CN214678936U

CN214678936U - Developing line auxiliary structure for forming degradable plugging device

Info

Publication number: CN214678936U
Application number: CN202022899353.3U
Authority: CN
Inventors: 潘湘斌; 赵一甲; 王帆; 胡金鹏; 郭旭英; 王舒洁; 朱云磊; 陈娟; 周文兵
Original assignee: Shanghai Shape Memory Alloy Material Co Ltd
Current assignee: Shanghai Shape Memory Alloy Material Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-11-12
Anticipated expiration: 2030-12-03

Abstract

The utility model discloses a be used for fashioned supplementary structure of development line of degradable plugging device, a serial communication port, including at least one shuttle in the degradable plugging device with the degradable plugging device combines to be a holistic development line, the development line comprises the development coating on development line inner core and its surface. The developing line inner core is a wire material which meets three types of short-term contact and has biocompatibility. The utility model provides an auxiliary molding line that can develop, it both can develop under X ray, nuclear magnetism and CT, also can realize the supplementary shaping of plugging device of different angles through the route of shuttling of difference on the plugging device.

Description

Developing line auxiliary structure for forming degradable plugging device

Technical Field

The utility model relates to a be used for fashioned supplementary structure of development line of degradable plugging device belongs to medical instrument technical field.

Background

Congenital heart disease is the most common congenital malformation, accounting for about 28% of all congenital malformations, and refers to the condition of abnormal anatomical structure caused by the formation of obstacles or abnormal development of the heart and great vessels during embryonic development, or the failure of the closed passage (normal in the fetus) which should be automatically closed after birth. The incidence of congenital heart disease is not small, and accounts for 0.4% -1% of the life of infants, which means that 15-20 ten thousands of patients suffering from congenital heart disease are newly increased every year in China. Congenital heart diseases can be classified into three categories according to the presence or absence of shunting: non-shunting (e.g. pulmonary stenosis, aortic stenosis), left-to-right shunting (e.g. atrial septal defect, ventricular septal defect, patent ductus arteriosus) and right-to-left shunting (e.g. Fallo tetrad, large vessel malposition).

At present, the traditional occluder which is mainly prepared by weaving and shaping nickel-titanium alloy wires as raw materials is widely applied and popularized in the world for 20 years. However, due to the safety of the metal occluder for permanently retaining the heart, such as the influence of the occluder on the heart of children who are growing, long-term follow-up data are still lacking.

Therefore, the search for better degradable materials to manufacture the occluder for treating structural heart disease has become a hot spot of the joint research of interventional therapists, medical material experts and occluder instrument manufacturers. However, since the occluder stent is formed by weaving degradable polymer wires, the occluder stent cannot be developed under X-ray, nuclear magnetic resonance and CT, and can only be guided by means of ultrasonic images in clinical application. Therefore, the development capability of the biodegradable occluder under X-ray, nuclear magnetic resonance and CT is realized, and the restoration and the formation of the biodegradable occluder in a human body after being implanted are assisted, which is a difficult problem for the technicians in the field to solve.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: due to the characteristics of the degradable plugging device material, the degradable plugging device material cannot be developed under X-ray, nuclear magnetism and CT, so that the release and the forming of the plugging device cannot be directly observed through several imaging means such as X-ray, nuclear magnetism and CT in the implantation process under a transthoracic minimally invasive or percutaneous interventional path, and the operation difficulty is increased.

In order to solve the problem, the utility model provides a be used for fashioned development line auxiliary structure of degradable plugging device, a serial communication port, including at least one shuttle in the degradable plugging device with the degradable plugging device combines to be a holistic development line, the development line comprises development line inner core and the development coating on surface thereof. The developing line inner core is a wire material which meets three types of short-term contact and has biocompatibility.

Preferably, the filaments of the development line inner core are non-absorbable or absorbable sutures.

More preferably, the non-absorbable suture is silk, synthetic fibers, natural fibers or metal wire; the absorbable suture is catgut, a pure natural collagen suture, degradable polydioxanone PDO, a polylactic acid PLA suture, a lactide and glycollic acid copolymerization PGLA suture or a polyglycolic acid PGA suture.

Preferably, the developing coating is a coating which can be developed under X-ray, nuclear magnetism or CT, and the material of the developing coating is an ionic iodine-containing aromatic compound, a non-ionic iodine-containing aromatic compound or a coordination polymer containing iodine ions.

Preferably, half of the development lines are thicker in size than the other half.

Preferably, the relative position of the developing line and the degradable occluder is any one of the following positions:

one end of the developing line is exposed from the upper disc of the degradable occluder, and the other end of the developing line passes through any position and the waist part of the upper disc of the occluder in sequence and is exposed from the disc surface of the lower disc;

both ends of the developing line sequentially pass through the upper disc and the waist part of the degradable occluder and are exposed out of the disc surface of the lower disc.

More preferably, the end of the developing line penetrates from one side of the upper disc of the degradable occluder, passes through the waist and then is exposed from the same side of the lower disc surface.

Furthermore, one end or two ends of the two developing lines penetrate through the symmetrical position of the upper disc surface and symmetrically expose from the same side of the lower disc surface after passing through the waist.

The developing line can be artificially pulled to assist the upper disc surface forming and the lower disc surface forming of the degradable occluder or the upper disc surface and the lower disc surface forming at the same time, and is recovered into the sheath tube after being released.

The utility model provides an auxiliary molding line that can develop, it both can develop under X ray, nuclear magnetism and CT, also can realize the supplementary shaping of plugging device of different angles through the route of shuttling of difference on the plugging device.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1) the wire with good biocompatibility ensures the safety of the developing line in human body;

2) the outer developing coating ensures the visibility of the developing line under X-ray, nuclear magnetism and CT in the implantation process;

3) the developing line is a short-term intervention component, conforms to three types of short-term contact filaments with good biocompatibility, and is withdrawn after the upper disc surface and the lower disc surface of the auxiliary occluder are molded, so that the developing line is not left in the body for a long time;

4) the shuttle path of the development lines may take on a variety of forms;

5) different developing line shuttle paths are arranged at different positions of the biodegradable occluder to ensure that the occluder is released and molded in place.

Drawings

Fig. 1-6 are schematic diagrams of different developing line auxiliary structures for forming the degradable occluder provided by the present invention.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The biodegradable occluder is generally made of degradable high polymer materials and comprises an upper disc surface, a lower disc surface and a waist part, wherein the upper end and the lower end of the waist part are respectively connected with the upper disc surface and the lower disc surface. Due to the characteristics of the polymer material, development under X-ray, nuclear magnetic resonance, and CT is not possible.

The utility model provides a be used for fashioned development line auxiliary structure of degradable plugging device, it include one at least shuttle in the degradable plugging device with the degradable plugging device combines for a holistic development line, the development line comprises development line inner core and the development coating on its surface.

As shown in figure 1, two ends of a developing line are symmetrically penetrated in from the left side and the right side of the upper disc, penetrate through the waist part and respectively penetrate out from the corresponding left side and the right side of the disc surface of the lower disc.

As shown in fig. 2, two ends of two developing lines respectively penetrate into the left side and the right side of the upper plate, penetrate through the waist part and respectively penetrate out of the corresponding left side and the right side of the plate surface of the lower plate.

As shown in FIG. 3, both ends of a developing line are inserted into the upper plate from the left side, pass through the waist, and exit from the lower plate from the left side.

As shown in FIG. 4, both ends of a developing line are inserted from the right side of the upper plate, pass through the waist, and exit from the right side of the lower plate.

As shown in fig. 5, both ends of a developing line having a thickness of half each are inserted from the right side of the upper plate, pass through the waist portion, and pass out from the right side of the lower plate.

As shown in fig. 6, both ends of a developing line having a thickness of half each are inserted from the left side of the upper plate, pass through the waist portion, and pass out from the left side of the lower plate.

Claims

1. The development line auxiliary structure is characterized by comprising at least one development line which is shuttled between the degradable occluder and the degradable occluder to form a whole, wherein the development line is composed of a development line inner core and a development coating on the surface of the development line inner core.

2. The visualization line assisting structure for forming a degradable occluder of claim 1, wherein the wire of the visualization line inner core is a non-absorbable or absorbable suture line.

3. The visualization thread assisting structure for forming a degradable occluder according to claim 2, wherein the non-absorbable suture thread is silk, synthetic fiber, natural fiber or metal wire; the absorbable suture is a catgut, a pure natural collagen suture, a degradable polydioxanone, a polylactic acid suture, a lactide-glycolic acid copolymer suture or a polyglycolic acid suture.

4. The development line auxiliary structure for forming the degradable occluder as claimed in claim 1, wherein the development coating is a coating which can be developed under X-ray, nuclear magnetism or CT and is made of ionic iodine-containing aromatic compound, non-ionic iodine-containing aromatic compound or iodine-ion-containing coordination polymer.

5. The visualization line assisting structure for forming a degradable occluder of claim 1, wherein one half of the visualization line is thicker than the other half.

6. The visualization line auxiliary structure for forming a degradable occluder of claim 1, wherein the relative position of the visualization line and the degradable occluder is any one of the following:

7. The developing line auxiliary structure for forming the degradable occluder of claim 6, wherein the end of the developing line penetrates from one side of the upper disk of the degradable occluder and is exposed from the same side of the lower disk after passing through the waist.

8. The auxiliary developing line structure for forming the degradable occluder as claimed in claim 7, wherein one or two ends of two developing lines penetrate from the symmetrical position of the upper disk surface and are symmetrically exposed from the same side of the lower disk surface after passing through the waist.