CN210228397U

CN210228397U - Vena cava filter capable of achieving unidirectional access

Info

Publication number: CN210228397U
Application number: CN201920706733.5U
Authority: CN
Inventors: Bin Hao; 郝斌; Haiping Jing; 景海平; Gang Li; 李刚; Ruiguang Sun; 孙瑞光; Jiahao Liu; 刘佳豪; Wenbin Li; 李文斌; Pingxi Yao; 姚平喜
Original assignee: Shanxi Dayi Hospital (shanxi Academy Of Medical Sciences)
Current assignee: Shanxi Dayi Hospital (shanxi Academy Of Medical Sciences)
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-04-03
Anticipated expiration: 2029-05-16

Abstract

The utility model provides a vena cava filter of one-way business turn over, including retrieving couple, sleeve pipe, V type bracing piece, retrieve couple, sleeve pipe, V type bracing piece shaping of bending, the bent angle department welding of V type bracing piece has the barb. The utility model discloses a barb and vascular tissue contact support, the effectual area of contact that has reduced, can effectual reduction when needs are retrieved the damage that causes vascular tissue, also alleviateed patient's misery, simultaneously through the double-deck setting of V type bracing piece, improved the capture effect to the thrombus.

Description

Vena cava filter capable of achieving unidirectional access

Technical Field

The utility model relates to a cardiovascular system medical instrument specifically is a thrombus of plankton among the recoverable filter vena cava system, the vena cava thrombus filter of prevention pulmonary embolism, pulmonary infarction emergence.

Background

The lantern-shaped recoverable venous filter appearing in the market at present is supported by 6-8 nickel-titanium rods in a blood vessel, has good stability, but the hyperplastic tissue of the blood vessel can completely wrap the transverse nickel-titanium rods, and can cause large wound to a patient during later recovery.

SUMMERY OF THE UTILITY MODEL

Not enough to current technique, the utility model provides a vena cava filter of one-way business turn over.

In order to realize the purpose, the utility model adopts the technical scheme that: including retrieving couple, sleeve pipe, V type bracing piece, retrieve couple, sleeve pipe, V type bracing piece shaping of bending, the bent angle department welding of V type bracing piece has the barb.

Furthermore, the recovery hook, the sleeve, the V-shaped support rod and the barb are made of nickel-titanium alloy, and the performance is stable.

Furthermore, the V-shaped supporting rods are eight, and the V-shaped supporting rods are connected with the recovery hook through sleeve riveting.

Furthermore, the V-shaped supporting rods have four bending points of the V-shaped supporting rods on the same plane, the other four bending points of the V-shaped supporting rods on the same plane, the angle of the V-shaped supporting rods which are completely expanded is 105 degrees, the V-shaped supporting rods surround the recovery hook and are arranged in 360-degree equal intervals, double-layer filtering is realized through the arrangement of the V-shaped supporting rods, and good thrombus capture capacity is achieved.

The utility model has the advantages that: the utility model discloses a barb and vascular tissue contact support, the effectual area of contact that has reduced, can effectual reduction when needs are retrieved the damage that causes vascular tissue, also alleviateed patient's misery, simultaneously through the double-deck setting of V type bracing piece, improved the capture effect to the thrombus.

Drawings

Fig. 1 is a schematic view of the overall structure of the present example.

Fig. 2 is a bottom view of the overall structure of this example.

Fig. 3 is an overall structural front view of the present example.

Detailed Description

As shown in fig. 1-3, the utility model provides a vena cava filter with one-way access, the structure of which comprises a recovery hook 1, a sleeve 2, a V-shaped support rod 3 and a barb 4. The recovery hook 1, the sleeve 2, the V-shaped support rod 3 and the barb 4 are formed by bending a nickel-titanium alloy wire, the stability is strong, the barb 4 is welded at the bending point of the V-shaped support rod 2 by laser, when the utility model is placed into a blood vessel, the barb 4 can be contacted and supported with the blood vessel tissue, the contact area between the utility model and the blood vessel tissue is effectively reduced, and through the structure, the blood vessel tissue can be damaged as little as possible during recovery, and the pain of a patient caused by tearing of the blood vessel tissue can be reduced; v type bracing piece 2 and recovery couple 1 are connected through nickel titanium alloy sleeve pipe 2 riveting, V type bracing piece 2 can expand, shrink as the axle center by sleeve pipe 2, V type bracing piece is eight, wherein there are the bending point of four V type bracing pieces in a plane, the bending point of four V type bracing pieces is in a plane in addition, the angle that V type bracing piece totally expanded is 105 degrees, it is 360 degrees partition arrangements to surround recovery couple, through the setting of V type bracing piece, double-deck filtration has been realized, good thrombus capture ability has.

Claims

1. The utility model provides a vena cava filter of one-way business turn over, is including retrieving couple, sleeve pipe, V type bracing piece, its characterized in that: retrieve couple, sleeve pipe, V type bracing piece shaping of bending, the bent angle department welding of V type bracing piece has the barb.

2. A one-way access vena cava filter according to claim 1, wherein: the recovery hook, the sleeve, the V-shaped support rod and the barb are made of nickel-titanium alloy.

3. A one-way access vena cava filter according to claim 1, wherein: the V-shaped supporting rods are eight, and the V-shaped supporting rods are connected with the recovery hook through sleeve riveting.

4. A unidirectional access vena cava filter according to claim 1 or 3 wherein: the V-shaped supporting rods are characterized in that four bending points of the V-shaped supporting rods are on the same plane, the other four bending points of the V-shaped supporting rods are on the same plane, the angle of the V-shaped supporting rods which are completely expanded is 105 degrees, and the V-shaped supporting rods surround the recovery hook and are arranged in 360-degree equal intervals.