US 12,167,857 B2
Clamp device for hemostasis or closure of tissue and medical instrument for hemostasis or closure of tissue
Daniel Kuhn, Düsseldorf (DE)
Assigned to MICRO-TECH (NANJING) CO., LTD., Jiangsu (CN)
Appl. No. 17/599,650
Filed by MICRO-TECH (NANJING) CO., LTD., Jiangsu (CN)
PCT Filed Apr. 17, 2020, PCT No. PCT/CN2020/085337
§ 371(c)(1), (2) Date Sep. 29, 2021,
PCT Pub. No. WO2020/211838, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 19169940 (EP), filed on Apr. 17, 2019; application No. 19169946 (EP), filed on Apr. 17, 2019; and application No. 19185556 (EP), filed on Jul. 10, 2019.
Prior Publication US 2022/0202422 A1, Jun. 30, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/122 (2006.01); A61B 17/128 (2006.01); A61B 17/12 (2006.01)
CPC A61B 17/122 (2013.01) [A61B 17/1285 (2013.01); A61B 2017/12004 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A clamp device for tissue hemostasis or closure, comprising a clamp housing, with a clamp base in a form of a sleeve, and
at least two clamp arms,
wherein the clamp arms are able to be coupled to a distal end of a control wire of a medical device, and wherein the clamp device is actuable to open and close the clamp arms,
wherein the clamp device comprises
exactly two clamp arms, which are provided as separate elements, wherein the clamp arms are coupled or are able to be coupled at their proximal ends to each other, such that the clamp arms are able to be rotated around a common pivot axis, wherein each of the clamp arms is provided with a guide groove and guide grooves of the clamp arms partially overlap each other, and
a guide pin, which is attached to the clamp housing and extends through the guide grooves in overlapping parts of the guide grooves, so that by an engagement of the guide pin and the guide grooves a movement of the pivot axis is translated into a closing movement of the clamp arms or into an opening movement of the clamp arms around the pivot axis,
wherein holding noses are provided on the clamp arms, with the holding noses extending into the guide grooves from a lateral side thereof and being designed in such a way that they allow the guide pin to pass them to reach distal ends of the guide grooves but prevent passing of the guide pin in an opposite direction.