Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
227 words
A surgical instrument having a body which is , provided with an inlet opening for a driving gas and with an opening for the introduction of a physiological solution; a hollow small tube or cannula which is provided in the front portion with an opening and is arranged in front of said body; a member which is positioned inside the body of the instrument and can shift alternately, when driven by said driving gas, which is counteracted in its motion by counteracting means, and a cutting blade which is hollow inside and is movable according to a motion integral with that of said movable member, said cutting blade having its front end positioned inside said outer cannula, which is provided with a front opening and is connected at the back portion to a suction system; said instrument being characterized in that said outer cannula is coupled at the front portion to said body through removable coupling means, and being also characterized in that said cutting blade is inserted into said body at the back patt, and being characterized in that a guide is coupled integrally with said movable member which guide is provided at the back portion with second removable coupling means which couple with corresponding coupling means borne by said cutting blade so as to allow the blade itself to move integrally with the movable member.
Claim 2
Dependent Claim
18 words
A surgical instrument according to claim 1, characterized in that it is made up of a sterilizable material
Claim 3
Dependent Claim
18 words
A surgical instrument according to claim 1, characterized in that said movable member is made up of titanium.
Claim 4
Dependent Claim
41 words
A surgical instrument according to any one of the preceding claims, characterized in that the coupling means between said cannula and the body are made up of a threaded tap-female coupling, or of a fixed joint or of a bayonet joint.
Claim 5
Dependent Claim
41 words
A surgical instrument according to anyone of the preceding claims 1-3, characterized in that the coupling means between the guide and the cutting blade are made up of a threaded tap-female coupling, of a fixed joint or of a bayonet joint.
Claim 6
Dependent Claim
28 words
A surgical instrument according to claim 5, wherein a spacing member is arranged between said coupling means provided on the guide as well as on the cutting blade.
Claim 7
Dependent Claim
43 words
A surgical instrument according to any one of the preceding claims, characterized in that a groove is provided in said movable member, which groove couples with a reference dowel arranged inside the body, in order to avoid the rotation of the movable member.
Claim 8
Dependent Claim
26 words
A surgical instrument according to any one of the preceding claims, characterized in that said body is made up of two parts which can be disassembled.
Claim 9
Dependent Claim
36 words
A surgical instrument according to anyone of the preceding claims, characterized in that means are provided on the back part of said body for adjusting the position of the cutting blade with respect to said cannula.
Claim 10
Dependent Claim
22 words
A surgical instrument according to anyone of the preceding claims, wherein said driving gas is introduced according to an adjustable pulsating frequency.