US3739956A - Valved stopper - Google Patents
Valved stopper Download PDFInfo
- Publication number
- US3739956A US3739956A US3739956DA US3739956A US 3739956 A US3739956 A US 3739956A US 3739956D A US3739956D A US 3739956DA US 3739956 A US3739956 A US 3739956A
- Authority
- US
- United States
- Prior art keywords
- stopper
- valve
- vent
- container
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B18/0218—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques with open-end cryogenic probe, e.g. for spraying fluid directly on tissue or via a tissue-contacting porous tip
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00743—Type of operation; Specification of treatment sites
- A61B2017/00747—Dermatology
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2931—Diverse fluid containing pressure systems
- Y10T137/3115—Gas pressure storage over or displacement of liquid
- Y10T137/3127—With gas maintenance or application
- Y10T137/313—Gas carried by or evolved from liquid
Definitions
- valved stopper for use with a self- [21 1 Appl N 232l65 pressurizing liquid refrigerant dispenser such as used in dermatologic cryosurgery.
- An operating lever is urged [52] US. Cl. 222/396, 128/303.1, 137/210, normally outwardly by a spring within the stopper and 222/481, 222/505, 222/511, 251/77 is loosely linked to a spring loaded vent valve which is [51] Int. Cl. A6lb 17/36 n rmally open.
- VALVED STOPPER BACKGROUND OF THE INVENTION This invention pertains to that class of surgical devices which is used for spraying a low boiling temperature refrigerant, such as liquid nitrogen, onto the skin.
- Devices of this type which are currently available include a container for the refrigerant and a valved vent passage.
- the vent passage is normally open, permitting the escape of gas from the continuously boiling liquid.
- the surgeon When the surgeon is ready to operate on the affected site, he closes the vent valve. This causes pressure to build rapidly within the container and a spray of liquid refrigerant is ejected from a suitable discharge orifice.
- vent valves of such type are subject to sticking in the closed position. Suppose, for example, that a particle of ice is present on the valve seat. The surgeon could easily force the valve shut by finger pressure, crushing the ice in the process. The ice would then refreeze, causing the vent valve to stick shut with the same potentially disastrous results as previously described.
- a manually reciprocable valve actuating member is also provided which is loosely linked with the second valve member.
- a second spring which is stronger than the first, is operatively connected with the actuating member and tensions the linking means to maintain the valve in a normally open condition.
- FIG. 1 is an isometric view of a liquid refrigerant dispensing device incorporating a stopper in accordance with this invention
- FIG. 2 is an enlarged partial cross-section through the device of FIG. 1, illustrating the valved stopper portion in detail;
- FIG. 3 is a view similar to FIG. 2 showing the stopper in its actuated condition.
- the basic container is double walled and comprises an internal flask It) for the liquid refrigerant which has secured to its top an internally threaded neck member 12 which defines a plurality of radial vents 14.
- An outer plastic shell I6 is spaced from flask 10 and has an open bottom I8. Threaded into the top of shell 16 is a nozzle 20 from which protrudes a spray needle 22 which communicates by means ofa tubing 24 to a discharge outlet in the bottom of the flask 10.
- the stopper of this invention comprises a substantially tubular body 26 having external threads 28 at its lower end for engaging the neck member 112 and a radial flange 30 at its upper end.
- the tubular body 26 is circumferentially grooved to receive a pair of spaced O-rings 32, 34.
- a circular channel 36 intermediate the O-rings 32, 34 communicates with the center of body 26 by means of ports 38.
- a tubular valve member 40 Secured within the body 26 and just below the ports 38 is a tubular valve member 40.
- the top of valve member 40 defines a valve seat and the bottom defines a recess for retaining a spring, as will be hereinafter described.
- annular grip 42 mounted on the top of flange 30' is an annular grip 42 secured thereto by means of screws 44. Retained between the flange and grip is a flexible diaphragm 46.
- a spring retainer 48 is secured to the bottom surface of the diaphragm by means of a screw 50 which also clamps thereto a washer 52.
- An actuating lever 54 is loosely mounted below the head of screw 50 with one end engaging an annular shoulder 56 formed in grip 42.
- An L-shaped stop tab 58 mounted on lever 54 also engages a diametrically opposite portion of the shoulder 56.
- a coil spring 62 Positioned between spring retainer 48 and the internal shoulder 60 of body 26 is a coil spring 62.
- a valve stem 64 is positioned within valve member 40 and includes an enlarged head 66 which cooperates with the upper surface of valve member 40 to form a valve.
- the valve stem 64 and the screw 50 are interconnected by means of a pair of chain links 68.
- An adjustment nut 76 on valve stem 64 supports one end of a coil spring '72, the other end being retained in the lower recess formed in valve member 40.
- a lock nut 74 retains the adjustment nut in its preselected position.
- the spring 62 is stronger than the spring 72. Therefore, under normal conditions, the assembly will assume the position illustrated in FIG. 2. Namely, the force of spring 62 forces the screw 50 and lever 54 upwardly to the limit formed by the stop tab 58 bearing against shoulder 56. Under these conditions, the chain links 68 pull the valve stem 64 upwardly against the force of spring 72, resulting in the valve being open. Gases evolving from the liquid refrigerant within flask 10 pass upwardly through the valve and out the ports 38 and vents M, then downwardly between the flask 10 and shell 16 and out the open bottom of the shell.
- actuating lever 54 is loosely coupled to the shank of screw 50 below its head. This permits the lever to be rotated 360 about the vertical axis of the stopper so that it may be positioned by the surgeon for maximum comfort and convenience.
- a valved stopper for a container having a top opening which comprises: a substantially tubular body sealingly engaging said top opening and defining a vent to atmosphere when so engaged; a first valve member on the interior of said body between said vent and the contents of said container; a second valve member selectively engageable with said first valve member to form a valve between the interior of said container and said vent; first spring means for normally closing said valve; a manually reciprocable valve actuating memher; means for loosely linking said actuating member to said second valve member; and second spring means, stronger than said first spring means, operatively connected with said actuating member for tensioning said linking means and maintaining said valve in a normally open condition.
- first valve member comprises an annular valve seat and said second valve member comprises a valve stem passing therethrough and including a substantially disc shaped head engageable with said seat.
- vent comprises a circumferential channel defined by the outer surface of said tubular body and at least one radial port extending from said channel to the interior of said tubular body.
- annular grip defines a circumferential shoulder on its inner surface and said actuating member comprises: a screw having a shank and an enlarged head; and an actuating lever engaging said shank below said head, one end of said lever pivotally engaging said shoulder, and the other end of said lever extending outwardly from said stopper for manual actuation.
- said adjusting means comprises a nut threadedly engaging said valve stem, said first spring means being positioned between said nut and said first valve member.
Abstract
Description
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23216572A | 1972-03-06 | 1972-03-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3739956A true US3739956A (en) | 1973-06-19 |
Family
ID=22872129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3739956D Expired - Lifetime US3739956A (en) | 1972-03-06 | 1972-03-06 | Valved stopper |
Country Status (1)
Country | Link |
---|---|
US (1) | US3739956A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3889681A (en) * | 1974-10-30 | 1975-06-17 | Jack Douglas Waller | Cryosurgical spraying apparatus |
US4116199A (en) * | 1976-12-06 | 1978-09-26 | Brymill Corporation | Cryosurgical instrument reservoir |
US4323626A (en) * | 1976-10-20 | 1982-04-06 | Chisso Corporation | Heat-adhesive composite fibers |
US5098428A (en) * | 1991-03-14 | 1992-03-24 | Sandlin Felix M | Cryosurgical spraying apparatus |
US20210161579A1 (en) * | 2019-12-02 | 2021-06-03 | Pacira Cryotech, Inc. | Cryogenic Devices With Venting Features |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1530346A (en) * | 1922-06-26 | 1925-03-17 | Harry D Binks | Spray tank |
AT215847B (en) * | 1959-09-14 | 1961-06-26 | Kurt Artmann | Portioning device for liquids |
US3018797A (en) * | 1958-07-28 | 1962-01-30 | Asbury S Parks | Valves |
US3485473A (en) * | 1965-09-15 | 1969-12-23 | Ferodo Sa | Automatic control valve,in particular for motor-car heating systems |
US3534739A (en) * | 1967-11-15 | 1970-10-20 | Brymill Corp | Cryosurgical delivery and application of liquified gas coolant |
-
1972
- 1972-03-06 US US3739956D patent/US3739956A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1530346A (en) * | 1922-06-26 | 1925-03-17 | Harry D Binks | Spray tank |
US3018797A (en) * | 1958-07-28 | 1962-01-30 | Asbury S Parks | Valves |
AT215847B (en) * | 1959-09-14 | 1961-06-26 | Kurt Artmann | Portioning device for liquids |
US3485473A (en) * | 1965-09-15 | 1969-12-23 | Ferodo Sa | Automatic control valve,in particular for motor-car heating systems |
US3534739A (en) * | 1967-11-15 | 1970-10-20 | Brymill Corp | Cryosurgical delivery and application of liquified gas coolant |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3889681A (en) * | 1974-10-30 | 1975-06-17 | Jack Douglas Waller | Cryosurgical spraying apparatus |
US4323626A (en) * | 1976-10-20 | 1982-04-06 | Chisso Corporation | Heat-adhesive composite fibers |
US4116199A (en) * | 1976-12-06 | 1978-09-26 | Brymill Corporation | Cryosurgical instrument reservoir |
US5098428A (en) * | 1991-03-14 | 1992-03-24 | Sandlin Felix M | Cryosurgical spraying apparatus |
WO1992016155A1 (en) * | 1991-03-14 | 1992-10-01 | Sandlin Felix W | Cryosurgical spraying apparatus |
US20210161579A1 (en) * | 2019-12-02 | 2021-06-03 | Pacira Cryotech, Inc. | Cryogenic Devices With Venting Features |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FRIGITRONICS OF CONN., INC. Free format text: MERGER;ASSIGNORS:FRG TWENTY-NINE CORPORATION (MERGED INTO);FRG TWENTY-EIGHT CORPORATION (CHANGED TO);REEL/FRAME:004858/0786 Effective date: 19870126 Owner name: FRIGITRONICS, INC., A CORP. OF DE Free format text: MERGER;ASSIGNORS:FRIGITRONICS, INC., A CORP. OF CT.;FRIGITRONICS OF CONN., INC., A CORP. OF CT;REEL/FRAME:004858/0780;SIGNING DATES FROM 19680314 TO 19861208 |
|
AS | Assignment |
Owner name: BANK OF NEW YORK COMMERCIAL CORPORATION, THE, 530 Free format text: SECURITY INTEREST;ASSIGNOR:FRIGITRONICS OF CONNECTICUT, INC.,;REEL/FRAME:004935/0800 Effective date: 19870724 Owner name: FRIGITRONICS INC., A DE CORPORATION Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FRIGITRONICS OF CONN., INC.;REEL/FRAME:004935/0794 Effective date: 19870724 |
|
AS | Assignment |
Owner name: FRIGI ACQUISITION, INC., A CORP. OF DE, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FRIGITRONICS OF CONN., INC.;REEL/FRAME:005262/0818 Effective date: 19900316 Owner name: FRIGI ACQUISITION, INC., 3145 PORTER DRIVE, PALO A Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FRIGITRONICS OF CONN., INC.;REEL/FRAME:005262/0818 Effective date: 19900316 |
|
AS | Assignment |
Owner name: FRIGITRONICS OF CONN., INC. Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BANK OF NEW YORK COMMERCIAL CORPORATION, THE;REEL/FRAME:005395/0050 Effective date: 19900612 |
|
AS | Assignment |
Owner name: COOPERVISION, INC. A NY CORPORATION, NEW YORK Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:FRIGI ACQUISITION, INC., A CORPORATION OF DE;REEL/FRAME:006047/0568 Effective date: 19911004 Owner name: FRIGI ACQUISITION, INC., CONNECTICUT Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:COOPERVISION, INC. A CORP. OF NEW YORK;REEL/FRAME:006047/0578 Effective date: 19911004 |