摘要:
An apparatus for performing interstitial laser coagulation comprising, in combination, a delivery tool, a flexible cannula having a proximal end, a distal end, and outer and inner tubes which can be moved together and can slide axially with respect to each other, an actuator and a waveguide having a distal end and a proximal end, wherein the delivery tool comprises an elongated double lumen tube and a handle which includes a gripping portion and a rail, the double lumen tube comprises a first lumen adapted to receive and guide a viewing endoscope and a second lumen which accomodates the flexible cannula and waveguide and has a curved distal portion, the actuator comprises a slider and a trigger, the proximal end of the outer tube of the cannula being attached to the trigger and the proximal end of the inner tube of the cannula being attacched to the slider so that movement of the trigger and slider produces corresponding movement of the outer and inner tube, respectively, the waveguide passing through a channel in the slider and into and through the inner tube of the cannula and a space between the waveguide and the inner tube defining a passageway for liquid to be delivered to the distal end of the waveguide.
摘要:
An apparatus for performing interstitial laser coagulation comprising, in combination, a delivery tool, a flexible cannula having a proximal end, a distal end, and outer and inner tubes which can be moved together and can slide axially with respect to each other, an actuator and a waveguide having a distal end and a proximal end, wherein the delivery tool comprises an elongated double lumen tube and a handle which includes a gripping portion and a rail, the double lumen tube comprises a first lumen adapted to receive and guide a viewing endoscope and a second lumen which accomodates the flexible cannula and waveguide and has a curved distal portion, the actuator comprises a slider and a trigger, the proximal end of the outer tube of the cannula being attached to the trigger and the proximal end of the inner tube of the cannula being attacched to the slider so that movement of the trigger and slider produces corresponding movement of the outer and inner tube, respectively, the waveguide passing through a channel in the slider and into and through the inner tube of the cannula and a space between the waveguide and the inner tube defining a passageway for liquid to be delivered to the distal end of the waveguide.
摘要:
Disclosed is an apparatus for controlling the discharge of materials through a body passage. The invention comprises a fluid actuated artificial sphincter mechanism that surrounds the body passage. The artificial sphincter includes an inflatable cuff (16) surrounded by a hollow resilient C-shaped reservoir ring (18). The cuff, ring and pump (20) are in fluid communication with each other. The fluid communication between the duff and reservoir ring is controlled by a flow resistor means (49). In operation, the pump draws fluid from the cuff and diverts the fluid into a reservoir ring. By pumping the fluid from the cuff, the cuff deflates opening the body passage. Pumping the fluid into the reservoir ring increases the pressure in the ring causing the ring to open. As the ring opens the ring allows the cuff to move further away from the body passage opening the body passage further. The fluid displaced in the ring is continuously diverted from the reservoir ring back to the cuff. A flow resistor controls the flow rate of fluid back into the cuff. The resistor allows the cuff to gradually re-inflate to again occlude flow through the body passage.
摘要:
A penile prosthesis (10) implantable within the corpus cavernosum of the penis in order to alleviate erectile impotency includes a unique deflation valve mechanism (48) which provides an improved means for returning the prosthesis from the erect to the flaccid state. In its preferred embodiment the prosthesis is of a unitary type comprising a distal portion (16) including pump means (26), a medial portion (14) defining a pressurizable chamber (40) comprising an internal, tubular, substantially portion (46) and a concentric tubular sleeve (44), and a proximal portion (12) including a fluid reservoir (18), the latter being in fluid communication with the pump means. The deflation valve mechanism is activated in accordance with pressure differential conditions within said value which are dependent on fluid deferring means and a movable or distensible partition (66) capable of exerting an internal force within said valve to place said valve in an open mode, thereby effecting the deflation of the prosthesis or hydraulic system in which the valve mechanism is present. Means for extending the length of the prosthesis are also provided.
摘要:
A penile prosthesis (10) implantable within the corpus cavernosum of the penis in order to alleviate erectile impotency includes a unique deflation valve mechanism (48) which provides an improved means for returning the prosthesis from the erect to the flaccid state. In its preferred embodiment the prosthesis is of a unitary type comprising a distal portion (16) including pump means (26), a medial portion (14) defining a pressurizable chamber (40) comprising an internal, tubular, substantially portion (46) and a concentric tubular sleeve (44), and a proximal portion (12) including a fluid reservoir (18), the latter being in fluid communication with the pump means. The deflation valve mechanism is activated in accordance with pressure differential conditions within said value which are dependent on fluid deferring means and a movable or distensible partition (66) capable of exerting an internal force within said valve to place said valve in an open mode, thereby effecting the deflation of the prosthesis or hydraulic system in which the valve mechanism is present. Means for extending the length of the prosthesis are also provided.
摘要:
This invention relates to an implantable artificial sphincter system (10) for reversibly occluding a body passageway (18), which system includes occlusion means (16), pump means (12), and the unique feature of a fluid capacitor (38) disposed on a control assembly (14) for the system (10), which is capable of increasing volume under fluid pressure. The fluid capacitor (38) is connected with the occlusion means (16) in such fashion that said occlusion means (16) will remain substantially inflated during short, but significant, pressure increases, but will at least partially deflate upon the advent of prolonged but moderate pressure increases on the body passageway (18). While in its preferred embodiment no other fluid containing component is needed, if desired a volume compensator (100) can also be included in the system. A valve (26) preferably of the magnetic type can also be included for activating or deactivating the system (10).
摘要:
A device for treating leakage from an external orifice in the body of a patient which comprises a first member (1) having a body-contacting first surface (2) and an opposing second surface (3) about an aperture (4), which first surface (2) is attachable to the patient with said aperture (4) positioned over said orifice, and a second member (7) integral with said second surface (3) which second member (7) comprises a valve (17) mounted over said aperture (4), which valve (17) has a closed position which prevents leakage of fluid through the device and an open position which allows fluid to flow through said aperture (4) when desired, the closed and open positions being achievable without removing the device from the body of the patient.