Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1996-02-29
1998-09-01
Buiz, Michael
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 49, A61M 530
Patent
active
058003886
ABSTRACT:
A plunger/ram assembly adapted for a hypodermic fluid injector having a nozzle body defining a fluid chamber and an orifice communicating with the chamber. The plunger/ram assembly comprises a plunger adapted to be movably positioned in the chamber and a ram assembly. The ram assembly is operatively connected to the plunger for drawing fluid into and expelling fluid out the chamber through the orifice. The ram assembly includes first and second driving members spaced apart by a preselected free travel distance and a resilient biasing member having a preselected preload. The resilient biasing member is operatively disposed for maintaining the free travel distance when the preload is greater than a force applied to the first driving member. The maximum fluid pressure generated by the plunger/ram assembly is controlled by a free travel distance or gap existing between first and second driving members before the injector is fired. Prior to firing, the gap is accurately maintained during movement of the plunger/ram assembly by a resilient spring member. This arrangement ensures that the injected fluid will be delivered to the patient's body at a desired pressure sufficient to properly pierce the patient's skin or the like.
REFERENCES:
patent: D304616 (1989-11-01), Dunlap et al.
patent: D349958 (1994-08-01), Hollis et al.
patent: 396107 (1889-01-01), Nickerson
patent: 489757 (1893-01-01), Reilly
patent: 1567517 (1925-12-01), Kisbey
patent: 1973706 (1934-09-01), Hawley
patent: 2322244 (1943-06-01), Lockhart
patent: 2322245 (1943-06-01), Lockhart
patent: 2380534 (1945-07-01), Lockhart
patent: 2390246 (1945-12-01), Folkman
patent: 2398544 (1946-04-01), Lockhart
patent: 2413303 (1946-12-01), Folkman
patent: 2459875 (1949-01-01), Folkman
patent: 2547099 (1951-04-01), Smoot
patent: 2605763 (1952-08-01), Smoot
patent: 2635602 (1953-04-01), Hein
patent: 2653602 (1953-09-01), Smoot
patent: 2670121 (1954-02-01), Scherer et al.
patent: 2671347 (1954-03-01), Scherer
patent: 2681653 (1954-06-01), Kuhne
patent: 2688968 (1954-09-01), Scherer
patent: 2699166 (1955-01-01), Dickinson, Jr. et al.
patent: 2704542 (1955-03-01), Scherer
patent: 2704543 (1955-03-01), Scherer
patent: 2705953 (1955-04-01), Potez
patent: 2714887 (1955-08-01), Venditty
patent: 2717597 (1955-09-01), Hein, Jr.
patent: 2737946 (1956-03-01), Hein, Jr.
patent: 2754818 (1956-07-01), Scherer
patent: 2762369 (1956-09-01), Venditty
patent: 2762370 (1956-09-01), Venditty
patent: 2764977 (1956-10-01), Ferguson
patent: 2789839 (1957-04-01), Siebert
patent: 2798485 (1957-07-01), Hein, Jr.
patent: 2798486 (1957-07-01), Hein, Jr.
patent: 2800903 (1957-07-01), Smoot
patent: 2816543 (1957-02-01), Venditty et al.
patent: 2816544 (1957-12-01), Scherer et al.
patent: 2820655 (1958-01-01), Hilemam
patent: 2821193 (1958-01-01), Ziherl et al.
patent: 2821981 (1958-02-01), Ziherl et al.
patent: 2825332 (1958-03-01), Johnson
patent: 2902994 (1959-09-01), Scherer
patent: 2921582 (1960-01-01), Sadd
patent: 2928390 (1960-03-01), Venditty et al.
patent: 3057349 (1962-10-01), Ismach
patent: 3066670 (1962-12-01), Stauffer
patent: 3115133 (1963-12-01), Morando
patent: 3123070 (1964-03-01), Kath
patent: 3129708 (1964-04-01), Krantz
patent: 3130723 (1964-04-01), Venditty et al.
patent: 3131692 (1964-05-01), Love
patent: 3138157 (1964-06-01), Ziherl et al.
patent: 3140713 (1964-07-01), Ismach
patent: 3147967 (1964-09-01), Bougeard
patent: 3167071 (1965-01-01), Venditty
patent: 3189029 (1965-06-01), Stephens
patent: 3202151 (1965-08-01), Kath
patent: 3245703 (1966-04-01), Manly
patent: 3292622 (1966-12-01), Banker
patent: 3308818 (1967-03-01), Rutkowski
patent: 3330276 (1967-07-01), Gordon
patent: 3330277 (1967-07-01), Gabriels
patent: 3335722 (1967-08-01), Lowry et al.
patent: 3353537 (1967-11-01), Knox et al.
patent: 3406684 (1968-10-01), Tsujino
patent: 3424154 (1969-01-01), Kinsley
patent: 3461867 (1969-08-01), Zimmet et al.
patent: 3476110 (1969-11-01), Yahner
patent: 3490451 (1970-01-01), Yahner
patent: 3507276 (1970-04-01), Burgess
patent: 3518990 (1970-07-01), Banker
patent: 3521633 (1970-07-01), Yahner
patent: 3526225 (1970-09-01), Isobe
patent: 3527212 (1970-09-01), Clark
patent: 3557784 (1971-01-01), Shields
patent: 3561443 (1971-02-01), Banker
patent: 3625208 (1971-12-01), Frost et al.
patent: 3659587 (1972-05-01), Baldwin
patent: 3688765 (1972-09-01), Gasaway
patent: 3714943 (1973-02-01), Yanof et al.
patent: 3768472 (1973-10-01), Hodosh et al.
patent: 3779371 (1973-12-01), Rovinski
patent: 3782380 (1974-01-01), Van Der Gaast
patent: 3783895 (1974-01-01), Weichselbaum
patent: 3788315 (1974-01-01), Laurens
patent: 3805783 (1974-04-01), Ismach
patent: 3827601 (1974-08-01), Magrath et al.
patent: 3838689 (1974-10-01), Cohen
patent: 3908651 (1975-09-01), Fudge
patent: 3938520 (1976-02-01), Scislowicz et al.
patent: 3945379 (1976-03-01), Pritz et al.
patent: 3945383 (1976-03-01), Bennett et al.
patent: 4059107 (1977-11-01), Iriguchi et al.
patent: 4089334 (1978-05-01), Schwebel et al.
patent: 4141675 (1979-02-01), O'Neill
patent: 4328802 (1982-05-01), Curley et al.
patent: 4387879 (1983-06-01), Tauschinski
patent: 4421508 (1983-12-01), Cohen
patent: 4447225 (1984-05-01), Taff et al.
patent: 4500075 (1985-02-01), Tsuchiya et al.
patent: 4505709 (1985-03-01), Froning et al.
patent: 4507113 (1985-03-01), Dunlap
patent: 4518385 (1985-05-01), Lindmayer et al.
patent: 4561856 (1985-12-01), Cochran
patent: 4588403 (1986-05-01), Weiss et al.
patent: 4596556 (1986-06-01), Morrow et al.
patent: 4619651 (1986-10-01), Kopfer et al.
patent: 4623332 (1986-11-01), Lindmayer et al.
patent: 4626242 (1986-12-01), Fejes et al.
patent: 4662878 (1987-05-01), Lindmayer
patent: 4675020 (1987-06-01), McPhee
patent: 4680027 (1987-07-01), Parsons et al.
patent: 4709686 (1987-12-01), Taylor et al.
patent: 4722728 (1988-02-01), Dixon
patent: 4744786 (1988-05-01), Hooven
patent: 4768568 (1988-09-01), Fournier et al.
patent: 4771758 (1988-09-01), Taylor et al.
patent: 4775173 (1988-10-01), Sauer
patent: 4790824 (1988-12-01), Morrow et al.
patent: 4834149 (1989-05-01), Fournier et al.
patent: 4850967 (1989-07-01), Cosmai
patent: 4863427 (1989-09-01), Cocchi
patent: 4874367 (1989-10-01), Edwards
patent: 4883483 (1989-11-01), Lindmayer
patent: 4909488 (1990-03-01), Seiber et al.
patent: 4923072 (1990-05-01), Rilliet
patent: 4940460 (1990-07-01), Casey et al.
patent: 4941880 (1990-07-01), Burns
patent: 4948104 (1990-08-01), Wirges
patent: 4950240 (1990-08-01), Greenwood et al.
patent: 4989905 (1991-02-01), Rajecki
patent: 5024656 (1991-06-01), Gasaway et al.
patent: 5031266 (1991-07-01), Tillman et al.
patent: 5041715 (1991-08-01), Muller
patent: 5061263 (1991-10-01), Yamazaki et al.
patent: 5062830 (1991-11-01), Dunlap
patent: 5064413 (1991-11-01), McKinnon et al.
patent: 5066280 (1991-11-01), Braithwaite
patent: 5073165 (1991-12-01), Edwards
patent: 5085332 (1992-02-01), Gettig et al.
patent: 5116313 (1992-05-01), McGregor
patent: 5135507 (1992-08-01), Haber et al.
patent: 5161786 (1992-11-01), Cohen
patent: 5165560 (1992-11-01), Ennis, III et al.
patent: 5176406 (1993-01-01), Straghan
patent: 5181912 (1993-01-01), Hammett
patent: 5188599 (1993-02-01), Botich et al.
patent: 5190523 (1993-03-01), Lindmayer
patent: 5193517 (1993-03-01), Taylor et al.
patent: 5209362 (1993-05-01), Lutzker
patent: 5224932 (1993-07-01), Lappas
patent: 5226882 (1993-07-01), Bates
patent: 5292308 (1994-03-01), Ryan
patent: 5304128 (1994-04-01), Haber et al.
patent: 5312335 (1994-05-01), McKinnon et al.
patent: 5312577 (1994-05-01), Peterson et al.
patent: 5316198 (1994-05-01), Fuchs et al.
patent: 5334144 (1994-08-01), Alchas et al.
patent: 5352203 (1994-10-01), Vallelunga et al.
patent: 5356380 (1994-10-01), Hoekwater et al.
patent: 5360146 (1994-11-01), Ikushima
patent: 5383851 (1995-01-01), McKinnon, Jr. et al.
patent: 5399163 (1995-03-01), Peterson et al.
patent: 5407431 (1995-04-01), Botich et al.
patent: 5413471 (1995-05-01), Yamauchi
patent: 5423756 (1995-06-01), Van der Merwe
patent: 5480381 (1996-01-01), Weston
patent: 5499972 (1996-03-01), Parsons
patent: 5503627 (1996-04-01), McKinnon et al.
pate
Mulhauser Paul
Schiff David
Buiz Michael
Medi-Ject Corporation
Truong Kevin
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