Surgery – Instruments – Cutting – puncturing or piercing
Reexamination Certificate
1999-09-29
2001-03-27
Thaler, Michael H. (Department: 3731)
Surgery
Instruments
Cutting, puncturing or piercing
Reexamination Certificate
active
06206901
ABSTRACT:
FIELD OF THE INVENTION
The object of the present invention is a puncturing device in particular for puncturing skin of a patient in order to take a blood sample for diagnostic purpose.
BACKGROUND OF THE INVENTION
A device for puncturing comprising a sleeve and a pushbutton placed on the one end of the sleeve, is known from U.S. Pat. No. 5,356,420. The second end of the sleeve terminates with a bottom comprising an opening. Inside the sleeve there is a slidably mounted piston, witch at the end closer to the pushbutton is terminated with a pusher, and at end closer to the bottom of the sleeve is terminated with puncturing tip. Inside the sleeve between the end face of the pushbutton and the piston there is placed a driving spring, and between the piston and the bottom of the sleeve there is place a return spring. The piston on the outer circumference has wings resting on inner projection of the sleeve. The U.S. Pat. No. 4,139,011 discloses a device for puncturing skin of a patient comprising a housing in a form of a sleeve with a closed bottom, which, at the other end, is narrowing and has a small opening. Inside the housing there is a slidably mounted rod, which at the one end is terminated with a slider placed inside the opening of the housing. At the other end rod comprises an elastic arm terminated with a holding tooth, which is resting on the edge of the gap in the housing. Between the rod and the bottom a spring is placed and at the other end of a slider a puncturing insert is mounted.
The European patent specification no 0 694 286 describes a device actuating the lancet for puncturing skin of a patient, with a mechanism for pushing out and drawing in a lancet blade. The device comprises a housing with a gap for pushing out a lancet blade. Mechanism actuating comprises a driving spring placed inside the housing, which after being released is pushing out a lancet blade of the gap of the housing, said lancet blade punctures patient's skin and then draws back into the housing.
Japanese patent specification no 61-36607 describes a device for puncturing of the skin, comprising a driving-triggering tubular unit and an attached magazine with a spring, for inserts terminated with a puncturing tip.
SUMMARY OF THE INVENTION
The nature of the puncturing device according to the invention is that the device comprises a puncturing unit with exchangeable puncturing insert, driving unit, connected with puncturing unit, comprising a ram placed inside the body of driving unit, and at the ram between its one end pointing towards puncturing insert, and a body, a driving spring is placed, and the second end of the ram is sustained in the body, and on the driving unit a triggering unit is placed, comprising a button which an inner projection pointing towards the second end of a ram.
Preferably the puncturing unit comprises a housing, with an opening placed at the bottom of said housing and the first return spring situated inside of the said housing.
Preferably exchangeable puncturing insert is placed inside of the housing of puncturing unit. Preferably body of the driving unit comprises inner narrowing in which a ram is placed, moreover said narrowing is a base for a driving spring.
Preferably the body of the driving unit comprises a seating in which the second end of the ram is placed.
Preferably a triggering unit comprises the second return spring placed between the upper edge of the driving unit and the bottom of the button.
REFERENCES:
patent: 2092812 (1937-09-01), Nemzek
patent: 4139011 (1979-02-01), Benoit et al.
patent: 4203446 (1980-05-01), Hofert et al.
patent: 4462405 (1984-07-01), Ehrlich
patent: 4924879 (1990-05-01), O'Brien
patent: 5196025 (1993-03-01), Ranalletta et al.
patent: 5356420 (1994-10-01), Czernecki et al.
patent: 5908434 (1999-06-01), Schraga
patent: 0 694 286 A2 (1996-01-01), None
patent: 61-36607 (1986-03-01), None
Rutynowski Wlodzimierz
Wyszogrodzki Wojciech
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