

US20180333219A1 DEVELOPING STRUCTURE AND AN IMPLANTED MEDICAL INSTRUMENT HAVING DEVELOPING STRUCTURE 审中-公开
公开(公告)号：US20180333219A1
公开(公告)日：2018-11-22
申请号：US15778032
申请日：2016-06-14
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Wenjiao LIN , Li QIN
IPC分类号： A61B90/00 , A61F2/82 , A61L31/02 , A61L31/18
CPC分类号： A61B90/39 , A61B90/00 , A61B2090/3966 , A61F2/82 , A61F2210/0004 , A61F2250/0032 , A61F2250/0098 , A61L29/18 , A61L31/022 , A61L31/18
摘要： A radiopaque structure and an implanted medical instrument having the radiopaque structure. The radiopaque structure includes at least one radiopaque unit, and each radiopaque unit includes at least one radiopaque object. In at least one incidence direction of a light source, all the radiopaque objects in the radiopaque structure are divided into n regions according to the thickness in the incidence direction, and a projection area Sm of m regions of the n regions and an effective thickness dm of the m regions meet Sm−0.0136(dm)a≥0, wherein −0.95≤a≤−0.85 and 1≤m≤n. The radiopaque structure has good or excellent visibility.

177. 发明申请

US20180333157A1 Lung Volume Reduction Elastic Implant and Lung Volume Reduction Instrument 审中-公开
公开(公告)号：US20180333157A1
公开(公告)日：2018-11-22
申请号：US15776050
申请日：2016-06-29
申请人： Lifetech Scientific (Shenzhen) Co., Ltd.
发明人： Anning LI , Siyi LI
IPC分类号： A61B17/12 , A61B90/00
摘要： Disclosed are a lung volume reduction elastic implant and a lung volume reduction device, wherein the lung volume reduction elastic implant (500) is tubular and at least opens at the proximal end thereof, and comprises an elastic deformation section (51), a flexible guide section (53) connected to the distal end of the elastic deformation section (51), and a protuberance (571) connected to the proximal end of the elastic deformation section (51), wherein the elastic deformation section (51) has shape memory characteristics and has several grooves (514) arranged at intervals along the length direction, each groove (514) connecting with the lumen of the elastic deformation section (51). Under the same external force, the flexible guide section (53) deforms more easily than the elastic deformation section (51), the outer diameter of the protuberance (571) is larger than the outer diameter of the elastic implant (500) in the delivery state when same is close to the protuberance (571), and the device delivers the implant without a delivery sheath, thereby preventing the delivery sheath from causing damage to the inner wall of the bronchus and reducing the incidence of pneumothorax.

178. 发明申请

US20180326127A1 IRON-BASED ALLOY ABSORBABLE AND IMPLANTABLE MEDICAL DEVICE FOR INTERNAL FIXATION 审中-公开
公开(公告)号：US20180326127A1
公开(公告)日：2018-11-15
申请号：US15775137
申请日：2016-06-27
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Wenjiao LIN , Deyuan ZHANG
IPC分类号： A61L31/14 , A61L31/02 , A61L31/06
CPC分类号： A61L31/148 , A61L27/042 , A61L31/02 , A61L31/022 , A61L31/06 , A61L31/14
摘要： An iron-based alloy absorbable and implantable medical device for internal fixation. A substrate includes an iron-based alloy and degradable polymer. The mass ratio of the iron-based alloy to the degradable polymer is between 1:4 and 4:1. The weight-average molecular weight of the degradable polymer is between 150000 to 3000000, and the polydispersity index thereof is between 1 and 6. The device further includes antioxidants. The iron-based alloy is used as a load-bearing framework or reinforcement phase of the device. By adjusting the mass ratio of the iron-based alloy to the degradable polymer and the combination mode thereof, the corrosion rate of the iron-based alloy in the late period of the implantation is accelerated, and the quantity of corrosion products poorly soluble in the iron-based alloy is reduced. Adding antioxidants to the device further reduces the quantity of the corrosion products poorly soluble in the iron-based alloy.

179. 发明申请

US20180303971A1 Absorbable Iron-Based Alloy Medical Instrument Implant and Manufacturing Method 审中-公开
公开(公告)号：US20180303971A1
公开(公告)日：2018-10-25
申请号：US15767610
申请日：2016-06-07
申请人： Lifetech Scientific (Shenzhen) Co., Ltd.
发明人： Haiping QI , Ziqiang LIU , Li QIN , Deyuan ZHANG , Wenjiao LIN
IPC分类号： A61L27/04 , A61L27/18 , A61L27/40 , A61L27/54 , A61L27/58
CPC分类号： A61L27/042 , A61L27/18 , A61L27/34 , A61L27/40 , A61L27/50 , A61L27/54 , A61L27/58 , A61L31/022 , A61L31/10 , A61L31/12 , A61L31/14 , A61L31/148 , A61L31/16 , A61L2300/404 , A61L2300/416 , A61L2300/42 , A61L2300/424 , A61L2400/18 , C08L67/04
摘要： Absorbable iron-based alloy implanted medical device and manufacturing method thereof. The iron-based alloy implanted medical device comprises an iron-based alloy substrate (11), a degradable polymer layer (13) disposed on a surface of the iron-based alloy substrate (11), and a tannic acid chemical conversion film (12) disposed on a surface of the iron-based alloy substrate (11). After the medical device is implanted into a body, the tannic acid chemical conversion film (12) is configured to protect the iron-based alloy substrate (11) coated thereby from being in contact with a body fluid, thereby ensuring that the device meets a clinical mechanical property requirement in the early stage of implantation. Furthermore, the iron-based alloy implanted medical device has a decreased size, and produces a decreased amount of a corrosive product after being implanted, facilitating faster absorption or elimination of the corrosive product.

180. 发明申请

US20180271538A1 LEFT ATRIAL APPENDAGE OCCLUDER 审中-公开
公开(公告)号：US20180271538A1
公开(公告)日：2018-09-27
申请号：US15763203
申请日：2016-08-01
申请人： LIFETECH SCIENTIFIC (SHENZHEN ) CO., LTD
发明人： Anning LI
IPC分类号： A61B17/12
CPC分类号： A61B17/12122 , A61B17/12 , A61B17/12031 , A61B17/12172 , A61B2017/00477 , A61B2017/00862 , A61B2017/00867
摘要： A left atrial appendage occluder includes a sealing plate, a fixing plate, and a connection member connecting the sealing plate and the fixing plate. The connection member is a silk woven structure. A radial deformability of the sealing plate is greater than a radial deformability of the fixing plate, and/or an axial deformability of the sealing plate is greater than an axial deformability of the fixing plate. In the left atrial appendage occluder, the fixing plate and the sealing plate are connected via the connection member of the silk woven structure, such that a distance between the fixing plate and the sealing plate and an angle formed thereby are both adjustable to adapt to a left atrial appendage having a large bending angle or requiring the fixing plate to remain at an increased distance to the sealing plate, thereby reducing the risk of failed occlusion.

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