Patents by Inventor Zhenyu Yuan
Zhenyu Yuan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230021694Abstract: A system for occluding a dissection tear includes a stent and at least one occluder and is such configured that the stent and the occluder are separate from each other prior to the delivery of the system to a targeted site and connect to each other after the delivery of the system to the targeted site. The stent and the occluder are separately delivered and released in a diseased blood vessel to significantly reduce the resistance encountered during delivery and release of the stent and the occluder. Moreover, when introducing the occluder into the false lumen, only the profile of the occluder needs to be adjusted, resulting in a lowered surgical difficulty and an improved surgical success rate.Type: ApplicationFiled: September 4, 2020Publication date: January 26, 2023Inventors: Qing ZHU, Chunlin TU, Yilu CHEN, Guangjian ZHANG, Zhaoduo ZHANG, Zhenyu YUAN
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Publication number: 20230018528Abstract: A stent delivery system and a method for mounting a stent (1) are disclosed. The stent delivery system includes a handle, an outer tube (52), a restraining member and delayed-release member (4) and is structurally simple and easy to use. During the release of a stent (1) from the restraining member, a proximal end of the stent (1) is always secured to the delayed-release member (4), avoiding the stent (1) from moving backward under the action of forces from the blood and thus resulting in improved positional accuracy of the release of the stent (1). Additionally, during the release of the stent (1) from the restraining member, a distal end of the stent (1) can be secured to an inner tube (51) by means of a fixed coil (32), and the proximal end of the stent (1) can remain fixed on the delayed-release member (4). This can avoid the stent (1) from moving forward or backward during the release of a middle section of the stent (1), allowing the stent (1) to be released under true accurate positional control.Type: ApplicationFiled: September 4, 2020Publication date: January 19, 2023Inventors: Dadong PENG, Chunlin TU, Xiaojuan DENG, Zhenyu YUAN, Qing ZHU
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Publication number: 20230008857Abstract: An occluder (100) and system. The occluder (100) includes a body (110) including a shaping wire (111) and a spring coil (112), the shaping wire (111) formed by a resilient metal wire and configured to have a predetermined shape, the spring coil (112) sleeved on the shaping wire (111) in order to shape the body (110) with the predetermined shape. Through maintaining the shape of the body (110) by means of the shaping wire (111), the body (110) is able to effectively block the breach (30) in aortic dissection treatments.Type: ApplicationFiled: September 4, 2020Publication date: January 12, 2023Inventors: Chunlin TU, Qingsheng LU, Guangjian ZHANG, Zhaoduo ZHANG, Zhenyu YUAN, Qing ZHU
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Patent number: 10263593Abstract: A filter circuit in a radio frequency power detection circuit includes input and output lines, wherein: an input terminal of the input and output lines is connected with a first capacitor, the first capacitor is connected with a first filtering sub-circuit; the first filtering sub-circuit is connected with a third capacitor, the third capacitor is connected with a second filtering sub-circuit; the second filtering sub-circuit is connected with an output terminal of the input and output lines. The filter circuit of the present invention is able to effectively improve the detection accuracy of the radio frequency electric source output power, thereby improving the power output accuracy of the radio frequency electric source.Type: GrantFiled: August 24, 2017Date of Patent: April 16, 2019Assignee: Beijing BBEF Science & Technology Co.,Ltd.Inventors: Liang Zhao, Zhenyu Yuan, Guangjian Li, Weize Li, Nianxi Xue
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Patent number: 10080674Abstract: A branched stent graft, a convey system comprising thereof and manufacturing method thereof, the branched stent graft includes a main body (100) and a side branch (200), at least a portion of a lowermost stent section of the side branch (200) closest to the main body (100) is not stitched to the cover of the side branch from a lower end to an upper end, the at least a portion of the lowermost stent section is located on a side of the side branch corresponding to a folding direction of the side branch. After deployed, the branched stent graft has an effective supporting force at the base portion of the side branch. In addition, during the deployment of the stent, the side branch can expand to a maximal extent even when the positioning is slightly inaccurate. Further, vascular stenosis or occlusion will not be caused even when subsequent endothelialization occurs.Type: GrantFiled: March 4, 2014Date of Patent: September 25, 2018Assignee: MICROPORT ENDOVASCULAR (SHANGHAI) CO., LTD.Inventors: Zhenyu Yuan, Qing Zhu, Yanbin Gao, Zhonghua Li, Qiyi Luo
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Patent number: 10014827Abstract: A power-adjustable RF (radio frequency) output circuit is disclosed, which includes a RF frequency source transformer, wherein: one output end of the RF frequency source transformer is connected with a gate of a power amplifier module, another output end of the RF frequency source transformer is connected with a gate bias voltage control circuit; a source of the power amplifier module is connected with ground; the gate of the power amplifier module is connected with a resistor which is connected with ground, a drain of the power amplifier module is connected with a fixed voltage DC (direct current) power supply and also connected with a RF filtering network for outputting a RF power through the RF filtering network.Type: GrantFiled: May 10, 2017Date of Patent: July 3, 2018Assignee: Beijing BBEF Science & Technology Co., Ltd.Inventors: Xuewen Liu, Guangjian Li, Zhenyu Yuan, Nianxi Xue, Weize Li
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Publication number: 20170353172Abstract: A filter circuit in a radio frequency power detection circuit includes input and output lines, wherein: an input terminal of the input and output lines is connected with a first capacitor, the first capacitor is connected with a first filtering sub-circuit; the first filtering sub-circuit is connected with a third capacitor, the third capacitor is connected with a second filtering sub-circuit; the second filtering sub-circuit is connected with an output terminal of the input and output lines. The filter circuit of the present invention is able to effectively improve the detection accuracy of the radio frequency electric source output power, thereby improving the power output accuracy of the radio frequency electric source.Type: ApplicationFiled: August 24, 2017Publication date: December 7, 2017Inventors: Liang Zhao, Zhenyu Yuan, Guangjian Li, Weize Li, Nianxi Xue
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Publication number: 20170244364Abstract: A power-adjustable RF (radio frequency) output circuit is disclosed, which includes a RF frequency source transformer, wherein: one output end of the RF frequency source transformer is connected with a gate of a power amplifier module, another output end of the RF frequency source transformer is connected with a gate bias voltage control circuit; a source of the power amplifier module is connected with ground; the gate of the power amplifier module is connected with a resistor which is connected with ground, a drain of the power amplifier module is connected with a fixed voltage DC (direct current) power supply and also connected with a RF filtering network for outputting a RF power through the RF filtering network.Type: ApplicationFiled: May 10, 2017Publication date: August 24, 2017Inventors: Xuewen Liu, Guangjian Li, Zhenyu Yuan, Nianxi Xue, Weize Li
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Publication number: 20160015536Abstract: A branched stent graft, a convey system comprising thereof and manufacturing method thereof, the branched stent graft includes a main body (100) and a side branch (200), at least a portion of a lowermost stent section of the side branch (200) closest to the main body (100) is not stitched to the cover of the side branch from a lower end to an upper end, the at least a portion of the lowermost stent section is located on a side of the side branch corresponding to a folding direction of the side branch. After deployed, the branched stent graft has an effective supporting force at the base portion of the side branch. In addition, during the deployment of the stent, the side branch can expand to a maximal extent even when the positioning is slightly inaccurate. Further, vascular stenosis or occlusion will not be caused even when subsequent endothelialization occurs.Type: ApplicationFiled: March 4, 2014Publication date: January 21, 2016Applicant: MICROPORT ENDOVASCULAR (SHANGHA) CO., LTD.Inventors: Zhenyu YUAN, Qing ZHU, Yanbin GAO, Zhonghua LI, Qiyi LUO
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Patent number: 8961587Abstract: A branched stent graft comprises a main body portion and a branch portion. Each of the main body portion and the branch portion includes a stent and a tubular graft. The stent of the main body portion includes a plurality of stent segments, at least one of which is a varying-height stent segment (102). The stent of the branch portion includes one or more stent segments, at least one of which is a varying-height stent segment (103). The distance between the proximal-most stent segment of the branch portion and the main body portion is in the range of 2-8 mm. A positioning ring (105) may be used at a side opening which connects the branch portion and the main body portion, and the positioning ring (105) can be sutured inside the graft of the main body, between the graft of the main body and the graft of the branch, or outside the graft of the branch.Type: GrantFiled: March 17, 2010Date of Patent: February 24, 2015Assignee: Microport Endovascular (Shanghai) Co., Ltd.Inventors: Qing Zhu, Qiyi Luo, Zhenyu Yuan
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Publication number: 20110319983Abstract: A branched stent graft comprises a main body portion and a branch portion. Each of the main body portion and the branch portion includes a stent and a tubular graft. The stent of the main body portion includes a plurality of stent segments, at least one of which is a varying-height stent segment (102). The stent of the branch portion includes one or more stent segments, at least one of which is a varying-height stent segment (103). The distance between the proximal-most stent segment of the branch portion and the main body portion is in the range of 2-8 mm. A positioning ring (105) may be used at a side opening which connects the branch portion and the main body portion, and the positioning ring (105) can be sutured inside the graft of the main body, between the graft of the main body and the graft of the branch, or outside the graft of the branch.Type: ApplicationFiled: March 17, 2010Publication date: December 29, 2011Applicant: MICROPORT MEDICAL (SHANGHAI) CO., LTD.Inventors: Qing Zhu, Qiyi Luo, Zhenyu Yuan