Cryosurgical instrument with grip

• US 6,036,686 A
• Filed: 08/17/1998
• Issued: 03/14/2000
• Est. Priority Date: 08/17/1998
• Status: Expired due to Fees

• Current Assignee: Brymill Corporation
• Original Assignee: Brymill Corporation
• Inventors: Griswold, Thomas A.
• Primary Examiner(s): Dvorak, Linda C. M.
• Assistant Examiner(s): Blaise, Brad C.
• Application Number:
  US09/135,207
• Time in Patent Office: 575 Days
• Field of Search: 606/20, 606/21, 606/22, 606/23, 606/24, 606/25, 606/26, 220/560.04, 220/560.12, 220/560.15, 220/701, 220/739, 220/740
• US Class Current: 606/20
• CPC Class Codes: A61B 18/0218 with open-end cryogenic probe, e.g. for spraying fluid directly on tissue or via a tissue-contacting porous tip

Abstract

A hand-held cryosurgical instrument is provided with an insulating, cold-resistive, non-slip grip, which fits onto the neck of a cryosurgical instrument by means of machined threads. The grip has a lip for the users hand to rest against to protect it from the cold metal of the instrument.

Claims

1. A cryosurgical instrument, comprising:

a reservoir for holding cryogen, said reservoir having a threaded collar joined to an upper edge thereof; and

a threaded cap, including a cryogen delivery and control portion, secured to said collar through the engagement of the internal threads of the cap with the external threads of the collar;

characterized by the improvement comprising;

said reservoir having exterior threads near an upper end thereof below said collar, and

a generally cylindrical grip composed of a hard, insulating plastic, said grip having internal threads complimentary to said external threads, said grip being joined to said reservoir by said exterior and interior threads.

2. A cryosurgical instrument according to claim 1 wherein:

said grip has a peripheral lip extending outwardly of an upper edge thereof.

3. A cryosurgical instrument according to claim 2 wherein:

said grip has a lower, increased diameter portion and a reduced diameter portion extending between said increased diameter portion and said lip.

4. A cryosurgical instrument having a hand-held grip, said grip being formed of rigid plastic and having a generally cylindrical shape with a reduced diameter portion near a first end, an enlarged diameter portion near a second end, having internal machined threads therein which are complementary to external rolled threads on a neck of said cryosurgical instrument, and a lip extending radially outward around the entire periphery of said reduced diameter portion at said first end.