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An interventional catheter device

A catheter device and interventional technology, applied in the direction of catheters, circulatory assistance devices, blood pumps, etc., can solve the problems of small size and inaccessibility, and achieve the effect of reducing pain and complications

Active Publication Date: 2022-07-22
MAGASSIST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prior art pumps for ventricular assist devices cannot achieve very small dimensions when intervening, therefore, there is a need for improvements to the prior art to overcome said deficiencies in the prior art

Method used

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  • An interventional catheter device
  • An interventional catheter device
  • An interventional catheter device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see figure 1 and figure 2 As shown, the present invention provides an interventional catheter device comprising: a motor, a catheter 100 , a drive shaft 200 and a pump assembly 300 .

[0047] Therein, the motor is configured to be located outside the subject's body. The proximal end of the catheter 100 is connected to the motor. The drive shaft 200 is passed through the catheter 100, and the proximal end is connected with the output shaft of the motor. The pump assembly 300 can be delivered through the catheter 100 to the desired location of the subject's heart to pump blood, and includes a pump housing 310 connected to the distal end of the catheter 100 and having an inlet 311 and an outlet 312, housed within the pump housing 310 The impeller 320 is drivingly connected with the distal end of the drive shaft 200 . The impeller 320 is driven in rotation by the drive shaft 200 to draw blood into the pump housing 310 from the fluid inlet 311 and out of the fluid outle...

Embodiment 2

[0099] see Figure 8 and Figure 9 As shown, the difference between this embodiment and the first embodiment is that the folding manner of the pump assembly 300 is different. In the first embodiment, the impeller 320 of the pump assembly 300 is switched between the collapsed state and the expanded state by sliding the distal end section of the catheter 100 relative to the drive shaft 200 in the axial direction.

[0100] In this embodiment, the restraining assembly includes a pump casing restraining member 120 slidably sleeved outside the conduit 100 in the axial direction for collapsing the pump casing 310 and the impeller 320 . Further, the above-mentioned pump casing restraining member 120 is also an impeller restraining member.

[0101] That is to say, unlike the impeller restraint in the first embodiment, which can only fold or release the impeller 320 , the pump casing restraint 120 in this embodiment can fold or release not only the impeller 320 but also the pump casin...

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PUM

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Abstract

The invention provides an interventional catheter device, comprising: a motor configured to be located outside a subject; a catheter, the proximal end of which is connected to the motor; a drive shaft, which passes through the catheter, and the proximal end is connected to the output shaft of the motor; A pump assembly capable of pumping blood through a catheter to be delivered to a desired location in a subject's heart, comprising a pump housing connected to the distal end of the catheter and having a fluid inlet and outlet, received within the pump housing and distal to a drive shaft a drive-connected impeller; the impeller is driven in rotation by a drive shaft to draw blood into the pump housing from the fluid inlet and out of the fluid outlet; wherein the pump assembly is configured to include a fold adapted for delivery in the subject's vasculature A state and a deployed state suitable for pumping blood at a desired location; wherein the pump assembly and part of the catheter constitute an interventional segment, and the largest outer diameter dimension of the interventional segment when the pump assembly is in the collapsed state is no greater than 9Fr.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an interventional catheter device. Background technique [0002] In certain disease states, the heart lacks sufficient pumping capacity to maintain adequate blood flow to the body's organs and tissues. For example, conditions such as ischemic heart disease and high blood pressure may prevent the heart from filling and pumping efficiently. Mechanical pumps (also known as ventricular assist devices) supplement the pumping action of the heart to alleviate this deficiency of the heart. Ventricular assist devices can be used to assist the right ventricle, the left ventricle, or both. For example, a ventricular assist device can assist the left ventricle by mechanically pumping oxygenated blood from the left ventricle into the aorta. [0003] A ventricular assist device includes a pump that can be inserted into a subject. The pumps of the prior art central chamber aids cann...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M25/00A61M60/109A61M60/117A61M60/216A61M60/411A61M60/802A61M60/81A61M60/845
CPCA61M25/0043A61M25/0082A61M60/109A61M60/117A61M60/216A61M60/411A61M60/802A61M60/81A61M60/845
Inventor 徐嘉颢陈阳陈伟李本帅
Owner MAGASSIST CO LTD
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