LOW ADVANCE RATIO, HIGH RECIPROCATION RATE TISSUE REMOVAL DEVICE

• US 20090270895A1
• Filed: 04/29/2009
• Published: 10/29/2009
• Est. Priority Date: 04/06/2007
• Status: Abandoned Application

• Current Assignee: Hologic Incorporated
• Original Assignee: Interlace Medical, Inc. (Hologic Incorporated)
• Inventors: Churchill, William Lucas, Adams, Ronald David, Sullivan, Roy Hewitt, Litscher, Eric Karl, Chin, Albert Chun-Chi, Gruber, William Harwick
• Application Number:
  US12/432,675
• Publication Number:
  US 20090270895A1
• Time in Patent Office: Days
• US Class Current: 606/170
• CPC Class Codes: A61B 1/303 for the vagina, i.e. vaginoscopes
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/3201 Scissors for biopsy A61B10/02
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 17/320783 through side-hole, e.g. sliding or rotating cutter inside catheter
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3462 with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals expandable cannulas A61B17/3417
• CPC Class Codes: A61B 17/3496 Protecting sleeves or inner probes; Retractable tips for protecting body piercing guide needles A61M25/0612
• CPC Class Codes: A61B 17/3498 Valves therefor, e.g. flapper valves, slide valves haemostasis valves A61M39/06; check valves A61M39/24
• CPC Class Codes: A61B 17/42 Gynaecological or obstetrical instruments or methods ligaturing clamps or clips for the umbilical cord A61B17/122; curettage A61B17/320708; dilators A61M29/00
• CPC Class Codes: A61B 2010/0208 Biopsy devices with actuators, e.g. with triggered spring mechanisms
• CPC Class Codes: A61B 2017/00331 with preformed bends
• CPC Class Codes: A61B 2017/00685 Archimedes screw
• CPC Class Codes: A61B 2017/00738 part of the tool being offset with respect to a main axis, e.g. for better view for the surgeon
• CPC Class Codes: A61B 2017/00973 pedal-operated
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/320004 : abrasive
• CPC Class Codes: A61B 2017/320028 : with reciprocating movements
• CPC Class Codes: A61B 2017/320064 : with tissue or sample retaining means
• CPC Class Codes: A61B 2017/320775 : Morcellators, impeller or propeller like means
• CPC Class Codes: A61B 2017/3445 : used as instrument channel for multiple instruments catheters A61B2017/22072
• CPC Class Codes: A61B 2017/3447 : Linked multiple cannulas
• CPC Class Codes: A61B 2017/3466 : for simultaneous sealing of multiple instruments
• CPC Class Codes: A61B 2017/4216 : Operations on uterus, e.g. endometrium
• CPC Class Codes: A61B 2018/1407 : Loop
• CPC Class Codes: A61B 2217/005 : with suction drainage system
• CPC Class Codes: A61B 2217/007 : with irrigation system
• CPC Class Codes: A61B 8/12 : in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 90/30 : Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
• CPC Class Codes: A61M 1/842 : rotating continuously rotating surgical cutting instruments A61B17/32002

Abstract

Disclosed is a tissue removal device having an outer tube with a resection window and an inner tube disposed within the outer tube. The inner tube is slidable and rotatable relative to the outer tube so that the distal end of the inner tube moves back and forth across the resection window to sever tissue extending therethrough. The inner tube may be driven to rotate at a speed of at least about 1100 rpm, to axially translate at a rate of at least about 1.5 cps, and with an advance ratio of no more than about 0.25. The drive system for controlling axial reciprocation and rotation of the inner tube may be totally mechanical.

Claims

1. A tissue removal device comprising:

(a) a housing;

(b) an outer tube, the outer tube being fixed to the housing and extending distally therefrom, the outer tube including a resection window;

(c) an inner tube disposed within the outer tube, the inner tube being slidable and rotatable relative to the outer tube so that the distal end of the inner tube moves back and forth across the resection window to sever tissue extending therethrough;

wherein

the inner tube is driven to rotate at a speed of at least about 1100 RPM;

to axially translate at a rate of at least about 1.5 cps; and

with an advance ratio of no more than about 0.25.

2. A tissue removal device with a totally mechanical drive system wherein drive power is provided by a mechanically stiff flexible drive member and rotational and axial reciprocal movements are provided by a mechanical drive transmission with an advance ratio of no more than about 0.25.