CN111358511A - Conveying device for atrial septal defect plugging - Google Patents

Abstract

The invention provides a delivery device for atrial septal defect closure, comprising a long catheter, one end of the long catheter is fixedly connected with a leak-proof joint, and the rear end of the leak-proof joint is connected with the long catheter through a connecting pipe The conversion joints communicated with each other, the inside of the long conduit is inserted with a free-moving inner core, the back end of the conversion joint is fixedly provided with a return joint, and the end of the return joint is fixedly provided with an operating handle, the An installation hole is opened on the outer wall of the bottom of the return joint, and a stop valve is fixedly installed in the inside of the installation hole, and the bottom end of the stop valve is connected with a return pipe. The invention can measure the pressure and flow rate at the target position, which is helpful for judging the release environment of the occluder. The material of the plurality of joints is ABS, which is very easy to implement in production and processing, facilitates the release of the occluder, and at the same time makes the inner core reliable. The occluder is driven to reach the designated occlusion position, which improves the safety of the device for patient operation.

Description

A delivery device for atrial septal defect closure

technical field

The invention relates to the field of medical devices, in particular to a delivery device for sealing atrial septal defect.

Background technique

The known occluder delivery device is a special device used to deliver an occluder for interventional therapy of congenital heart disease.

For the structure of the heart and large blood vessels, the measurement of pressure and flow rate is of great significance, which can help to judge the function of the heart and blood vessels, as well as the occlusion effect, while the existing occluder delivery device has no structure for measuring pressure and flow rate. , Due to the effect of blood pressure in the body, the effect of backflow cannot be achieved, and the delivery effect of the occluder is not good.

Therefore, there is a need to invent a delivery device for atrial septal defect closure that is capable of measuring pressure and flow velocity at a target site.

SUMMARY OF THE INVENTION

In view of this, an object of the present invention is to provide a delivery device capable of measuring the pressure and flow rate at a target location for atrial septal defect closure.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A delivery device for sealing atrial septal defect, comprising a long catheter, one end of the long catheter is fixedly connected with a leak-proof joint, and the rear end of the leak-proof joint is connected with the long catheter through a connecting pipe The conversion joint, the inside of the long conduit is inserted with a freely moving inner core, the inner core is a hollow structure, and the inner core is inserted with a pressure guide wire, and the rear end of the conversion joint is fixedly provided with a return flow A joint, the end of the return joint is fixedly provided with an operating handle, an installation hole is opened on the outer wall of the bottom of the return joint, and a stop valve is fixedly installed in the inside of the installation hole, and the bottom end of the stop valve is connected with a return pipe, And the return pipe is communicated with the long conduit, the end of the return pipe away from the return joint is fixedly installed with a tee joint, and the two free ends of the tee joint are internally plugged with sealing plugs.

Further, one end of the inner core is fixedly provided with a threaded connection head, and a threaded sleeve is threadedly sleeved on the outer wall of the threaded connection head, and a fixed connection is formed between the threaded sleeve and the occluder body.

Further, a double-threaded structure is adopted between the threaded connection head and the threaded sleeve.

Further, the long conduit is made of polytetrafluoroethylene containing 25% barium sulfate, and the inner core is made of polyethylene containing 15% barium sulfate.

Further, the return pipe is made of polyethylene material, and the leak-proof joint, the conversion joint, the return joint and the three-way joint are made of ABS material.

Further, the inner diameter of the inner core is 0.5-0.6 mm, the diameter of the pressure guide wire is 0.3-0.4 mm, and the inner diameter of the long catheter is 0.6-0.7 mm.

The beneficial effects of the present invention are: (1) through the pressure guide wire set, the pressure guide wire is squeezed by the liquid inside the blood vessel, so that the pressure guide wire can measure the pressure and flow rate at the target position, thereby helping to judge the occlusion (2) Through the set return pipe and the three-way joint, blood is injected into the interior of the return pipe, which can timely deliver blood to the patient's blood vessels, so that the patient has normal life characteristics, and improves the device's ability to treat the patient. Operational safety; (3) During use, the leak-proof joint and globe valve have significantly improved the sealing effect and solved the leakage defect. The material of many joints is ABS, as long as the injection mold is opened, the production and processing are carried out. It is very easy to get up; (4) It is convenient to release the occluder through the provided threaded sleeve and threaded connector, and at the same time, the inner core can reliably drive the occluder to reach the designated blocking position.

Description of drawings

FIG. 1 is a schematic structural diagram of a delivery device for atrial septal defect closure proposed by the present invention.

FIG. 2 is a schematic structural diagram of a return joint and an inner core of a delivery device for atrial septal defect closure proposed by the present invention.

3 is a schematic diagram of the connection structure between the occluder and the inner core of a delivery device for atrial septal defect closure proposed by the present invention.

Description of reference numbers:

1-long conduit; 2-leak-proof joint; 3-conversion joint; 4-inner core; 5-return joint; -6 operating handle; 7-return pipe; 8-three-way joint; 9-stop valve; 10-thread Connector; 11-pressure guide wire; 12-threaded sleeve; 13-occluder body.

Detailed ways

Below in conjunction with the accompanying drawings and specific embodiments, the present invention will be further described as follows:

As shown in FIG. 1 to FIG. 3 , a delivery device for atrial septal defect closure provided by the present invention includes a long catheter 1, the long catheter 1 is a hollow structure, and both ends of the long catheter 1 are connected, and the long catheter 1 has a hollow structure. One end is fixedly connected with a leak-proof joint 2, which adopts a double-threaded structure, which has a good leak-proof effect. A free-moving inner core 4 is inserted into the catheter 1, the inner core 4 is a hollow structure, and a pressure guide wire 11 is inserted into the inner core 4, and the pressure guide wire 11 can measure the pressure and flow rate at the target position, thereby It is helpful to judge the release environment of the occluder. The inner core 4 can slide horizontally inside the long catheter 1. The back end of the conversion joint 3 is fixed with a return joint 5, and the end of the return joint 5 is fixed with an operating handle 6, which is convenient for People operate, an installation hole is opened on the outer wall of the bottom of the return joint 5, and the inside of the installation hole is fixedly installed with a stop valve 9, the bottom end of the stop valve 9 is connected with a return pipe 7, and the return pipe 7 communicates with the long conduit 1. , the liquid substance between the return pipe 7 and the long catheter 1 is cut off by the cut-off valve 9, the interior of the return pipe 7 can transport blood, so as to ensure the blood balance in the human body, the end of the return pipe 7 away from the return joint 5 is fixedly installed The joint 8 is inserted into the two free ends of the three-way joint 8, and a sealing block is inserted into the inside, and the blood sample bottle and the return pipe 7 can be connected by removing the sealing block.

The working principle of the present invention is as follows: when in use, the operator puts the long catheter 1 into the heart blood vessel of the patient, and then extends the inner core 4 into the interior of the long catheter 1, and the inner core 4 can be horizontal along the length direction of the long catheter 1 Moving, the threaded connector 10 at the end of the inner core 4 is threadedly connected to the threaded sleeve 12 on the occluder 13, and then the return joint 5 is fixed on the rear end of the conversion joint 3. The operator holds the operating handle 6, and the The device is controlled. At the same time, the operator can connect the three-way connector 8 to the blood bottle, open the shut-off valve 9, and timely deliver blood to the patient through the long catheter 1. After the occluder body 13 is delivered to the target position, it can be The pressure guide wire 11 enters through the inner core 4, passes through the occluder body 13, and measures the pressure and flow rate at the target position, so as to help determine the release environment of the occluder, and finally passes through the threaded connector 10 and the threaded sleeve 12. Separation, the release of the occluder body 13 is completed, and a better occlusion effect is achieved.

As can be seen from the above description, the present invention has the following beneficial effects: (1) The pressure guide wire is pressed by the liquid inside the blood vessel, so that the pressure guide wire can measure the pressure and flow rate at the target position, so as to have It helps to judge the release environment of the occluder; (2) Through the set return pipe and three-way joint, blood is injected into the interior of the return pipe, which can timely deliver blood to the blood vessels of the patient, so that the patient has normal life characteristics and improves the quality of life. (3) During the use process, the leak-proof joint and the shut-off valve have significantly improved the sealing effect and solved the leakage defect. The material of many joints is ABS, as long as the injection mold is opened, it is Yes, the production and processing are very easy to implement; (4) The threaded sleeve and the threaded connector are provided to facilitate the release of the occluder, and at the same time, the inner core can reliably drive the occluder to the designated blocking position.

Further, one end of the inner core 4 is fixedly provided with a threaded connection head 10, and the outer wall of the threaded connection head 10 is threadedly sleeved with a threaded sleeve 12, and a fixed connection is formed between the threaded sleeve 12 and the occluder body 13, which is convenient for blocking The connection of the occluder body 13 is fixed, so as to achieve reliable delivery of the occluder body 13 .

Further, a double-threaded structure is adopted between the threaded connection head 10 and the threaded sleeve 12 .

It can be seen from the above description that the connection of the double-threaded structure can enhance the reasonable design of the occluder, and at the same time facilitate the release of the occluder body.

Further, the long catheter 1 is made of polytetrafluoroethylene containing 25% barium sulfate, and the inner core 4 is made of polyethylene containing 15% barium sulfate, and the materials are readily available and easy to produce.

Further, the return pipe 7 is made of polyethylene material, and the leak-proof joint 2, the conversion joint 3, the return joint 5 and the three-way joint 8 are all made of ABS material.

Further, the inner diameter of the inner core 4 is 0.5-0.6 mm, the diameter of the pressure guide wire 11 is 0.3-0.4 mm, and the inner diameter of the long catheter 1 is 0.6-0.7 mm, which can ensure that the inner core 4 shuttles inside the long catheter 1 , and at the same time, the pressure guide wire 11 can be moved inside the inner core 4 .

Hereinafter, several preferred embodiments or application embodiments are listed to help those skilled in the art to better understand the technical content of the present invention and the technical contributions made by the present invention relative to the prior art:

Example 1

A delivery device for sealing atrial septal defect, comprising a long catheter 1, the long catheter 1 is a hollow structure, and the two ends of the long catheter 1 are connected, and one end of the long catheter 1 is fixedly connected with a leak-proof joint 2, which adopts a double-threaded structure. , play a better leak-proof effect, the rear end of the leak-proof joint 2 is connected with a conversion joint 3 connected with the long conduit 1 through the connecting pipe, and the interior of the long conduit 1 is inserted with a freely moving inner core 4 , the inner core 4 is a hollow structure, and a pressure guide wire 11 is inserted into the inner core 4. The pressure guide wire 11 can measure the pressure and flow rate at the target position, thereby helping to determine the release environment of the occluder. The inner core 4 It can slide horizontally inside the long conduit 1. The back end of the conversion joint 3 is fixed with a return joint 5, and the end of the return joint 5 is fixed with an operating handle 6, which is convenient for people to operate. A cut-off valve 9 is fixedly installed inside the installation hole, the bottom end of the cut-off valve 9 is connected with a return pipe 7, and the return pipe 7 is communicated with the long pipe 1, and the return pipe 7 and the long pipe 1 are connected to the return pipe 7 and the long pipe 1 through the cut-off valve 9. The liquid material between the two ends is cut off, and the inside of the return pipe 7 can transport blood, so as to ensure the blood balance in the human body. A sealing block is inserted inside, and removing the sealing block can make the connection between the blood sample bottle and the return pipe 7 .

One end of the inner core 4 is fixedly provided with a threaded connection head 10, and a threaded sleeve 12 is threadedly sleeved on the outer wall of the threaded connection head 10. The connection of the main body 13 is fixed, so as to realize the reliable delivery of the occluder main body 13; a double-threaded structure is adopted between the threaded connector 10 and the threaded sleeve 12; the long catheter 1 is made of polytetrafluoroethylene containing 25% barium sulfate, and The inner core 4 is made of polyethylene containing 15% barium sulfate, which is easy to obtain and easy to produce; the return pipe 7 is made of polyethylene material, and the leak-proof joint 2, the conversion joint 3, the return joint 5 and the tee joint 8 are all made of polyethylene. Made of ABS material; the inner diameter of the inner core 4 is 0.5-0.6mm, the diameter of the pressure guide wire 11 is 0.3-0.4mm, and the inner diameter of the long catheter 1 is 0.6-0.7mm, which can ensure that the inner core 4 is inside the long catheter 1. Shuttle, and at the same time, the pressure guide wire 11 can be moved inside the inner core 4 .

In summary, the present invention provides a delivery device for atrial septal defect closure, through the pressure guide wire provided, the pressure guide wire is squeezed by the liquid inside the blood vessel, so that the pressure guide wire can measure the target position. The pressure and flow rate of the occluder can help to determine the release environment of the occluder. Through the set return pipe and three-way joint, blood is injected into the interior of the return pipe, which can timely deliver blood to the patient's blood vessels, so that the patient has normal The life feature improves the safety of the device for the operation of the patient; during use, the leak-proof joint and the shut-off valve, the sealing effect is obviously improved, and the leakage defect is solved. The material of many joints is ABS, as long as the injection mold is opened That is, the production and processing are very easy to implement; the threaded sleeve and the threaded connection head are provided to facilitate the release of the occluder, and at the same time, the inner core can reliably drive the occluder to reach the designated blocking position.

The present invention has been described by the above-mentioned related embodiments and the accompanying drawings, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, modifications and equivalent arrangements included within the spirit and scope of the claims are intended to be included within the scope of the invention.

Claims (6)

1. a delivery device for atrial septal defect sealing, characterized in that it comprises a long conduit, one end of the long conduit is fixedly connected with a leak-proof joint, and the rear end of the leak-proof joint is connected with a A conversion joint that communicates between long conduits, a freely moving inner core is inserted into the long conduit, the inner core is a hollow structure, and a pressure guide wire is inserted into the inner core. The back end is fixedly provided with a return joint, the end of the return joint is fixed with an operating handle, an installation hole is opened on the outer wall of the bottom of the return joint, and a cut-off valve is fixedly installed inside the installation hole, and the bottom of the cut-off valve is The end is connected with a return pipe, and the return pipe is communicated with the long conduit. One end of the return pipe away from the return joint is fixedly installed with a three-way joint, and two free ends of the three-way joint are internally plugged with sealing plugs. 2 . The delivery device for atrial septal defect closure according to claim 1 , wherein one end of the inner core is fixedly provided with a threaded connector, and the outer wall of the threaded connector is threadedly sleeved with threads. 3 . The threaded sleeve forms a fixed connection with the occluder body. 3 . The delivery device for atrial septal defect closure according to claim 2 , wherein a double-threaded structure is adopted between the threaded connection head and the threaded sleeve. 4 . 4. The delivery device for atrial septal defect closure according to claim 1, wherein the long catheter is made of polytetrafluoroethylene containing 25% barium sulfate, and the inner core is made of 15% barium sulfate of polyethylene. 5. The delivery device for atrial septal defect plugging according to claim 1, wherein the return pipe is made of polyethylene material, and the leak-proof joint, the conversion joint, the return joint and the tee joint are all made of polyethylene. Made of ABS material. 6. The delivery device for atrial septal defect closure according to claim 1, wherein the inner diameter of the inner core is 0.5-0.6 mm, and the diameter of the pressure guide wire is 0.3-0.4 mm, and the inner diameter of the inner core is 0.5-0.6 mm. The inner diameter of the long catheter is 0.6 to 0.7 mm.

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