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Surgical Device with Overload Mechanism
| Content Provider | The Lens |
|---|---|
| Description | L'invention concerne des dispositifs chirurgicaux et des méthodes pour faire fonctionner des dispositifs chirurgicaux pendant une intervention chirurgicale. Dans un mode de réalisation à titre d'exemple, l'invention concerne un dispositif chirurgical ayant un boîtier de poignée avec une tige allongée, un effecteur d'extrémité sur l'extrémité distale de la tige allongée, un ensemble d'entraînement, et un déclencheur couplé au boîtier de poignée. Divers mécanismes de surcharge sont prévus pour transférer une force de fermeture de la gâchette à l'ensemble d'entraînement à moins que la force de fermeture ne dépasse une force seuil prédéterminée auquel cas le mécanisme de surcharge empêche le transfert de la force de fermeture à l'ensemble d'entraînement. |
| Abstract | Surgical devices and methods for operating surgical devices during a surgical procedure are provided. In one exemplary embodiment, a surgical device is provided having a handle housing with an elongate shaft, an end effector on the distal end of the elongate shaft, a drive assembly, and a trigger coupled to the handle housing. Various overload mechanisms are provided for transferring a closing force from the trigger to the drive assembly unless the closing force exceeds a predetermined threshold force in which case the overload mechanism prevents transfer of the closing force to the drive assembly. |
| Related Links | https://www.lens.org/lens/patent/010-579-431-886-463/frontpage |
| Language | English |
| Publisher Date | 2019-02-14 |
| Access Restriction | Open |
| Alternative Title | Dispositif Chirurgical Avec Mécanisme De Surcharge |
| Content Type | Text |
| Resource Type | Patent |
| Date Applied | 2018-08-07 |
| Agent | Shirtz, Joseph F. Et Al. |
| Applicant | Ethicon Llc |
| Application No. | 2018055951 |
| Claim | What is claimed is: A surgical device, comprising: a handle housing having an elongate shaft extending distally therefrom; an end effector at the distal end of the elongate shaft; a drive assembly configured to actuate the end effector; a trigger coupled to the handle housing and pivotable about a trigger pivot axis from an unactuated position to an actuated position; a pivot linkage having a first end coupled to a drive assembly and a second end, the pivot linkage being pivotable about the trigger pivot axis; and an overload member coupled at least between the second end of the pivot linkage and the trigger; wherein pivotal movement of the trigger about the trigger pivot axis from the unactuated position to the actuated position transfers a closing force through the overload member to the second end of the pivot linkage thereby causing the pivot linkage to pivot about the trigger pivot axis such that the first end of the pivot linkage distally advances the drive assembly to cause actuation of the end effector, and wherein, when the closing force exceeds a predetermined threshold force, pivotal movement of the trigger about the trigger pivot axis from the unactuated position to the actuated position transfers the closing force to the overload member to cause the overload member to move in a manner that prevents transfer of the closing force to the pivot linkage such that the pivot linkage remains stationary relative to the handle housing. The device of claim 1 , wherein the overload member comprises an overload linkage and a biasing element, wherein the biasing element biases the overload linkage to a first position when the trigger pivots about the trigger pivot axis from the unactuated position to the actuated position until the closing force exceeds the predetermined threshold force. The device of claim 2, wherein, when the closing force exceeds the predetermined threshold force, the closing force overcomes a biasing force of the biasing element to allow the overload member to move from the first position to a second position, thereby preventing further movement of the pivot linkage relative to the handle housing. The device of claim 2, wherein, when the closing force exceeds the predetermined threshold force, the biasing element compresses to thereby cause at least one of deflection of the overload member and reduction of a length of the overload member. The device of claim 2, wherein the overload linkage has first and second ends, the second end of the overload linkage being slidably disposed within the trigger. The device of claim 5, wherein the biasing element is housed within the trigger and, when the closing force exceeds the predetermined threshold force, the second end of the overload linkage slides within the trigger to compress the biasing element such that the pivotal linkage remains stationary relative to the handle housing. The device of claim 2, wherein the biasing element is positioned about an outer surface of the overload linkage such that, when the closing force exceeds the predetermined threshold force, the biasing element compresses to prevent further movement of the pivot linkage relative to the handle housing. The device of claim 7, wherein compression of the biasing element decreases a length of the overload member. The device of claim 2, wherein the pivot linkage includes a first portion and a second portion, and the biasing element is a deflectable region of the second portion of the pivot member and wherein, when the closing force exceeds the predetermined threshold force, the biasing element deforms to prevent further pivotal movement of the pivot linkage relative to the handle housing. The device of claim 9, wherein the first portion is less flexible than the second portion of the pivot linkage. a handle housing having a trigger pivotally coupled thereto; an elongate shaft extending distally from the handle housing, the elongate shaft having an end effector at a distal end thereof; a drive assembly that is movable to actuate the end effector; a linkage assembly coupled between the trigger and the drive assembly, the linkage assembly including a pivot member and an overload shaft coupled to one another, the pivot member being coupled to the drive assembly and the overload shaft being coupled to the trigger, the linkage assembly being configured to transfer a driving force from the trigger, through the overload shaft to the pivot member to move the drive assembly and thereby actuate the end effector, and the linkage assembly being configured to cause the overload shaft to move while the pivot member remains stationary relative to the handle housing when the driving force exceeds a predetenriined threshold force. The device of claim 11, wherein the overload shaft is operably connected to a biasing element, and wherein the biasing element biases the overload shaft to a first position until the driving force exceeds the predetermined threshold force. The device of claim 12, wherein, when the driving force exceeds the predetermined threshold force, the driving force causes the biasing element to move to allow the overload shaft to move from a first position to a second position, thereby preventing ftirther movement of the pivot member relative to the handle housing. The device of claim 12, wherein the biasing element is disposed within the trigger, the biasing element having first and second ends and the first end of the biasing element contacting an end of the overload shaft. The device of claim 12, wherein the biasing element is positioned about an outer surface of the overload shaft. The device of claim 12, wherein the pivot member has a proximal portion that is coupled to the drive assembly and a distal portion that is coupled to the overload shaft, and the biasing element is a deflectable region of the distal portion of the of the pivot member. The device of claim 16, wherein the proximal portion of the pivot member is less flexible than the distal portion of the pivot member. A method of operating a surgical device, comprising: manipulating an end effector on a distal end of an elongate shaft of a surgical device to position the end effector about tissue; and actuating a trigger on the surgical device to transfer a force from the trigger through an overload member to a pivot member to actuate a drive assembly that moves the end effector, the overload member moving relative to the handle housing when the force exceeds a predetermined threshold force to thereby prevent the force from being transferred to at least a portion of the pivot member. The method of claim 18, wherein, when the force exceeds the predetermined threshold, the overload member moves to prevent the force from being transferred to the pivot member. The method of claim 18, wherein the overload member comprises an overload linkage coupled to a deflectable region of the pivot member, and when the force exceeds the predetermined threshold force, the overload linkage moves thereby deforming the pivot member at the deflectable region. |
| CPC Classification | Diagnosis; Surgery; Identification |
| Extended Family | 156-862-540-075-246 065-514-316-200-25X 016-933-727-531-263 192-286-882-561-124 157-119-863-259-774 081-614-028-822-36X 010-579-431-886-463 057-834-694-893-594 048-516-825-227-939 043-058-947-797-713 124-097-174-038-86X |
| Patent ID | 2019030676 |
| Inventor/Author | Stokes Michael J Baxter Iii Deupree David A Scott Gregory G Labhasetwar Disha V |
| IPC | A61B17/128 A61B17/072 A61B17/29 A61B90/00 |
| Status | Pending |
| Simple Family | 043-058-947-797-713 065-514-316-200-25X 016-933-727-531-263 192-286-882-561-124 157-119-863-259-774 124-097-174-038-86X 010-579-431-886-463 057-834-694-893-594 081-614-028-822-36X 048-516-825-227-939 156-862-540-075-246 |
| CPC (with Group) | A61B17/07207 A61B17/1285 A61B90/03 A61B2017/2912 A61B2090/032 A61B2090/034 A61B17/10 A61B2017/00367 A61B2017/2919 |
| Issuing Authority | United States Patent and Trademark Office (USPTO) |
| Kind | Patent Application Publication |
