Instrument for subcutaneous insertion of an injection reservoir

• US 4,751,926 A
• Filed: 09/12/1986
• Issued: 06/21/1988
• Est. Priority Date: 09/12/1986
• Status: Expired due to Fees

• Current Assignee: Dow Corning Wright Corp (Dow, Inc.)
• Original Assignee: Dow Corning Wright Corp (Dow, Inc.)
• Inventors: Sasaki, Gordon H.
• Primary Examiner(s): Truluck, Dalton L.
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US06/907,204
• Time in Patent Office: 648 Days
• Field of Search: 128/303 R, 128/330, 128/341, 128/361, 123/7, 123/8, 604/57, 604/59, 604/60
• US Class Current: 606/108
• CPC Class Codes: A61B 2017/00353 one mechanical instrument performing multiple functions, e.g. cutting and grasping
• CPC Class Codes: A61B 2017/320056 Tunnelers
• CPC Class Codes: A61B 90/00 Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges protective face masks A41D13/11; surgeon's or patient's gowns or dresses A41D13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M1/00
• CPC Class Codes: A61F 2/12 Mammary prostheses and implants
• CPC Class Codes: A61M 2039/0232 having means for facilitating the insertion into the body
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276

Abstract

An instrument for subcutaneously inserting an injection reservoir attached to an inflatable prosthesis by means of an elongated fluid conduit is disclosed. The instrument has a hollowed end which holds the injection reservoir to be inserted in a mating, releasable fashion and that end is attached to a handle for guiding the hollowed end to the desired site. Desirably, but optionally, the end of the handle of the instrument is provided with a shaped tapered portion to act as a dilator to create a subcutaneous pocket prior to insertion of the injection reservoir.

Claims

1. An instrument for the subcutaneous placement of a self-sealing injection reservoir having a rear portion and a hollow interior which communicates with the interior of an implantable, inflatable prosthesis by means of an elongated fluid conduit, said instrument comprising an elongaed member having a first hollowed end having a recess dimensioned to matingly receive the rear portion of the injection reservoir in a releasable relationship, a cover on said first end which forms part of the recess, said cover positioned to fit over at least a part of the rear portion of the injection reservoir when the injection reservoir is received in the recess, and an opposite second end which serves as a handle means for guiding the first end subcutaneously into the body, said first end being of an elongated, substantially tapered configuration with an edge shaped to permit the first end to push aside tissue ahead of the first end when it is inserted subcutaneously and thereby carry the reservoir to the desired subcutaneous site, said first end dimensioned to blend in with the surface of the reservoir to permit the first end along with the reservoir to be smoothly inserted subcutaneously into the body.

2. The instrument as claimed in claim 1 wherein said first end further contains a channel through which said fluid conduit is passed before the instrument carrying the reservoir is inserted subcutaneously, said channel being placed on the first end at the rear of the reservoir being inserted such that the channel is at the rear of the first end facing the handle.

3. An instrument as claimed in claim 2 wherein the channel is a bore.

4. An instrument as claimed in claim 1 wherein said recess has a flat bottom surface on which the injection reservoir is to rest.

5. An instrument as claimed in claim 1 wherein said second end has a tapered edge to push aside subcutaneous tissue.