US 5,320,627 AGranted

Method and device for intracorporeal device for intracorporeal morselling of tissue and/or calculi during endoscopic surgical procedures

AssigneeEndomedix, Inc.

InventorsJohn T. Sorensen, John Crease, Edmund E. Spaeth, Joseph F. Rondinone

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Abstract

A method and device for reducing the size of tissues and/or other materials contained within an intracorporeally positioned organ or artificial containment sac. In one embodiment, the device comprises an elongate cutting tool having a rotatable cutting head or impactor positioned on the distal end of the tool and, optionally, having one or more aspiration/infusion lumens extending longitudinally through the elongate shaft of the tool. In a second embodiment, the device may comprise (a) a separate guide/aspiration/infusion cannula initially insertable into the organ or sac and (b) a separate elongate cutting device which is insertable through and extractable from the prepositioned guide/aspiration/infusion cannula. An automatically deployable protective assembly may be positioned at the distal tip of either embodiment of the device so as to form a protective cage around the rotatable cutting head or impactor. Such protective cage is configured to prevent the cutting head or impactor from causing damage to the surrounding organ or sac. This invention also includes an artificial containment sac which may be inserted into a body cavity through a natural opening or small incision and which may subsequently be utilized as a bag-like container for tissues, organs, tumors, calculi or other materials which are to be treated by the device of the invention and removed from the body.

Claims36

Dependent claims

A device for morselling material contained within an intracorporeally positioned sac, said device comprising:

a tubular cannula insertable through a body opening into the sac, said cannula having a proximal end, a distal end and at least one lumen extending longitudinally therethrough;
an elongate cutting tool having a rotating cutting head mounted thereon, said cutting tool being insertable through said cannula such that the rotating cutting head is adjacent the distal end of said cannula;
a drive motor connected to said cutting tool for rotationally driving said cutting head to effect morsellation of material which comes into contact with said cutting head;
a rigid protective assembly on the distal end of said cannula, said protective assembly comprising a plurality of rigid tip members movably connected to said cannula and alternately moveable between (i) a "closed" configuration wherein said rigid tip members extend generally forward of the distal end of said cannula and (ii) a "splayed" configuration wherein said tip members diverge apart from one another and outwardly from said closed configuration such that said tip members are spaced apart from one another and form a protective assembly beyond the distal end of said cannula;
said protective assembly being constructed relative to said elongate cutting tool such that, when said elongate cutting tool is inserted through said cannula, said cutting tool will engage and push the protective assembly from its "closed" configuration to its "splayed" configuration, said device including means for limiting the advancement of said rotating cutting head beyond a fully advanced operative position whereat said rotating cutting head is proximal to a distal end of said protective assembly when said protective assembly is in said splayed configuration.

2 more elements

A device insertable through an opening in a mammalian body to effect morselling of matter within said mammalian body, said device comprising:

a tubular cannula insertable through said opening, said cannula having a proximal end, a distal end, a longitudinal axis, and at least one lumen extending longitudinally therethrough;
a protective assembly formed on the distal end of said cannula, said protective assembly being alternately moveable between a "closed" configuration wherein said protective assembly is sufficiently compact to be inserted through said opening and a "splayed" configuration wherein said protective assembly diverges outwardly from the longitudinal axis of said cannula to define a protective zone within said protective assembly and proximal to a distal end of said protective assembly beyond the distal end of said cannula;
an elongate morselling apparatus having a distal end whereon a moving head is positioned;
said morselling apparatus being configured relative to said protective assembly such that the act of inserting said morselling apparatus through said cannula causes said protective assembly to move from said "close" configuration to said "splayed" configuration;
and
said morselling apparatus being insertable, distal end first, into the proximal end of said tubular cannula and advanceable threrethrough, said device including means for limiting the advancement of said moving head beyond a fully advanced operative position whereat said moving head is proximal to the distal end of said protective assembly within said protected zone.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/032,756Filed 17 Mar 1993 · continuation
Priority: 9 Jan 1991
Granted: 14 Jun 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61B 17/32002
Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes: with continuously rotating, oscillating or reciprocating cutting instruments
A61B 17/00234
Surgical instruments, devices or methods: for minimally invasive surgery
A61B 2017/00287
For minimally invasive surgery: bags for minimally invasive surgery
A61B 2017/320775
With a rotating cutting instrument, e.g. motor driven: morcellators, impeller or propeller like means