SURGICAL FORCEPS, IN PARTICULAR AN OPHTHALMOLOGIC MICROSURGICAL FORCEPS
The invention relates to a surgical forceps, in particular an opthalmologic microsurgical forceps. The invention includes a gripping part moulded in one piece from a plastic material. The gripping part has two arms connected to one another at one end thereof. There is a clamping part formed by metal tips inserted into the distal ends of the arms during the moulding of the gripping part. The distal part of the forceps is equipped with centering devices having a cylindrical finger solidly connected to one of the branches of the forceps and oriented towards the other branch. The centering devices also have a transfixing hole provided in the other branch opposite the finger. According to the invention, the centering devices are provided in the end portions of the plastic arms, in which the proximal portions of the metal tips are inserted.
1 . Opthalmologic microsurgical forceps, for single use, comprising:
a prehension part moulded in one piece of plastic material and being comprised of two arms, connected to each other by one end thereof and forming a proximal end; and
a pinching part being comprised of metallic tips inserted, during moulding of said prehension part, into a distal part of said two arms, forming two branches, said distal part being equipped with centering devices, each centering device comprising a male part formed by a stud of cylindrical shape integral to one of the branches and oriented towards the other branch, and a female part formed by a transfixing orifice made in said other branch, opposite said male part, said centering devices being provided in said ends said two arms at the proximal portions where the metallic pinching tips are inserted, said transfixing orifice crossing said plastic material and a part of the metallic tip mounted into said plastic material.
2 . Opthalmologic microsurgical forceps, for single use, as per claim 1 , wherein said transfixing orifice has an oblong shape and a longitudinal axis parallel to an axis of the arm provided with said transfixing orifice.
3 . Opthalmologic microsurgical forceps, for single use, as per claim 1 , further comprising:
precentering devices comprising: a male part formed by a peg integral with one of the branches and oriented towards the other branch, and a female part being comprised of a transfixing orifice presented on the other branch, opposite said male part, said precentering devices being located at a distance from said centering devices in a direction of the proximal end.
4 . Opthalmologic microsurgical forceps, for single use, as per claim 3 , wherein male and female elements of said centering devices and said precentering devices are inverted.
5 . Opthalmologic microsurgical forceps, for single use, as per claim 3 , wherein said peg and said transfixing orifice have an oblong shape and a longitudinal axis oriented perpendicular to axes of the arms equipped with said peg and said transfixing orifice, respectively.
6 . Opthalmologic microsurgical forceps, for single use, as per claim 3 , wherein said peg and said transfixing orifice have larger volumes than the centering pivot and orifice, respectively.
7 . Opthalmologic microsurgical forceps, for single use, as per claim 1 , wherein at least one of the plastic arms has an internal face equipped, at least in an area of prehension or of digital pressure of the arms, with one or several stops oriented in a direction of said internal face of the other arm.
8 . Opthalmologic microsurgical forceps, for single use, as per claim 7 , wherein said internal face of each plastic arm is equipped with spaced cooperating stops situated opposite each other, between the precentering devices and joint ends of said arms.
9 . Opthalmologic microsurgical forceps, for single use, as per claim 7 , wherein the centering finger and/or the precentering stud have a circular shoulder at a base thereof, the centering and/or precentering orifices being flanged by a collar, the shoulders and the collars coming into contact with each other in a pinching position, forming stops during contraction of the branches.
10 . Opthalmologic microsurgical forceps, for single use, as per claim 7 , wherein the stops are distributed over a length of the prehension area, restricting joining movement of the arms.