RU96111008A - DEVICE FOR PROTECTION OF KANИULI - Google Patents

Claims (13)

1. A device for protecting a cannula in a catheter insertion device, comprising (a) a housing for receiving a tubular needle or cannula protruding from the end of the housing and intended for inserting a catheter into a patient, characterized in that it contains (b) needle protection means sliding on the body, the needle or cannula passing through the needle guard in the working position of the tubular needle; needle guard includes: (c) a rear security device mounted slidably on the body, and (d) a front protector element You are slidable on the rear security element, the front security element is designed to retract into the rear security element, and the rear security element is designed to retract the needle-cannula into the body in the working position, the rear and front security elements are telescopically extendable relative to each other friend and housing to form a protective cavity for the needle or cannula after it is removed from the patient’s body.  2. The device according to claim 1, characterized in that the body is an elongated rectangular structure having one open end and one open side, and a central longitudinal edge extending inside the body. 3. The device according to p. 2, characterized in that the rear protection element contains oblong rectangular
a design that is open at the ends and slidably inserted into the body for axial movement relative to it.  4. The device according to p. 3, characterized in that the front protection element contains a pair of parallel arms connected at one end with it with the possibility of forming a fork-like structure, the shoulders are able to slide into the rear protection element for axial movement relative to it.  5. The device according to p. 4, characterized in that the protrusions on the outer surfaces of the front protection elements are engaged with snapping into the rear protection element in the retracted position of the protection elements inside the housing.  6. The device according to claim 5, characterized in that the security elements, in the first partially extended position, partially exit the housing, while the protrusions remain engaged, with snap-fit, with teeth so as to prevent relative axial movement between the security elements.  7. The device according to p. 6, characterized in that the protrusions, in the second part of the device, which is partially allocated further, are disconnected from the teeth (latches), while the front protection element partially protrudes from the back protection element. 8. The device according to claim 7, characterized in that the locking means in the third, partially reserved position of the security elements in the rear security element snap into the grooves in the longitudinal edge of the housing for locking the housing and the rear security element in the extended position
relative to each other.  9. The device according to claim 8, characterized in that in the fully extended position of the device, the front protection element additionally protrudes relative to the rear protection element, the latching means engages the protection elements with the possibility of holding the protection elements in the fully extended position, whereby the needle or cannula is fully retracted security features.  10. The device according to claim 8, characterized in that the locking means are adapted to be detached from the recesses in the designated and in the first, partially extended positions of the security elements.  11. The device according to claim 9, characterized in that the latching action between the protrusions and teeth and the latching action of the locking means and the latching means each produced by a specific sound signal indicating the specific position of consecutive extensions of the security elements.  12. The device according to p. 4, characterized in that the front element of protection includes protective means at the front end for connection with the catheter sleeve.  13. The device according to claim 1, characterized in that the housing, the front protection element and the rear protection element are each formed from a plastic material.