公开(公告)号：US4726516A

公开(公告)日：1988-02-23

申请号：US34536

申请日：1987-04-06

Applicant: Ian C. Cree

Inventor： Ian C. Cree

IPC: E01B23/00

CPC classification number: E01B23/00

Abstract: A pair of coplanar, telescopic tracks are held in a spaced-apart and generally parallel relationship by a plurality of crossties. The crossties may also be telescopic to vary the space between the tracks according to use. At one end the tracks can be elevated by length-adjustable props or variable trusses. Each track comprises at least two segments, a first segment adapted to be slidably disposed in a channel of the second segment. The segments can be channel bars. A detent is used to temporarily hold the tracks at any of a plurality of telescoped lengths. A variable truss comprises a pair of divergent struts with a variable length member subtending the angle between the struts. This device is especially useful as a variable ramp for wheelchairs when it is made from relatively lightweight material such as aluminum.

Abstract translation: 一对共面的伸缩轨道由多个十字架保持为间隔开的和大致平行的关系。 根据使用情况，十字架也可以伸缩以改变轨道之间的空间。 一端可以通过长度可调节的道具或可变桁架来提升轨道。 每个轨道包括至少两个段，适于可滑动地设置在第二段的通道中的第一段。 段可以是通道栏。 制动器用于以多个伸缩长度中的任何一个暂时保持轨道。 可变桁架包括一对具有可变长度构件的发散支柱，对准支柱之间的角度。 当这种装置由相对轻质的材料（如铝）制成时，该装置特别适用于轮椅的可变坡道。

公开(公告)号：US4850996A

公开(公告)日：1989-07-25

申请号：US158627

申请日：1988-02-22

Applicant: Ian C. Cree

Inventor： Ian C. Cree

IPC: A61M5/32

CPC classification number: A61M5/326 ,  A61M2005/3247 ,  A61M2005/3267

Abstract: A sheath is provided as a cover over a hollow needle for use by medical personnel in combination with a syringe. When needle is not in use, the sheath protects medical personnel from accidental scraping or injections. During use in injections, the sheath is retracted by skin contact into a chamber attached to the proximal end of the needle. The sheath can also be capped or sealed when not in use to maintain safe conditions until actual injection use on a patient. The sheath may also be restrained from retraction during shipping or rough handling. The sheath is made from transparent material to not impede accurate injection of the needle into the patient. In use, the sheath further maintains sterile conditions at the point of injection by precluding airborne contamination.

Abstract translation: 鞘被设置为中空针头上的盖子，以供医务人员与注射器组合使用。 当针不使用时，护套可以保护医务人员免受意外刮擦或注射。 在注射使用期间，护套通过皮肤接触收缩到附接到针的近端的腔室中。 当不使用护套时，护套也可以被封盖或密封，以便在病人实际注射使用之前保持安全条件。 在运输或粗加工期间，护套也可以被限制在收缩中。 护套由透明材料制成，不妨碍针头进入患者的准确注射。 在使用中，护套通过排除空气污染物在注射点进一步保持无菌条件。