MORGAN NEDDLE BIOPSY GUIDE

INSTRUMENT DE GUIDAGE MORGAN POUR BIOPSIE A L'AIGUILLE

English Abstract

ABSTRACT
An apparatus I call the "Morgan Needle Biopsy Guide" is for use in
Medicine, particularly for biopsy of the prostate gland. In recent
years Biopsy Guns have been developed which are fast and require less
anaesthetic but have a six inch long flexible needle which needs
stabilization and guiding to the tissue being biopsied. The "Morgan
Needle Biopsy Guide" is made of surgical stainless steel in two parts
welded together. The first part is a slim tube than can accommodate the
biopsy needle, with a slight curvature to fit the relaxed index finger.
The second part is cut of malleable stainless steel, and has two nearly
complete rings that go around the near and far end of the index finger
like a sleeve. They provide stability to the "Guide" and can be bent
to fit snugly on different diameter fingers. This piece also has a
"spine" portion which runs the length of the index finger and onto the
palm of the hand where it widens out to provide a guard to protect the
users hand from the needle. The palm end has a shoulder which the Guns
fit up to, ensuring the needle is at appropriate length.

Claims

CLAIMS
1) A stronger construction than previous biopsy guides
is achieved by welding the guide tube onto a
corrugated spine piece, making the unit more durable.
2) The unit has two finger rings which are malleable
surgical stainless steel. This keeps the unit in
line with the index finger so guidance is guaranteed
and the rings can be spread or tightened to fit
different finger widths.
3) The palm end has been broadened out to create a
three centimeter guard plate which helps prevent
accidental puncture of the user's hand by the
biopsy needle.
4) The palm end of the unit has a one centimeter
dropped shoulder which allows the gun to be
positioned against the unit end, thereby having
the needle tip exactly at the end of the guide tube.
5) The widened palm end of the unit can be easily
grasped, allowing the user to pull it back, exposing
the index finger tip beyond the guide unit so as to
palpate the biopsy site unhindered. The guide unit can
then be slid forward along the index finger to place the
needle tip directly against the tissue to be biopsied.
6) The good stabilization of the gun loaded biopsy needle
using this unit will allow other sites such as vaginal
or subcutaneous masses to be biopsied.

Description

2~9382~
DIS~LOSURE
This product has been designed in response to the increasing incidence
of prostate cancer found in our aging population and for the increased
awareness of that disease in the public which has created higher demand
for prostate biopsies. New biopsy guns producing less trauma and
discomfort to the patient are now on the market, but improved guides to
direct these biopsies have not been developed.
The "Morgan Needle Biopsy Guide" is made of surgical stainless steel
with welded construction and can be sterilized by "gassing", "soaking"
or "flashing techniques.
The base plate is cut out of 25/1000 thickness, Atlas type 301, 3/4 hard
temper stainless steel, so that the finger rings remain malleable and
can be bent to fit the users finger diameter. The main plate is cut
out to the dimensions in the diagram attached (true scale). The edges
are then deburred as necessary. Using dies, the finger rings are formed
into incomplete circles, the heel is bent at right angles to accommodate
the thickness of the gun body when positioned in the user's hand, and
then the length is gently curved to fit a relaxed finger.
The second piece is made of Atlas type 304 stainless steel tubing with
1/8" outer diameter and 28/1000 wall thickness. The gun end i9 slightly
flared to ease insertion of a needle. The length is gently curved to
match the base plate, and the two pieces are finely welded together with
the tube protruding about Smm. beyond the end of the base plate.
It is worn on the user's index finger (right or left) as in the attached
freehand drawing, with a rubber glove pulled overtop. The glove is
pun~tured to insert the needle through the guide channel.
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Representative Drawing