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公开(公告)号：US5683365A
公开(公告)日：1997-11-04
申请号：US482595
申请日：1995-06-07
申请人： Herbert Brown , Joseph J. Chang , Mark Panzera , Thomas Sloane , David L. Bogert , Gerald J. Kovalic
发明人： Herbert Brown , Joseph J. Chang , Mark Panzera , Thomas Sloane , David L. Bogert , Gerald J. Kovalic
CPC分类号： A61M25/0618 , A61M5/3273 , A61M2005/325
摘要： A safety cover which securably and reliably locks the tip of a cannula in an interior chamber within the safety cover. The cover comprises an elongate body having the interior chamber and an axial through hole which extends along the entire length of the body, through the interior chamber and through which the cannula is slidably received. Displacing elements are positioned within the interior chamber, each of which includes a hole for receiving said cannula therethrough, and which displaces upon retraction of the tip of said cannula, thereby preventing subsequent advancement of said cannula tip. In a first embodiment the displacing elements are annular rings. In a second embodiment, the elements are rigid balls having through holes. In a third embodiment, the displacing elements are a pair of conical elements, one of which is spring biased, each of which includes an offset hole. In each embodiment, it is preferable that the cannula should include a thickened rib adjacent to said tip, and the safety cover should correspondingly include an annular section in the rear portion thereof. The through hole extending through the rear portion has a diameter which is smaller than said thickened rib of said cannula whereby the cannula tip may not be retracted from the safety cover.
摘要翻译： 安全盖，其安全可靠地将插管的尖端锁定在安全盖内的内部室中。 所述盖包括具有所述内部腔室的细长主体和沿所述主体的整个长度延伸穿过所述内部腔室并且所述套管可滑动地被容纳的轴向通孔。 位移元件定位在内部腔室内，每个腔室包括用于接收穿过其中的套管的孔，并且当所述套管的尖端缩回时位移元件位移，从而防止所述套管末端的后续进展。 在第一实施例中，移位元件是环形环。 在第二实施例中，元件是具有通孔的刚性球。 在第三实施例中，位移元件是一对锥形元件，其中一个圆锥形元件是弹簧偏置的，每个都包括一个偏移孔。 在每个实施例中，优选地，插管应包括与所述尖端相邻的加厚肋，并且安全盖应相应地在其后部包括环形部分。 延伸穿过后部的通孔具有比所述套管的所述加厚肋小的直径，由此套管末端可能不会从安全盖缩回。
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公开(公告)号：US5078687A
公开(公告)日：1992-01-07
申请号：US567419
申请日：1990-08-14
申请人： William Egolf , Michael O'Neil , Mark Panzera , Joseph Chang
发明人： William Egolf , Michael O'Neil , Mark Panzera , Joseph Chang
CPC分类号： A61M25/0606 , A61M25/0009
摘要： An over-the-needle catheter assembly is provided in which a restriction of the inner diameter of the catheter tube is formed in the proximity of the needle hub. The restriction is formed by heating a portion of the catheter tube to the softening point of the catheter material, stretching the catheter tube to cause the heated portion of the catheter tube to tighten about an inner needle or mandril, then releasing the stretching force to allow the stretched portion to relax, leaving a small gap between the inner wall of the catheter tube and the outer diameter of the insertion needle. The small gap is preferably sized to be on the order of the size of the diameter of blood cells to restrict the flow of liquids past the restriction and into the catheter hub.
摘要翻译： 提供了一种针针导管组件，其中在针座附近形成导管管内径的限制。 通过将导管的一部分加热到导管材料的软化点，拉伸导管以使导管的加热部分围绕内针或心轴紧固，然后释放拉伸力以允许 拉伸部分松弛，在导管管的内壁和插入针的外径之间留下小间隙。 优选地，小间隙的尺寸设定为血细胞直径大小的量级，以限制液体流过限制物并进入导管毂。
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公开(公告)号：US5688249A
公开(公告)日：1997-11-18
申请号：US412482
申请日：1995-03-28
CPC分类号： A61M25/0625 , A61M5/3243 , A61M5/3269
摘要： The disclosed invention provides a telescoping tip protector for reducing the risk of needle sticks in used catheter introducers. The pair of telescoping members are adapted such that they telescope from a housing which is gripped by the user with one of the telescoping members locking in a position extending from the housing and the second member locks in a position extending from the first member. The second member carries thereon a tip protecting portion which surrounds the cannula tip and prevents the inadvertent jabbing, piercing or sticking of the needle into a person after the use of the introducer and engagement of the protector.
摘要翻译： 所公开的发明提供了一种用于降低使用过的导管引导器中的针刺风险的伸缩式尖端保护器。 一对伸缩构件适于使得它们从由使用者抓握的壳体伸出，伸缩构件中的一个锁定在从壳体延伸的位置，并且第二构件锁定在从第一构件延伸的位置。 第二构件在其上承载有围绕套管尖端的尖端保护部分，并且在使用导引器并且保护器的接合之后防止针不经意地刺入，刺穿或粘贴到人中。
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公开(公告)号：US5126090A
公开(公告)日：1992-06-30
申请号：US567420
申请日：1990-08-14
申请人： William Egolf , Michael O'Neil , Mark Panzera , Joseph Chang
发明人： William Egolf , Michael O'Neil , Mark Panzera , Joseph Chang
CPC分类号： A61M25/0009 , A61M25/0606
摘要： An over-the-needle catheter assembly in which a restriction of the inner diameter of the catheter tube is formed in the proximity of the needle hub. The restriction is formed by heating a portion of the catheter tube to the softening point of the catheter material, stretching the catheter tube to cause the heated portion of the catheter tube to tighten about an inner needle or mandrel, then releasing the stretching force to allow the stretched portion to relax, leaving a small gap between the inner wall of the catheter tube and the outer diameter of the insertion needle. The small gap is preferably sized to be on the order of the size of the diameter of blood cells to restrict the flow of liquids past the restriction and into the catheter hub.
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