Articulation mechanisms for robotic surgical tools
US-2024252025-A1 · Aug 1, 2024 · US
US11460092B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11460092-B2 |
| Application number | US-201916575667-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 19, 2019 |
| Priority date | Sep 20, 2018 |
| Publication date | Oct 4, 2022 |
| Grant date | Oct 4, 2022 |
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Bolt type angular gear mechanism ( 1 ) for transmitting a rotational movement from a first shaft to a second shaft which is orientated at an angle with respect to the first shaft, comprising a plurality of angular bolts ( 31, 32 ) each having two members, a first bolt carrier ( 21 ) which can be rotated about a first axis and which has receiving members ( 4 ) for the first members of the angular bolts ( 31, 32 ) in each case, a second bolt carrier ( 22 ) which can be rotated about a second axis and which has receiving members ( 4 ) for the second members of the angular bolts ( 31, 32 ) in each case so that the bolt carriers ( 21, 22 ) are connected by means of the angular bolts ( 31, 32 ), wherein the axes define an angle, and wherein the members of the angular bolts ( 31, 32 ) are each constructed in a cylindrical manner as far as a plane of the angle bisector between the axes.
Opening claim text (preview).
The invention claimed is: 1. Bolt type angular gear mechanism for transmitting a rotational movement from a first shaft to a second shaft which is orientated at an angle with respect to the first shaft, comprising: a plurality of angular bolts each having two members, a first bolt carrier which can be rotated about a first axis and which has receiving members for the first members of the angular bolts in each case, a second bolt carrier which can be rotated about a second axis and which has receiving members for the second members of the angular bolts in each case so that the bolt carriers are connected by means of the angular bolts, wherein the axes define an angle, wherein the receiving members are arranged in the bolt carriers with angular spacings with respect to each other, wherein at least two of the angular spacings are different, wherein the receiving members of the angular bolts which are located on a first bolt carrier and which are spaced apart with a first angular spacing are located opposite the receiving members of the angular bolts on a second bolt carrier which are spaced apart with a second angular spacing which is different from the first angular spacing or at least a part of the angular bolts comprise an angular offset. 2. Bolt type angular gear mechanism according to claim 1 , wherein the members of the angular bolts are each constructed in a cylindrical manner as far as a plane of the angle bisector between the axes. 3. Bolt type angular gear mechanism according to claim 1 , wherein the receiving members of the bolt carriers are arranged in each of the bolt carriers on at least two reference circles with different radii. 4. Bolt type angular gear mechanism according to claim 1 , wherein the bolt carriers each form an at least partially conical front side with a conical face, wherein all the receiving members for the angular bolts are in each case located at least partially or completely inside the conical face. 5. Bolt type angular gear mechanism according to claim 1 , wherein the angle of inclination of the conical faces corresponds in each case at least substantially to half of the angle between the bolt carriers. 6. Bolt type angular gear mechanism according to claim 1 , wherein the receiving members of at least one of the bolt carriers which are located on a reference circle are arranged with at least two alternating angular spacings. 7. Bolt type angular gear mechanism according to claim 1 , wherein two receiving members of the first bolt carrier which are spaced apart with a first angular spacing are connected to two receiving members of the second bolt carrier by means of two angular bolts, wherein the receiving members of the second bolt carrier are spaced with a second angular spacing which is different from the first angular spacing. 8. Bolt type angular gear mechanism according to claim 1 , wherein the inner angular bolts which are located on an inner reference circle of the reference circles have a larger diameter or a smaller diameter than the outer angular bolts of an outer reference circle of the reference circles. 9. Bolt type angular gear mechanism according to claim 1 , wherein the single reference circle or all the reference circles in total has/have at least six and/or a maximum of 20 angular bolts. 10. Bolt type angular gear mechanism according to claim 1 , wherein the bolt carriers each have a central hole which is constructed as a through-hole. 11. Bolt type angular gear mechanism according to claim 1 , wherein the angular bolts are produced by means of: producing two members with miters, which are at least substantially 45°, and joining the members at least substantially at 90°. 12. Use of a bolt type angular gear mechanism according to claim 1 for transmitting a torque from a first shaft to a second shaft, wherein the axes of the shafts define an angle. 13. Bolt type angular gear mechanism for transmitting a rotational movement from a first shaft to a second shaft which is orientated at an angle with respect to the first shaft, comprising: a plurality of angular bolts each having two members, a first bolt carrier which can be rotated about a first axis and which has receiving members for the first members of the angular bolts in each case, a second bolt carrier which can be rotated about a second axis and which has receiving members for the second members of the angular bolts in each case so that the bolt carriers are connected by means of the angular bolts, wherein the axes define an angle, wherein the receiving members are arranged in the bolt carriers with angular spacings with respect to each other, wherein at least two of the angular spacings are different, and wherein the bolt carriers each form an at least partially conical front side with a conical face, wherein all the receiving members for the angular bolts are in each case located at least partially or completely inside the conical face. 14. Bolt type angular gear mechanism according to claim 13 , wherein the members of the angular bolts are each constructed in a cylindrical manner as far as a plane of the angle bisector between the axes. 15. Bolt type angular gear mechanism according to claim 13 , wherein the receiving members of the bolt carriers are arranged in each of the bolt carriers on at least two reference circles with different radii. 16. Bolt type angular gear mechanism according to claim 13 , wherein the angle of inclination of the conical faces corresponds in each case at least substantially to half of the angle between the bolt carriers. 17. Bolt type angular gear mechanism according to claim 13 , wherein the receiving members of at least one of the bolt carriers which are located on a reference circle are arranged with at least two alternating angular spacings. 18. Bolt type angular gear mechanism according to claim 13 , wherein two receiving members of the first bolt carrier which are spaced apart with a first angular spacing are connected to two receiving members of the second bolt carrier by means of two angular bolts, wherein the receiving members of the second bolt carrier are spaced with a second angular spacing which is different from the first angular spacing. 19. Bolt type angular gear mechanism according to claim 13 , wherein the inner angular bolts which are located on an inner reference circle of the reference circles have a larger diameter or a smaller diameter than the outer angular bolts of an outer reference circle of the reference circles. 20. Bolt type angular gear mechanism according to claim 13 , wherein the bolt carriers each have a central hole which is constructed as a through-hole.
Screw mechanisms (with automatic reversal F16H25/12) · CPC title
Couplings for intersecting shafts, provided with intermediate bars bent in an angle corresponding with the angle of intersection · CPC title
Elements essential to such mechanisms, e.g. screws, nuts (F16H25/22 takes precedence) · CPC title
with non-parallel axes (F16H1/22 takes precedence) · CPC title
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