EP0446020A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical gripping instrument
Assignee: CR Bard Inc
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Filing: 1991-03-05
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Granted: —
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Expires: 2011-03-05
Abstract
Abstract A surgical gripping instrument, e.g. for gripping and removing intestinal polyps, includes a sheath (60), gripping means (59) at the distal end of the sheath movable with respect to the sheath by a predetermined distance for actuating the gripping means, a support assembly (10) and a slide (30) movable with respect to the support assembly. The slide (30) is connected to at least one of the sheath and the gripping means for movement thereof. In accordance with the invention, means are provided responsive to movement of the slide relative to the support assembly by a distance less than the predetermined distance to cause the gripping means to be moved relative to the sheath by the predetermined distance in order to actuate the gripping means. This enables the throw of the instrument, i.e. the distance the surgeon needs to move his or her fingers, to be reduced to a comfortable level while retaining the desired travel of the gripping means relative to the sheath.
Inventors
- 👤 Robert Frederick Bencini
- 👤 Stanley Howard Remiszewski
- 👤 Barry David Weitzner
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 03:20
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/28; A61B17/29; A61B17/2909; A61B17/32; A61B17/3205; A61B17/32056; A61B2017/2912; A61B2017/2923; A61B2017/2926; A61B2017/2932
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
117 words
A surgical gripping instrument of the type including a sheath (60), gripping means (59) at the distal end of the sheath movable with respect to the sheath, a predetermined distance for actuating the gripping means, a support assembly (10, 100) and a slide (30, 108) movable with respect to the support assembly, the slide (30, 108) being connected to at least one of the sheath and the gripping means for movement thereof, and characterised by means responsive to movement of the slide relative to the support assembly a distance less than the predetermined distance for causing the gripping means to be moved relative to the sheath by the predetermined distance in order to actuate the gripping means.
Claim 2
Dependent Claim
31 words
A surgical instrument according to Claim 1, wherein the means responsive to movement comprises means for simultaneously moving the gripping means in one direction and the sheath in the opposite direction.
Claim 3
Dependent Claim
34 words
A surgical instrument according to Claim 2, wherein the means responsive to movement comprises means connecting the slide to the gripping means and a belt (80) connected to the sheath (60) and slide (30).
Claim 4
Dependent Claim
33 words
A surgical instrument according to Claim 1, wherein the means responsive to movement comprises rotatable gears (118, 120) mounted on the slide (108) and engaging the sheath (60) or the gripping means (59).
Claim 5
Dependent Claim
99 words
A surgical gripping instrument, comprising: a support assembly (10, 100); a slide (30, 108) mounted on the support assembly for relative movement with respect thereto; a wire (53) movable with the slide relative to the support assembly; gripping means (59) at the distal end of the wire; a sheath (60) enveloping the wire, movement of the wire (53) a predetermined distance relative to the sheath, causing the gripping means to be actuated; and characterised by means enabling the slide to be moved a distance relative to the support assembly less than the predetermined distance to actuate the gripping means.
Claim 6
Dependent Claim
46 words
A surgical gripping instrument according to Claim 5, wherein the sheath (60) is movable relative to the support assembly (10, 100) and wherein the enabling means comprises means for moving the wire (53) in one direction and simultaneously moving the sheath (60) in the opposite direction.
Claim 7
Dependent Claim
86 words
A surgical gripping instrument according to Claim 6, wherein the wire (53) is secured to the slide (30), wherein the support assembly includes distal and proximal axles (16, 18) and wherein the enabling means comprises a belt (80) fixed at both ends to the slide (30), the belt (80) passing over both of the axles and secured to the sheath (60), whereby movement of the slide (30) in one direction causes rotation of the belt (80) and movement of the sheath (60) in the opposite direction.
Claim 8
Dependent Claim
64 words
A surgical gripping instrument according to Claim 5, wherein the sheath (60) is movable relative to the support assembly (100) and wherein the enabling means comprises gear means (118, 120, 122, 124) connected to the sheath (60) and support assembly (100) for moving the sheath (60) in a direction opposite the direction of movement of the slide (108) relative to the support assembly (100).
Claim 9
Dependent Claim
75 words
A surgical gripping instrument according to Claim 5, wherein the sheath (60) is fixed to the support assembly (100) wherein the wire (53) is movable relative to the slide (108), and wherein the enabling means comprises gear means (118, 120, 122, 124) for moving the wire (53) a distance relative to the support assembly (100) greater than the displacement of the slide (108) relative to the support assembly (100) as the slide (108) is moved.
Claim 10
Dependent Claim
41 words
A surgical gripping instrument according to Claim 9, wherein the gear means (118, 119, 120) causes the wire (53) to move in a direction opposite the direction of movement of the slide (108) relative to the support assembly (100). (Fig. 8)
Claim 11
Dependent Claim
37 words
A surgical gripping instrument according to Claim 9, wherein the gear means (116, 118, 120) causes the wire (53) to move in the same direction as the slide (108) relative to the support assembly (100). (Fig. 9)
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