Tissue perforator

• US 4,417,580 A
• Filed: 12/23/1980
• Issued: 11/29/1983
• Est. Priority Date: 12/21/1979
• Status: Expired due to Fees

• Current Assignee: Alfons Birchmeier
• Original Assignee: Alfons Birchmeier
• Inventors: Birchmeier, Alfons
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US06/220,168
• Time in Patent Office: 1,071 Days
• Field of Search: 128/329 R, 128/253, 128/315, 128/355, 128/305.5, 128/305, 30/287, 30/304, 30/305
• US Class Current: 606/183
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 17/32093 for skin incisions

Abstract

In order to remove as much poison as possible from bites or stings of poisonous animals, a plurality of incisions is made into the flesh tissue being at least approximately parallel to each other and several times interrupted in their longitudinal direction. For this a tissue perforating device is used, which is equipped with a knive head (2) abruptly movable in the interior of a housing member (1). The knive head being provided with three rows of knives offset lateral, the cutting edge (7) of the knives being rectilinear and at right angles to the direction of penetration into the tissue.

Claims

1. A tissue perforating device, for use in the treatment of body injuries of a person resulting from bites or stings of poisonous animals,

comprising in combination,

an elongated hollow holding member,

a knife head normally disposed inside said holding member and being movable in opposite directions along said holding member, and operable to be rapidly advanced in one of said directions to project out of said holding member and adapted to move towards said body, and including at least two knives arranged side by side in with other knives off-set in relation to them, all the knives being substantially parallel to each other,

a compression spring,

a tensioning arrangement for placing the knife head under tension against the action of said spring thereby keeping it in the tensioned condition and a releasing arrangement operative for releasing the tensioned knife head so that it is abruptly moved in said one direction under the action of the compression spring,

the cutting edge of each knife being substantially rectilinear and substantially perpendicular to said one direction whereby, when said knife head is rapidly moved in said one direction, the knives will penetrate the tissue of the body and make therein a plurality of substantially parallel incisions.

2. Device according to claim 1, further comprising a spindle rotatable relative to the knife head and longitudinally extending in the opposite direction beyond said holding member,

said tensioning arrangement including a path limiting member movable relative to said holding member in said directions but guided so as to be non-rotatable,

said spindle engaging said path limiting member,

said holding member being provided with a stop which limits the movement of the path limiting member in said one direction.