Medical gripping and/or cutting instrument
First Claim
1. A medical gripping and/or cutting instrument comprising an instrument shaft, a handle that can be movably fixed in longitudinal direction on the instrument shaft via a coupling mechanism, and a tool positioned on the distal end of the instrument shaft consisting of two jaw members, where at least one jaw member of the tool is movable with respect to the other jaw member, and wherein the coupling mechanism in addition serves to operate the at least one movable jaw member of the tool and that the instrument shaft consists of an inner shaft as well as an outer tube coaxially surrounding the inner shaft, and the outer tube consists at least partly of several tube segments that can slide independently of one another in the longitudinal direction of the instrument shaft and the handle can be secured on the outside of the outer tube;
- wherein the handle consists of the coupling mechanism made up of at least two clampinq elements and a distancinq case positioned between the two clamping elements;
wherein the axial extension of the distancing case is greater than that of the individual tube seqments of the outer tube; and
wherein the two clampinq elements are ore-tensioned by means of a spring element in the direction toward the projection on the distancing case.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a medical gripping and/or cutting instrument with an instrument shaft (1), with a handle (3) that can be fixed movably on the instrument shaft (1), and with a tool (2) mounted on the distal end of the instrument shaft (1) and consisting of two jaw member (2a, 2b), where at least one jaw member (2a or 2b) of the tool (2) can move in relation to the other jaw member (2b or 2a). In order to provide a medical instrument that, along with good cleaning properties and compact structure, also ensures simple and safe operation, the invention proposes that the handle (3) should include a coupling mechanism both to fix the handle (3) to the instrument shaft (1) and also to operate the at least one movable jaw member (2a or 2b) of the tool (2).
-
Citations
14 Claims
-
1. A medical gripping and/or cutting instrument comprising an instrument shaft, a handle that can be movably fixed in longitudinal direction on the instrument shaft via a coupling mechanism, and a tool positioned on the distal end of the instrument shaft consisting of two jaw members, where at least one jaw member of the tool is movable with respect to the other jaw member, and wherein the coupling mechanism in addition serves to operate the at least one movable jaw member of the tool and that the instrument shaft consists of an inner shaft as well as an outer tube coaxially surrounding the inner shaft, and the outer tube consists at least partly of several tube segments that can slide independently of one another in the longitudinal direction of the instrument shaft and the handle can be secured on the outside of the outer tube;
-
wherein the handle consists of the coupling mechanism made up of at least two clampinq elements and a distancinq case positioned between the two clamping elements; wherein the axial extension of the distancing case is greater than that of the individual tube seqments of the outer tube; and wherein the two clampinq elements are ore-tensioned by means of a spring element in the direction toward the projection on the distancing case. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A medical gripping and/or cutting instrument comprising an instrument shaft, a handle that can be movably fixed in longitudinal direction on the instrument shaft via a coupling mechanism, and a tool positioned on the distal end of the instrument shaft consisting of two jaw members, where at least one jaw member of the tool is movable with respect to the other jaw member, and wherein the coupling mechanism in addition serves to operate the at least one movable jaw member of the tool and that the instrument shaft consists of an inner shaft as well as an outer tube coaxially surrounding the inner shaft, and the outer tube consists at least partly of several tube segments that can slide independently of one another in the longitudinal direction of the instrument shaft and the handle can be secured on the outside of the outer tube;
-
wherein at least the radially outside peripheral edges of the individual tube segments of the outer tube are tapering or rounded; wherein the jaw members of the tool are pre-tensioned into a working position by means of a spring element; and wherein at least the part of the outer tube made up of the individual tube segments is pretensioned in the proximal direction by means of a spring element. - View Dependent Claims (12, 13, 14)
-
Specification