CN207768437U - Single riveting, self-adaptation type oval hole plugging device - Google Patents

Abstract

The utility model is related to a kind of single rivetings, self-adaptation type oval hole plugging device, main body is the metallic support Dropbox with preset self-expanding function, metallic support Dropbox includes braided wires that are a plurality of interlaced and being wound along main body, the end face of main body is equipped with left disk, other end is equipped with right disk, waist is equipped between left disk and right disk, the first filler is enclosed in waist, a metal riveter is equipped on the outside of the center of right disk to collect the metal twine of metallic support Dropbox, elastic device is welded in the metallic support Dropbox of waist, the cross section of left disk and right disk is equipped with the second filler.The utility model has the beneficial effects that：Double plate button type designs, and keeps disk fitting close；Single head without riveting design, be easy to endothelial cell climb it is attached, reduce the endothelialization time, thrombosis can be reduced；Waist adaptive design, according to the length of the PFO " hole " of patient itself, width, realizes that adaptively plugging effect dramatically increases during plugging device discharges.

Description

Single riveting, self-adaptation type oval hole plugging device

Technical field

The utility model is related to the field of medical instrument technology more particularly to a kind of single riveting, self-adaptation type acleistocardia envelopes Stifled device.

Background technology

Oval foramen occurs in the development of fetus phase, and blood must flow to the left side by this notch on the right of heart.It is most of In the case of oval foramen the 1st year self-closed generally after life, be not closed title acleistocardia still if more than 3 years old child's oval foramen (Patent foramen oval,PFO).There is 20%~25% oval foramen not completely closed in adult.Acleistocardia It is congenital cardiac anomaly most commonly seen in current adult, can detect 1 people in about 4 people in normal population suffers from this disease. 1,500,000 patients with congenital heart diseases of China, annual congenital heart disease illness rate are 6.78%, and annual new born children with CHD is up to 100,000-15 Ten thousand, wherein simple acleistocardia accounts for about the 10% of congenital heart disease.

Acleistocardia is a kind of very common problem, and PFO holes are also possible that leads to potential severe complication. For a long time it is believed that acleistocardia does not cause the shunting in two rooms generally, influence is had no on the haemodynamics of heart, It is thus regarded that " unimportant ".In recent years many studies have shown that, deposited between acleistocardia and unknown cause patients with cerebral apoplexy In close contact, this is because by the oval foramen of patent, following embolus can feel concerned about system into a left side and cause corresponding clinic Symptom：1, the thrombus of deep veins of lower limb or pelvic veins；2, the air embolus caused by bends or decompression sickness；3, operation or wound The fat embolus formed afterwards.And for occurred Cardioversion acleistocardia patient its it is recurrent it is dangerous still very It is high.In addition, it has been found that acleistocardia is related with the morbidity of decompression sickness, migraine etc., and being closed oval foramen may be beneficial to above-mentioned Patient.

Main product is the holy tradition pair still produced up to medical supplies company, Beijing Starway Medical Technology Inc. at present Disk double riveting PFO plugging devices and Shenzhen lifetech Scientific Inc. innovative product -- one-sided metallic coating PFO plugging devices are facing All there is a problem of in bed use more or less.

1. waist diameter design is fixed (4-6mm), but oval foramen " hole " diameter of patient varies with each individual, with fixation The PFO plugging devices of size cannot block completely.

2. plugging device is designed as double plate or class double plate structure, disk distance between the surface are fixed, when clinical application have fitting it is not tight, Fall off equivalent risk, and plugging effect is bad, and immediate postoperative residual shunt is more serious.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of single riveting, self-adaptation type oval hole plugging devices.

The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of list riveting oval hole plugging device, packet Main body and elastic device are included, main body is the metallic support Dropbox with preset self-expanding function, the metallic support Dropbox packet Include a plurality of interlaced and along the braided wires that the main body is wound, the end face of the main body is equipped with left disk, and other end is set There is right disk, the left disk is parallel with the right disk, and waist, the waist are equipped between the left disk and the right disk It is enclosed with the first filler in portion, a metal riveter is equipped on the outside of the center of the right disk to collect the metallic support Dropbox Metal twine, the elastic device is welded in the metallic support Dropbox of the waist, and be separately connected the left disk and The cross section of the right disk, the left disk and the right disk is equipped with the second filler.

The utility model is designed using double plate button type, and disk fitting can be made close, not easily to fall off；Single head is set without riveting Meter is easy to endothelial cell and climbs attached, the reduction endothelialization time, while can reduce thrombosis；Realize the adaptive of waist structure It answers, according to oval foramen " hole " diameter of patient, waist is expanded to and its diameter same size, composition envelope completely automatically It is stifled, while automatic adaptation disk spacing, further solution fitting is not tight, fall off equivalent risk, and immediate postoperative ultrasonic examination, which remains, to divide Stream substantially reduces, and plugging effect dramatically increases.

Further, the braided wires are Nitinol.

Using the advantageous effect of further technology：Nitinol is a kind of marmem, and marmem is energy The plastic deformation of itself is automatically restored to the special alloy of original-shape under a certain specific temperature.Its expansion and contraction is 20% More than, fatigue life is extremely long, and damping characteristic is 10 times higher than common spring, corrosion resistance better than it is best at present it is medical not Become rusty steel, therefore can meet the application demand of all kinds of engineerings and medicine, is a kind of very outstanding functional material.

Further, first filler is polyester fiber non-woven fabric and polyurethane nucleome, the polyester fiber non-woven fabric The polyurethane nucleome is wrapped up, second filler is polyester fiber film.

Using the advantageous effect of further technical solution：Different functions is realized using the filler of two kinds of different materials, The wrinkle resistance and conformality of the polyester fiber are fine, have higher intensity and elastic recovery capability, and polyurethane nucleome has There is good radiopacit, convenient for placing and positioning when operation.

Further, the volume of the polyurethane nucleome is not less than the one third of the waist.

Using the advantageous effect of further technical solution：The compact structure of the polyurethane nucleome, as developing mark While play the role of support plugging device.

Further, the elastic device includes more interlaced the first springs and second wound along the main center The both ends of spring, first spring are respectively welded in the left disk and the right disk, and first spring stretches Direction and the plane where the left disk and the right disk are vertical, and the second spring winding is arranged in first bullet On spring, the telescopic direction of the second spring is vertical with first spring.

Using the advantageous effect of further technical solution：First spring determines between the left disk of the plugging device and right disk Away from, prevent plugging device from falling off, the thickness of second spring decision waist, the complete oval foramen " hole " for blocking patient.

Further, first spring is tensional state, and the second spring is compressive state.

Using the advantageous effect of further technical solution：The meeting self-constriction of first spring, limits between left disk and right disk Away from, prevent plugging device from falling off, second spring meeting self-expanding, the complete oval foramen " hole " for blocking patient.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram of single riveting oval hole plugging device in the prior art；

Fig. 2 be a kind of single riveting of the utility model, self-adaptation type oval hole plugging device structural schematic diagram.

Specific implementation mode

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining this practicality It is novel, it is not intended to limit the scope of the utility model.

As shown in Figure 1, traditional oval hole plugging device (PFO plugging devices) is made of NiTi screen knitting, it is double Disc type, can not self-expanding implantation instrument.Double plate is connected by a short waist, to increase its making capacity.

As shown in Fig. 2, a kind of single riveting of the utility model, self-adaptation type oval hole plugging device, including main body and elasticity Device 5, main body are the metallic support Dropbox 1 with preset self-expanding function, and metallic support Dropbox 1 includes a plurality of interlaced And along the braided wires of main body winding, the end face of main body is equipped with left disk 2, and other end is equipped with right disk 3, left disk 2 and the right side Disk 3 is parallel, and waist is equipped between left disk 2 and right disk 3, is enclosed with the first filler in waist, outside the center of right disk 3 Side is equipped with a metal riveter 4 to collect the metal twine of metallic support Dropbox 1, and elastic device 5 is welded on the metallic support of waist In Dropbox, and it is separately connected left disk 2 and right disk 3, the cross section of left disk 2 and right disk 3 is equipped with the second filler.Bullet Property device 5 can be such that left disk 2 and right disk 3 is bonded closely, not easily to fall off；Single head without riveting design, be easy to endothelial cell climb it is attached, The endothelialization time is reduced, while thrombosis can be reduced；The adaptive of waist structure is realized, according to the oval foramen of patient " hole " diameter, at the same waist be expanded to automatically with its diameter same size, constitute and block completely, while adapting to disk automatically Interplanar distance, further solution fitting is not tight, fall off equivalent risk, and immediate postoperative ultrasonic examination residual shunting substantially reduces, closure effect Fruit dramatically increases.

The Nitinol that braided wires are.Nitinol is a kind of marmem, and marmem is can be by itself Plastic deformation the special alloy of original-shape is automatically restored under a certain specific temperature.Its expansion and contraction 20% or more, Fatigue life is extremely long, and damping characteristic is 10 times higher than common spring, and corrosion resistance is better than medical stainless steel best at present, because This can meet the application demand of all kinds of engineerings and medicine, be a kind of very outstanding functional material.

First filler is polyester fiber non-woven fabric and polyurethane nucleome, and polyester fiber non-woven fabric wraps up polyurethane nucleome, Second filler is polyester fiber film.Different functions, the polyester fiber are realized using the filler of two kinds of different materials Wrinkle resistance and conformality it is fine, have higher intensity and elastic recovery capability, and polyurethane nucleome have good X-ray Impermeability, convenient for placing and positioning when operation.

The volume of polyurethane nucleome is the one third of waist.The compact structure of polyurethane nucleome, as developing mark While play the role of support plugging device.

Elastic device 5 include more it is interlaced along main center winding the first springs 51 and second spring 52, first The both ends of spring 51 are respectively welded in left disk 2 and right disk 3, telescopic direction and left disk 2 and the right disk 3 of the first spring 51 The plane at place is vertical, and the winding of second spring 52 is arranged on the first spring 51, the telescopic direction of second spring 52 and first Spring 51 is vertical.First spring 51 determines the spacing of the left disk 2 and right disk 3 of the plugging device, prevents plugging device from falling off, the Two springs 52 determine the thickness of waist, block the oval foramen " hole " of patient completely.

First spring 51 is tensional state, and second spring 52 is compressive state.The meeting self-constriction of first spring 51, limits left disk The spacing in face 2 and right disk 3, prevents plugging device from falling off, and second spring 52 can self-expanding, the completely oval foramen " hole of closure patient Hole ".

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (6)

1. a kind of list riveting, self-adaptation type oval hole plugging device, which is characterized in that including main body and elastic device (5), main body For the metallic support Dropbox (1) with preset self-expanding function, the metallic support Dropbox (1) include it is a plurality of interlaced and Along the braided wires of main body winding, the end face of the main body is equipped with left disk (2), and other end is equipped with right disk (3), institute It is parallel with right disk (3) to state left disk (2), waist is equipped between the left disk (2) and the right disk (3), it is described It is enclosed with the first filler in waist, a metal riveter (4) is equipped on the outside of the center of the right disk (3) to collect the metal The metal twine of holder Dropbox (1), the elastic device (5) is welded in the metallic support Dropbox of the waist, and connects respectively Connect the left disk (2) and the right disk (3), the cross section of the left disk (2) and the right disk (3) is equipped with second Filler.

2. a kind of single riveting according to claim 1, self-adaptation type oval hole plugging device, which is characterized in that the volume Knit the Nitinol that silk is.

3. a kind of single riveting according to claim 1, self-adaptation type oval hole plugging device, which is characterized in that described the One filler is polyester fiber non-woven fabric and polyurethane nucleome, and the polyester fiber non-woven fabric wraps up the polyurethane nucleome, institute It is polyester fiber film to state the second filler.

4. a kind of single riveting according to claim 3, self-adaptation type oval hole plugging device, which is characterized in that described poly- The volume of urethane nucleome is not less than the one third of the waist.

5. a kind of single riveting according to claim 1, self-adaptation type oval hole plugging device, which is characterized in that the bullet Property device (5) includes more interlaced the first springs (51) wound along the main center and second spring (52), described The both ends of first spring (51) are respectively welded in the left disk (2) and the right disk (3), first spring (51) Telescopic direction and the plane where the left disk (2) and the right disk (3) are vertical, and second spring (52) winding is set It sets on first spring (51), the telescopic direction of the second spring (52) is vertical with the first spring (51).

6. a kind of single riveting according to claim 5, self-adaptation type oval hole plugging device, which is characterized in that described the One spring (51) is tensional state, and the second spring (52) is compressive state.