CN-115281819-B - Transmission handle for controlling annular dielectric mapping catheter

CN115281819BCN 115281819 BCN115281819 BCN 115281819BCN-115281819-B

Abstract

The invention discloses a transmission handle for controlling an annular dielectric mapping catheter, which is arranged on a mechanical arm and controlled by the mechanical arm, and comprises a rotary control component, a traction wire fixing cylinder, a fixing part and a hand-held part, the transmission handle designed by the invention can realize the precise control of the two-way bending, front and back pushing and axial rotation of the catheter, thereby realizing the precise control of the head end of the catheter under the guidance of the three-dimensional mapping system, reducing the operation difficulty and improving the operation quality and efficiency.

Inventors

CHEN YUEMENG
ZHANG XINLONG
Ge Dayang

Assignees

绍兴梅奥心磁医疗科技有限公司

Dates

Publication Date: 20260505
Application Date: 20220606

Claims (7)

1. The transmission handle is characterized by being arranged on a mechanical arm, and comprises a rotation control component, a traction wire transmission cylinder, a fixing part and a handheld part, wherein the catheter enters from the head of the traction wire transmission cylinder and is connected with a signal wire at the tail end of the traction wire transmission cylinder, the rotation control component is fixed on one side of the head of the traction wire transmission cylinder, the fixing part is arranged on the catheter at the tail end of the traction wire transmission cylinder, and the handheld part is sleeved on the periphery of the traction wire transmission cylinder for grasping; A first traction wire and a second traction wire are symmetrically embedded in the catheter, wherein the first end of the first traction wire and the first end of the second traction wire are arranged at the preset position of the head of the catheter, and the second end of the first traction wire and the second end of the second traction wire are connected with the tail end of the traction wire transmission cylinder; Based on the control of the mechanical arm, under the cooperation of the rotary control assembly and the traction wire transmission cylinder, the first traction wire or the second traction wire is pulled by the rotary control assembly so as to realize the bidirectional bending of the head end of the catheter, and the axial rotation of the catheter is realized by controlling the rotary control assembly, so that the target mapping treatment is finally realized; the rotary control assembly comprises a first bevel gear and a second bevel gear; the first bevel gear is arranged at the head part of the traction wire transmission cylinder, and the first bevel gear and the second bevel gear synchronously rotate to drive the guide pipe to axially rotate; The second bevel gear is rotatably connected with the first bevel gear and rotates to drive the first traction wire or the second traction wire so as to realize bidirectional bending of the catheter head end; the tail end of the traction wire transmission cylinder is provided with a first connecting hole and a second connecting hole, the first traction wire is fixed on the first connecting hole, and the second traction wire bypasses the turning pulley on the fixing part to be fixed on the second connecting hole, so that the rotation of the second bevel gear to different directions can draw the first traction wire or the second traction wire to realize the bending of the head end of the catheter in different directions; The first conical gear and the traction wire transmission cylinder synchronously rotate, and the second conical gear rotates to drive the traction wire transmission cylinder to advance or retreat, so that different control on the first traction wire and the second traction wire is realized through two transmission modes, opposite effects are generated on the first traction wire and the second traction wire when the traction wire transmission cylinder moves, the deflectable section of the catheter bends towards one side of the first traction wire, and conversely bends towards one side of the second traction wire; The fixed part is connected with the traction wire transmission cylinder by bypassing the traction wire on the fixed part, and the fixed part is movably connected with the traction wire transmission cylinder; the transmission handle is fixed on the mechanical arm through a support, and a third conical gear and a fourth conical gear are arranged on the support, wherein the third conical gear is meshed with the first conical gear, and the fourth conical gear is meshed with the second conical gear; And transmitting a control instruction on the mechanical arm to the rotary control assembly through the third bevel gear and the fourth bevel gear.
2. A drive handle according to claim 1, wherein, The inner side wall of the traction wire transmission cylinder is provided with a position locking groove, the first conical gear and the traction wire transmission cylinder can synchronously rotate along the axial direction through the position locking groove, and the second conical gear is in threaded connection with the outside of the traction wire transmission cylinder.
3. A drive handle according to claim 2, wherein, And the second bevel gear is provided with a limiting groove for being connected with the first bevel gear, and the limiting groove is used for limiting the radial movement of the second bevel gear.
4. A drive handle according to any one of claims 1-3, wherein, The guide pipe is clamped in the transmission handle through the clamping piece.
5. A drive handle according to any one of claims 1-3, wherein, The head of the catheter is provided with an annular marking section with an annular opening, the annular marking section is made of shape memory materials, and the annular marking section is provided with more than 10 marking electrodes.
6. A drive handle according to any one of claims 1-3, wherein, The catheter is embedded with a metal woven mesh, and the metal woven mesh is positioned on the outer side of the first traction wire and the second traction wire in the radial direction.
7. A drive handle according to any one of claims 1-3, wherein, The mechanical arm is connected with the main control data processing system, the main control data processing system controls the rotary control assembly through the mechanical arm, and then the first traction wire or the second traction wire is pulled to achieve bidirectional bending of the head end of the catheter, and finally target mapping processing is achieved.

Description

Transmission handle for controlling annular dielectric mapping catheter Technical Field The invention relates to the technical field of medical equipment, in particular to a transmission handle for controlling an annular dielectric mapping catheter. Background Catheter radio frequency ablation is the most commonly used minimally invasive interventional technology for treating arrhythmia at present, when a catheter is clinically operated to perform ablation operation, percutaneous vascular puncture needs to be performed firstly, a catheter access path is established, the catheter is sent into a target heart chamber under perspective or three-dimensional image guidance, then an operator manually controls the catheter outside a patient under the guidance of electrophysiological and three-dimensional image technology to finish positioning and ablation of the arrhythmia focus, but the whole process needs the operator to manually and accurately control the catheter, and the stability and the accuracy of manual control of the catheter cannot be guaranteed effectively, so that the conventional radio frequency ablation by manually controlling the catheter has a plurality of inconveniences and unsafe. Disclosure of Invention The invention provides a transmission handle for controlling an annular dielectric mapping catheter, which aims to solve the problem that the accurate control of the catheter cannot be well carried out in the prior art. The invention provides an annular dielectric mapping catheter control device which is arranged on a mechanical arm, wherein the transmission handle comprises a rotary control component, a traction wire transmission cylinder, a fixing part and a handheld part, wherein a catheter enters from the head of the traction wire transmission cylinder and is connected with a signal wire at the tail end of the traction wire transmission cylinder, the rotary control component is fixed on one side of the head of the traction wire transmission cylinder, the fixing part is arranged on the catheter at the tail end of the traction wire transmission cylinder, and the handheld part is sleeved on the periphery of the traction wire transmission cylinder for grasping; A first traction wire and a second traction wire are symmetrically embedded in the catheter, wherein the first end of the first traction wire and the first end of the second traction wire are arranged at the preset position of the head of the catheter, and the second end of the first traction wire and the second end of the second traction wire are connected with the tail end of the traction wire transmission cylinder; Based on the control of the mechanical arm, under the cooperation of the rotary control assembly and the traction wire transmission cylinder, the rotary control assembly is used for dragging the first traction wire or the second traction wire so as to realize the bidirectional bending of the head end of the catheter, and the rotary control assembly is controlled to realize the rotation of the catheter, so that the target mapping treatment is finally realized. Optionally, the rotary control assembly comprises a first conical gear and a second conical gear; the first bevel gear is arranged at the head part of the traction wire transmission cylinder, and the first bevel gear and the second bevel gear synchronously rotate to drive the guide pipe to axially rotate; The second bevel gear is rotatably connected with the first bevel gear, and the second bevel gear rotates to drive the first traction wire or the second traction wire so as to realize bidirectional bending of the catheter head end. Optionally, the inside wall of traction wire transmission section of thick bamboo is equipped with the position locking groove, makes through the position locking groove first bevel gear with traction wire transmission section of thick bamboo can rotate along axial synchronization, the second bevel gear spiro union is in traction wire transmission section of thick bamboo is outer. Optionally, a limiting groove for engaging the first bevel gear is formed in the second bevel gear, and the limiting groove is used for limiting radial movement of the second bevel gear. Optionally, the end of the traction wire transmission cylinder is provided with a first connecting hole and a second connecting hole, the first traction wire is fixed on the first connecting hole, the second traction wire bypasses the fixing piece on the fixing part and is fixed on the second connecting hole, so that the rotation of the second bevel gear to different directions can draw the first traction wire or the second traction wire to realize the bending of the catheter head end in different directions. Optionally, the transmission handle is fixed on the mechanical arm through a support, and a third conical gear and a fourth conical gear are arranged on the support, wherein the third conical gear is meshed with the first conical gear, and the fourth conical gear is meshed with