IP Library › Granted Patent US 12,622,699
Granted Patent B2
US 12,622,699 · App. 18/435,252 · Granted May 12, 2026

Handheld electromechanical surgical device including load sensor having spherical ball pivots

Inventor: Anthony Sgroi (Southbury, CT)
Assignee: Covidien LP
A61B17/1155A61B17/3403A61B2017/0046A61B2017/3407A61B2017/3409A61B2562/0252
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Quick Facts
Patent No.
US 12,622,699
App. No.
18/435,252
Granted
May 12, 2026
Kind
B2
Abstract

A force sensor arrangement for use in a surgical device includes a support block supported within the surgical device and defining a support block surface; a load sensor disposed axially adjacent the support block, the load sensor defining a sensor surface; and a spherical disc interposed between the support block and the load sensor, and in contact with the support block surface and the sensor surface, wherein the spherical disc defines a first side in contact with the sensor surface, and a second side in contact with the support block surface, wherein the second side of the spherical disc has a spherical profile and the support block surface has a complimentary spherical profile.

Claims (25)

1 . A force sensor arrangement for use in a surgical device, the force sensor arrangement comprising:

a support block supported within the surgical device and defining a support block surface;

a load sensor disposed axially adjacent the support block, the load sensor defining a sensor surface; and

a spherical disc interposed between the support block and the load sensor, and in contact with the support block surface and the sensor surface, wherein the spherical disc defines a first side in contact with the sensor surface, and a second side in contact with the support block surface, wherein the second side of the spherical disc has a spherical profile and the support block surface has a complimentary spherical profile.

2 . The force sensor arrangement according to claim 1 , wherein the spherical disc of the force sensor arrangement accommodates for variations in manufacturing tolerances of the support block and the load sensor.

3 . The force sensor arrangement according to claim 2 , wherein the spherical disc of the force sensor arrangement accommodates for variations in manufacturing tolerances in any direction.

4 . The force sensor arrangement according to claim 3 , wherein the first side of the spherical disc is planar, and the sensor surface in contact therewith is planar.

5 . The force sensor arrangement according to claim 4 , wherein the load sensor is disposed distal of the support block.

6 . The force sensor arrangement according to claim 3 , wherein the spherical disc is a double spherical disc having a first side that is spherical, and wherein the support block surface defines a complimentary spherical surface.

7 . The force sensor arrangement according to claim 1 , wherein the force sensor arrangement senses axial translation of a trocar member of the surgical device.

8 . A force sensor arrangement for use in a surgical device, the force sensor arrangement comprising:

a support block supported within the surgical device and defining a support block surface having a support geometric profile;

a load sensor disposed axially adjacent the support block, the load sensor defining a sensor surface having a sensor geometric profile; and

a disc interposed between the support block and the load sensor, and in contact with the support block surface and the sensor surface, wherein the disc defines a first side in contact with the sensor surface and having a first geometric profile, and a second side in contact with the support block surface and having a second geometric profile;

wherein at least one of the first geometric profile or the second geometric profile is complementary to the corresponding at least one of the support geometric profile or the sensor geometric profile;

wherein the first geometric profile and the second geometric profile include a spherical surface.

9 . A force sensor arrangement for use in a surgical device, the force sensor arrangement comprising:

a support block defining a support block surface and a support block passage having a longitudinal axis;

a load sensor disposed axially adjacent the support block, the load sensor defining a sensor surface and a load sensor passage extending along the longitudinal axis; and

a spherical disc interposed between the support block and the load sensor, and in contact with the support block surface and the sensor surface, wherein the spherical disc defines a first side in abutting contact with the sensor surface, and a second side in abutting contact with the support block surface, wherein the second side of the spherical disc has a spherical profile and the support block surface has a complimentary spherical profile whereby the spherical disc is free to pivot relative to the longitudinal axis to maintain the support block and the load sensor in force transmitting alignment with one another, and wherein the spherical disc defines a spherical disc passage extending along the longitudinal axis.

10 . The force sensor arrangement according to claim 9 , wherein the spherical disc accommodates for variations in manufacturing tolerances of the support block and the load sensor.

11 . The force sensor arrangement according to claim 10 , wherein the spherical disc accommodates for variations in manufacturing tolerances in any direction.

12 . The force sensor arrangement according to claim 11 , wherein the first side of the spherical disc is planar, and the sensor surface in contact with the first side of the spherical disc is planar.

13 . The force sensor arrangement according to claim 12 , wherein the load sensor is disposed distal of the support block.

14 . The force sensor arrangement according to claim 11 , wherein the spherical disc is a double spherical disc having the first side that is spherical, and wherein the support block surface defines a complimentary spherical surface.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 7, 2024
From: SGROI, ANTHONY
To: COVIDIEN LP
Reel/Frame 066407/0731 →
Continuity (4)
Continuation 17143277 · Jan 7, 2021
Continuation In Part 15972606 · May 7, 2018
Provisional Application 62957958 · Jan 7, 2020
Related Publication 20240164782A1 · May 23, 2024
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