End tool for surgical instrument and method of manufacturing the same
AssigneeLivsmed Inc.
InventorsJung Joo Lee, Heejin Kim, Dongkyu JANG, Donghoon KANG
Life of this patent
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Abstract
Provided are an end tool of a surgical instrument and a method of manufacturing the same, and more particularly, an end tool of a surgical instrument that may be manually operated to be used in laparoscopic surgery or other various surgery and a method of manufacturing the end tool, wherein a load applied to a pin (rotary shaft) and the pulley is appropriately distributed such that the pulley may be sufficiently rotated and at the same time, an overall durability may be improved.
Claims26
An end tool of a surgical instrument, the end tool comprising:
- at least one jaw formed to be rotatable;
- an end tool hub in which a first shaft that is a rotating center of the at least one jaw is coupled;
- a pitch hub axially coupled to the end tool hub and provided to be rotatable with respect to the end tool hub;
- and
- at least one pin assembly coupled to the pitch hub and formed to be rotatable in the pitch hub,
- wherein the pin assembly comprises:
- a pulley formed in a loop shape and having a hollow portion formed therein;
- a plurality of balls arranged in the hollow portion of the pulley and formed to be in direct contact with an inner circumferential surface of the pulley;
- and
- a pin inserted among the plurality of balls to be in direct contact with the plurality of balls, and performing as a rotary shaft of the pulley.
(canceled)
14-15. (canceled)
A method of manufacturing an end tool for a surgical instrument, the method comprising:
- arranging a first outer pulley;
- arranging a plurality of balls in the first outer pulley;
- inserting a first replacement pin among the plurality of balls;
- fitting a first inner pulley onto the first replacement pin;
- fitting a second inner pulley onto the first replacement pin;
- arranging a second outer pulley;
- arranging a plurality of balls in the second outer pulley;
- inserting a second replacement pin among the plurality of balls;
- forming a pin assembly by transferring and fitting the second outer pulley and the plurality of balls, through which the second replacement pin passes, onto the first replacement pin;
- inserting the first outer pulley, the first inner pulley, the second inner pulley, and the second outer pulley, through which the first replacement pin passes, entirely into a pitch hub;
- and
- replacing the first replacement pin with a pin,
- wherein the plurality of balls are formed to be in direct contact with an inner circumferential surface of the pulley, and
- the pin is formed to be in direct contact with the plurality of balls.
An end tool of a surgical instrument, the end tool comprising:
- at least one jaw formed to be rotatable;
- an end tool hub in which a first shaft that is a rotating center of the at least one jaw is coupled;
- a pitch hub axially coupled to the end tool hub and provided to be rotatable with respect to the end tool hub;
- and
- at least one pin assembly coupled to the pitch hub and formed to be rotatable in the pitch hub,
- wherein the pin assembly comprises:
- a pulley formed in a loop shape and having a hollow portion formed therein;
- a plurality of rollers arranged in the hollow portion of the pulley and formed to be in direct contact with an inner circumferential surface of the pulley;
- and
- a pin inserted among the plurality of rollers to be in direct contact with the plurality of rollers, and performing as a rotary shaft of the pulley.
Dependencies are inferred from the claim text.