Source: http://www.google.com/patents/US4850350?dq=60/310,746
Timestamp: 2016-12-09 07:07:05
Document Index: 757158427

Matched Legal Cases: ['art 40', 'art 32', 'art 40', 'art 32', 'art 40', 'art 32', 'arts 32', 'art 40', 'art 32', 'art 40', 'art 40', 'art 40', 'art 32']

Patent US4850350 - Closed system combined suction and ventilation devices - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsClosed system, combined suction and ventilation medico-surgical tube devices include (1) a suction catheter, (2) a suction control valve positioned at the distal end of the system, (3) a multi-port coupling unit through which the catheter is fed for aspiration of a patient, (4) a flexible tubular sheath...http://www.google.com/patents/US4850350?utm_source=gb-gplus-sharePatent US4850350 - Closed system combined suction and ventilation devicesAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS4850350 APublication typeGrantApplication numberUS 06/941,744Publication dateJul 25, 1989Filing dateDec 15, 1986Priority dateJun 23, 1986Fee statusLapsedPublication number06941744, 941744, US 4850350 A, US 4850350A, US-A-4850350, US4850350 A, US4850350AInventorsIsaac S. JacksonOriginal AssigneeSheridan Catheter Corp.Export CitationBiBTeX, EndNote, RefManPatent Citations (24), Referenced by (166), Classifications (19), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetClosed system combined suction and ventilation devices
US 4850350 AAbstract
Closed system, combined suction and ventilation medico-surgical tube devices include (1) a suction catheter, (2) a suction control valve positioned at the distal end of the system, (3) a multi-port coupling unit through which the catheter is fed for aspiration of a patient, (4) a flexible tubular sheath providing a sterility protective enclosure for the catheter fixed at its distal end to the proximal end of the coupling unit and (5) a sheath relief valve. The coupling units (4) have two separate members, one of which is fitted axially into the other so they may rotate relative to each other about their longitudinal axes to close and open access of the catheter from the sheath through the coupling unit into the patient. The suction control valves (2) have first and second substantially identical parts positioned together along a longitudinal side in sliding engagement with each other for movement between an open and a closed position of the valves. The sheath relief valves (5) serve to prevent air in the sheath from becoming contaminated during use of the assembly.
1. In a closed system, combined suction and ventilation medico-surgical tube device that includes a suction catheter, a suction control valve positioned in the proximal end of said system and being connected to the suction catheter on one end and connectable to a source of suction on the other end, a multi-port coupling unit through which said catheter is fed for aspiration of a patient and a flexible tubular sheath providing a sterility protective enclosure for said catheter fixed at its distal end to the proximal end of said coupling unit and at its proximal end to the suction control valve, the improvements comprising:a multi-port coupling unit which comprises:a first member that includes a longitudinal tubular element having a proximal end, a distal end for connection to a patient and an integral side port for connection to a ventilator, a second member that includes:a tubular distal part having a proximal end, a distal end and a major lumen extending along a first longitudinal axis at the center-line of the tubular distal part, and a separate tubular proximal part with a cross-section approximately equal to said lumen of said tubular distal part having a proximal end and distal end, said distal end of said distal part being closed except for a hole substantially smaller in size than said lumen, the center of said hole being offset a radial distance from said first longitudinal axis, a second lumen approximating the size of said hole extending through said proximal part on a second longitudinal axis offset from said first longitudinal axis approximately equal to said radial distance, said tubular proximal part of said second member being arranged to fit into said proximal end of said tubular distal part, so said parts may rotate relative to each other about said first longitudinal axis, whereby said second lumen and said hole will coincide in one position of rotation of said tubular proximal part in said tubular distal part, the tubular distal part of said second member being connected to the proximal end of said first member, a suction control valve comprising:first and second substantially identical parts positioned in sliding engagement with each other for movement between an open and a closed position of said valve, said parts having:a longitudinal body portion, a flat surface extending along a side of said longitudinally extending body portion on which said sliding engagement occurs, a tapered connector element on a longitudinal end of said body portion, a lumen extending longitudinally through said connector element part way into said body portion, limit means to fix the distance of relative movement between said identical parts from said open to said closed position, a side port through said flat surface into said connector element lumen, said side port positioned so said port of said first identical part communicates with said port of said second identical part when said parts move in longitudinal directions into the open position, and elastic means positioned about said first and second substantially identical parts to connect the flat surfaces in engagement with each other and with the connector elements facing in opposite direction and for biasing said first and second substantially identical parts longitudinally towards each other into said closed position, and means fixing said distal end of said sheath to said coupling unit. 2. The device of claim 1 wherein said coupling unit includes a port through the side of said proximal part connecting to said second lumen.
This is a continuation-in-part of application Ser. No. 878,074, filed June 23, 1986, now abandoned.
A principal object of the invention is the provision of improved forms of closed system, combined suction and ventilation medico-surgical tube devices.
The objects are accomplished, in part, in accordance with the invention by the provision of unique improvements in closed system, combined suction and ventilation medico-surgical tube devices that include a suction catheter, a suction control valve positioned in the distal end of the system, a multi-port coupling unit through which the catheter is fed for aspiration of a patient and a flexible tubular sheath providing a sterility protective enclosure for the catheter fixed at its distal end to the proximal end of the coupling unit.
Referring in detail to the drawings, in which identical parts are identically marked, the closed system, combined suction and ventilation medico-surgical tube device 2 includes a suction catheter 4, a suction control valve 6 positioned in the proximal end 8 of the device 2, a multiport coupling unit 10 through which the catheter is fed for aspiration of a patient and a flexible tubular sheath 12 providing a sterility protective enclosure for the catheter 4 fixed at its distal end 14 to the proximal end 16 of the coupling unit 10. The device 2 also includes an endotracheal tube 18.
The proximal part 40 and distal part 32 may be molded of plastic, e.g., polypropylene, polyethylene, polycarbonate, polyvinyl chloride, A.B.S resin, etc. Such plastics will yield a few thousands of an inch when part 40 is pressed into part 32. When their molded interference portions have cleared each other, they become retention shoulders to lock the parts together in rotational engagement. Thus, the part 40 is made to dimensions which allow it to rotate freely in part 32 when fully assembled therein. A silicone grease can be applied as a lubricant and seal between parts 32 & 40. In one rotational position of part 40 relative to part 32, the hole 46 is aligned with the lumen 48 creating a passageway for the catheter 4. When part 40 is rotated, e.g., 180°, hole 46 and lumen 48 are no longer aligned so the portion of the assembly 2 distal of the part 40 is closed off from the sheath enclosure 74 and catheter 4. Thus, part 40 acting as a male part and distal part 32 as a female part together constitute a rotary valve V.
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