Injection instrument with ultrasonic oscillating element

• US 5,197,946 A
• Filed: 07/10/1991
• Issued: 03/30/1993
• Est. Priority Date: 06/27/1990
• Status: Expired due to Term

• Current Assignee: Shunro Tachibana
• Original Assignee: Shunro Tachibana, Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Inventors: Tachibana, Shunro
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): Funk, Stephen R.
• Application Number:
  US07/727,777
• Time in Patent Office: 629 Days
• Field of Search: 604/19, 604/21, 604/22, 604/35, 604/43, 128/24 AA, 128/200.16, 128/207.14
• US Class Current: 604/22
• CPC Class Codes: A61B 17/2202 the ultrasound transducer being inside patient's body at the distal end of the catheter
• CPC Class Codes: A61M 2205/058 with ultrasound therapy
• CPC Class Codes: A61M 25/00 Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00
• CPC Class Codes: A61M 37/0092 using ultrasonic, sonic or infrasonic vibrations, e.g. phonophoresis
• CPC Class Codes: A61M 5/00 Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests vaccination appliances for veterinary use A61D1/025 ; tube connectors, tube couplings, valves or branch units specially adapted for medical use A61M39/00; containers specially adapted for medical or pharmaceutical purposes A61J1/00; combinations of vial and syringe for mixing or transferring their contents A61J1/20; holders for containers for collecting, storing or administering blood or medical fluids A61J1/16
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• CPC Class Codes: A61N 7/00 Ultrasound therapy lithotripsy A61B17/22, A61B17/225; massage using supersonic vibration A61H23/00 ; using ultrasound for introducing media into the body A61M37/0092

Abstract

A medicinal injection instrument for injecting a medicinal medium into a living body includes a tubular arrangement for conducting a medicinal medium to an injection site, the tubular arrangement having a distal end. An ultrasonic oscillator device has an ultrasonic oscillator element juxtaposed to the distal end such that when the instrument is inserted into a living body with the distal end disposed juxtaposed to the injection site, the ultrasonic oscillator element is also disposed juxtaposed to the injection site to thereby enhance diffusion and penetration of the medicinal medium into the body tissue.

Claims

1. A medicinal injection instrument for injecting a medicinal medium into body tissue of a living body comprising a tubular means for conducting a medicinal medium to an injection site, said tubular means having a distal end portion, said distal end portion having a terminating end, an ultrasonic means comprising an ultrasonic oscillator element means disposed at said distal end portion and extending to said terminating end such that when the instrument is inserted into a living body with said distal end portion disposed juxtaposed to an injection site, said ultrasonic oscillator element means is also disposed juxtaposed to the injection site to thereby enhance diffusion and penetration of said medicinal medium into body tissue of said living body, said ultrasonic oscillating element means comprising a hollow cylindrical oscillating member having inner and outer cylindrical walls and cylindrical electrodes disposed on said inner and outer cylindrical walls.

2. A medicinal injection instrument for injecting a medicinal medium into body tissue of a living body comprising a tubular means for conducting a medicinal medium to an injection site, said tubular means having a distal end portion, said distal end portion having a terminating end, an ultrasonic means comprising an ultrasonic oscillator element means disposed at said distal end portion and extending to said terminating end such that when the instrument is inserted into a living body with said distal end portion disposed juxtaposed to an injection site, said ultrasonic oscillator element means is also disposed juxtaposed to the injection site to thereby enhance diffusion and penetration of said medicinal medium into body tissue of said living body, said ultrasonic oscillating element means comprising an oscillating plate member disposed between two flat electrodes, said oscillating plate member and said two flat electrodes each have a rectangular configuration.

3. A medicinal injection instrument for injecting a medicinal medium into body tissue of a living body comprising a tubular means for conducting a medicinal medium to an injection site, said tubular means having a distal end portion, said distal end portion having a terminating end, an ultrasonic means comprising an ultrasonic oscillator element means disposed at said distal end portion and extending to said terminating end such that when the instrument is inserted into a living body with said distal end portion disposed juxtaposed to an injection site, said ultrasonic oscillator element means is also disposed juxtaposed to the injection site to thereby enhance diffusion and penetration of said medicinal medium into body tissue of said living body, said ultrasonic oscillating element means comprising a hollow cylindrical insulating member having a central bore and a longitudinally extending passage spaced from said central bore, said ultrasonic oscillating element means further comprising an oscillating member disposed in said passage, said oscillating member having longitudinal ends, said ultrasonic oscillating means further comprising electrodes at said longitudinal ends of said oscillating member.

4. A medicinal injection instrument according to claim 3, wherein said ultrasonic oscillating element means further comprises insulating means sealing the longitudinal ends of said passage such that said oscillating member and said electrodes are sealed in said passage.