US Patent No: 5,125,902

Number of patents in Portfolio can not be more than 2000

Sheath/obturator to facilitate insertion of medical devices into a patient's venous system

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Importance

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Abstract

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A sheath and obturator is provided for facilitating the insertion of certain medical devices into a patient's vascular system, a vein, or venous system and in particular an in vivo extrapulmonary blood gas exchange device having a bundle comprised of a plurality of elongated gas permeable tubes being potted at each end and enclosed within a respective air tight proximal and distal chamber. The sheath is hollow and substantially tubular with a tapered receiving portion and a nontapered, curved entry portion. The obturator has a tip at the distal end of the obturator and a trip at the proximal end with an elongate member therebetween. The sheath is configured to receive the obturator in sliding engagement such that when the obturator is fully inserted within the sheath, the tip closes the opening at the entry end of the sheath and protrudes slightly therefrom. The obturator has a vent which provides a passage from space exterior to the sheath into the hollow interior of the sheath. The sheath and obturator are inserted into the patient through a single incision. Upon removal of the obturator from the sheath, a extrapulmonary blood gas exchange device may be inserted into and through the sheath into one of the right external iliac, common femoral or internal jugular veins, and then into the vena cavae where the elongate gas permeable tubes may be deployed for blood oxygenation.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
BIOSURFACE ENGINEERING TECHNOLOGIES, INC.ROCKVILLE, MD33

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baldwin, Mitchell D Salt Lake City, UT 2 52
Berry, Gaylord L Salt Lake City, UT 7 412
Mortensen, J D Sandy, UT 11 549
Rigby, Larry D Salt Lake City, UT 3 122

Cited Art Landscape

Patent Info (Count) # Cites Year
 
FRESENIUS AG (1)
4,565,544 Device for introducing a catheter 16 1984
 
LAKE REGION MANUFACTURING COMPANY, INC. (1)
4,854,330 Formed core catheter guide wire assembly 109 1988
 
PHILIP S. JOHNSON;JOHNSON & JOHNSON (1)
4,205,675 Catheter placement unit with needle removal provision and method of use 60 1978
 
Other [Check patent profile for assignment information] (3)
4,684,369 Instrument for suprapubic drainage of the bladder, inserted through the urethra 24 1985
4,869,718 Transcricothyroid catheterization device 44 1988
4,961,729 Catheter insertion assembly 142 1988

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
C.R. BARD, INC. (2)
6,394,996 System for aspirating and irrigating tract wounds 28 1997
6,878,142 System for aspirating and irrigating tract wounds 9 2001
 
Cannuflow, Inc. (2)
5,527,276 Flexible inflow/outflow cannula 31 1994
5,800,409 Flexible inflow/outflow cannula 65 1996
 
Franco, Kenneth L. (2)
6,936,222 Methods, apparatuses, and applications for compliant membrane blood gas exchangers 1 2002
8,409,502 Methods, apparatuses, and applications for compliant membrane blood gas exchangers 1 2005
 
NOVALUNG GMBH (2)
7,641,853 Intravenous oxygenator 0 2003
8,419,674 Intravenous oxygenator with impermeable sheath and wire grate 0 2009
 
NOVOSTE CORPORATION (2)
5,509,908 Angular sheath introducer 11 1994
D374076 Sheath introducer 0 1994
 
GALT MEDICAL CORPORATION (1)
D532513 Handle for an introducer sheath 4 2004
 
MEDTRONIC AVE, INC. (1)
5,454,785 Method of withdrawing and exchanging catheters 9 1993
 
SCITEC K.K. (1)
7,022,110 Needle for medical use 2 2003
 
United States Surgical Corporation (1)
5,450,842 Endoscopic surgical retractor 39 1993
 
Other [Check patent profile for assignment information] (2)
6,645,178 Apparatus for inserting medical device 23 1998
8,888,747 Catheter assembly with vents 0 2006