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US 5,611,810 AGranted
Hair transplantation apparatus
AssigneeJames E. Arnold
InventorsJames E. Arnold, Douglas E. Dority
Life of this patent
Estimating the term…
Abstract
In one aspect, the invention provides a surgical handle assembly including an elongate cylindrical sheath having a proximal end, a distal end, and a central lumen therebetween. A chuck member is slidable within the sheath lumen, with the chuck member having a proximal end and a distal end. The proximal end is threaded, and a set of at least two prongs are disposed at the distal end. A threaded end element is provided for mating with the proximal threaded end of the chuck member such that rotation of the end element relative to the chuck member proximally translates the chuck member within the lumen to translate the prongs toward each other as the prongs engage the distal end of the cylindrical shaft.
Claims7
A surgical cutter assembly, comprising:
- an elongate cylindrical sheath having a proximal end, a distal end, and a central lumen therebetween;
- a chuck member slidable within the sheath lumen, the chuck member having a proximal end and a distal end, wherein the proximal end of the chuck is threaded, and wherein a set of at least two prongs are disposed at the distal end of the chuck;
- a threaded end element for mating with the proximal threaded end of the chuck member, wherein rotation of the end element relative to the chuck member while the distal end of the chuck is engaged with the distal end of the sheath proximally translates the chuck member within the lumen to translate the prongs toward each other;
- and
- an elongate shaft having a proximal end and a sharpened distal end which forms a blade for making incisions into a patient's skin, wherein the blade is spear-shaped and has a maximum length that is less than 1.8 mm, and wherein the proximal end of the shaft is received in the prongs of the chuck member.
2 more elements
A surgical cutter assembly, comprising:
- an elongate cylindrical sheath having a proximal end, a distal end, and a central lumen therebetween;
- a chuck member slidable within the sheath lumen, the chuck member having a proximal end and a distal end, wherein the proximal end of the chuck is threaded, and wherein a set of at least two prongs are disposed at the distal end;
- and
- a threaded end element for mating with the proximal threaded end of the chuck member, wherein rotation of the end element relative to the chuck member while the distal end of the chuck is engaged with the distal end of the sheath proximally translates the chuck member within the lumen to translate the prongs toward each other;
- and
- an elongate shaft having a proximal end and a distal end, wherein a spear-shaped blade is on the distal end of the shaft, wherein the blade has a maximum length that is less than 1.8 mm, and wherein the proximal end of the shaft is received in the prongs of the chuck member.
3 more elements
A surgical cutter assembly, comprising:
- an elongate cylindrical sheath having a proximal end, a distal end, and a central lumen therebetween;
- a chuck member slidable within the sheath lumen, the chuck member having a proximal end and a distal end, wherein the proximal end of the chuck is threaded, and wherein a set of at least two prongs are disposed at the distal end of the chuck;
- and
- a threaded end element for mating with the proximal threaded end of the chuck member, wherein rotation of the end element relative to the chuck member while the distal end of the chuck is engaged with the distal end of the sheath proximally translates the chuck member within the lumen to translate the prongs toward each other;
- and
- an elongate cylindrical shaft having a proximal end, a distal end, and an axial lumen, the shaft having blade on its distal end, wherein the blade has a diameter that is less than 2 mm, and wherein the proximal end of the shaft is received in the prongs of the chuck member.
3 more elements
A surgical cutter assembly, comprising:
- an elongate cylindrical sheath having a proximal end, a distal end, and a central lumen therebetween;
- a chuck member slidable within the sheath lumen, the chuck member having a proximal end and a distal end, wherein the proximal end of the chuck is threaded, and wherein a set of at least two prongs are disposed at the distal end of the shaft;
- a threaded end element for mating with the proximal threaded end of the chuck member, wherein rotation of the end element relative to the chuck member while the distal end of the chuck is engaged with the distal end of the sheath proximally translates the chuck member within the lumen to translate the prongs toward each other;
- and
- an elongate shaft having a proximal end and a sharpened distal end which forms a blade for making incisions into a patient's skin, wherein the shaft is cylindrical and has an axial lumen, wherein the blade has a diameter that is less than 2 mm, and wherein the proximal end of the shaft is received in the prongs of the chuck member.
2 more elements
Dependencies are inferred from the claim text.