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    • 5. 发明申请
    • LOCKING MECHANISM FOR A CATHETER
    • 导管的锁定机构
    • US20110313403A1
    • 2011-12-22
    • US13129906
    • 2009-11-12
    • Amy Lee HruskaGeoffrey P. GrantDavid R. LessardSteven D. AndersonMichael W. Hardert
    • Amy Lee HruskaGeoffrey P. GrantDavid R. LessardSteven D. AndersonMichael W. Hardert
    • A61M27/00
    • A61M25/0097A61M25/04A61M2025/0163A61M2210/1085
    • A locking mechanism (15) for a catheter includes a main body (20), a tip (30), and a locking arm (50). The locking arm includes a pivotable portion (56) selectively receivable in a contoured outer surface portion of the main body (24). One end of a tubular member is engageable with the distal end of the tip, and the other end is insertable into a body cavity, e.g., for drainage of fluid therefrom. A tension member (14), e.g. suture, extends through the locking mechanism and the tubular member, and is actuable to maneuver the inserted end of the tubular member into a desired configuration, such as a loop or a pigtail (12). An end of the tension member is receivable along the main body contoured surface following actuation, and is lockable therein upon receipt of the locking arm pivotable portion in the contoured surface, thereby locking the tubular member end in the desired configuration.
    • 用于导管的锁定机构(15)包括主体(20),尖端(30)和锁定臂(50)。 锁定臂包括可选择性地容纳在主体(24)的轮廓外表面部分中的可枢转部分(56)。 管状构件的一端可与尖端的远端接合,另一端可插入体腔,例如用于从其中排出流体。 张紧构件(14),例如 缝合线延伸穿过锁定机构和管状构件,并且可致动以操纵管状构件的插入端部到期望的构造,例如环形或尾纤(12)。 张紧构件的端部可沿致动后的主体轮廓表面接收,并且在接收到成形表面中的锁定臂可枢转部分时可锁定在其中,从而将管状构件端部锁定在期望的构造中。
    • 7. 发明授权
    • Medical device including improved expandable balloon
    • 医疗装置包括改进的可膨胀气囊
    • US07485250B2
    • 2009-02-03
    • US10463749
    • 2003-06-16
    • Scott E. BoatmanDavid G. BurtonMichael C. HoffaDavid R. LessardDavid A. Drewes, Jr.Maggie A. Z. Hupcey
    • Scott E. BoatmanDavid G. BurtonMichael C. HoffaDavid R. LessardDavid A. Drewes, Jr.Maggie A. Z. Hupcey
    • B29C35/08D01F1/02A61M29/00
    • C08G69/48A61L29/06C08F283/04C08L77/00C08F218/16
    • A medical device (10) includes a catheter shaft (11) including inner and outer catheter shafts (12 and 14), and an expandable balloon (18) carried by the catheter shaft (11). The balloon (18) is made from an irradiation cross-linked mixture of a polyamide elastomer and at least one additional cross-linking reactant. The polyamide elastomer can be a polyester amide, a polyether ester amide or a polyether amide, and is preferably a nylon block copolymer. The cross-linking reactant can be: (a) a difunctional material, (b) a trifunctional material, (c) a tetrafunctional material, or (d) an aromatic molecule containing at least two ring substituents, each of the ring substituents having labile hydrogens at a benzylic site therein. The cross-linking reactant can also be diallyl phthalate or meta-phenylene dimaleimide. Irradiation is carried out by exposure to an electron beam or to ultraviolet, X- or gamma radiation, preferably at a total fluence of about 0.5 to about 20 megarads. The amount of the cross-linking reactant is selected to avoid the formation of gelling during the process by which the balloon (18) is made, and the amount of the cross-linking agent and the irradiation fluence are selected to give the balloon a strength generally about equal to that which would be obtained by mere irradiation.
    • 医疗装置(10)包括导管轴(11),其包括内导管轴和外导管轴(12和14)和由导管轴(11)承载的可膨胀气囊(18)。 球囊(18)由聚酰胺弹性体和至少一种另外的交联反应物的照射交联混合物制成。 聚酰胺弹性体可以是聚酯酰胺,聚醚酯酰胺或聚醚酰胺,优选为尼龙嵌段共聚物。 交联反应物可以是:(a)双官能材料,(b)三官能材料,(c)四官能材料,或(d)含有至少两个环取代基的芳族分子,每个环取代基具有不稳定性 在其苄基位点处的氢。 交联反应物也可以是邻苯二甲酸二烯丙酯或间亚苯基二马来酰亚胺。 照射通过暴露于电子束或紫外线,X射线或γ射线进行,优选以约0.5至约20兆拉德的总注量。 选择交联反应物的量以避免在制备气囊(18)的过程中形成胶凝,并且选择交联剂的量和照射注量以使球囊具有强度 通常大约等于仅通过照射获得的能量。