Medical device and method

• US 9,186,487 B2
• Filed: 12/21/2012
• Issued: 11/17/2015
• Est. Priority Date: 11/12/1997
• Status: Active Grant

• Current Assignee: Vascular Development Corporation LLC
• Original Assignee: Genesis Technologies LLC
• Inventors: Dubrul, William R., Seybold, Brent D., Mathis, Mark L., Fulton, Richard E., Leopold, Philip M.
• Primary Examiner(s): Erezo, Darwin
• Assistant Examiner(s): Bachman, Lindsey
• Application Number:
  US13/725,871
• Publication Number:
  US 20130110152A1
• Time in Patent Office: 1,061 Days
• Field of Search: 606/200, 606113-114, 606127-128, 606/1.11, 606/108, 606/198
• US Class Current: 1/1
• CPC Class Codes: A61B 10/02 Instruments for taking cell samples or for biopsy A61B10/0038 and A61B10/0045 take precedence; needle locating or guiding means A61B17/3403; samplers for enzymology or microbiology C12M1/26; sampling or preparing biological specimens G01N33/48
• CPC Class Codes: A61B 10/0266 means for severing sample
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/22004 using mechanical vibrations, e.g. ultrasonic shock waves A61B17/225 takes precedence
• 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 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 2017/00287 Bags for minimally invasive surgery
• CPC Class Codes: A61B 2017/00955 thermoplastic
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1135 End-to-side connections, e.g. T- or Y-connections Y-shaped blood vessel prostheses A61F2002/065
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61B 2017/22079 : with suction of debris
• CPC Class Codes: A61B 2017/2212 : having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2215 : having an open distal end
• CPC Class Codes: A61B 2018/1407 : Loop
• CPC Class Codes: A61B 2090/3904 : specially adapted for marking specified tissue
• CPC Class Codes: A61B 2090/3908 : Soft tissue, e.g. breast tissue
• CPC Class Codes: A61B 2090/3962 : palpable
• CPC Class Codes: A61B 6/502 : for diagnosis of breast, i.e. mammography
• CPC Class Codes: A61B 90/39 : Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61B 90/40 : Apparatus fixed or close to patients specially adapted for providing an aseptic surgical environment
• CPC Class Codes: A61M 25/0119 : Eversible catheters
• CPC Class Codes: A61M 25/104 : used for angioplasty

Abstract

A vessel-occluding medical device for the use in diagnosis and/or treatment of cardiovascular disease in the human body includes an outer tube, an inner tube slidably housed within the outer tube, and a tubular sleeve comprising a generally U-shaped, direction reversing region, which moves along the length of the tubular sleeve, to assume radially contracted and radially expanded state as the inner and outer tubes move between the first and second positions. When the tubular sleeve is in the radially expanded state, the inner portion of the tubular sleeve has a funnel-shaped surface and a longitudinally-extending opening to permit material to pass therethrough for receipt of material into the inner tube.

Claims

1. A vessel-occluding and occlusion removal medical device for removing blockages in blood vessels for the treatment of cardiovascular disease in the human body, the device comprising:

an outer tube having a proximal end, a distal tip and a lumen extending from the distal tip towards the proximal end;

an inner tube within the lumen, the inner tube having a proximal end and a distal end, the inner and outer tubes movable between a first position, with the distal end positioned distally a first distance from the distal tip, towards one another to a second position, with the distal tip and distal end separated by a second distance, the second distance being shorter than the first distance; and

a flexible tubular metal mesh braid sleeve having a radially contracted state and a radially expanded state, the tubular sleeve comprising multiple filaments, a first end joined to the distal tip of the outer tube, a second end joined to the distal end of the inner tube, and a coating disposed within and between the multiple filaments and covering only a first portion of the tubular sleeve, thus leaving a second portion of the tubular sleeve uncoated and porous to provide variable porosity along the tubular sleeve, the uncoated second portion comprising multiple pores between multiple filaments,

wherein the tubular sleeve comprises a generally U-shaped, direction reversing region which is formed by, and which moves along the length of, the tubular sleeve when the inner and outer tubes move between the first and second positions, the direction reversing region separating the tubular sleeve into an outer portion and an inner portion and comprising a region of variable stiffness in the tubular sleeve configured to buckle more easily than the remainder of the tubular sleeve as the outer and inner tubes are moved between the first and second positions,

wherein the tubular sleeve assumes the radially contracted state when the inner and outer tubes are in the first position,

wherein the region of variable stiffness causes the tubular sleeve to tend to fold into the radially expanded state when the inner and outer tubes are in the second position,

wherein, when the tubular sleeve is in the expanded state, the outer portion of the tubular sleeve overlies and is directly opposite the inner portion of the tubular sleeve and the tubular sleeve has a funnel shape with a conical proximal funnel portion and a cylindrical distal funnel portion having a substantially constant diameter, the distal funnel portion configured to contact and exert an outward radial force onto an inner wall of a blood vessel when the tubular sleeve is placed therein, the outward radial force being sufficient to seal the tubular sleeve against the inner wall and occlude the blood vessel, and

wherein the tubular sleeve in the expanded state has a longitudinally-extending opening to permit material to pass therethrough for receipt of material into the inner tube.

2. The medical device according to claim 1, wherein the tubular metal mesh braid sleeve comprises a material selected from the group consisting of stainless steel, eligoy, nickel titanium alloy and platinum.