Device for inserting a surgical pin
AssigneeJohnson & Johnson Professional, Inc.
InventorJames R. Stead
Life of this patent
Estimating the term…
Abstract
An insertion device for a surgical pin includes a body defining a bore therein and a retainer disposed in the bore for frictionally engaging a portion of the surgical pin. The bore includes an aperture defining an entry into the bore, a surface for limiting the depth of insertion of the surgical pin, a wall surface extending from the insertion limiting surface, and a recess in the wall surface disposed between the aperture and the insertion limiting surface. In an exemplary embodiment, the retainer is an O-ring disposed within the recess. The O-ring defines a resilient aperture having a diameter less than that of the pin.
Claims22
A device for inserting a surgical pin into solid bone, comprising:
- a substantially linear, axially elongated body having a first end defining a bore effective to receive an end of the pin and a second end opposite the first end, the second end defining an outwardly facing impact surface for receiving a force to drive the pin into the solid bone, the bore including
- a surgical pin insertion limitation surface effective to transfer the impact force from the device to the pin,
- a wall portion extending from the surgical pin insertion limitation surface, and
- a first aperture defining an entry into the bore;
- and
- a retainer disposed within the bore effective to provide automatic releasable engagement of the pin in the bore, such that the device is removable from the pin while the pin remains secured in the solid bone.
A device for inserting a Steinman pin, comprising:
- a handle portion including a pin receiving end and an impact end opposite the pin receiving end, the impact end defining an outwardly facing impact surface for receiving an impact force and the pin receiving end defining a bore having an inner surface terminating in an insertion limitation surface for transferring the impact force from the device to the pin, the inner surface including a first portion having a first diameter and extending from the insertion limitation surface and a second portion extending to an aperture defining an entry into the bore, and a channel circumscribed within the inner surface of the bore between the first and second portions of the inner surface;
- and
- an O-ring disposed at least partially in the channel for providing automatic releasable engagement of the pin in the bore.
A device for inserting a surgical pin into solid bone, comprising:
- a body portion having a pin receiving end defining a bore and an outwardly facing impact end opposite the pin receiving end for receiving an impact force, the bore including
- a surgical pin insertion limitation surface for transferring the impact force to the pin,
- a wall portion extending from the surgical pin insertion limitation surface,
- a first aperture defining an entry into the bore,
- a frusto-conical lip defining the aperture, and
- a recess within the wall portion located at a point between the surgical pin insertion limitation surface and the first aperture,
- wherein the wall portion includes a first portion and a second portion having the recess therebetween, the first portion being proximate the first aperture and defining a first cross sectional area of the bore greater than a second cross sectional area defined by the second portion;
- and
- a retainer disposed within the recess for automatically releasably engaging an end of the pin inserted in the bore.
A device for inserting a surgical pin, the pin having an elongate portion and a head portion, wherein the device comprises:
- a handle portion including a pin receiving end and an impact end opposite the pin receiving end for receiving an impact force thereon, the pin receiving end defining a bore having an inner surface including a first portion having a first diameter and terminating in an insertion limitation surface effective to transfer the impact force to the pin and a second portion extending to an aperture which defines an entry into the bore, and a recess disposed in the inner surface of the bore between the first and second portions of the inner surface;
- and
- an O-ring disposed at least partially in the recess;
- wherein the head portion of the pin is insertable within the bore and frictionally engaged by the O-ring and the elongate portion of the pin rigidly protrudes from the device.
Dependencies are inferred from the claim text.