Valve system for introducing objects into anatomical body portions
First Claim
1. A valve assembly adapted for introduction of an elongated object into a patient'"'"'s body which comprises:
- (a) first valve means formed of a resilient material and defining an aperture for reception of the object, said aperture being configured and dimensioned such that insertion of the object into said aperture will cause the resilient material defining said aperture to resiliently engage the outer surface of the object in a substantially fluid tight manner;
(b) second valve means positioned adjacent said first valve means in general alignment therewith, said second valve means defining an aperture in general alignment with said aperture of said first valve means, and being formed of a flexible material at least in the region defining said aperture; and
(c) manually operable means to selectively permit said aperture of said second valve means to be opened or closed so as to permit entry of the object.
2 Assignments
0 Petitions
Accused Products
Abstract
A valve assembly adapted for introduction of an elongated object into a patient'"'"'s body having a first valve formed of a resilient material and defining an aperture for reception of the object, the aperture being configured and dimensioned such that insertion of the object into the aperture will cause the resilient material defining the aperture to resiliently engage the outer surface of the object in a fluid tight manner. A second valve is positioned adjacent and distal of the first valve in general alignment therewith, whereby the second valve defines an aperture in general alignment with the aperture of the first valve, and is formed of a flexible material at least in the region defining the apeture. A pair of manually operable clamps are provided to selectively permit the aperture of the second valve to be opened or closed so as to permit entry of the object such that the object first passes through the first valve and then the second valve prior to entry into the patient'"'"'s body.
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Citations
32 Claims
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1. A valve assembly adapted for introduction of an elongated object into a patient'"'"'s body which comprises:
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(a) first valve means formed of a resilient material and defining an aperture for reception of the object, said aperture being configured and dimensioned such that insertion of the object into said aperture will cause the resilient material defining said aperture to resiliently engage the outer surface of the object in a substantially fluid tight manner; (b) second valve means positioned adjacent said first valve means in general alignment therewith, said second valve means defining an aperture in general alignment with said aperture of said first valve means, and being formed of a flexible material at least in the region defining said aperture; and (c) manually operable means to selectively permit said aperture of said second valve means to be opened or closed so as to permit entry of the object.
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2. A valve assembly for introduction of a surgical instrument into a patient'"'"'s body while selectively maintaining a fluid tight seal between the inner portion of the patient'"'"'s body and the outside atmosphere, which comprises:
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(a) valve body means defining proximal inlet and distal outlet means; (b) first valve means formed of a resilient material and extending across said proximal inlet means of said valve body means, said first valve means defining an aperture configured and dimensioned for reception of the object in a manner such that resilient material surrounding aperture engages the surface of the object to provide a substantially fluid tight seal which prevents passage of fluids past the interface; (c) second valve means positioned adjacent and distally of said first valve means and extending across said proximal inlet means of said valve body means, said second valve means including an aperture defined at least in part by flexible material and in general alignment with said aperture of said first valve means and of dimension sufficient to permit passage of the object after the object is passed through said first valve means; (d) means to bias said flexible material defining said aperture of said second valve means to a configuration whereby said aperture is closed to form a fluid tight seal prior to inserting the object therethrough; and (e) means to open said aperture of said second valve means to permit passage of the object therethrough when the object is passed through said first valve means. - View Dependent Claims (3)
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4. A valve assembly for introduction of elongated objects into a patient'"'"'s body while maintaining the atmospheric integrity therein, which comprises:
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(a) valve body means defining a proximal inlet opening and a distal outlet opening; (b) first valve means formed of a flexible elastomeric resilient material and defining an aperture for reception of the object, said aperture being configured and dimensioned such that insertion of the object into said aperture will cause the flexible resilient material defining said aperture to resiliently engage and conform to the outer surface of the object in a substantially fluid tight manner; (c) second valve means positioned adjacent said first valve means in general alignment therewith, said second valve means defining an aperture in general alignment with said aperture of said first valve means, and being formed of a flexible resilient material at least in the region adjacent to and defining said aperture; and (d) manually operable means to selectively open said aperture of said second valve means whereby the object may pass therethrough. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A valve assembly for introduction of an elongated object such as a surgical instrument or the like into the body of a patient while maintaining substantial fluid tight seal between internal body portions and the outside atmosphere at all times prior to and after insertion of the object, which comprises:
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(a) a valve housing having an inlet opening at the proximal end and an outlet opening at the distal end; (b) first valve means formed of a resilient material and extending across said inlet opening of said valve housing, said first valve means defining an aperture dimensioned for reception of the object in a manner such that resilient material surrounding said aperture engages the surface of the object in conforming relation therewith to provide a substantial fluid tight seal which prevents passage of fluids past the interface; (c) second valve means formed of a resilient material and positioned adjacent said first valve means and extending across the inlet opening of said valve housing, said second valve means defining an aperture in general alignment with said aperture of said valve means and distally thereof, said distal aperture being of dimension sufficient to permit passage of the object after the object is passed through said aperture of said first valve means; (d) a pair of plate members positioned to engage the portion of said second valve means defining said distal aperture, said plate members being biased toward each other by resilient spring means to bias the resilient material surrounding said distal aperture of said second valve means to a configuration whereby said aperture is closed to form a fluid tight seal prior to positioning the object therein; and (e) manually operable means adapted to separate said plate members in a manner to open said aperture of said second valve means to permit passage of the object therethrough when the object is passed through said first valve means. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A cannula and trocar assembly for puncturing a patient'"'"'s body wall for the introduction of elongated objects such as surgical instruments or the like into the body of a patient while maintaining a substantial fluid tight seal between internal body portions and the outside atmosphere at all times prior to and after insertion of the object, which comprises:
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(a) a valve housing having an inlet opening at the proximal end and an outlet opening at the distal end, said distal end opening having a tubular cannula extending distally therefrom; (b) a trocar positioned within said valve housing and said cannula; (c) first valve means formed of a resilient material and extending across the inlet opening of said valve housing, said first valve means defining an aperture dimensioned for reception of said trocar or the object in a manner such that resilient material surrounding said aperture engages the surface of the trocar or the object to provide a substantial fluid tight seal which prevents passage of fluids past the interface; (d) second valve means of resilient material positioned distal and adjacent said first valve means and extending across the inlet opening of said valve housing, said second valve means defining an outlet aperture in general alignment with said distal aperture of said valve means and of dimension sufficient to permit passage of the trocar or object after the trocar or object is passed through said first valve means; (e) a pair of plate members positioned within said valve housing to engage the portion of said second valve means defining said aperture, said plate members biased toward each other by resilient spring means to bias the resilient material surrounding said aperture of said second valve means to a configuration whereby said aperture is closed to form a fluid tight seal prior to positioning the object therein; and (f) manually operable means adapted to separate said plate members in a manner to open said aperture of said second valve means to permit passage of the object therethrough when the object is passed through said first valve means. - View Dependent Claims (31)
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32. A method of selectively sealing a valve assembly for communication with inner portions of a patient'"'"'s body while permitting introduction of an elongated instrument therethrough, said valve assembly having a proximal inlet opening and a distal outlet opening, comprising:
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(a) providing first valve means comprised of resilient material defining an opening which permits entry therethrough by the instrument while resiliently contacting the outer surface; (b) providing second valve means distal of said first valve means; and (c) selectively controlling the open and closed condition of said second valve means to permit passage of said instrument after entry through said first valve means.
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Specification