Device for dilating the urethra of the body of a patient and device for removing prostate tissue

• US 8,603,187 B2
• Filed: 05/07/2008
• Issued: 12/10/2013
• Est. Priority Date: 05/07/2007
• Status: Active Grant

• Current Assignee: Medi-Tate
• Original Assignee: Medi-Tate
• Inventors: Kilemnick, Ido, Loebl, Oded
• Primary Examiner(s): Holwerda, Kathleen
• Assistant Examiner(s): ALEMAN, SARAH WEBB
• Application Number:
  US12/598,996
• Publication Number:
  US 20100137893A1
• Time in Patent Office: 2,043 Days
• Field of Search: 606/110, 606/113, 606/170, 606/180, 606/190, 606/191, 606/198, 606/200, 606/151, 606/157, 623/23.66, 600/562, 600/570
• US Class Current: 623/23.66
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• 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 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 18/02 by cooling, e.g. cryogenic techniques devices for cooling specific reflex points of the body within cell-life limits A61H39/06
• CPC Class Codes: A61B 18/08 by means of electrically-heated probes
• CPC Class Codes: A61B 18/082 Probes or electrodes therefor
• CPC Class Codes: A61B 2017/00274 Prostate operation, e.g. prostatectomy, turp, bhp treatment
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2945 Curved jaws
• CPC Class Codes: A61B 2017/320733 with a flexible cutting or scraping element, e.g. with a whip-like distal filament member
• CPC Class Codes: A61B 2017/32096 for slowly cutting through tissue, e.g. stent like temporary implants having sharp edges
• CPC Class Codes: A61B 2018/00547 Prostate
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/0262 using a circulating cryogenic fluid
• CPC Class Codes: A61B 2018/044 the surgical action being effected by a circulating hot fluid
• CPC Class Codes: A61B 2018/046 in liquid form
• CPC Class Codes: C08L 2201/12 Shape memory

Abstract

Device for removing prostate tissue from within the urethra, the device including a plurality of arms, and an actuating mechanism coupled to the arms, the arms being rotatable about a longitudinal axis of the urethra, the arms being divided into arm pairs, each of the arm pair being apart from each other in a first configuration and attempting to get closer to each other, in a second configuration, wherein the device is inserted in the urethra toward the prostate, in the first configuration, and wherein after the device is placed adjacent to the prostate, within the urethra, the actuating mechanism moves the arms to the second configuration, thereby pinching the prostate through the urethra.

Claims

1. An implantable device for removing prostate tissue from within the urethra, the implantable device is delivered by a delivery system into the urethra, when positioned within the urethra the implantable device disengages from the delivery system, the implantable device comprising:

a plurality of arms, partially rotatable about a longitudinal axis of the urethra, said arms being divided into pairs of paired arms, each of said paired arms of each of said pairs being apart from each other in a first configuration and being adjoined against each other such that they restrict further rotation of each other, in a second configuration; and

an actuating mechanism coupled to said arms,

wherein said device is inserted in the urethra toward said prostate, in said first configuration and

wherein after said device is placed adjacent to said prostate, within said urethra, said actuating mechanism moves each of said paired arms of each of said pairs toward each other until each of said paired arms adjoin each other and restrict further rotational movement of each other, thereby each of said pairs pinches said prostate through said urethra for inducing ischemia and necrosis in the pinched tissues.

2. The device according to claim 1, wherein each of said rotatable arms is in the form of a non-cutting device, having a blunt edge, and wherein rotatable arms of said second configuration apply a compression force on an enlarged portion of said prostate, to prevent blood flow to said enlarged portion.

3. The device according to claim 1, wherein each of said plurality of arms partially rotates about said longitudinal axis, without completing a full rotation about said longitudinal axis.