CN-224220583-U - Ventricular assist device and assembly

CN224220583UCN 224220583 UCN224220583 UCN 224220583UCN-224220583-U

Abstract

Embodiments of the present application relate to the field of mechanical devices for driving cycles inside a ventricle, and more particularly to a ventricular assist device and assembly. The ventricular assist device comprises a tube body, a pump, a separator and a guide wire, wherein the guide wire is arranged to be capable of conveying the separator to a preset position of a ventricle, the tube body provides a flow channel for blood, a blood inlet and a blood outlet are formed at two ends of the tube body respectively, the pump is arranged at the blood outlet of the tube body and is used for pumping blood, the separator is arranged at the blood inlet of the tube body and is used for forming a coating on the blood inlet of the tube body, and the separator is arranged to enable the blood to enter the blood inlet through the separator and prevent the tube body from touching a ventricular wall in the process of sucking the blood. The present application also provides a ventricular assist assembly comprising a ventricular assist device as described above and a sheath assembly arranged to occlude a blood outlet when the ventricular assist device is delivered to a ventricle before it enters a blood vessel of a user, so as to prevent blood from exiting the blood outlet.

Inventors

PAN XIANGBIN
ZHAO GUANGZHI
LUO ZHILING
LU JIANG
SUN YI
ZHANG FENGWEN

Assignees

云南省阜外心血管病医院

Dates

Publication Date: 20260512
Application Date: 20241010

Claims (11)

1. A ventricular assist device for assisting ventricular function is characterized by comprising a tube body, a pump, a spacer and a guide wire, The guidewire is configured to deliver the spacer to a predetermined location of the ventricle; The tube body provides a flow channel for blood, a blood inlet is formed at one end of the tube body, and a blood outlet is formed at the other end of the tube body; The pump is arranged at the blood outlet of the tube body and is used for sucking blood in a ventricle from the blood inlet and pumping the blood out of the blood outlet; The separator is arranged at the blood inlet of the tube body and forms a coating at the blood inlet of the tube body, and the separator is arranged so that blood can enter the blood inlet through the separator and the tube body can not touch the wall of a ventricle in the process of sucking the blood.
2. The apparatus of claim 1, wherein the device comprises a plurality of sensors, The isolating piece comprises an isolating part and a first matching part, the isolating part is fixedly connected with the first matching part, The isolating part is arranged to form a coating on the blood inlet of the tube body; the first mating portion is configured for detachable connection with the guidewire.
3. The apparatus of claim 2, wherein the device comprises a plurality of sensors, One end of the guide wire forms a second matching part, and the first matching part and the second matching part can be detachably connected, so that the isolation piece and the guide wire can be detachably connected.
4. The apparatus of claim 1, wherein the device comprises a plurality of sensors, The guide wire is arranged to drive the spacer from the blood outlet into the tube and can protrude from the blood inlet.
5. The apparatus of claim 2, wherein the device comprises a plurality of sensors, The isolating part of the isolating piece is arranged to be coated at the blood inlet end of the tube body after the isolating piece extends out of the blood inlet, and the guide wire is arranged to be disconnected with the isolating piece after the isolating part is coated at the blood inlet end of the tube body.
6. The apparatus of claim 3, wherein the device comprises a plurality of sensors, The first fitting portion of the separator includes a separator wall portion provided to extend in a blood inlet direction toward the tube body, The second fitting portion is fitted to the inner side of the spacer wall portion to connect or disconnect the spacer wall portion to or from the second fitting portion; The outer side of the partition wall portion is matched with the tube body at the blood inlet end, so that the partition wall portion is fixedly connected with the tube body.
7. The apparatus of claim 6, wherein the device comprises a plurality of sensors, The outside of isolator wall portion is equipped with a plurality of bellying, a plurality of bellying set up to with form the wall buckle connection of the body of blood entry.
8. The apparatus of claim 6, wherein the device comprises a plurality of sensors, The tube body forms a mating wall portion at the blood inlet, the mating wall portion extending in a direction away from the separator, The matching wall part is formed with a plurality of protruding parts which are oppositely arranged, The outside of isolator wall portion is equipped with a plurality of bellying, the bellying of cooperation wall portion with the bellying of isolator wall portion cooperatees, so that isolator wall portion with body fixed connection.
9. The apparatus of claim 8, wherein the device comprises a plurality of sensors, The protruding part of the matching wall part and the protruding part of the spacer wall part are arranged in a process of fixedly connecting the spacer wall part and the pipe body, and the movement direction between the spacer and the pipe body is unidirectional.
10. A ventricular assist assembly comprising a housing having a first chamber and a second chamber, characterized in that it comprises the following components, The ventricular assist device of any one of claim 1 to 9, A sheath assembly configured to occlude the blood outlet when the ventricular assist device is delivered to a ventricle before it has entered a user's blood vessel to avoid blood flow from the blood outlet.
11. The assembly of claim 10, wherein the assembly comprises a plurality of components, The sheath component comprises a sheath component and a pipe fitting, the sheath component is fixedly connected with the pipe fitting, and the sheath component is arranged into two separable half sheaths, When the ventricular assist device is sent into the ventricle, one end of the two half sheaths is arranged at the blood outlet and seals the blood outlet, the other end of the two half sheaths is fixedly connected with the pipe fitting, the pipe fitting extends along the pipe body, The two half-sheaths are arranged to move with the tube of the ventricular assist device while the ventricle is delivering the ventricular assist device so that the blood outlet remains blocked, and are peeled off while the blood outlet is in the body of the user.

Description

Ventricular assist device and assembly Technical Field Embodiments of the present application relate to the field of mechanical devices for driving cycles inside a ventricle, and more particularly to a ventricular assist device and assembly. Background The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. Heart failure or heart failure affects the heart function of a patient, and further endangers the life safety of the patient, in clinical application, a ventricular assist device is usually adopted to assist in enhancing the heart function so as to relieve heart failure, and the ventricular assist device is an implantable mechanical pump, can pump blood from the lower chamber of the heart to other parts of the body, ensures that the blood supply function of the heart is maintained at a normal level, can reduce ventricular load, reduce myocardial cell oxygen consumption, increase cardiac output, stabilize hemodynamics and blood circulation, and provides guarantee for the heart function recovery and further treatment of the patient. Disclosure of utility model The following presents a simplified summary of the application in order to provide a basic understanding of some aspects of the application. It should be understood that this summary is not an exhaustive overview of the application. It is not intended to identify key or critical elements of the application or to delineate the scope of the application. Its purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later. A first aspect of an embodiment of the application provides a ventricular assist device for assisting ventricular function comprising a tube, a pump, a spacer and a guidewire, the guidewire being arranged to be able to carry the spacer to a predetermined position of a ventricle, the tube providing a flow path for blood, a blood inlet being formed at one end of the tube and a blood outlet being formed at the other end of the tube, the pump being arranged at the blood outlet of the tube for drawing in blood from the blood inlet in the ventricle and pumping it out of the blood outlet, the spacer being arranged at the blood inlet of the tube and forming a coating at the blood inlet of the tube, the spacer being arranged to be able to let blood into the blood inlet through the spacer and not to touch the wall of the ventricle during drawing in the blood. Further, the isolation piece comprises an isolation part and a first matching part, wherein the isolation part is fixedly connected with the first matching part, the isolation part is arranged to form a coating on the blood inlet of the tube body, and the first matching part is detachably connected with the guide wire. Further, one end of the guide wire forms a second mating portion, and the first mating portion and the second mating portion can be detachably connected, so that the spacer and the guide wire can be detachably connected. Further, the guide wire is configured to carry the separator from the blood outlet into the tube body and is capable of protruding from the blood inlet. Further, the separator of the separator is arranged to cover the blood inlet end of the tube body after the separator extends out of the blood inlet, and the guide wire is arranged to be disconnected from the separator after the separator covers the blood inlet end of the tube body. Further, the first fitting portion of the separator includes a separator wall portion provided to extend in a blood inlet direction toward the tube body, the second fitting portion is fitted to an inner side of the separator wall portion to connect or disconnect the separator wall portion to or from the second fitting portion, and an outer side of the separator wall portion is fitted to the tube body at the blood inlet end to fixedly connect the separator wall portion to the tube body. Further, the outside of the separator wall is provided with a plurality of protrusions arranged to be snap-connected with the wall of the tube forming the blood inlet. Further, the tube body forms a fitting wall portion at the blood inlet, the fitting wall portion extends along a direction away from the separator, the fitting wall portion is formed with a plurality of protruding portions, the protruding portions are arranged oppositely, the protruding portions of the fitting wall portion are arranged on the outer side of the separator wall portion, and the protruding portions of the fitting wall portion are matched with the protruding portions of the separator wall portion, so that the separator wall portion is fixedly connected with the tube body. Further, the protruding portion of the fitting wall portion and the protruding portion of the spacer wall portion are provided so that the direction of movement between the spacer and the pipe body is unidirectional in the process of fixedly connecting the spac