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Implantable access devices    

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United States Patent5556381   
Link to this pagehttp://www.wikipatents.com/5556381.html
Inventor(s)Ensminger; William D. (Ann Arbor, MI); Gavin; Robert F. (Ann Arbor, MI)
AbstractAn access port for implantation within the body of a patient for providing repeated access to a specific site within the patient and communicating with the site by an implanted internal catheter. The access ports in accordance with this invention include a housing having an inlet orifice leading to a reduced diameter guide passageway. The passageway includes a throat area designed to restrict passage of an external filament such as a hypodermic needle but permit passage of an external catheter extended from within the needle. This system allows the introduction of therapeutic agents, the removal of fluids from the body, or the introduction of sensing or articulating devices to the specific site with the patient while preventing a needle from entering the implanted catheter.
   














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Patent Text Patent PDF Print Page Summary File History
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Inventor     Ensminger; William D. (Ann Arbor, MI); Gavin; Robert F. (Ann Arbor, MI)
Owner/Assignee     The Michigan TransTech Corporation (Ann Arbor, MI)
Patent assignment
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Company News
Publication Date     September 17, 1996
Application Number     08/465,841
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     June 6, 1995
US Classification     604/288.03 604/175
Int'l Classification     A61M 005/00
Examiner     Yasko; John D.
Assistant Examiner    
Attorney/Law Firm     Harness, Dickey & Pierce PLC
Address
Parent Case     CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. patent application Ser. No. 08/407,483, filed Mar. 15, 1995, now U.S. Pat. No. 5,476,451 which is a continuation of U.S. patent application Ser. No. 08/259,053, filed Jun. 13, 1994, now U.S. Pat. No. 5,417,656 which is a continuation of U.S. patent application Ser. No. 08/148,394, Nov. 8, 1993 now issued U.S. Pat. No. 5,350,360, which is a divisional of U.S. patent application Ser. No. 07/940,619, filed Sep. 4, 1992 now issued U.S. Pat. No. 5,281,199 which is a continuation-in-part of U.S. application Ser. No. 818,626 filed on Jan. 10, 1992, entitled "Implantable Infusion Device" which is a continuation-in-part of U.S. application Ser. No. 654,661, filed on Feb. 15, 1991, which is a continuation-in-part of U.S. application Ser. No. 539,793 filed on Jul. 18, 1990 now issued as U.S. Pat. No. 5,053,013, which is a continuation-in-part of U.S. application Ser. No. 487,541 filed on Mar. 1,1990 now issued as U.S. Pat. No. 5,057,084; the disclosures of which are hereby incorporated by reference and are collectively referred to as "related applications" herein.
Priority Data    
USPTO Field of Search     604/93 604/82 604/83 604/86 604/167 604/175 604/241 604/242 604/243 604/116
Patent Tags     implantable access devices
   
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Market Size
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$5B - $10B
$2B - $5B
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