Adjustment module for medical instrument and medical instrument

Patent metadata

Field	Value
Publication number	US-2026007307-A1
Application number	US-202519196226-A
Country	US
Kind code	A1
Filing date	May 1, 2025
Priority date	Jul 4, 2024
Publication date	Jan 8, 2026
Grant date	—

Abstract

Provided are adjustment module for medical instrument, and medical instrument. The adjustment module includes: operational unit, provided on housing of the medical instrument, where the operational unit can move by first distance under external force; and transmission unit, connected to the operational unit, where the transmission unit includes driving member, fixing member and driven member, the driving member is in transmission connection with the fixing member and the driven member, respectively, the driven member is connected to the working module, the fixing member is fixedly provided on the housing, where the driving member is in transmission connection with the operational unit and is driven by the operational unit to move by second distance along the fixing member, and the driven member can be driven by the driving member to move by third distance that is greater than the first distance and the second distance.

First claim

1 . An adjustment module for a medical instrument, comprising:
an operational unit, provided on a housing of the medical instrument, wherein the operational unit can move by a first distance under an external force; and a transmission unit, connected to the operational unit, wherein the transmission unit comprises a driving member, a fixing member and a driven member, the driving member is in transmission connection with the fixing member and the driven member, respectively, the driven member is connected to a working module, and the fixing member is fixedly provided on the housing, wherein the driving member is in transmission connection with the operational unit and is driven by the operational unit to move by a second distance along the fixing member, and the driven member can be driven by the driving member to move by a third distance, wherein the third distance is greater than both the first distance and the second distance.

2 . The adjustment module for a medical instrument according to claim 1 , wherein the driven member and the fixing member are racks with different lengths, the driven member and the fixing member are parallel and spaced apart from each other, and the driving member is a gear engaged with the racks respectively; and a total length of the fixing member limits an upper limit of the second distance, and a total length of the driven member limits an upper limit of the third distance.

3 . The adjustment module for a medical instrument according to claim 2 , wherein the third distance is at least twice the second distance.

4 . The adjustment module for a medical instrument according to claim 2 , wherein the adjustment module further comprises a support unit and a shaft provided at a centerline of the driving member, one end of the support unit is connected to the operational unit, and the other end is connected to the shaft of the driving member; the operational unit can slide by the first distance in a first direction along the housing; and the driving member rotates around the shaft and moves by the second distance on the fixing member in the first direction.

5 . The adjustment module for a medical instrument according to claim 4 , wherein the support unit comprises a first support and a second support, the first support is sleeved outside the driving member, two ends of the shaft are connected to the first support, and the second support is connected to the first support and the operational unit.

6 . The adjustment module for a medical instrument according to claim 2 , wherein the fixing member and the housing are integrally molded.

7 . The adjustment module for a medical instrument according to claim 1 , wherein the operational unit comprises an operational part and an electric plug, the operational part forms an accommodating cavity communicating with the housing, the electric plug is provided in the accommodating cavity, and the electric plug can move with the operational part and be electrically connected to the transmission unit.

8 . The adjustment module for a medical instrument according to claim 1 , wherein the fixing member is configured to fix one end of the driving member, the driving member and the driven member can synchronously rotate around the fixing member, and the driven member is provided away from the fixing member relative to the driving member; and the driven member is connected to the working module, and the driven member can be driven by the driving member to move by the third distance.

9 . A medical instrument, using the adjustment module according to claim 1 .

10 . The medical instrument according to claim 9 , wherein the medical instrument is a snare, the medical instrument further comprises the housing and the working module, wherein the working module comprises a cable and a ring provided on the housing, a proximal end of the cable is connected to the driven member, thereby enabling the cable to move with the driven member relative to the housing, and a distal end of the cable is connected to the ring.

11 . The medical instrument according to claim 9 , wherein the driven member and the fixing member are racks with different lengths, the driven member and the fixing member are parallel and spaced apart from each other, and the driving member is a gear engaged with the racks respectively; and a total length of the fixing member limits an upper limit of the second distance, and a total length of the driven member limits an upper limit of the third distance.

12 . The medical instrument according to claim 11 , wherein the third distance is at least twice the second distance.

13 . The medical instrument according to claim 11 , wherein the adjustment module further comprises a support unit and a shaft provided at a centerline of the driving member, one end of the support unit is connected to the operational unit, and the other end is connected to the shaft of the driving member; the operational unit can slide by the first distance in a first direction along the housing; and the driving member rotates around the shaft and moves by the second distance on the fixing member in the first direction.

14 . The medical instrument according to claim 13 , wherein the support unit comprises a first support and a second support, the first support is sleeved outside the driving member, two ends of the shaft are connected to the first support, and the second support is connected to the first support and the operational unit.

15 . The medical instrument according to claim 11 , wherein the fixing member and the housing are integrally molded.

16 . The medical instrument according to claim 9 , wherein the operational unit comprises an operational part and an electric plug, the operational part forms an accommodating cavity communicating with the housing, the electric plug is provided in the accommodating cavity, and the electric plug can move with the operational part and be electrically connected to the transmission unit.

17 . The medical instrument according to claim 9 , wherein the fixing member is configured to fix one end of the driving member, the driving member and the driven member can synchronously rotate around the fixing member, and the driven member is provided away from the fixing member relative to the driving member; and the driven member is connected to the working module, and the driven member can be driven by the driving member to move by the third distance.

Assignees

• Micro Tech Nanjing Co Ltd

Inventors

• Wang Qiang
• Tang Zhi
• Zhou Yunfeng
• Fan Mingqiao
• Xie Huan

Classifications

• A61B1/00147

  Holding or positioning arrangements · CPC title

• A61B1/00066

  Proximal part of endoscope body, e.g. handles (A61B1/0052 takes precedence) · CPC title

• A61B1/045 Primary

  Control thereof · CPC title

• A61B2018/00178

  Electrical connectors · CPC title

• A61B2018/141

  Snare · CPC title