阅读说明：本技术 一种用于手术的血栓过滤装置 (Thrombus filtering device for operation ) 是由 陈大凯 于 2020-03-16 设计创作，主要内容包括：本发明涉及医疗器械的技术领域,尤其涉及一种用于手术的血栓过滤装置,包括过滤层、过滤层支撑架、固定支架、控丝；所述过滤层支撑架呈船型,用于支撑于血管中；所述过滤层覆盖在过滤层支架上,用于过滤血栓；所述固定支架包括分别固定于过滤层支撑架不同侧的若干固定支架,以抵靠血管壁辅助过滤层支撑架的稳定支撑；所述若干固定支架分别连接有控丝,所述控丝用于拉动固定支架调节固定支架的位置。本发明的一种用于手术的血栓过滤装置能够利于手术者将其稳定快捷地放置到血管预定位置处,并且能够在放置位置不当时进行调整,降低手术难度,提高手术的成功率。(The invention relates to the technical field of medical instruments, in particular to a thrombus filtering device for operation, which comprises a filtering layer, a filtering layer supporting frame, a fixed support and a control wire; the filter layer support frame is ship-shaped and is used for supporting in a blood vessel; the filter layer is covered on the filter layer bracket and is used for filtering thrombus; the fixing supports comprise a plurality of fixing supports which are respectively fixed on different sides of the filtering layer support frame so as to support the stable support of the vessel wall auxiliary filtering layer support frame; the plurality of fixing supports are respectively connected with a control wire, and the control wires are used for pulling the fixing supports to adjust the positions of the fixing supports. The thrombus filtering device for the operation can be conveniently and stably placed at a preset position of a blood vessel by an operator, and can be adjusted when the placing position is not proper, so that the operation difficulty is reduced, and the success rate of the operation is improved.)

1. The thrombus filtering device for the operation is characterized by comprising a filtering layer, a filtering layer supporting frame, a fixing support and a control wire; the filter layer support frame is ship-shaped and is used for supporting in a blood vessel; the filter layer is covered on the filter layer bracket and is used for filtering thrombus; the fixing supports comprise a plurality of fixing supports which are respectively fixed on different sides of the filtering layer support frame so as to support the stable support of the vessel wall auxiliary filtering layer support frame; the plurality of fixing supports are respectively connected with a control wire, and the control wires are used for pulling the fixing supports to adjust the positions of the fixing supports.

2. The thrombus filtering device for operation according to claim 1, wherein a wire control bracket is provided on the filter layer support frame, and the wire control bracket is used for threading and winding a wire control wire to change the tension direction of the wire control wire.

3. A surgical thrombus filter device according to claim 2 wherein the abutting ends of the fixed stent and the vessel wall are textured to increase friction.

4. A thrombus filter device for surgery according to claim 3, wherein the filter layer is a multi-layer filter structure.

5. The thrombus filter device according to claim 4, wherein the multiple layers of filter layers comprise filter layers with different filtering precisions, the material comprises one or more of a filter screen and a filter membrane, and the filter layers are loaded with one or more drugs.

6. A thrombus filter device for surgery according to claim 5, wherein a net-changing wire is connected to each of the plurality of filter layers, and the net-changing wire is used to pull the connected filter layer to be peeled off from the plurality of filter layers.

7. The thrombus filtering device for operation according to claim 6, wherein the number of the fixing supports is two, and the fixing supports are splayed in shape and comprise an upper fixing support and a lower fixing support which are respectively fixed at both sides of the middle part of the filter layer supporting frame; the top of the splayed upper fixing support and the top of the splayed lower fixing support are respectively connected with respective control wires, and the bottoms of the splayed upper fixing support and the splayed lower fixing support are respectively connected to two sides of the middle part of the filter layer supporting frame.

8. The thrombus filter device for surgery according to claim 7, wherein the wire control stent is placed at an end of the filter layer stent, the wire control stent is shaped like a figure 8, and the wire control of the upper and lower fixed stents respectively passes through two loops of the figure 8 of the wire control stent and is folded back to the other end of the filter layer stent.

9. The thrombus filter device for surgery according to claim 8, wherein the filter layer support frame is composed of 2-10 elastic memory material wires, and the elastic memory material wires are composed of one or more of nickel titanium wires, stainless steel wires, polyurethane, polylactic acid and its copolymer modification, carbon fibers, glass fibers and Kevlar fibers; the connection mode of the filter layer support frame and the fixing support comprises any one of welding, integral forming and fixing piece connection.

10. The thrombus filter device for surgery of any one of claims 1-9, wherein the wire diameter of the wire control is less than 0.1mm, and the wire control is made of one or more of nitinol wire, stainless steel wire, carbon fiber and glass fiber.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a thrombus filtering device for an operation.

Background

In vascular interventional therapy and valve repair surgery, almost all patients have release of thrombus-causing substances at stenotic lesions or cause shedding of fine tissues during valve repair, and can cause embolism of far ends of blood vessels, so that perfusion of far ends of blood vessels is obstructed. After successful treatment, lipid fragments, matrix components, endothelial cells, inflammatory cells, platelets, leukocyte adhesion and the like in the plaque can form embolism, enter a far-end blood vessel along the direction of blood flow, and block the blood supply of important organs, such as brain and heart and other important organs, so that the immediate or long-term prognosis of a patient is influenced. A thrombus filtration device is a system that can filter out thrombus or plaque. The success rate of the operation can be greatly improved after the thrombus filtering device is used, and the prior art, for example, the patent document with the application number of 201721320118.8 discloses a thrombus protection device. It sets up in intravascular preset position department for filter the thrombus, thrombus protector includes skeleton and filter screen, the skeleton will the filter screen support in intravascular preset position department, the filter screen can filter the thrombus. The skeleton includes the main frame and with first supporting part and the second supporting part that the main frame links to each other, first supporting part and the second supporting part to the different lateral parts of main frame extend, the main frame first supporting part and the second supporting part be used for respectively laminating in on the inner wall of different positions of blood vessel department. When the structure of the stent adopts common memory alloy, the stent is difficult to place in the process of releasing and recovering the deformation in the operation, so that the placement position is unreasonable, the stent can not effectively support the framework to resist the blood flow impact, and even the dislocation applies excessive pressure to the blood vessel to cause additional damage to the blood vessel.

In view of the above technical problems, it is desirable to improve.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a thrombus filtering device for operation.

In order to achieve the purpose, the invention adopts the following technical scheme:

a thrombus filtering device for operation comprises a filtering layer, a filtering layer supporting frame, a fixing bracket and a control wire; the filter layer support frame is ship-shaped and is used for supporting in a blood vessel; the filter layer is covered on the filter layer bracket and is used for filtering thrombus; the fixing supports comprise a plurality of fixing supports which are respectively fixed on different sides of the filtering layer support frame so as to support the stable support of the vessel wall auxiliary filtering layer support frame; the plurality of fixing supports are respectively connected with a control wire, and the control wires are used for pulling the fixing supports to adjust the positions of the fixing supports.

According to a preferable scheme, the filter layer supporting frame is provided with a wire control support, and the wire control support is used for enabling a wire to be threaded and wound to change the tension direction of the wire control.

Preferably, the abutting end of the fixed stent and the vessel wall is provided with grains so as to increase the friction force.

Preferably, the filter layer is a multi-layer filter layer structure.

Preferably, the multi-layer filter layer comprises filter layers with different filter precisions, the material of the multi-layer filter layer comprises one or a combination of a filter screen and a filter membrane, and the filter layer is loaded with one or more medicines.

Preferably, each filter layer of the multi-layer filter layer is connected with a screen changing wire, and the screen changing wire is used for pulling the connected filter layer to be peeled from the multi-layer filter layer.

As a preferred scheme, the number of the fixing supports is two, the fixing supports are in a splayed shape and comprise an upper fixing support and a lower fixing support which are respectively fixed on two sides of the middle part of the filter layer supporting frame; the top of the splayed upper fixing support and the top of the splayed lower fixing support are respectively connected with respective control wires, and the bottoms of the splayed upper fixing support and the splayed lower fixing support are respectively connected to two sides of the middle part of the filter layer supporting frame.

Preferably, the wire control bracket is arranged at the end part of the filter layer bracket, the wire control bracket is 8-shaped, and the wires of the upper fixing bracket and the lower fixing bracket respectively pass through two 8-shaped ring parts of the wire control bracket and are folded back to the other end of the filter layer bracket.

Preferably, the filter layer supporting frame is composed of 2-10 elastic memory material wires, and the elastic memory material wires are composed of one or more of nickel titanium wires, stainless steel wires, polyurethane, polylactic acid and copolymerization modification thereof, carbon fibers, glass fibers and Kevlar fibers; the connection mode of the filter layer support frame and the fixing support comprises any one of welding, integral forming and fixing piece connection.

Preferably, the wire diameter of the wire control is less than 0.1mm, and the wire control is made of one or a combination of more of nickel-titanium alloy wires, stainless steel wires, carbon fibers and glass fibers.

Compared with the prior art, the thrombus filtering device can be conveniently and stably placed at a preset position of a blood vessel by an operator, can be adjusted when the placing position is not proper, can effectively filter thrombus by the multiple filtering layers, can replace the filtering layers of the filtering layers in the operation process, reduces the operation difficulty, and improves the success rate of the operation.

Drawings

FIG. 1 is a schematic structural diagram of a thrombus filter device for surgery according to a first embodiment of the present invention;

FIG. 2 is a front view of a thrombus filter device for surgery according to a first embodiment of the present invention;

FIG. 3 is a schematic view of a blood vessel at the aortic arch where a thrombus filter device for operation according to a first embodiment of the present invention is placed;

FIG. 4 is a schematic view of the aortic arch with the thrombus filter device according to the first embodiment of the present invention;

FIG. 5 is a schematic view showing a filter layer of a thrombus filter device for operation according to a second embodiment of the present invention, the filter layer being made of a filter membrane;

FIG. 6 is a schematic structural view of a filter layer support frame for surgery according to a third embodiment of the present invention, which is connected to a fixing frame in the form of a steel sleeve;

FIG. 7 is a schematic view showing a structure of a filter layer of a thrombus filter device for operation according to a fourth embodiment of the present invention, which is a multi-layer filter layer;

FIG. 8 is a schematic structural view of a thrombus filter device for surgery according to a fifth embodiment of the present invention;

wherein: 100. a thrombus filtration device; 101. a filter layer support frame; 102. an upper fixing bracket; 103. a lower fixed bracket; 104. a screen having pores less than 0.15 square millimeters; 105. controlling the filaments; 106.8-shaped circular rings; 107. a sheath tube; 108. the connecting part of the fixed bracket and the filter layer supporting frame; 109. thrombosis; 110. innominate artery; 111. the left common carotid artery; 112. the left subclavian artery; 113. the blood flow; 114. changing the mesh; 115. and (5) steel sleeve.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

The invention aims to overcome the defects of the prior art and provides a thrombus filtering device for operation.