Benign prostatic hyperplasia surgical system featuring mechanical coring probe with live aspiration

• US 8,603,123 B2
• Filed: 04/27/2009
• Issued: 12/10/2013
• Est. Priority Date: 04/28/2008
• Status: Active Grant

• Current Assignee: Urotech, Inc. (Urology Healthcare Group, Inc.)
• Original Assignee: Urotech, Inc. (Urology Healthcare Group, Inc.)
• Inventors: Todd, Michael Edward
• Primary Examiner(s): MCEVOY, THOMAS M
• Application Number:
  US12/430,532
• Publication Number:
  US 20090270791A1
• Time in Patent Office: 1,688 Days
• Field of Search: 606/159, 606/169, 606/170, 606/171, 606/180, 606 79- 85, 606/172, 606/173, 606/174
• US Class Current: 606/167
• CPC Class Codes: A61B 1/07 using light-conductive means, e.g. optical fibres
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/00274 Prostate operation, e.g. prostatectomy, turp, bhp treatment
• CPC Class Codes: A61B 2017/00907 for light
• CPC Class Codes: A61B 2017/12004 for haemostasis, for prevention of bleeding
• CPC Class Codes: A61B 2017/32004 having a laterally movable cutting member at its most distal end which remains within the contours of said end
• CPC Class Codes: A61B 2018/00023 closed, i.e. without wound contact by the fluid
• CPC Class Codes: A61B 2018/00547 Prostate
• CPC Class Codes: A61B 2018/00595 Cauterization
• CPC Class Codes: A61B 2018/00607 Coagulation and cutting with the same instrument
• CPC Class Codes: A61B 2090/036 abutting on tissue or skin
• CPC Class Codes: A61B 2090/309 using white LEDs
• CPC Class Codes: A61B 2090/3614 using optical fibre
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61M 1/84 Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 13/00 Insufflators for therapeutic or disinfectant purposes , i.e. devices for blowing a gas, powder or vapour into the body hand-held units in which gas flow is produced by muscular energy at the moment of use B05B11/062
• CPC Class Codes: A61M 13/003 : Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing
• CPC Class Codes: A61M 2025/105 : having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
• CPC Class Codes: A61M 25/0082 : Catheter tip comprising a tool
• CPC Class Codes: A61M 39/28 : Clamping means for squeezing flexible tubes, e.g. roller clamps tube strippers A61M1/83

Abstract

The invention comprises an atherectomy probe for mechanically cutting core prostatic tissue to alleviate the condition of benign prostatic hyperplasia (BPH) or for use in orthopedic procedures. The blade shapes and lengths are adaptable but in a preferred embodiment the device includes an end-cutting bur tip. The cutting motion may be one of: guillotine (incising between two parallel edges), radial reciprocating (changing radial directions and cuts between two horizontal edges), circular (continuously radial in one direction), and end-cutting, etc. The power source used to drive the blade may be one of: pneumatic, hydraulic, manual mechanical, electrical, solar, etc. The probe also includes several channels that may be used for providing live aspiration and removal of severed tissue and fluids, as well as insufflation of gases and optionally, pharmaceuticals and/or a secondary therapy. The instrument is designed for use in open, endoscopic, and minimally invasive transurethral or transperineal surgical procedures.

Claims

1. A probe of configured for transperineal insertion into a prostate for mechanically cutting comprising:

a cutting core disposed in a housing, the cutting core having at least one sharp curved edge located in a distal region of the cutting core for cutting, the cutting core also having a channel formed therein for providing aspiration of fluid and bodily material while the sharp curved edge is cutting;

the housing disposed around the cutting core, the housing having one or more openings or portals in a distal region thereof, at least one opening or portal being at least partially open at all times during the aspiration of fluid and bodily material;

a transparent sheath disposed around the housing, the sheath having a plurality of grooves therein;

a handpiece on an outside of a proximal end of the probe, the handpiece disposed around and receiving the cutting core and the housing; and

a cone having a truncated cone configuration disposed inside a distal region of the handpiece within an inner surface of the handpiece, wherein the aspiration channel of the cutting core, the housing, and the sheath are received by and extend distally from the cone, the cone having a chamber therein for supplying the plurality of grooves in the sheath with fluid.

2. The probe of claim 1, further comprising:

an aspiration pipe, defined as a proximal portion of the cutting core within the handpiece, the aspiration pipe received by and extending proximally from the cone; and

a piston disposed around the aspiration pipe and configured for driving the cutting core, a first end of the piston having a spring and a second end of the piston having a stroke stop, wherein the spring is configured for providing a return force and the stroke stop is configured for maintaining a space for air pressure to drive the piston.

3. The probe of claim 2, further comprising a pneumatic air supply pipe within the handpiece and terminating at the space maintained by the stroke stop for air pressure to drive the piston, the pneumatic air supply pipe configured to supply air to drive the piston.

4. The probe of claim 1, further comprising a plurality of pipes disposed within the handpiece, at least one of the plurality of pipes received by and extending proximally from the cone.

5. The probe of claim 4, the plurality of pipes including a visualization pipe, an infusion pipe, and an aspiration pipe;

each of the visualization pipe, the infusion pipe, and the aspiration pipe being received by and extending proximally from the cone;

wherein the infusion pipe is configured to deliver fluid to the chamber of the cone for supplying the plurality of grooves in the sheath with fluid.

6. The probe of claim 5, wherein the cutting core is a portion of the aspiration pipe distal to the cone.

7. The probe of claim 1, the cone having at least one indentation on a surface thereof configured to mate with a corresponding protrusion on an inner surface of the handpiece to hold the cone in position within the handpiece.