Pen-type injector drive mechanism

Details Pen-type injector drive mechanism Pen-type injector drive mechanism

1996-09-05

1998-10-13

Buiz, Michael

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604156, A61M 500

Patent

active

058206027

ABSTRACT:
A medication injection mechanism, for delivering a dosage of medication from a medication cartridge having a piston, includes a two-piece drive shaft, a rachet mechanism, and a drive mechanism. The two-piece drive shaft includes a plunger portion and a drive portion. The plunger portion has an end that contacts the piston of the medication cartridge, ratchet teeth disposed on the sides of the plunger portion that define a thickness of the plunger portion, and an opening to provide a passage through the plunger portion of the two-piece drive shaft. The drive portion is formed by rails that are coupled together by a connector that passes through the opening in the plunger portion so that the drive portion is coupled to the plunger portion, and can move relative to the plunger portion. Each of the rails forming the drive portion has threads on a surface that extend beyond the defined thickness of the plunger portion. The ratchet mechanism engages with the ratchet teeth of the plunger portion to permit the movement of the plunger portion toward the piston of the medication cartridge and to inhibit movement of the plunger portion away from the piston of the medication cartridge. Also, the drive mechanism engages with the threads on the rails of the drive portion, but is free of contact with the ratchet teeth on the plunger portion to adjust the position of the drive portion relative to the plunger portion so that the drive portion can be moved toward the piston of the medication cartridge a fixed distance and the plunger portion is moved a distance that is less than or equal to the fixed distance.

REFERENCES:
patent: 1997129 (1935-04-01), Taylor et al.
patent: 2221739 (1940-11-01), Reiter
patent: 2605763 (1952-08-01), Smoot
patent: 2632445 (1953-03-01), Kas
patent: 2695023 (1954-11-01), Brown
patent: 2718299 (1955-09-01), Atwater et al.
patent: 3110310 (1963-11-01), Cislak
patent: 3141583 (1964-07-01), Mapel et al.
patent: 3293749 (1966-12-01), George et al.
patent: 3348545 (1967-10-01), Sarnoff et al.
patent: 3481510 (1969-12-01), Allen, Jr.
patent: 3517668 (1970-06-01), Brickson
patent: 3583399 (1971-06-01), Ritsky
patent: 3894663 (1975-07-01), Carhart et al.
patent: 3977574 (1976-08-01), Thomas
patent: 4022207 (1977-05-01), Citrin
patent: 4099548 (1978-07-01), Sturm et al.
patent: 4114619 (1978-09-01), Wagner
patent: 4139008 (1979-02-01), Wagner
patent: 4146029 (1979-03-01), Ellinwood, Jr.
patent: 4169474 (1979-10-01), Wagner
patent: 4284077 (1981-08-01), Wagner
patent: 4333458 (1982-06-01), Margulies et al.
patent: 4393870 (1983-07-01), Wagner
patent: 4395921 (1983-08-01), Oppenlander
patent: 4413760 (1983-11-01), Paton
patent: 4415101 (1983-11-01), Shapiro et al.
patent: 4425121 (1984-01-01), Young et al.
patent: 4435173 (1984-03-01), Siposs et al.
patent: 4444560 (1984-04-01), Jacklich
patent: 4457712 (1984-07-01), Dragan
patent: 4470317 (1984-09-01), Sabloewski et al.
patent: 4475905 (1984-10-01), Himmelstrup
patent: 4498904 (1985-02-01), Turner et al.
patent: 4509905 (1985-04-01), Michel
patent: 4526294 (1985-07-01), Hirschmann et al.
patent: 4529401 (1985-07-01), Leslie et al.
patent: 4538616 (1985-09-01), Rogoff
patent: 4573970 (1986-03-01), Wagner
patent: 4581022 (1986-04-01), Leonard et al.
patent: 4592745 (1986-06-01), Rex et al.
patent: 4600403 (1986-07-01), Wagner
patent: 4613328 (1986-09-01), Boyd
patent: 4659327 (1987-04-01), Bennett et al.
patent: 4664128 (1987-05-01), Lee
patent: 4710172 (1987-12-01), Jacklich et al.
patent: 4710178 (1987-12-01), Leonard et al.
patent: 4820287 (1989-04-01), Leonard
patent: 4865591 (1989-09-01), Sams
patent: 4883472 (1989-11-01), Michel
patent: 4936833 (1990-06-01), Sams
patent: 4950246 (1990-08-01), Muller
patent: 4959056 (1990-09-01), Dombrowski et al.
patent: 4998570 (1991-03-01), Strong
patent: 5024656 (1991-06-01), Gasaway et al.
patent: 5047044 (1991-09-01), Smith et al.
patent: 5050612 (1991-09-01), Matsumura
patent: 5069668 (1991-12-01), Boydman
patent: 5085642 (1992-02-01), Sarnoff et al.
patent: 5092842 (1992-03-01), Bechtold et al.
patent: 5102393 (1992-04-01), Sarnoff et al.
patent: 5104380 (1992-04-01), Holman et al.
patent: 5112317 (1992-05-01), Michel
patent: 5114406 (1992-05-01), Gabriel et al.
patent: 5139484 (1992-08-01), Hazon et al.
patent: 5180371 (1993-01-01), Spinello
patent: 5226895 (1993-07-01), Harris
patent: 5226896 (1993-07-01), Harris
patent: 5244461 (1993-09-01), Derlien
patent: 5244465 (1993-09-01), Michel
patent: 5249584 (1993-10-01), Karkar et al.
patent: 5256157 (1993-10-01), Samiotes et al.
patent: 5279294 (1994-01-01), Anderson et al.
patent: 5279585 (1994-01-01), Balkwill
patent: 5279586 (1994-01-01), Balkwill
patent: 5383865 (1995-01-01), Michel
patent: 5425716 (1995-06-01), Kawasaki et al.
patent: 5429602 (1995-07-01), Hauser
patent: 5540664 (1996-07-01), Wyrick
patent: 5593390 (1997-01-01), Castellano et al.
PCT Written Opinion issued by the European Patent Office on Nov. 3, 1995.
Search Report for PCT/US95/02727, mailed Jun. 20, 1995.
Annual International Conference of the IEEE Engineering in Medicine and Biology Society, "An Optical and RF Telemetry Drug Injection Control and ECG System for Awake Small Animal Studies", vol. 13, No. 5, 1991.
PCT International Search Report, Jan. 20, 1997.

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