摘要:
A continuous flushing catheter includes a valve comprising a relatively rigid central portion (24) and a flexible outer portion (19) surrounding said central portion (24). The valve has a sealing surface (26) which engages the central portion (24) around its whole circumference in liquid sealing relationship. A pair of integral lever arms transmit a shape-deforming force to the flexible outer portion (19) to lift a portion of the sealing surface (26) out of contact with the rigid cylinder (24), to permit passage of liquid through said valve.
摘要:
The present invention discloses a medical valve comprising: a valve stem including a lumen, the lumen extending along a longitudinal axis of the valve, wherein a radially outer surface of the valve stem includes a first aperture and a second aperture, wherein the lumen is in fluid communication with the first aperture and the second aperture, and wherein a proximal seal, a one-way seal, and three distal seals are disposed on the outer surface of the valve stem, wherein the first aperture is between the proximal seal and the one-way seal, and wherein the second aperture is between a first of the three distal seals and a second of the three distal seals; and an operation portion, including: a stationary portion; a movable portion which is movable relative to the stationary portion and fixed relative to the valve stem; a cap seal disposed between the stationary portion and the movable portion; and a biasing member; wherein movement of the movable portion in a first direction causes deformation of the biasing member, such that a restorative force of the biasing member urges movement of the movable portion in a second direction opposite the first direction, and wherein a frictional force between the cap seal and one of the stationary portion and the movable portion resists the movement of the movable portion in the second direction.
摘要:
A dilation system (10) comprising a speculum (20) with a body and at least one jaw (24,26) pivotally attached to the body; and a sheath (30) that is attached on the body around the at least one jaw, and expandable from a constricted position to an expanded position. A dilation comprising: at least one proximal ring (133P) spaced apart from at least one distal ring (133D); a plurality of longitudinal ribs (32) spanning between each of the proximal and distal rings; and a web (34) spanning between at least each of the plurality of ribs, wherein the sheath is expandable from a constricted position to an expanded position. Related methods are also disclosed.
摘要:
A feeding tube assembly for insertion and delivery of nutrients into an alimentary canal is disclosed. A method of facilitating the use of the feeding tube with an insufflation device is also disclosed. The feeding tube assembly has a feeding tube with opposite proximal and distal ends, a feeding passage extending between the proximal and distal ends, an outlet proximate the distal end and in fluid communication with the feeding passage, a port at the proximal end and in fluid communication with the outlet; and an air insufflation device fluidly connectable to the port comprising a compressible air bulb having a bulb inlet and a bulb outlet; an inlet check valve at the bulb inlet, an outlet check valve at the bulb outlet, and a relief valve fluidly connected to the bulb outlet.
摘要:
A switching valve assembly for an endoscope (10) has a cylinder (50) and a piston unit (51) , which includes a valve head (51b) , a flow channel (71, 72), an end rod (51a) and a button device (43, 47). The piston unit is settable in an initial position, a down position and a halfway position to change over flow lines (28, 46). A biasing unit (52) of a two-stage type is secured to the cylinder on an upper side of the cylinder passage, biases the piston unit, and stops the piston unit in the halfway position when the button device is pushed in a downward direction from the initial position. A first regulating device (67, 102) prevents the piston unit from rotating relative to the biasing unit. A second regulating device (64, 94) prevents the biasing unit from rotating relative to the cylinder, so as to ensure alignment of a channel opening of the flow channel with one of the flow openings upon sliding the piston unit.
摘要:
According to some embodiments of the invention there is provided a colon cleaning system comprising: a working channel, a vacuum source, a separate vacuum pipe provided alongside the working channel, and a sensor positioned at a conduit connected externally to the working channel, the sensor configured for providing an indication related to pressure within at least a segment of the working channel. In some embodiments, the system comprises a controller configured for controlling one or more parameters of a vacuum induced in the separate vacuum pipe, the parameter determined according to the pressure related indication provided by the sensor.
摘要:
A fluid plug unit includes a cylinder connected to a first conduit and a second conduit such that the first conduit and the second conduit communicate with each other, and a piston configured execute switching between a first position where leakage of a fluid in the first conduit to an outside is suppressed, and a second position where the fluid is sucked by a suction device via the first conduit and the second conduit. The fluid plug unit includes a first passage configured to communicate with the first conduit and the second conduit when the piston is disposed in the first position, and to shut off communication with the first conduit when the piston is disposed in the second position, and a second passage configured to shut off communication with the first conduit when the piston is disposed in the first position, and to communicate with the first conduit and the second conduit when the piston is disposed in the second position.
摘要:
A separator unit 21 is a cleaning auxiliary tool to be inserted into an air/water feeding cylinder 14. The separator unit 21 includes a partition plate 27 for partitioning an air feeding conduit 11 side and a water feeding conduit 12 side, and two elastic members 32b and 32d in an air/water feeding cylinder 14. The two elastic members 32b and 32d are arranged at an outer circumferential side of the partition plate 27. When an internal pressure on the air feeding conduit 12 side corresponds to an internal pressure on the water feeding conduit 11 side, the elastic members are spaced apart from an inner wall of the air/water feeding cylinder 14 by a predetermined distance, and when one of the internal pressures on the air feeding conduit 11 and the water feeding conduit 12 becomes higher than the other, one of the elastic members is deformed by receiving the higher internal pressure and comes in close contact with the inner wall of the air/water feeding cylinder 14.