Thromboendarterectomy suction dissector

• US 5,358,507 A
• Filed: 12/15/1992
• Issued: 10/25/1994
• Est. Priority Date: 07/26/1991
• Status: Expired due to Fees

• Current Assignee: PAT O Daily Revocable Trust
• Original Assignee: Pat O. Daily
• Inventors: Daily, Pat O.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): DAWSON, GLENN K
• Application Number:
  US07/990,908
• Time in Patent Office: 679 Days
• Field of Search: 604/19, 604/49, 604/52, 604/53, 604/118, 604/119, 604/164, 604/264, 604/268, 604/902, 604/22, 604/27, 604/35, 604/170, 604/266, 604/267, 606/1, 606/159, 606/170, 606/171, 606/190, 606/194, 432/91, 128/662.06, 128/752, 128/20
• US Class Current: 606/159
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• CPC Class Codes: A61B 17/320708 Curettes, e.g. hollow scraping instruments
• CPC Class Codes: A61B 2017/320044 Blunt dissectors blunt suture needles A61B2017/06085
• CPC Class Codes: A61B 2017/320741 for stripping the intima or the internal plaque from a blood vessel, e.g. for endarterectomy
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: Y10S 604/902 Suction wands

Abstract

A suction dissector for performing coronary, systemic or pulmonary thromboendarterectomy including a unitary elongated instrument having an elongated tubular handle section and an elongated tubular probe section having a bore, the handle section having a connector at an outer end thereof for attachment to a source of vacuum, the probe section having a rounded tip and a plurality of ports in the tip for communicating with the bore.

Claims

1. A set of combination suction dissectors for performing pulmonary thromboendarterectomy, said set comprising:

a plurality of unitary elongated tubular instruments, each instrument having a handle section having means for connection to a source of vacuum, an elongated substantially rigid probe section having an unobstructed uniform cylindrical outer surface of from three to seven cm in length and 1.5 mm in diameter with a rounded tip of about 2 mm in diameter having a plurality of suction inlet ports and, one of said instruments having said probe section aligned coaxially of said handle section, and a plurality of said instruments each having said probe section at a different angle of about fifteen to about eighty degrees to said handle section.

2. A set of combination suction dissectors for performing pulmonary thromboendarterectomy, said set comprising:

a plurality of unitary, elongated tubular instruments, each instrument having a handle section having means for connection to a source of vacuum, an elongated substantially rigid probe section with a rounded tip having a plurality of suction inlet ports and, one of said instruments having said probe section aligned coaxially of said handle section, and a plurality of said instruments having said probe section at an angle to said handle section, wherein said plurality of said instruments having said probe section at an angle to said handle section comprises five in number and said angles are fifteen degrees, thirty degrees, forty-five degrees, sixty degrees and eighty degrees, respectively.

3. A set of combination suction dissectors for performing thromboendarerectony according to claim 2 wherein said rounded tips are spherical and two mm in diameter and has four suction inlet ports of 0.5 mm in diameter.

4. A set combination suction dissectors for performing thromboendarerectony according to claim 2 wherein the probe section of at least some of instruments is 5 cm in length.

5. A set of combination suction dissectors thromboendarerectony according to claim 2 wherein one of said probe sections is 3 cm in length.

6. A method of performing thromboendarterectony, said method comprising the steps of:

providing a set of combination dissector and suction instruments, each combination dissector and suction instrument comprising a unitary elongated substantially rigid structure having an elongated tubular handle section and an elongated tubular probe section having a through bore, said elongated tubular handle section having means at an outer end thereof for attachment to a source of suction, said probe section having a rounded tip and a plurality of ports in said rounded tip communicating with said bore, each combination dissector and suction instrument having said elongated tubular probe section at a different angle to said elongated tubular handle section, one of said combination dissector and suction instruments having said elongated tubular probe section aligned coaxially with said elongated tubular handle section, and a remainder of said combination dissector and suction instruments having said elongated tubular probe section at an angle to said elongated tubular handle section between about fifteen degrees and about eighty degrees, selecting a combination dissector and suction instrument from said set;

connecting said outer end of said combination dissector and suction instrument source of suction; and

inserting said elongated tubular probe section of said combined dissector and suction instrument into and moving it along an artery forcing plaque from walls thereof while simultaneously therewith operating said source of suction to maintain an area around said rounded tip substantially free of fluids.

7. A method according to claim 6 wherein said remainder comprises five in number and said angles are fifteen degrees, thirty degrees, forty-five degrees, sixty degrees and eighty degrees, respectively.

8. A method according to claim 7 wherein said rounded tip is two mm in diameter and said plurality of ports includes four vacuum ports of 0.5 mm in diameter.

9. A method according to claim 8 wherein each elongated tubular probe section is 5 cm in length.