EP0027704A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical snare apparatus
Assignee: Individual
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Filing: 1980-10-09
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Granted: —
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Expires: 2000-10-09
Abstract
Abstract A surgical cannula apparatus (Figure 1) includes a sheath (32) having proximal and distal ends, a flexible member (34) in the sheath and movable longitudinally therein, the member (34) having proximal and distal ends, and a surgical instrument (104) operable by movement of the member (34) with respect to the sheath. The apparatus further includes an operating device (10) comprising a body (12) which slidably receives a slide (48) for movement longitudinally of the body. The body (12) has a generally cylindrical interior and the slide (48) has a pair of longitudinally spaced walls (44,46) of circular shape. The walls have aligned apertures which rotatably receive a stem (70) which has proximal and distal ends, and the proximal end of the flexible member (34) is fixed to the distal end of the stem (70). The proximal end of the sheath (32) is fixed to the body (12). The stem has a thumbwheel (84) accessible through the wall of the body, the thumbwheel being manipulatable to rotate the member (34) in the sheath (32). The slide (48) includes a rack and the body supports an additional thumbwheel (58) having gear teeth which engage the rack. Manipulation of the second thumbwheel causes the slide (48) to move longitudinally within the body to move the flexible member (34) longitudinally in the sheath.
Inventors
- 👤 Dale L. Chamness
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 17:42
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/32056; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61B17/00234; A61B2017/00292; A61B17/28; A61B17/29; A61B2017/2926; A61B2017/2927; A61B2017/2929; A61B2018/00053; A61B2018/00184; A61B2018/00196; A61B2018/00202; A61B2018/00208; A61B2018/1405; A61B2018/1407; A61B2018/141; A61B18/18; A61B18/1815; A61B2018/1861
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
219 words
An apparatus including a flexible sheath having proximal and distal ends, a flexible member disposed within the sheath and movable longitudinally therein, the flexible member having proximal and distal ends, and a surgical instrument operable by movement of the distal end of the flexible member with respect to the distal end of the sheath, an operating assembly comprising first means for moving the flexible member longitudinally with respect to the sheath, second means for rotating the flexible member within the sheath, and a body for supportin the first and second means, the body including a distal end for fixed attachment of the proximal end of the sheath thereto, the distal end of the body further defining an aperture through which the proximal end of the flexible member movably extends, the proximal end of the flexible member being coupled to the first and second means for movement thereby, wherein the first means includes a carriage supported in the body for movement longitudinally thereof, the body including an interior wall and the carriage including a pair of walls spaced apart longitudinally and movable longitudinally in the body, the second means comprising a stem rotatably mounted with respect to the first means, the stem having proximal and distal ends, and the proximal end of the flexible member being fixed to the stem.
Claim 2
Independent Claim
219 words
An apparatus including a flexible sheath having proximal and distal ends, a flexible member disposed within the sheath and movable longitudinally therein, the flexible member having proximal and distal ends, and a surgical instrument operable by movement of the distal end of the flexible member with respect to the distal end of the sheath, an operating assembly comprising first means for moving the flexible member longitudinally with respect to the sheath, second means for rotating the flexible member within the sheath, and a body for supportin the first and second means, the body including a distal end for fixed attachment of the proximal end of the sheath thereto, the distal end of the body further defining an aperture through which the proximal end of the flexible member movably extends, the proximal end of the flexible member being coupled to the first and second means for movement thereby, wherein the first means includes a carriage supported in the body for movement longitudinally thereof, the body including an interior wall and the carriage including a pair of walls spaced apart longitudinally and movable longitudinally in the body, the second means comprising a stem rotatably mounted with respect to the first means, the stem having proximal and distal ends, and the proximal end of the flexible member being fixed to the stem.
Claim 3
Dependent Claim
30 words
Apparatus according to claim 1 wherein the stem includes a thumbwheel for manipulation to rotate the stem with respect to the first means, the thumbwheel being accessible through the body.
Claim 4
Dependent Claim
134 words
A surgical apparatus including a sheath having proximal and distal ends, a snare wire extending within the apparatus and having proximal.and distal ends, a loop formed at the distal end of the snare wire, and means for protracting the distal end of the snare wire including the loop from, and retracting the distal end of the snare wire including the loop into, the distal end of the sheath, wherein the loop is formed with a double offset bend in a plane extending longitudinally of the cannula through the loop, such that partial retraction of the loop into the distal end of the sheath causes the loop.to move parallel to the first plane and perpendicular to a second plane which is perpendicular to the first plane and parallel to the longitudinal extent of the cannula.
Claim 5
Dependent Claim
134 words
A surgical apparatus including a sheath having proximal and distal ends, a snare wire extending within the apparatus and having proximal.and distal ends, a loop formed at the distal end of the snare wire, and means for protracting the distal end of the snare wire including the loop from, and retracting the distal end of the snare wire including the loop into, the distal end of the sheath, wherein the loop is formed with a double offset bend in a plane extending longitudinally of the cannula through the loop, such that partial retraction of the loop into the distal end of the sheath causes the loop.to move parallel to the first plane and perpendicular to a second plane which is perpendicular to the first plane and parallel to the longitudinal extent of the cannula.
Claim 6
Dependent Claim
22 words
Apparatus according to claim 3 wherein the loop is generally W-shaped in the plane extending longitudinally of the cannula through the loop.
Claim 7
Dependent Claim
239 words
Apparatus including a sheath having proximal and distal ends, a member disposed within the sheath and movable longitudinally therein, the movable member having proximal and distal ends, and a surgical instrument operable by movement of the distal end of the movable member with respect to the distal end of the sheath. an operating assembly comprising first means for moving the movable member longitudinally with respect to the sheath, second means for rotating the movable member within the sheath, and a body for supporting the first and second means, the body including a portion for fixed attachment of the proximal end of the sheath thereto, said portion of the body further defining an aperture through which the proximal end of the movable member movably extends, the proximal end of the movable member being coupled to the first and second means for movement thereby, wherein the first means includes a slide supported in the body for movement longitudinally thereof, the body including means defining an interior and the slide including means shaped to slide in the interior and a driven portion, the first means further including a first thumbwheel rotatably mounted in the body, the first thumbwheel providing a driving portion to engage the driven portion, and the first means further including means for providing a braking force on the first thumbwheel, manipulation of the first thumbwheel overcoming the braking force on the first thumbwheel to cause movement of the slide.
Claim 8
Dependent Claim
239 words
Apparatus including a sheath having proximal and distal ends, a member disposed within the sheath and movable longitudinally therein, the movable member having proximal and distal ends, and a surgical instrument operable by movement of the distal end of the movable member with respect to the distal end of the sheath. an operating assembly comprising first means for moving the movable member longitudinally with respect to the sheath, second means for rotating the movable member within the sheath, and a body for supporting the first and second means, the body including a portion for fixed attachment of the proximal end of the sheath thereto, said portion of the body further defining an aperture through which the proximal end of the movable member movably extends, the proximal end of the movable member being coupled to the first and second means for movement thereby, wherein the first means includes a slide supported in the body for movement longitudinally thereof, the body including means defining an interior and the slide including means shaped to slide in the interior and a driven portion, the first means further including a first thumbwheel rotatably mounted in the body, the first thumbwheel providing a driving portion to engage the driven portion, and the first means further including means for providing a braking force on the first thumbwheel, manipulation of the first thumbwheel overcoming the braking force on the first thumbwheel to cause movement of the slide.
Claim 9
Dependent Claim
39 words
Apparatus according to claim 5 wherein the second means comprises a stem rotatably mounted with respect to the first means, the stem having proximal and distal ends, the proximal end of the movable member being attached to the stem.
Claim 10
Dependent Claim
106 words
Apparatus according to claim 1 wherein the body includes means defining a generally cylindrical interior wall and the slide includes means shaped to slide in the cylinder, the slide comprising a portion defining a rack, the first means including a first thumbwheel rotatably mounted in the body, the periphery of the first thumbwheel providing pinion gear teeth to engage the rack, manipulation of the first thumbwheel causing movement of the slide, and the second means including a second thumbwheel movably mounted on the stem for manipulation to rotate the stem with respect to the first means, the first and second thumbwheels being accessible through the body.
Claim 11
Dependent Claim
48 words
Apparatus according to any preceding claim wherein the proximal end of the stem includes means defining a terminal for attachment to a.source of electrical energy, the stem further including means providing electrical contact between the terminal and the proximal end of the flexible member which is electrically conductive.
Claim 12
Dependent Claim
18 words
Apparatus according to claim 1 wherein the walls have substantially the same shape as the body interior wall.
Claim 13
Dependent Claim
21 words
Apparatus according to claim 2 wherein the second thumbwheel is longitudinally slidably mounted on, and fixed for rotation with the stem.
Claim 14
Dependent Claim
33 words
Apparatus according to claim 1 wherein the carriage includes a portion defining a worm follower, and the first means includes a worm supported for rotation in the body and engaged by the follower.
Claim 15
Dependent Claim
27 words
Apparatus according to claim 11 comprising an electric motor, the worm being coupled to the motor for rotation thereby to drive the carriage longitudinally of the body.
Claim 16
Dependent Claim
15 words
Apparatus according to claim 2 wherein the thumbwheel is axially slidably mounted on the stem.
Claim 17
Dependent Claim
51 words
Apparatus according to claim 2 wherein the thumbwheel has a driving portion to engage a driven portion of the carriage, the first means further including means for providing a braking force on the thumbwheel, manipulation of the thumbwheel overcoming the braking force on the thumbwheel to cause movement of the carriage.
Claim 18
Dependent Claim
60 words
Apparatus according to claim 2 wherein the stem includes a second thumbwheel for manipulation to rotate the stem with respect to the first means, and means for providing a braking force on the second thumbwheel, manipulation of the second thumbwheel overcoming the braking force on the second thumbwheel to rotate the stem, the second thumbwheel being accessible through the body.
Claim 19
Dependent Claim
226 words
A surgical apparatus comprising a body providing an interior, a slide slidable within the interior, a stem rotatably mounted on the slide, first means for controlling movement of the slide within the handle, second means for controlling rotation of the stem with respect to the slide, the body including means providing first and second openings, an elongated sheath, a member movable longitudinally within the sheath, the movable member including an electrically conductive portion, each of the movable member and sheath having a proximal end and a distal end, the proximal end of the sheath being attached to the body and the proximal end of the movable member extending through the first opening, a surgical instrument, and means for mounting the surgical instrument at the distal end of the movable member for protraction, retraction and rotation with respect to the distal end of the sheath in response to movement of the slide and stem, and means for providing electrical power through the conductive portion of the movable member to the surgical instrument, the power-providing means including means providing a first passageway through the stem, a first conductive portion on the movable member proximal end for insertion into the stem passageway from one end, and a second conductive portion for insertion through the second opening into the stem passageway to engage the first conductive portion in conductive engagement.
Claim 20
Dependent Claim
226 words
A surgical apparatus comprising a body providing an interior, a slide slidable within the interior, a stem rotatably mounted on the slide, first means for controlling movement of the slide within the handle, second means for controlling rotation of the stem with respect to the slide, the body including means providing first and second openings, an elongated sheath, a member movable longitudinally within the sheath, the movable member including an electrically conductive portion, each of the movable member and sheath having a proximal end and a distal end, the proximal end of the sheath being attached to the body and the proximal end of the movable member extending through the first opening, a surgical instrument, and means for mounting the surgical instrument at the distal end of the movable member for protraction, retraction and rotation with respect to the distal end of the sheath in response to movement of the slide and stem, and means for providing electrical power through the conductive portion of the movable member to the surgical instrument, the power-providing means including means providing a first passageway through the stem, a first conductive portion on the movable member proximal end for insertion into the stem passageway from one end, and a second conductive portion for insertion through the second opening into the stem passageway to engage the first conductive portion in conductive engagement.
Claim 21
Dependent Claim
54 words
Apparatus according to claim 16 wherein the first conductive portion includes a rod-like tip on the proximal end of the movable member for insertion into the distal end of the stem passageway, and the second conductive portion includes a sleeve for insertion into the proximal end of the stem passageway to engage the tip.
Claim 22
Dependent Claim
20 words
Apparatus according to claim 17 wherein the sleeve includes an opening to engage the tip in close-fitting sliding electrical contact.
Claim 23
Dependent Claim
83 words
Apparatus of claim 18 wherein the stem includes a second passageway intersecting the first passageway adjacent the proximal end of the stem, the sleeve including an opening for alignment with the second passageway when the sleeve is inserted fully into the stem first passageway; and the apparatus further including a pin for insertion into the stem second passageway, through the sleeve opening and into engagement with the tip to fix the sleeve and tip against shifting movement longitudinally of the stem first passageway.
Claim 24
Dependent Claim
40 words
Apparatus according to claim 19 wherein the tip includes a notch for alignment with the stem second passageway and sleeve opening, the pin for insertion through the sleeve opening and into the tip notch to fix the sleeve and tip.
Claim 25
Dependent Claim
30 words
Apparatus according to claim 20 wherein the pin and stem second passageway are threaded to prevent unintentional movement of the pin out of engagement with the stem, sleeve and tip.
References Cited (Backward Citations)
No citation records indexed.
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