GB2446668A

GB2446668A - Rotating valve assembly

Info

Publication number: GB2446668A
Application number: GB0710623A
Authority: GB
Inventors: Michael Ross Kessel; Paul Neville Adams; Steven Lyle Weir; Henry Bolanos
Original assignee: Axial Technologies Ltd
Current assignee: Axial Technologies Ltd
Priority date: 2003-05-29
Filing date: 2004-05-28
Publication date: 2008-08-20
Anticipated expiration: 2024-05-28
Also published as: WO2004106782A3; AU2004243889A1; DE112004000971T5; BRPI0410822A; GB2419655B; EP1634004A4; GB0710623D0; WO2004106782A2; JP2007517166A; EP1634004A2; AU2004243889B2; GB0525994D0; CA2527095A1; GB2446668B; GB2419655A; KR20060006974A; JP4668918B2

Abstract

A valve 100 includes a valve housing having an upper body portion 20 and a lower body portion 30 and a generally spherical valve member 50. The upper and lower body portions of the housing define an internal chamber 16 for accommodating the valve member 50 and a central axis for the valve. The valve member 50 is seated within the internal chamber of the valve housing and has an axial bore 52 extending therethrough. The valve member is movable between an open position where the axial bore of the valve member is axially aligned with the inlet and outlet ports of the valve housing, and a closed position where the axial bore of the valve member is out of alignment with the inlet and outlet ports of the valve housing. A camming mechanism for moving the valve member between the open and closed positions includes cam lobes 60a, 60b on valve member 50 and cam pin 22 that extends radially inwardly from an interior surface of the upper body portion 20.

Description

R.OTATII4G VALVE ASSEMBLY

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims pnority to New Zealand Provisional Patent Application Serial No. 526158, filed May 29, 2003, entitled "Rotating Scaling Mcchrnism" and U.S. Provisional Patent Application Seiial No. 6C,,..... .. _ ctober 31, 2003, entitled "Valve Assembly for Surgical Access Device", the disclosures of each arc herein incorporated by reference in their entirety.

BACKGROUND OF TEE INVENTION

1. Field of the Invention

The subject invention relates generally to the field of sealing me i1ims, and more particularly to, a compact valve assembly for use in a variety of applications, which includes a valve member that is readily actuated between the open and the closed position by a can1ning mechanism.

2. Back2round of the Related Art Ball valves are well known to those skilled in the art and are commonly used in a variety of applications and industries. Typically, in applications that concern controlling the flow of a fluid, an apertured ball valve is selected. In an apertured bail :. valve, a generally spheical valve member that has a flow aperture or passage formed * S..

aS.... therethrough is positioned for rotational movement within a valve housing. The valve S...

* opation or function.is brokcà down into two separate stages. First, the ball moves :.. between an open and a closed position by rotating through 90 degrees, such that the. *S.

aperture or flow passage moves from an orientation coaxial with the flow direction, * i.e. whenthevalve is open, to apositionwhereby thebaii aperture is normal or a..

S

peipenclicu.lar to the flow direction. Second, the valve seals in the closed position to prevent flow through the aperture across the bail valve. Therefore, the on -off cono1 of flow through the valve is achieved by rotating the ball through 90 degrees within the valve housing.

In prior art ball valves; the rotation of the ball (Le., valve member) is typically effectuated by an actuator mechanism that protrudes from the valve housing and is configured to rotate about an, axis perpendioular to that of the valve flow. Such a valve is disclosed inU.S. Patent No. 6,695,285 to Hotton at al. Sevemi disadvantages are associated with this type of ball valve. For example, the extension of an actuator from the idewall of the valve is cumbersome and not desirable for applications where space limitations and physical access to the actuator are a concern. Still further, the actuator in these valves must be rotated or turned through at least 90 degrees in order for the valve to move between the fully open and fully closed posilions.

Therefore, it would be beneficial therefore, to provide a valve/seal mechanism thatis compact, reliable and readily actuated between the open and closed position and actuated with a minimal amount of rotational movement.

SUMMARY OF TH INVENTION

The subject application is directed to a valve/seal assembly that is adapted for * S..

S use m a variety of applications, such as for example, medical, consumer beverage, *S*.

* pharmaceutical containers, automobile, household appliance and marine. The disclosed valve includes, inter alia, a valve housing having an upper body portion and Sa a lower body portion and a generally spherical valve member. The upper and lower * S. :.. body portions of the housing define an internal chamber for accommodating the valve * *S*

S

member aiad a central axis for the valve. The housing also has axially aligned inlet and outlet ports formed in the upper and lower body portions, respectively.

The generally spherical valve member is seated within the internal chamber of the valve housing and has an axial bore extending theretbrougb.. The valve member is mounted for movement between an open position; wherein the axial bore of the valve member is axially aligned with the inlet and outlet ports of the valve housing, and a closed position whcxein the axial bore of the valve member is out of alignment with the inlet and outlet porn of the valve housing. Preferably, the valve member moves between the open position and the closed position when the upper body po riion of the housing is rotated about the central axis between about 57 degrees and about 77 degrees with respect to the lower body portion. Itis presently envisioned that the valve member is mousted for axial rotation within the interior chamber about an axis extending perpendicular to the central axis defined by the upper and lower body portion of the valve housing.

Preferably, the valve member includes a sealing surface adapted for sealing engagement with a valve seat formed in the housing when the valve is in the closed position. In appliontions where a pressure is applied to the fluid or air metered by the valve, the sealing surface of the valve member is adapted to include an annular recess having an o-ring disposed therein.

: * The valve assembly further includes a mechanism that is operatively * associated with th valve housing and the valve member for moving the valve **S.

: member between the open post on and the closed position when the upper body portion of the housing is sutated about the cential axis with respect to the lower body S..

portion. In a preferred embodiment, the mechanism for actuating the valve assembly * S. is a caixixuing mechanism.

S *S.

S

In a present embodiment, the cimrning mechanism includes cam surfaces formed on the exterior surface of the valve member and a cam pin formed on the intenor surface of the upper body portion of the housing. It is envisioned that the cam surfaces formed on the exterior surface of the valve member are defined by a pair of cain lobes formed at angles to one another. The cam lobes can be arcuate or linear in configuration.

In a flurther embodiment of the present invention, the carnming mechanism includes at least one arcuate recess formed on the exterior surface of the valve member and a cam pin formed on the interior surface of the upper body portion of the housing for engaging with the cam recess.

In a preferred embodiment, the housing for the valve assembly includes means associated with the inlet port for engaging the valve with a receptacle or tubing.

Additionally, if desired, the housing can iecludes means associated with the outlet port for engaging the valve with a receptacle or tubing.

In applications that require the valve to include a tamper-proof feature to ensure thc purity of the substance contained within the bore of the valve member or in the receptacle or container, upon which the valve is axed to, the valve further includes a frangible ring engaged with exterior of the valve housing to provide a visual indication of whether the valve has been opened. Alternatively or in : S combination, the valve can include a frangible sealing disc inserted into the interior * clamber of the valve to again provide a visual indication of whether the valve has * ** been opened. This scaling disc also functions as a secondary seal for the valve until * * S S..

its initial use. In this embodiment, it is envisioned that the valve member includes a *5* mechanism for puncturing the disc when ihe valve is opened. For example, a sharp * *5 * . . *IS.

S

protuberance can be formed on the bottom of the valve member which cuts the sealing disc when the valve is moved from the closed to the open position.

In an alternative embodiment, the axial bore of the valve member is adapted and configured for receiving and storing an article of manufacture when the valve is in the closed position. For example, an award or small prize may be stored in the bore and revealed when the valve is opened. Still further, the valve could be mounted to a water bottle and the bore of the valve could contain a vitamin or supplement which is dropped into the water when the valve is opened.

It is further envisioned that the valve can include a mechm,ism associated with the valve housing for facilitating the axial rotation of the upper body portion of the housing relative to the lower body portion.

In an alternative embodiment, a plurality of flow passages are formed in the valve member and extend therethrougb along an axis that is perpendicular to the axial bore such that when the valve is in the closed position, fluid or air ttaverses the valve through the plurality of flow passages.

The present disclosure is also directed to a surgical access device which includes, among other things, a valve housing, an elongated cannula sleeve operatively associated with the housing, a generally spherical valve member disposed within an interior chamber defined in the housing and a mechanism operatively associated with the valve housing and the valve member for moving the valve * * member between the open position and the closed position.

* The valve housing defines an intenor chamber and a valve seat for * * S *SS.

* accommodating the valve member. Axially aligned inlet and outlet ports are formed S..

in the housing and extend from the valve exterior to the interior chamber. * S. * S *SS.

S

SSS

S -5..

The elongated cannula sleeve that is operatively assoiated with the valve housing, has an elongated passageway extending therethrough that defines a longitudinal axis aligned with the inlet and outlet ports of the valve housing. In a disclosed embodiment, the cannula sleeve depends from a cannula housing associated with the valve housing. It is envisioned that the canrwia housing can be detachably connected to the valve housing.

The generally spherical valve member is seated within the valve housing and has an axial bore extending therctbrough. The valve member is mounted for movement between an open position and a closed position. In the open. position, the axial bore of the valve member is axially aligned with the elongated passageway of the cannula sleeve and the inlet and outlet ports of the valve housing. In the ci osed position, the axial bore of the valve member extends perpendicular to the elongated passageway of the cAnmllR sleeve and the inlet and outlet ports of the valve housing.

It is envisioned that the valve member is mounted for axial rotation within the valve interior chamber about an axis extending perpendicular to the axially aligned inlet and outlet ports of the valve housing.

It is presently envisioned that the valve member inchides a convex sealing surface, which is aligned with the inlet port of the valve housing when the valve member is in the closed position. In altenialive embodiments that require a pressure :. tight seal, the sealing surface of the valve member includes an annular recess having * *..

s. an o-ring disposed therein.

In a preferred embodiment, the n'Jnirn for moving the valve member * S. * * * includes cam surfaces formed on the exterior surface of the valve member and a cam S..

pin mounted for movement relative to the cam surfaces of the valve member.

::::. Preferably, the cam pin extends radially inwardly from a drive ring supported on the * *** vatve housing and mounted for rotation about the longitudinsi axis of the cannula sleeve. The rotation of the drive ring causes corresponding rotation of the valve methber within the valve seat of the valve housing.

In a disclosed embodiment of the surgical access device, the cam surfaces formed on the exterior surface of the valve member are defined by a pair of cam lobes oriented with respect to the axis of rotation of the valve member at angles to one another.

In an alternative embodiment; the mechanism operatively associated with the valve housing and the valve member for moving the valve member between. the open position and the closed position includes at least one arcuate receas formed on the exterior surface of the valve member and a cam pin formed on the interior sui-face of the housing for engaging with the cam recess.

It is presently preferred that the surgical access device further includes a membrane seal located pmxirnal to the valve seat, the membrane seal having an opening axially aligned with the elongated passageway of the cannula sleeve. The opening is dimensioned to accommodate the passage of a surgical insument therethrougK Those skilled in the art would readily appreciate that the components of the disclosed valve assembly, or portions thereof may be manufactured from any rigid, :. semi-rigid, hard or semi-hard material, such as plastic, robber, metal or a composite. * ***

Still further, in medical applications the valve assembly can be made out of titanium * or a similar bin compatible material.

Additionally, th generally spherical valve member can be formed to have an interference fit with the valve seat so as to provide a tighter seaL By forming the * * * *

I *1*

S

valve meiriber or valve seat slightly out-of-round, a tighter seal is created and more force is required to open the valve.

It is also envisioned that a telescoping nozzle or sleeve can be disposed within the axial bore of the valve member and when the valve is moved to the open position1 the nozzie or slccvc extends out of the valve inlet This feature is useful in a variety of applications, such as for example, beverage or gasoline containers.

Still further, it is envisioned that the valve assembly of the present invention can be connected to stepper motor and thereby be operated remotely.

BRIEF DESCRIPTION OF TILE DPA WINGS

So that those having ordinary skill in the art to which the present application appertains will more readily understand how to make and use the surgical access device and valve assembly of the present invention, embodiments thereof will be described in detail hereinbelow with reference to the drawings, wherein: Fig. I is a perspective view of a valve assembly constructed in accordance with a prefei:red embodiment of the subject invention; Fig. 2 is an exploded perspective view &om above of the valve assembly of Fig. 1 with parts separated for ease of illustration; Fig. 3 is an exploded perspective view om below of the valve assembly of Fig. lwithpartsseparatedforeaseofillustration; Fig. 4 is an exploded perspective view of an alternative embodiment of the * ** valve assembly of the present invention with parts separated for ease of illustration, I.., wherein the valve includes a frangible ring; *S.

Fig. 5 is an exploded perspective view of an alternative embodiment of the * *1 0 valve assembly of the present invention with parts separated for ease of illustration, * wherein the valve includes a sealing disc disposed within the interior chamber of the housing; Fig. 6 is a perspective view of a valve assembly constructed in accordance with an alternative embodiment of the subject invention, wherein the valve assembly is engaged with a beverage container and is adapted for engagement with a cap; Fig. 7 is a perspective view of a valve assembly constructed in accordance with an alternative embodiment of the subject invention with parts separated for ease of illustration, wherein a prize is stored within the bore formed in the valve member; Fig. & is a perspective view of a valve assembly constructed in accordance with a further alternative embodiment of the subject invention, wherein the valve assembly is mounted on the end of a tubing which is in fluid communication with a container Fig. 9 is a perspective view of a valve assembly constructed in accordance with a further alternative embodiment of the subject invention, wherein the valve assembly is mounted on a container and a straw assembly is position within the open valve; Fig. 10 is a perspective view of the valve assembly of the present disclosure which illustrates the valve positioned between two containçrs; Fig. 11 is a perspective view of the valve assembly of the present disclosure adapted for use with a colostomy bag; Fig. 12 is a perspective view of the valve assembly of Fig. 11 with parts separated for ease ofillusiration, : Fig. 13 is an exploded perspective view of an alternative embodiment of the presently disclosed valve assembly with parts separated for case of illustration,

S * .* * * S S... *..

S

wherein the valve member inclutles a plurality of flow passages extending through the valve perpendicular to the centia1 bore; Fig. 14 is a perspective view of an alternative application for the valve assembly of the present invention, wherein the valve is used an a automobile fuel tanlç Fig. 15 is a perspective view of a surgical access device conafructed in accordance with a preferred embodiment of the subject invention; Fig. 16 is an exploded perspective view of the surgical access device of Fig. with parts separated for ems of illustiation, Fig. 17a is a perspective view in partial cross-section of the valve housing, which forms part of the surgical access device of Fig. 15, wherein the valve member is o in an open position with the axial bore of the valve member aligned with the axially aligned inlet and outlet ports of the valve; Fig. 1 7b is a perspective view in partial cross -section of the valve housing of the subject invention, wherein the valve member is in transition from the open position ofFig. 17a to the closed position of Fig. 17c; Fig. 17c is a perspective view in partial cross-section of the valve housing of the subject invention, wherein the valve member is disposed in a closed position so That the axial bore of the valve member is onented perpendicalar to the axially aligned inlet and outlet ports of the valve housing; Fig. 18 is a perspective view of an.other embodiment of the surgical access *. device of the subject invention, which includes a detachable valve housing; and Fig 19 is a perspective view of the surgical access device ofFig. 18, with the valve housing separated from the caimila housing for ease of illustration. * .* * * S *5*S

S S..

S * .. * . .

. . -10-These arid other features of the valve assembly and surgical access device of the present application will become more readily apparent to those having ordinary skill in the art form the following detailed description of the preferred embOdiments.

DETAILED DESCRIPTION OF PREFER1ED EMBODIMENTS

Referring now to the drawings wherein like reference numerals identify similar structural elements or features of the subject invention, there is illustrated in lig. 1 a valve assembly in accoidance with the present invention and designated generally by reference number 100. Valve assembly 100 is adapted for use in a variety of applications, such as for example, medical, consumer beverage, phannaceutical containers, automobile, household appliance and marine. Valve 100 includes, inter alia, a valve housing 10 having an upper body portion 20 and a lower body portion 30 and a generally spherical valve member 50. .The upper and lower body portions 20130 of the housing 10 define an internal chamber 16 for accommodating the valve member 50 and a central axis "X" for the vale. The housing 10 also has axially aligned inlet and outlet ports, 12 and 14 respectively, formed in the upper and lower body portions, 20 and 30 respectively.

The generally spherical valve member 50 is seated within the internal chamber 16 of the valve housing and has an axial bore 52 extending therethmugh. The valve member 50 is mounted for movement within the internal chamber 16 of the housing :*. 10 between an open position and a closed position. Fig. 3a illustrates valve assembly * 100 in the open position; wherein the axial bore 52 of the valve member 50 is axially **** * aligned with the inletport 12 and outlet port 14 of the valve housing 10. In alike : : nannPr, Fig. 3c illustrates the valve assembly 100 in the closed position; wherein the S..

axial bore 52 of the valve member 50 is out of alignment with the inlet and outlet * .e * S S *5** *** * ports 12/16 of the valve housing 10. Fig. 3b, provides a detail of the valve assem bly in an intermediate position. It should be noted that in Figs. 3a through 3c, valve assembly 100 is shown mounted on the neck of a container 62.

With continuing reference to Figs. 3a through 3c, valve member 100 moves between the open position and the closed position when the upper body portion 20 of the housing is rotated about the central axis X" between about 57 degrees and about 77 degrees with respect to the lower body portion 30. The valve member 100 s mounted for axial rotation within the interior chamber about an axis "Y" (see Fig. 3b) extending perpendicular to the central axis "X" defined by the upper and lower body portions 20/30 of the valve housing 10.

The valve member 50 includes a sealing surface 54 which is adapted for sealing engagement with annular valve seat 18 formed in the housing 10 when the valve is in the closed position. In applications where a pressure is applied to the fluid or air that is metered by the valve assembly, the sealing suxfhce 54 of the valve member 50 includes an annular recess 56 (pee Fig. 2) having an o -iing (not shown) disposed therein.

Diametrically opposed pivot pins 58 (only one pin is shown in Fig. 2) extend radially outwardly from the surface of valve member 50 for accommodation within diametrically opposed recesses 32a and 32 formed in the lower body portion 30 of the housing 10 to facilitate the axial rotation of valve member 50.

A camming mechanism is operatively associated with the valve housing 10 * and the valve member 50 for moving the valve member 50 between the open position of Fig. 3a and the closed position of Fig. 3c. The camming mechanism includes cam S...

lobes 60a, 60b formed on the exterior surface of the valve member 50 and a cam pin *..

22 which extends radially inwardly from the interior surface of the upper body portion * .* SI * S..

* -12-of the housing 10 to cooperate with the cam lobes. As will be described in detail herein below, the valve assembly can be equipped with a drive ring which is engaged over the upper body portion of the housing. In such an embodiment, the cam pin can be associated with the drive ring such that the drive ring actuates the valve member.

Referring again to Fig. 3b, the cam lobes 6.Oa, 60b are oriented with respect to the axis of rotation "Y" of the valve member 50 at angles to one another. Each cam lobe 60a, 6Gb has a leading edge 61a, 61b that interacts with the cam pin 32. This interaction facilitates movement of the valve member 50 when the upper body portion is rotated about the longitudinal axis X of the valve assembly 100. When the valve member 50 is moved beiween the open and closed positions, it is rotated about the pivot axis "Y" which extends through the pivot pin 58 of valve member 50, as illustrated in Fig. 3b.

Those skilled us the art would readily appreciate that in lieu of the cam lobes 60a and 60b, a single arcuate recess or pair of recesses can be farmed in the exterior surface of valve member 50. In this embodiment, the length of cain pin 22 would be selected so that it extends into the canming recess(es) and actuates the valve member between the open and closed positions upon the relative axial rotation of the two body portions 20/30 of the housing 10 with respect to each other.

Referring again to Figs. 2 and 3, the lower body portion 30 of valve assembly his a female thread series 34 formed thereon for engaging with corresponding male series associated with a receptacle (e.g. bottle, container, etc.), tubing or the like.

Ribbed surface 36 is provided on the exterior of the lower body portion 30 of the housing 10 to facilitate the rotational engagement of the threads. * ** * . I *.

A water pressure test was conducted on a valve assembly sinniar to that ** described above. The entire valve was manufactured from a rigid therernoplastic and * .* * I S *.

I

S

did not include 0-ring seals. The cmming lobes were constructed such that 67 degrees of rotation was required to move the valve between the open and the closed position. The axial bore of the valve was approximately %" in diameter. Six feet of water was applied to the valve through a 3/8" tube that was secured to the valve outlet. No leaking of the valve was observed and therefore, it was concluded that this embodiment of the valve assembly was capable of sealing fluid at a pressure of 3 psi (minimum).

Referring now to Fig. 4, there is illustrated an alternative embodiment of the valve assembly of the present invention designated generally by reference numeral 200. Valve 200 is similar in structure and operation to valve assembly 100.

However, unlike valve assembly 100, valve assembly 200 includes a frangible ring 270 which is adapted to be engagcd with the housing (i.e., the upper and lower body portions 220,230) of the valve assembly 200. The frangible ring 270 has been added to valve assembly 200 to provide a visual indicatioi of whether the valve has been previously opened. Frangible ring 270 is molded around the upper and lower body portions 220,230 of the housing so that when the body portions are rotated relative to each of the, the ring 270 is broken. Such a tamper -proof feature would be useful in applications where the valve is with consumer beverages, for enainpie.

Referring ncw to Fig 5 which illustrates a further embodiment of the valve assembly of the present invention thathas been designated by reference number 300.

: * Valve 300 is similar in structure and operation to valve assembly 100. However, * *** .* unlike valve 100, valve 300 includes a frangible sealing disc 370 which is positioned within, the interior chamber 316 defined in part by the lower body portion of the * housing. Frangible sealing disc 370 can function as a tamper -proof feature, as well S. as, provide an additional seal for valve nasembly 300. In this embodiment the valve * S. * . S S...

. -14-member 350 has a shape protuberance 364 formed on its exterior surface. When the valve member 350 is rotated from the open to the closed position the protuberance 364 punctures the sealing disc 370 allowing fliid or air to flow through the valve member 350 when it is returned to the closed position.

Refernng now to Figs. 6 and 7, which ilhistr ate yet another embodiment of the valve assembly of the present invention designated generally by reference numeral 400. Valve assembly 400 is similar in structure and operation to valve assembly 100.

As shown in these figures, valve assembly 400 is thre adably engaged with the neck 462 of container 465. A cap 488 is provided which engages with the upper portion 420 of the valve assembly 400. Like the previously disclosed valve assemblies, valve inezaber 450 has a axial bore 452 formed therein which allows fluid or air to flow through the valve assembly 400 when the valve member 450 is in the open position.

Still farther, the axial bore 452 is adapted for receiving and storing an article of manufacture 453 or fluid, such as for example, a prize, a ticket, a vitamin supplement, or a medication. In such embodiments, it would be advantageous to insert a sealing disc into the valve assembly similar that disclosed with reference to Fig. 5 to prevent to article of manufacture from falling into the container during storage. Alternatively, a removable seal can be placed over the mouth of container 462.

Referring now to Figs. 8 and 9 which illustrate an alternate application for valve 400. In Fig. 8, valve 400 is mounted on the end of a tubing assembly 472.

: Tubing assembLy 472 includes two end connectors 474a, 474b and an elongated tube * 476. End connector 474a is threadably engaged with the neck of container 465 and includes a central aperture which is adapted to allow tube 476 to telescope in and out * .: of container 465. Valve assembly 400 is engaged with end connector 474b such that ***

S * ** * S S...

S *5*

* -15-when the valve is in the open position, fluid can flow from the container 465 through the tubing assembly 472 and out of the valve 400.

Fig. 9 illustrates valve assembly 400 mounted on the neck 462 of container 465. Valve assembly 400 is shown in the open position having saw assembly 572 inserted into the axial bore 552. Sfraw assembly 572 includesa sfraw 576 and a plug member 574. The plug member 574 has a ciivumferential 0-ring 575 and is adapted for sealing engagement with the inlet port of'a1ve 400.

Rtferring now to Fig. 10, which fflustrates a hsrther embodiment of the valve assembly of the presont invention, designated generally by reference numeral 500. As shown herein, valve assembly 500 is being used to meter the flow between two containers 565a, 565b. The flow path between the containers includes upper and lower conduit assemblies 572a, 572b and valve assembly 500. The conduit assemblies are sealingly engaged between containers 565a, 565b and the valve assembly 500.

Valve assembly 500 is similar in structure and function to valve assembly 100.

However, unlike valve assembly 100, valve assembly 500 includes actuator arms 528a through 528d that thci]itate the relative rotation of the upper body portion 520 of th valve assembly 500 with respect to the lower body portion 530 thereby moving the valve member between the open and closed positions. 0-rings 525 are provided In seal the connections of the components and prevent leakage from the flow path.

* Referring now to Figs. 11 and 12, wherein valve assenibly 600 is shown used * I..

in conjunction with a colostomy bag assembly 665. Colostom.y bag assembly 665,. ***

* inlniesabag667,aproximalring669andadistalting67l. Thcproximalring669 has anouterfiange that is sealinglyengagedwith the bag 667. Two retainingpins ** 675a, 675b are formed on the inside diameter of the proximal ring 669. These pins * ** a. * a... * a..

* -16- 675 a, 675b are inserted into corresponding engagement recesses 629; 629b fo rnied in vaive assembly 600 and secure the valve assembly 600 to the proximal nng 669.

Similarly, distal ring 671, which is secured to the surce of the patients body, includes retaining pins 673; 673b that are inserted into conponding engagement recesses 63 la (not show), 63 lb formed in valve assembly 600. Valve assembly 600 has been equipped with an actuator arm 628 which allows the patient to move the valve between the open and the closed position as desired.

Referring now to Fig. 13, there is illustrated ahowerhead which includes a valve assembly conscted in accordance with an alternative embodiment of the presear invention and designated by reference numeral 700. Again, valve assembly 700 is similar in structure and operation to the previously disclosed valves, but unlike the prior valves, valve assembly 700 has a plurality of flow passages 753 formed in the valve member 750.

The flow passages 753 extend along an axis that is perpendicular to the axial bore 752 such that when the valve member is in the closed position, fluid traverses the valve through the plurality of flow passages 753. Hence when the valve assembly 700 is in the open position, a single jet of water is emitted from the showerhead assembly arid when it is in the closed position, water streams from the flow passages 753. 0-ring seals 755; 755b and 757; 75Th arc provided at both ends of the axial bore 752 and tlow passages 753 to properly seal the valve when in the open and closed positions, respectively.

: "S The showerhead disclosed in Fig. 13 is also equipped with a control ring 790 *5S.

S that sealingly engages wth the upper portion 720 of the valve assembly 700 using 0-ringseal792. Controlring79obasadzivepin722formedonitsinteriorsurface.

Drive pin 722 projects through the slot 721 formed in the upper portion 720 of the * .* * . * * -17-S..

S

valve assembly 700 and engages with the cam lobes 760a, 760b formed the valve member 750. Thus, rotation of the control ring790 with respect to the lower body portion 730 of the valve assembly 700 moves the valve member between the open and the closed positions.

Those skilled in the art will readily appreciate that the showerlicad assembly described hereinabove can be adapted for use fox metering an air supply rather than fluid.

Referring now to Fig. 14 which iiiustrates a valve assembly (designated by reference numeral 800) constructed in accordance with the presdat invention positioned within the inlet 862 of fuel tank. The use of valve assembly 800 in this application allows for the elimination of a removable gas cap and oniy requires an approximately 67 degrees rotation of drive ring 890 to open the valve. The axial bore 852 of the valve member would be adapted for receiving a standard fuel pump nozzle 855.

Refening now to Figs. 15 and 16, there is illustrated a surgical instrument constructed in accordance with a prefcnl embodiment of the subject invention and designated generally by reference numeral 900.

MiiimIly invasive surgical procedures are commonly performed by passing surgical instniments through a narrow tube or eannula inserted thrrnigh a small entrance incision fanned in a pa1ieots body using a tincar or obturator. For example, laparoscopic surgical procedures are performed within the abdominal cavity through sthall incisions formed in the abdominal wall. During a laparoscopic procedure, * * * .e.

insufflating gases are introduced into the abdominal cavity to raise the abdominal wall : : :* or per toneurn away from the vital organs within the abdominal cavity, thereby providing an adequate region in which to operate. * .* 1 S S...

S S..

During a laparoscopic procedure, it is necessary to maintain the atmospheric integrity of the abdominal cavity, and thus prohibit the egress of insuftiation gases for the surgical site. It is common therefore, to provide a seal assembly with mthe canimla so that when instruments are present within the cannula and when instruments are withdrawn form the cannuia, the tubular passageway extending therethrough is tightly sealed to prevent the egress of insuffiatiug gases. For example, it is known to employ an elastomeric seal member with an aperture or slit that may be forced open when thc instrument is passed therethrough. The seal ineniber prevents the egress of insufllation gasses when the instrument is present and absent from the canmila, Th crc are known disadvantages to employing such seals. In particular, the opening or slit can tear when an instmment is forced therethrougb, thus rendering the seal in effective to prevent the egress of insufilating gases from the cannula sleeve.

Therefore as will be described hereinbelow, surgical instrument 900 has been equipped with the valve assembly of the present invention to prevent the egress of insufilaling gases through the canimla in the absence of a surgical instniment.

Surgical instrument 900 is intended for use as an access device, and more particularly, as a device to facilitate the inlrodu.ction of a surgical instrument into a person's body during a minim11y invasive surgical procedure. Surgical instrwnents introduced into a patients body through the surgical instrument 900 of the subject invention can include, for example, clip appliers, graspers, dissectors, retractors, staplers, laser fibers, photographic devices, endo scopes, laparoscopes, tubes; and the 111cc.

: *** SUSgiCaI instrument or access device 900 includes a proximal valve housing S...

910 having en inlet port 912 for receiving surgical instruments. Valve housmg 910 : . . includes an upper body portion 920 and a lower body portion 930 which define, * among other things, a generally hemispherical internal chamber 916 for * S. * S * ** * -19-

SS

S

accommodating a generally spherical valve member 950. Internal chamber 916 communicates with an outlet port 914 of the valve housing 910 which is axially aligned with the inlet port 912. Valve housing 910 is operatively associated with a lower çannula housing 980. Preferably, the valve housing 910 and caimula housing 980 are formed of a polycarbonate material.

An elongated caxmula sleeve 982 extends distally from the cwmula housing 980. Cannula sleeve 982 has an elongated passageway 984 extending therethmugb.

which defines a longitudinal axis defined by reference characler "X". Passageway 984 is axially aligned with the inlet port 912 and outlet port 914 of valve housing 910.

Cannula sleeve 982 may be formed of stainless steel or another suitable rigid material sunh as polycarbonate materials or the like. An inlet conduit 986 is incorporated into carmula housing 980 to pen.nit the passage of insuation gases through the cannula sleeve 982 and into the patient's body cavity. The inlet conduit 986 can include a stopcock valve, which is not shown.

Valve member 950, which is preferably formed from a polycarbonate material, is mounted for axial rotation within the interior chamber 916 about an axis extending perpendicular to the longitudinal axis of the cannula sleeve 982. Diametrically opposed pivot pins 958 (only one pin is shown in Fig. 16) extesd radially outwardly from the surface of valve member 950 for accommodation, within diametrically opposed recesses 932a, 932b to facilitate the axial rotation of valve member 950. An axial bore 952 extends through the valve member 950, and a convex sealing surface * * * .** 954 is provided on valve member 950, spaced from axial bore 952. S...

Valve member 950 is mounted for movement between an open position and a *.: .* closed position. In the open position of valve membe 950, which is ahown in Fig. 1 7a. the axial bore 952 is axially aligned with the elongated passageway 984 of * IS * S * S...

S *5S

S

cannula sleeve 982 and the inlet and outlet ports 912, 914 of valve housing 910. In the closed position of valve member 950, which is shown in Fig. 17; the axial bore 952 extends perpendicular to the elongated passageway 984 of cannula sleeve 982 and the scaling surface 954 is axially aligned with tim inlet port 912 of valve housing 910.

As described with respect to previous embodiments, a carnming mechanism is operatively associated with the valve housing 910 and the valve member 950 for moving the valve member 950 between the open position of Fig. 17a and the closed position of Fig. 17c. The cTn1r'g mechanism includes arcuate cam lobes 960a, 960b formed on the exterior surface of the valve member 950 and a cam pin 922 which extends radially inwardly from the interior surface of the upper housing portion/drive ring 920 to cooperate with the cam lobes. As before, a leading edge of the cam lobes 960a, 960b interacts with the cam pin 922. This interaction facilitates movement of the valve member 950 when the drive ring 920 is rotated about the longitudinal axis "X' of canmila sleeve 982. When the valve member 950 is moved between the open and closed positions, it is rotated about the pivot axis UU which extends through the pivot pin 958 of valve member 950, as illustrated in Fig. 3b.

Drive ring 920 is rotatably mounted on the proximal end of valve housing 910 and includes diametrically opposed radially inwardly extending guide ribs 924 which cooperate with an annular guide surface 938 formed on the exterior of the lower body portion 930 of the vlve housing 910. Stop surfaces 940 limit the rotational motion of upper body portion/drive ring 920 relath'e to the longitudinal axis of the cannula sleeve 982; * . *** A fluted manipulation knob 990 is cooperatively engaged with the drive ring 920. Manipulation knob 990 includes inlet port 992, which is aligned with the axial passageway 984 of cannula sleeve 982 and defines in part th inlet port 912 of valve * .. * S S **

*.S --housing 910. The engagement of drive ring 920 and manipulation knob 990 is accomplished through the coupling of a pair of diametrically opposed radially outwardly extending engagement tabs 926 on drive ring 920 (only one tab is shown in Fig: 16) with a pair of coiresponding diametrically oppesed interior recess 994a, 994b formed in the intedor cavity of manipulation knob 990. Aiternalive structural means may be provided to enable ready manipulation of drive ring 920.

A flange 942 projects radially outwardly from the lower portion 930 of valve housing 910 to provide leverage to the surgeon when the manipulation knob 990 is rotated. Valve housing 910 further includes a membrane seal 996 located proximal to the interior chamber 916 and retained within an annular recess. Membrane seal 996 has a central slitted opening 998 that is axially aligned with the outlet port 912 of valve housing 910 and the paamgeway 984 of the cannula sleeve 982. Central opening 998 is dimensioned and configured to accommodate the passage of a surgical instrument therethrough. The membrane seal 996 will help to prevent the egress of insufflation gasses from the access device 900 when an instrument is present therein and the valve member 950 is in an open position.

Referring now to Figs. 18 and 19, there is a perspective view of another embodiment of the surgical access device of the subject invention, which is designated by reference numeral 1000 and includes a detachable valve housing 1010.

More particularly, as best seen in Fig. 5. the valve housing 1010 is detachably coniiected to the cannula housing 1080. This will enable a surgeon to utilize the 1:::: cannula housing 1080 dunng the performance of procedures in which the valve housing is not required. It will also enable the surgeon. to readily remove specimens * : * from the surgical site. As illustiazed, the detachable relationship of valve housing 1010 and cn'rnl4 housing 1080 is thcilitated by a threaded connection thcrebetween. * .* * * * S...

* -22-*.

S

Alteinat,.ve coupling arrangements are envisioned and well within the scope of the

ubj act disclosure.

Aithough the valve assembly of the subject invention and surgical access device incorporating the same have been described with respect to preferred etnbodinients, those skilled in the art will readily appreciate that changes and modifications may be made thereto without departing from the spirit and scope of the subject invention as defined by the appended claims.

Additionally, the valve assembly of the subject invention can be used in alternative applications not described hereinabove. For example, the valve can be installed in a sink drain to c]in,innte the need for a plug. Aditiona]ly, the valve can replace lungs or plugs used to seal penetrations in the hull of boats. Still further, the valve can replace caps on hand creams, toothpaste, etc. S. * * * *** * I I... * S. *. S *5** *

S * S. * * * S...

I

S

Claims

WHAT IS CLAIMED IS: 1. A valve assembly comprising: a) a valve housing

having an upper body portion and a lower body portion, the upper and lower body portions defining an inteirial chamber for accommodating a valve member and a central axis for the valve, the housing having axially aligned inlet and outlet ports fonnud in the upper and lower body portions, respectively; b) a generally spherical valve member seated within the internal chamber of the valve housing and having an axial bore extending therethrough, the valve member mounted for movement between an open position wherein the axial bore of the valve member is axially aligned with the inlet and outlet ports of the valve housing, and a closed position wherein the axial bore of the valve member is out of alignment with the inlet and outlet ports of the valve housing; and c) menns operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position when the upper body portion of the housing is rotated about the central axis with respect to the lower body portion.

2. A valve assembly as recited in Claim 1, wherein the means operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position includes a* cs1nmMC * . * *.* **** mechanism. * . * .* * S * S... * *5 * * S *.*

S

3. A valve assembly as recited in Claim 2, wherein the cainrning mechmi.in includes cam surfaces formed on the exterior surface of the valve member and a cam pm formed on the interior surface of the upper body poition of the housing.

4. A valve assembly as recited in Claim 3, wherein the cam surfaces formed on the exterior surface of the valve member are defined by a pair of arcuate cam lobes formcd at angles to one another.

S. A valve assembly as recited in Claim 2, wherein the cmnming mechnirn includes at least one arcuate recess formed on the exterior surface of the valve member and a cam pin formed on the interior surface of the upper body portion of the housing for engaging with the cam recess.

*6. A valve assembly as recited in Claim 1;wherein the valve member is mounted for axial rotation within the interior chamber about an axis extending perpendicular to the central axis defined by the upper and lower body portion of the valve housing.

7. A valve assembly as recited in Claim 1, wherein the housing includ means associated with the inlet port for engaging the valve with a receptacle or tubing. * *** * S * S..

8. A valve assembly as recited in Claim 1, whercin the housing includes * *5 *:.. means associated with the outlet port for ecgaging the valve with a receptacle or wbing. * S. ** S *5SS

:. -25- 9. A valve assembly as recited in Claim 1, wherein the valve member includes a sealing surface adapted for sealing engagement with a valve seat fonned in the housing when the valve is in the closed position.

10. A valve assembly as recited in Claim 9, wherein the sealing surface of the valve member includes an annular recess having an o S-ring disposed therein.

11. A valve assembly as recited in Claim 9, wherein the valve member has an outer radius which is larger than an inner radius of the valve seat so as to create an interference fit therewith when the valve assembly is in the closed position.

12. A valve assembly as recited in Claim I, further comprising a frangible ring engaged with exterior of the valve housing to provide a visual indication of whether the valve has been opened.

13. A valve assembly as recited in Claim I, further comprising a frangible sealing disc inserted into the interior chamber of the valve to provide a visual indication of whether the valve has been opened and wherein the valve member includes means for puncturing the disc when the valve is opened. S. * I

14. A valve assembly as recited in Claim 1, wherein the axial bore of the * III valve member is adapted and configured for receiving and storing an article of * II * .: . manu.cture when the valve is in the closed position.

S

I * IS *I I I...

* -26-I..

I

15. A valve assembly as recited in Claim 1, further comprising means associated with the valve housing for thcilitating the axial rotation of the lower body portion of the housing relative to the upper body portion.

16. A valve assembly as recited in Claim 1, wherein a plurality of flow passages are fonned in the valve member extending theretbrough along an axis which is perpendicular to the axial bore such that when the valve is in the closed position, fluid or air traveies the valve through the plurality of flow passages.

17. A valve assembly as recited in Claim I, wherein the valve member moves between the open position and the closed position when the upper body portion of the housing is rotated about the central axis between about 57 degrees and about 77 degrees with respect to the lower body portion.

18. A valve assembly as recited in Claim 1, further comprising a telescoping nozzle or sleeve diàposed within the axial bore of the valve member. I. * * * S.. *5*S * S * *5* * S. * S ***. *.*

S * S. * . *

* -27-*** 19. A surgical access device comprising: a) a valve housing defining a valve seat for accommodating a valve member, and having axially aligned inlet and outlet ports; b) an elongated cannula sleeve operatively associated with the valve housing and having an elongated passageway extending therethrough which defines a longitwfinal axis aligned with the inlet and outlet ports of the valve housing; c) a generally spherical valve member seated within the valve housing and having an axial bore extending therethmugh, the valve member znountuf for movement between an open position wherein the axial bore of the valve member is axially aligned with the elongated passageway of the cannuia sleeve and the inlet and outlet ports of the valve housing, and a closed position wherein the axial bore of the valve member extends perpendicular to the elongated passageway of the cannula sleeve and the inlet and outlet ports of the valve housing; and d) means operatively associated with the valve housing and the valve member for moving the valve member between the open poston and the closed position.

20. A surgical access device as recited in Claim 19, wherein the valve member is mounted for axial rotation within the valve seat about an axis extending perpendicular to the axially aligned inlet and outlet ports of the valve houning. * * * ***

21. A surgical access device as recited in Claim 19, wherein the means for * * I...

moving the valve member includes cam surfaces formed on the exterior surface of the * ** * .: * valve member anda cam pin mounted for movement relative to the cam surfaces of * the valve member. * ** * 0 0 S... * *.

22. A surgical access device as recited in Claim 21, wherem the cam pin extends radially inwardly from a drive ring supported on the valve housing and mounted for rotation about the longitudinal axis of the cannula sleeve, and wherein mtalion of the drive ring causes corresponding rotation of the valve member within the valve seat of the valve housing.

23. A surgical access device as recited in Claim 22, wherein the cam surfaces formed on the exterior surface of the valve member are de5ned by a pair of cam lobes oriented with respect to the axis of rotation of the valve member at angles to one another.

24. A surgical access device as recited in Claim 19, wherein the access device further includes a membrane seal located proximal In the valve seat, the membrane seal having an opening axially aligned with the elongated passageway of the cannula sleeve dimensioned to accommodate the passage of a surgical instrument therethmugh.

25. A surgical access device as recited in Claim 19, wherein the cannula sleeve depends from a cannula housing associated with the valve housing. * *.*

26. A surgical access device as recited in Claim 25, wherein the canmula * . **S.

housing is detachably connected to the valve housing. * *S * * . *.** * *.U

S * ** S. S S...

S *SS

27. A surgical access device as recited in Claim 19, wherein the valve member includes a convex sealing surface, which is aligned with the inlet port of the valve housing when the valve member is in the closed pcsilion.

28. A surgical access device as recited in Claim 19, wherein the means operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position includes at least one arnuatc recess formed on the exterior surface of the valve member and a cam pin formed on the interior surface of the housing for engaging with the cam recess.

29. A surgical access device as recited in Claim 19, wherein the valve member includes a sealing surface adapted for sealing engagen:ienl with the valve seat formed in the housing when the valve is in the closed position.

30. A surgical access device as recited in Claim 29, wherein the sealing surface of the valve member includes an annular recess having an o -ring disposed therein.

31. A valve assembly comprising: a) a valve housing defining a valve seat for accommodating a * valve member, and having axially aligned inlet and outlet ports; :.::: b) a generally spherical valve member seated within the valve S S.s housing and having an axial bore extending therethrough1 the valve member mounted * S. * .: ,* for movement between an open position wheTein the axial bore of the valve member * r is axially aligned with the inlet and outlet ports of the valve housing, and a closed * S. S. S S...

* -30-e.

S

position wherein the axial bore of the valve member is out of alignment with the inlet and outlet ports of the valve housmg and c) cmnhig means operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position.

32. A valve assembly s recited in Claim 31, wherein the valve member is mounted for axial rotation within the valve seat about an axis extending perpendicular to the axially aligned inlet and outlet ports of the valve housing.

33. A valve assembly as recited in Claim 32, wherein the cn1ming means for moving the valve member includes cam surfaces formed on the exterior surface of the valve member and a cam pin mounted for movement relative to the cam surfaces of the valve member.

34. A valve assembly as recited in Claim 33, wherein the cam pin extends radially inwardly from a drive ring supported on the valve housing and mounted for axial rotation relative to the axially aligned inlet and outlet ports, and wherein rotation of the drive ring causes corresponding rotation of the valve member within the valve -seat of the valve housing. * I * III

35. A valve assembly as recited in Claim 33, wherein the cam surfaces * * I.e.

formed on the exterior surface of the valve member arc defined by a pair of cain lobes * II * .:.. oriented with respect to the axis of rotation of the valve member at angles to one * S..

* another. * *S * * S e** S..

S

36. A valve assembly as recited in Claim 31, wherem the means operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position includes a camming mechanism.

37. A valve assembly as recited in Claim 31, wherein the camming means includes it least one arcaate recess farmed on the extesior surface of the valve member and a cam pin formed on the interior surface of the housing for engaging with the cam recess.

38. A valve assembly as recited in Claim 31, wharnin the hou sing includes means associated with the inlet port for engaging the valve with a receptacle or tubing.

39. A valve assembly as recited in Claun 31, wherein the housing includes means associated with the outlet port for engaging the valve with a receptacle or tubing.

40. A valve assembly as recited in C ann. 31, wherein the valve member includes a sealing surface adapted for sealing engagement with a valve seat formed in.

the housing when the valve is in the closed position. * I I.e. * .*

*.. 41. A valve assembly as recited in Claim 37, wherein the sealing surface of the valve member includes an. annular recess having an a-ring disposed therein. * .* *I I *ISI

*:. -32- 42. A valve assembly as recited in Claim 31, further comprising a frangible ring engaged with exterior of the valve housing to provide a visual indication of whether the valve has been opened.

43 A valve assembly as recited in Claim 31, further comprising a frangible sealing disc inserted into the interior chamber of the valve to provide a visual indication of whether the valve has been opened and wherein the valve member includes means for puncturing the disc when the valve is opened.

44. A valve assembly as recited in Claim 31, wherein the axial bore of the valve member is adapted and configured for receiving and storing an article of manufacture when the valve is in the closed position.

45. A valve assembly as recited in Claim 31, further comprising means associated with the valve housing for facilitating the axial rotation of the lower body portion of thehousing relative to the upper body portion.

46. A valve assembly as recited in Claim 31, wherein a plurality of flow passages are formed in the valve member extending thcrethrough along an axis which *: :: is perpendicular to the axial bore such that when the valve is in the closed position, : fluid or air traverses the valve through the plurality of flow passages. S. S..

47. A valve assembly as recited in Claim 31, wherein the valve member * ..

:.. * moves between the open position and the closed position when an upper body portion *

S

of the housing is rotated about the central axis between about 57 degrees and about 77 degrees with respect th a lower body portion of the housing.

48. Avalve assembly as recited in Claim 31, wherein the valve member has an outer radius which is larger than an inner radius of the valve seat so as to create anmterference fit therewith when the valve assembly is in the closed position.

49. A valve assembly as recited in Claim 31, further comprising a telescoping nozzle or sleeve disposed within the axial bore of the valve member. * * * **. **S. * . S... * *5 * S S

S * S. * S * **S.

S S..

S

Amendments to the Claims have been filed as follows WHAT IS CLAIMED IS: I. A valve assembly comprising: a) a valve housing comprising an upper body portion and a lower body portion, the upper and lower body portions defining an internal chamber for accommodating a valve member and a central axis for the valve, the housing including inlet and outlet ports formed in the upper and lower body portions, respectively; b) a valve member seated within the internal chamber of the valve housing and defining a passage extending therethrough, the valve member mounted for movement between an open position wherein the passage of the valve member is aligned with the inlet and outlet ports of the valve housing, and a closed position wherein the passage of the valve member is out of alignment with the inlet and outlet ports of the valve housing; and c) means operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position when the upper body portion of the housing is rotated about the central axis with respect to the lower body portion.

2. A valve assembly as recited in Claim I, wherein the means operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position includes a camming mechanism. *S * *

3. A valve assembly as recited in Claim 2, wherein the camming mechanism *** includes cam surfaces formed on the exterior surface of the valve member and a cam pin formed S...

on the interior surface of the upper body portion of the housing. S... * * . *. . *

*.S... * *

4. A valve assembly as recited in Claim 3, wherein the cam surfaces formed on the exterior surface of the valve member are defined by a pair of arcuate cam lobes formed at angles to one another.

5. A valve assembly as recited in Claim 2, wherein the camming mechanism includes at least one arcuate recess formed on the exterior surface of the valve member and a cam pin formed on the interior surface of the upper body portion of the housing for engaging with the cam recess.

6. A valve assembly as recited in Claim 1, wherein the valve member is mounted for axial rotation within the interior chamber about an axis extending perpendicular to the central axis defined by the upper and lower body portion of the valve housing.

7. A valve assembly as recited in Claim 1, wherein the housing includes means associated with the inlet port for engaging the valve with a receptacle or tubing.

8. A valve assembly as recited in Claim 1, wherein the housing includes means associated with the outlet port for engaging the valve with a receptacle or tubing.

9. A valve assembly as recited in Claim I, wherein the valve member includes a **I.

sealing surface adapted for sealing engagement with a valve seat formed in the housing when the valve is in the closed position. * * ****

S

S..... * .

10. A valve assembly as recited in Claim 9, wherein the sealing surface of the valve S... * S.

member includes an annular recess having an 0-ring disposed therein.

S 3o

11. A valve assembly as recited in Claim 9, wherein the valve member has an outer radius which is larger than an inner radius of the valve seat so as to create an interference fit therewith when the valve assembly is in the closed position.

12. A valve assembly as recited in Claim 1, further comprising a frangible ring engaged with exterior of the valve housing to provide a visual indication of whether the valve has been opened.

13. A valve assembly as recited in Claim 1, further comprising a frangible sealing disc inserted into the interior chamber of the valve to provide a visual indication of whether the valve has been opened and wherein the valve member includes means for puncturing the disc when the valve is opened.

14. A valve assembly as recited in Claim 1, wherein the passage of the valve member is adapted and configured for receiving and storing an article of manufacture when the valve is in the closed position.

15. A valve assembly as recited in Claim 1, further comprising means associated with the valve housing for facilitating the axial rotation of the lower body portion of the housing relative to the upper body portion. **S. * * **..

** ** 16. A valve assembly as recited in Claim I, wherein a plurality of flow passages are S...

formed in the valve member extending therethrough along an axis which is perpendicular to the *:::: passage such that when the valve is in the closed position, fluid or air traverses the valve through the plurality of flow passages. *SS S

S S

17. A valve assembly as recited in Claim 1, wherein the valve member moves between the open position and the closed position when the upper body portion of the housing is rotated about the central axis between about 57 degrees and about 77 degrees with respect to the lower body portion.

18. A valve assembly as recited in Claim I, further comprising a telescoping nozzle or sleeve disposed within the passage of the valve member.

19. A surgical access device comprising: a) a valve housing defining a valve seat for accommodating a valve member, and including an inlet port and an outlet port; b) an elongated cannula sleeve operatively associated with the valve housing and having an elongated passageway extending therethrough that defines a longitudinal axis aligned with the in let and outlet ports of the valve housing; c) a valve member seated within the valve housing and defining a passage extending therethrough, the valve member mounted for movement between (I) an open position wherein the passage of the valve member is aligned with the elongated passageway of the cannula sleeve and the inlet and outlet ports of the valve housing, and (ii) a closed position wherein the passage of the valve member is not aligned with the elongated passageway of the cannula sleeve and the inlet and outlet ports of the valve housing; and * *** d) means operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position. *

* ***** * * 20. A surgical access device as recited in Claim 19 wherein the valve member is **** * * * mounted for axial rotation within the valve seat about an axis extending perpendicular to the **S**. * *

axially aligned inlet and outlet ports of the valve housing.

21. A surgical access device as recited in Claim 19, wherein the means for moving the valve member includes cam surfaces formed on the exterior surface of the valve member and a cam pin mounted for movement relative to the cam surfaces of the valve member.

22. A surgical access device as recited in Claim 21, wherein the cam pin extends radially inwardly from a drive ring supported on the valve housing and mounted for rotation about the longitudinal axis of the cannula sleeve, and wherein rotation of the drive ring causes corresponding rotation of the valve member within the valve seat of the valve housing.

23. A surgical access device as recited in Claim 22, wherein the cam surfaces formed on the exterior surface of the valve member are defined by a pair of cam lobes oriented with respect to the axis of rotation of the valve member at angles to one another.

24. A surgical access device as recited in Claim 19, wherein the access device further includes a membrane seal located proximal to the valve seat, the membrane seal having an opening axially aligned with the elongated passageway of the cannula sleeve dimensioned to accommodate the passage of a surgical instrument therethrough.

25. A surgical access device as recited in Claim 19, wherein the cannula sleeve *...

depends from a cannula housing associated with the valve housing. * * S...

26. A surgical access device as recited in Claim 25, wherein the cannula housing is *:::: detachably connected to the valve housing.

*I.S..

I

27. A surgical access device as recited in Claim 19, wherein the valve member includes a convex sealing surface, which is aligned with the inlet port of the valve housing when the valve member is in the closed position.

28. A surgical access device as recited in Claim 19, wherein the means operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position includes at least one arcuate recess formed on the exterior surface of the valve member and a cam pin formed on the interior surface of the housing for engaging with the cam recess.

29. A surgical access device as recited in Claim 19, wherein the valve member includes a sealing surface adapted for sealing engagement with the valve seat formed in the housing when the valve is in the closed position.

30. A surgical access device as recited in Claim 29, wherein the sealing surface of the valve member includes an annular recess having an 0-ring disposed therein 31. A valve assembly comprising: a) a valve housing defining a valve seat for accommodating a valve member, and defining an inlet port and an outlet port; b) a valve member seated within the valve housing and defining a passage **** extending therethrough, the valve member mounted for movement between an open position *1*** wherein the passage of the valve member is aligned with the inlet and outlet ports of the valve a...

housing, and a closed position wherein the passage of the valve member is out of alignment with the inlet and outlet ports of the valve housing; and * c) camming means operatively associated with the valve housing and the * * valve member for moving the valve member between the open position and the closed position.

32. A valve assembly as recited in Claim 31, wherein the valve member is mounted for axial rotation within the valve seat about an axis extending perpendicular to the axially aligned inlet and outlet ports of the valve housing.

33. A valve assembly as recited in Claim 32, wherein the camming means for moving the valve member includes cam surfaces formed on the exterior surface of the valve member and a cam pin mounted for movement relative to the cam surfaces of the valve member.

34. A valve assembly as recited in Claim 33, wherein the cam pin extends radially inwardly from a drive ring supported on the valve housing and mounted for axial rotation relative to the axially aligned inlet and outlet ports, and wherein rotation of the drive ring causes corresponding rotation of the valve member within the valve seat of the valve housing.

35. A valve assembly as recited in Claim 33, wherein the cam surfaces formed on the exterior surface of the valve member are defined by a pair of cam lobes oriented with respect to the axis of rotation of the valve member at angles to one another.

36. A valve assembly as recited in Claim 31, wherein the means operatively associated with the valve housing and the valve member for moving the valve member between * *** the open position and the closed position includes a camming mechanism. S... * S *.

37. A valve assembly as recited in Claim 31, wherein the camming means includes at * S least one arcuate recess formed on the exterior surface of the valve member and a cam pin formed * S S

I

on the interior surface of the housing for engaging with the cam recess.

*I*I5I

S

38. A valve assembly as recited in Claim 31, wherein the housing includes means associated with the inlet port for engaging the valve with a receptacle or tubing.

39. A valve assembly as recited in Claim 31, wherein the housing includes means associated with the outlet port for engaging the valve with a receptacle or tubing.

40. A valve assembly as recited in Claim 31, wherein the valve member includes a sealing surface adapted for sealing engagement with a valve seat formed in the housing when the valve is in the closed position.

41. A valve assembly as recited in Claim 37, wherein the sealing surface of the valve member includes an annular recess having an 0-ring disposed therein.

42. A valve assembly as recited in Claim 31, further comprising a frangible ring engaged with exterior of the valve housing to provide a visual indication of whether the valve has been opened.

43. A valve assembly as recited in Claim 31, further comprising a frangible sealing disc inserted into the interior chamber of the valve to provide a visual indication of whether the valve has been opened and wherein the valve member includes means for puncturing the disc when the valve is opened. * I I...

*....: 44. A valve assembly as recited in Claim 31, wherein the passage of the valve * S member is adapted and configured for receiving and storing an article of manufacture when the * S I

S

* valve is in the closed position.

**S.*. * S

45. A valve assembly as recited in Claim 31, further comprising means associated with the valve housing for facilitating the axial rotation of the lower body portion of the housing relative to the upper body portion.

46. A valve assembly as recited in Claim 31, wherein a plurality of flow passages are formed in the valve member extending therethrough along an axis which is perpendicular to the passage such that when the valve is in the closed position, fluid or air traverses the valve through the plurality of flow passages.

47. A valve assembly as recited in Claim 31, wherein the valve member moves between the open position and the closed position when an upper body portion of the housing is rotated about the central axis between about 57 degrees and about 77 degrees with respect to a lower body portion of the housing. 48. A valve assembly as recited in Claim 31, wherein the valve member

has an outer radius which is larger than an inner radius of the valve seat so as to create an interference fit therewith when the valve assembly is in the closed position.

49. A valve assembly as recited in Claim 31, further comprising a telescoping nozzle or sleeve disposed within the passage of the valve member. * *** * * *à.

50. A valve assembly comprising: S...

a) a valve housing comprising an upper body portion and a lower body * . portion, the upper and lower body portions defining an internal chamber for accommodating a * S * S. * valve member and a central axis for the valve, the housing including inlet and outlet ports formed **S*.& S 5 in the upper and lower body portions, respectively; b) a valve member seated within the internal chamber of the valve housing and defining a passage extending therethrough, the valve member mounted for movement between an open position wherein the passage of the valve member is aligned with the inlet and outlet ports of the valve housing, and a closed position wherein the passage of the valve member is out of alignment with the inlet and outlet ports of the valve housing; and c) means operatively associated with the valve housing and the valve member for moving the valve member between the open position and the closed position when the upper body portion of the housing is rotated about the central axis with respect to the lower body portion, wherein: the valve member includes a sealing surface adapted for sealing engagement with a valve seat formed in the housing when the valve is in the closed position, said sealing surface being of an outer radius which is larger than an inner radius of the valve seat so as to create an interference fit therewith when the valve assembly is in the closed position. * *, **S. * * **Is S.. * S ****

S

* S.... * S * S* S. S *5555 S.