Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
Instrument for local anaesthesia comprising a tubular canula and a stylet including a sharply pointed shaft fitting in the canula, characterized in that the canula consists of an electrically insulating material and in the operative position of the instrument surrounds the shaft of the stylet, and the stylet consists of an electrically conducting material, and that the stylet is connected with and makes contact with a plug for connection to a neuro-stimulator.
Claim 2
Dependent Claim
72 words
Instrument for local anaesthesia comprising a tubular canula and a stylet including a sharply pointed shaft fitting in the canula, characterized in that the canula consists of an electrically insulating material and in the operative position of the instrument surrounds the shaft of the stylet, and the stylet consists of an electrically conducting material, and that the stylet is connected with and makes contact with a plug for connection to a neuro-stimulator.
Claim 3
Dependent Claim
16 words
Instrument of claim 1, characterized in that the connector plug is being detacheble from the stylet.
Claim 4
Dependent Claim
17 words
Instrument of claim 1 or 2, characterized in that the stylet consists of a hollow puncturing needle.
Claim 5
Dependent Claim
77 words
Plug for electrical contact between the active pole of a neuro-stimulator and a stylet mounted in a coupling socket and inserted into a canula, characterized by a body (31) extending into a coupling stump (32) and by two contact pins (33, 34), the first contact pin (33) being rigidly attached to the body (31) and the second contact pin (34) being aligned with the axis of the coupling stump (32) and being resiliently attached to the body.
Claim 6
Dependent Claim
77 words
Plug for electrical contact between the active pole of a neuro-stimulator and a stylet mounted in a coupling socket and inserted into a canula, characterized by a body (31) extending into a coupling stump (32) and by two contact pins (33, 34), the first contact pin (33) being rigidly attached to the body (31) and the second contact pin (34) being aligned with the axis of the coupling stump (32) and being resiliently attached to the body.
Claim 7
Dependent Claim
54 words
Plug of claim 4, characterized in that the two contact pins (33, 34) are both aligned with the axis of the coupling stump (32), and. one end of the second contact pin (34) is received into the first contact pin (33) and abuts a spring (36) lying within the -first contact pin ' (33).
Claim 8
Dependent Claim
30 words
Plug of claim 4 or 5, characterized in that the free end of the second contact pin is provided with an enlarged head (37) including at least one discharge channel.