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161. 发明申请

US20210030535A1 HEART VALVE PROSTHESIS 有权
公开(公告)号：US20210030535A1
公开(公告)日：2021-02-04
申请号：US16645062
申请日：2018-09-25
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Xiangdong LIU
IPC分类号： A61F2/24
摘要： A heart valve prosthesis, including a valved stent and valve leaflets, where the valve leaflets are accommodated in the valved stent, at least two valve leaflets are provided and centrosymmetrically distributed along the circumferential direction of an inner surface of the valve leaflet stent, one ends of each of two adjacent valve leaflets are combined together on the valve leaflet stent to form a valve corner, the valved stent is provided with a positioning member, and the projections of a perpendicular line of one of the valve corners to the axis of the valved stent and a perpendicular line of the positioning member to the axis of the valved stent are coincident on a plane perpendicular to the axis of the valved stent. The heart valve prosthesis can considerably reduce regurgitation at the center.

162. 发明授权

US10813756B2 Delivery device 有权
公开(公告)号：US10813756B2
公开(公告)日：2020-10-27
申请号：US16311282
申请日：2017-05-10
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Bin Yao , Xiangdong Liu
IPC分类号： A61F2/95 , A61F2/24
摘要： A delivery device used for delivering a heart valve, a blood vessel stent, and the like. The device includes a first stopper and a connecting unit. The connecting unit is provided opposite to the first stopper and can move relative to the first stopper. The connecting unit includes an axial connecting portion and at least two axial shafts. The axial shaft is connected to the connecting portion and faces the first stopper. The connecting unit is used to form, together with the first stopper, an enclosed and locked space.

163. 发明授权

US10813646B2 Left atrial appendage occluder 有权
公开(公告)号：US10813646B2
公开(公告)日：2020-10-27
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 , A61B17/00
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.

164. 发明申请

US20200315769A1 FILTER 审中-公开
公开(公告)号：US20200315769A1
公开(公告)日：2020-10-08
申请号：US16956782
申请日：2018-12-05
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Xiaole JIA , Huiqiang TANG , Anning LI
IPC分类号： A61F2/01
摘要： A filter, including a main body part. The main body part includes a heart-proximal end, a plurality of connecting segments, and a first filter mesh connecting between the heart-proximal end and the plurality of connecting segments. An end of the connecting segments that is connected to the first filter mesh is bent towards a central longitudinal axis of the filter to form a bending part. A vertical distance between a proximal end of the bending part and the central longitudinal axis of the filter is less than a vertical distance between a distal end of the bending part and the central longitudinal axis of the filter.

165. 发明申请

US20200289297A1 STENT AND PREPARATION METHOD THEREFOR 审中-公开
公开(公告)号：US20200289297A1
公开(公告)日：2020-09-17
申请号：US16768286
申请日：2018-10-17
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Li QIN , Wenjiao LIN
IPC分类号： A61F2/82
摘要： A stent and a preparation method therefor. The stent includes a stent substrate. The stent substrate is provided with at least one radiopaque structure thereon. Each radiopaque structure includes at least one radiopaque unit. A radiopaque material is inlaid in each radiopaque unit, and a ratio of the volume of the radiopaque material to the volume of the radiopaque unit ranges from 1.1 to 1.4. By the stent and the preparation method therefor, the interference fit between the radiopaque material and the radiopaque unit can be better implemented, so that the radiopaque material and the radiopaque unit have strong bonding force therebetween, and the problem of embolism caused by the drop of a radiopaque material is avoided.

166. 发明授权

US10751061B2 Pushing apparatus and delivery system 有权
公开(公告)号：US10751061B2
公开(公告)日：2020-08-25
申请号：US15777317
申请日：2016-04-29
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Wei Jiang , Gang Wang , Renmei Ma
IPC分类号： A61B17/12 , A61M39/06 , A61B17/00
摘要： A pushing apparatus and conveying system for an interventional medical instrument. By covering a thermoplastic elastomer on the surface of a steel cable to form an overlay film, steel cable support is improved when guaranteeing the flexibility thereof so that it is difficult for the instrument to deviate from a predetermined position when conveying the instrument, the operation time is shortened, and the operation risk of patients is reduced. Meanwhile, in the conveying system, a sealing member is provided in an inner cavity of a hemostasis valve body to match the overlay film of the steel cable so that the distal end of the hemostasis valve body is isolated from the outside, and the release effect of the instrument can be assessed by radiography before the instrument is released from the steel cable in operation, thereby effectively reducing harm to patients.

167. 发明授权

US10743980B2 Lumen woven support 有权
公开(公告)号：US10743980B2
公开(公告)日：2020-08-18
申请号：US15770594
申请日：2016-06-08
申请人： Lifetech Scientific (Shenzhen) Co., Ltd.
发明人： Benhao Xiao , Qin Wang
IPC分类号： A61F2/07 , A61F2/90 , A61F2/82
摘要： A lumen woven support (100), comprising a netted tube body (10) woven by weaving filaments (1), wherein the netted tube body (10) comprises a first portion (110) and a second portion (120) along an axial direction; the netted tube body (10) further comprises a plurality of first hooked and wound knots (140), at least two weaving filaments (1) from one end of the second portion (120) are hooked and wound to each other in the axial direction of the netted tube body (10) to form a first hooked and wound knot (140) and are then separated, and all the weaving filaments (1) constituting the first hooked and wound knots (140) are woven to form the first portion (110); and the mesh density of the first portion (110) is smaller than that of the second portion (120). In the above-mentioned lumen woven support (100), since the mesh density of the first portion (110) is smaller than that of the second portion (120), the radial supporting force of the first portion (110) is reduced, and the stimulation to a normal lumen wall caused by the first portion (110) is reduced, thereby lowering a risk of restenosis. In addition, the first portion (110) has a good flexibility, the second portion (120) has a greater radial supporting force so as to provide sufficient anchoring, and therefore, the above-mentioned lumen woven support (100) is applicable to practical implantation.

168. 发明申请

US20200222034A1 Occluder Pushing Device and Transport System 审中-公开
公开(公告)号：US20200222034A1
公开(公告)日：2020-07-16
申请号：US16629112
申请日：2018-07-09
申请人： Lifetech Scientific (Shenzhen) Co., Ltd.
发明人： Xiangdong Liu , Xianmiao Chen , Mingjuan Fu
IPC分类号： A61B17/00 , A61B17/12
摘要： The present disclosure relates to an occluder pushing device and an occluder delivery system, wherein the pushing device includes a pushing component and a handle. The pushing component includes a pushing tube and a traction element slidably inserted into the pushing tube. The handle is fixedly connected to a proximal end of the pushing tube and internally provided with a moving component and a locking component. The moving component includes a translation mechanism and a rotation mechanism, where the translation mechanism is used to drive the traction element to move axially inside the pushing tube, and the rotation mechanism is used to drive the traction element to rotate axially inside the pushing tube. The locking component is used to lock relative positions of the traction element and the pushing tube, and the rotation mechanism includes a locking structure for locking or releasing linkage between the rotation mechanism and the traction element. The pushing device of the present invention has provided therein the locking component for locking the traction element and the pushing tube in relative positions, such that when the pushing tube pushes the occluder, the relative positions of the traction element and the pushing tube lock the occluder in a folded state, thereby preventing the occluder from being prematurely released before reaching a pre-determined position.

169. 发明申请

US20200206004A1 ABSORBABLE STENT 审中-公开
公开(公告)号：US20200206004A1
公开(公告)日：2020-07-02
申请号：US16474226
申请日：2017-12-19
申请人： LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD
发明人： Wenjiao LIN , Wenchao FU
IPC分类号： A61F2/915
摘要： An absorbable stent includes an absorbable matrix. The matrix includes a number of wave-shaped rings connected by connection units and arranged in an axial direction. The wave-shaped ring includes a number of waves arranged in a circumferential direction. A peak, a valley and a support connecting the peak and the valley form the wave. Two adjacent wave-shaped rings and the connection unit form a closed side supporting unit. The matrix has a volume of [4, 40] μm per unit blood vessel area. The absorbable stent has sufficient radial supporting strength for clinical applications. Moreover, the volume of the matrix per unit blood vessel area is less than volumes of existing stents. When the absorbable stent and existing stents are made of the same material, the absorbable stent has a shorter degradation and absorption cycle.

170. 发明申请

US20190307463A1 Lung volume-reducing elastic implant and instrument 审中-公开
公开(公告)号：US20190307463A1
公开(公告)日：2019-10-10
申请号：US16419867
申请日：2019-05-22
申请人： Lifetech Scientific (Shenzhen) Co., Ltd.
发明人： Weilin LIN , Siyi LI , Anning LI
IPC分类号： A61B17/12 , A61F2/04
摘要： A lung volume-reducing elastic implant (2) and a lung volume-reducing instrument; the lung volume-reducing elastic implant (2) is tubular and comprises a proximal implant end (201), an elastic deformation part (205) and a distal implant end (202); the elastic deformation part (205) is located between the proximal implant end (201) and the distal implant end (202), and the elastic deformation part (205) has a shape memory characteristic; the lung volume-reducing elastic implant (2) is opened at the proximal implant end (201); the elastic deformation part (205) is provided with a plurality of grooves (204) at intervals along the longitudinal direction thereof; each groove (204) communicates with the tube cavity of the elastic deformation part (205); the lung volume-reducing instrument comprises the lung volume-reducing elastic implant (2) and a delivery device (1) matching same; the delivery device (1) comprises a guidewire (101) and a hollow push piece (110); the lung volume-reducing elastic implant (2) is detachably connected to the distal end of the hollow push piece (110) via the proximal implant end (201); and the guidewire (101) passes through the tube cavity of the lung volume-reducing elastic implant (2) and the tube cavity of the hollow push piece (110). The lung volume-reducing instrument is more convenient for an operation and takes shorter time, and avoids damage to the inner wall of the bronchia, reducing the occurrence of pneumothorax.

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