US 2025/0143706 A1Published application

Intelligent anvil for circular surgical stapler

AssigneeCilag GmbH International

InventorsDevanathan Raghavan, John K. Bruce, Chad P. Boudreaux

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Abstract

A surgical instrument includes a body assembly, a shaft assembly, a stapling head assembly disposed at a distal end of the shaft assembly, and an anvil. The stapling head assembly having a deck member and a closure shaft capable of moving relative to the deck member. The anvil including a head, a shank, a biasing body, and a electronic unit having a distance sensor. The head and the shank being capable of moving relative to each other. The biasing body being interposed between the head and the shank with a known spring constant. The distance sensor being capable of measuring a relative distance between the shank and the head, while the electronic unit can communicate a parameter associated with the relative distance to a console.

Claims20

Dependent claims

A surgical stapler comprising:

(a) a body;
(b) a shaft that extends distally from the body;
(c) a stapling head disposed at a distal end of the shaft, wherein the stapling head is operable to drive a plurality of staples into tissue, wherein the stapling head comprises a closure shaft and a deck, wherein the closure shaft is selectively movable longitudinally relative to the deck;
and
(d) an anvil comprising:
(i) a head comprising a proximally presented surface defining a plurality of staple forming pockets configured to form staples, wherein the proximally presented surface and the deck of the stapling head are configured to cooperatively grasp tissue;
(ii) a shank extending proximally from the head, the shank configured to selectively couple with the closure shaft,
(iii) a biasing body having a known spring constant, wherein the biasing body is interposed between the shank and the head such that the shank and the head are configured to move relative to each other, and
(iv) an electronic unit comprising a distance sensor configured to measure a relative distance between the shank and the head, wherein the electronic unit is configured to communicate a parameter associated with the relative distance to a console, wherein the electronic unit comprises a control unit, wherein the control unit stores the known spring constant of the biasing body, wherein the control unit is configured to receive signals from the distance sensor indicative of the measured relative distance.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/500,525Filed 2 Nov 2023
Published: 8 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

A61B 17/1155
Staplers for performing anastomosis, e.g. in a single operation: circular staplers comprising a plurality of staples
A61B 90/08
Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00,…
A61B 90/30
Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00,…
A61B 90/361
Image-producing devices or illumination devices not otherwise provided for: image-producing devices, e.g. surgical cameras

Family

US 12,364,481 B2Related patent
US 2025/0143706 A1This patent

From the US filing history. Foreign family members aren’t listed.

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