Unlock instant, AI-driven research and patent intelligence for your innovation.

Self-adaptive valve clamping device and valve clamping system

An adaptive valve technology, applied in the field of medical devices, can solve the problem that the clamping force cannot be adjusted in real time, and achieve the effect of preventing secondary damage, avoiding tearing, and accelerating the recovery of normal coaptation level

Pending Publication Date: 2022-07-01
HANGZHOU VALGEN MEDTECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A main purpose of the present invention is to overcome the defect that the clamping force cannot be adjusted in real time with the movement of the valve leaflets or the gap between the valve leaflets in the existing valve clamping device, and to provide an adaptive valve clamping device and valve clamping system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Self-adaptive valve clamping device and valve clamping system
  • Self-adaptive valve clamping device and valve clamping system
  • Self-adaptive valve clamping device and valve clamping system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see Figure 1-4 , Embodiment 1 of the present invention discloses an adaptive valve clamping device 1000 , which includes a clamping assembly 100 , a transmission assembly 200 and an elastic self-locking member 300 . The clamping assembly 100 includes a pair of openable and closable jaw arms 110 . The transmission assembly 200 includes a fixed base 210 and a drive shaft 220 movably penetrated in the fixed base 210. Each clamp arm 110 is movably connected to the fixed base 210 and the drive shaft 220. The axial movement of the drive shaft 220 drives the clamp The arm 110 is opened or closed relative to the fixed base 210 . The elastic self-locking member 300 is sleeved on the outer peripheral surface of the drive shaft 220 , and the two ends of the elastic self-locking member 300 in a natural state are located between the distal end of the fixed base 210 and the proximal end of the driving shaft 220 .

[0054] In the technical solution of the present invention, the dri...

Embodiment 2

[0091] see Figure 18-Figure 22 , the structure of the valve clamping device 1000 in the second embodiment of the present invention is basically the same as that in the first embodiment. The position of the driving pin 2201 is different from the position of the forceps arm 110 , and is sequentially arranged from proximal to distal along the axial direction of the valve clamping device 1000 . When the drive shaft 220 is pushed distally, the clamp arms 110 are in an open state; when the drive shaft 220 is pulled proximally, the clamp arms 110 are in a closed state. In this embodiment, the elastic self-locking member 300 is also a pressure spring 310 , that is, the external force from the initial state to the deformed state is pressure, and the elastic force of the elastic self-locking member 300 acts between the fixed base 210 and the drive shaft 220 .

[0092] The structural advantages of this embodiment: (1) the size of the fixing base 210 is small and the structure is compac...

Embodiment 3

[0097] see Figure 27-Figure 30 , the structure of the valve clamping device 1000 of the third embodiment of the present invention is basically the same as that of the first embodiment, the clamp arm 110 and the fixed base 210 are rotatably connected. For the arm 130 , when the driving shaft 220 moves relative to the fixed base 210 in the axial direction, the connecting arm 130 drives the clamp arm 110 to open or close relative to the fixed base 210 . The difference also lies in the fact that the clamp arm 110 and the drive shaft 220 are rotatably connected.

[0098] see Figure 31-Figure 33 , the elastic self-locking member 300 is arranged on the outside of the drive shaft 220, the proximal end surface of the elastic self-locking member 300 is welded and fixed with the fixing base 210, and the distal surface is welded and fixed with the driving shaft 220, so that the elasticity acts on the fixing base 210 and the drive shaft 220. In this embodiment, the elastic self-lockin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Elastic coefficientaaaaaaaaaa
Axial lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a self-adaptive valve clamping device and a valve clamping system. The self-adaptive valve clamping device comprises a clamping assembly, a transmission assembly and an elastic self-locking piece. The clamping assembly comprises a pair of clamp arms capable of being opened and closed. The transmission assembly comprises a fixed base and a driving shaft movably arranged in the fixed base in a penetrating mode, each clamp arm is movably connected with the fixed base and the driving shaft, and the axial movement of the driving shaft drives the clamp arms to be opened or closed relative to the fixed base. The elastic self-locking piece is arranged on the peripheral face of the driving shaft in a sleeving mode, and the two ends of the elastic self-locking piece in the natural state are located between the far end of the fixed base and the near end of the driving shaft. According to the valve clamping device, in the valve leaflet clamping process, deformation of the elastic self-locking piece is automatically adjusted in real time along with stress changes of the valve leaflet, so that the clamp arms keep applying flexible clamping force to the valve leaflet, and tearing caused by excessive traction of the valve leaflet is avoided; and the clamping force can be automatically adjusted along with the change of the valve leaflet gap, so that the valve leaflet clamping device adapts to a new valve leaflet gap.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an adaptive valve clamping device and a valve clamping system. Background technique [0002] The mitral valve is a one-way valve between the left atrium and left ventricle of the heart. A normal, healthy mitral valve controls the flow of blood from the left atrium to the left ventricle, while preventing blood from flowing from the left ventricle to the left atrium. The mitral valve consists of a pair of leaflets, called the anterior and posterior leaflets, see figure 1 As shown, when the edges of the anterior and posterior leaflets coincide, the mitral valve can be fully closed, preventing blood flow from the left ventricle to the left atrium. When the leaflets of the mitral valve or their related structures are qualitatively or functionally altered, the anterior and posterior leaflets of the mitral valve are misaligned, thus, when the left ventricle of the h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61F2/24
CPCA61F2/2466A61F2/246A61F2/2442
Inventor 王建安刘先宝郑贤章张伟伟张庭超
Owner HANGZHOU VALGEN MEDTECH CO LTD