A medical device for pre-treatment of cardiac stents before implantation

Abstract

The present invention relates to a medical device for pre-treatment of a heart stent before implantation. A telescopic sleeve piece is fixed in a socket at one end of the top cone tube, and a threaded shaft is milled on the outside of one end of the telescopic sleeve piece; a thread is milled on the inner wall of the tail cone tube, and one end of the fork frame threaded sleeve is screwed into one end of the thread of the inner wall of the tail cone tube, and a threaded shaft is screwed into the fork frame threaded sleeve; a tablet is placed on the other side of the thread of the inner wall of the tail cone tube; the present invention adopts a sealing cap with an external thread at one end extending therefrom, a medicine cavity at one end extending therefrom, and the internal space of the medicine cavity accommodates the tablet; the sealing cap is screwed into the tail cone tube through the external thread; the heart stent tube is sleeved on the telescopic sleeve piece, and the head and tail ends of the heart stent tube are respectively against the top cone tube and the tail cone tube, thereby realizing the manufacture of a medical device for pre-treatment of a heart stent before implantation.

Description

Technical Field

[0001] The invention relates to a medical device for pre-processing a heart stent before implantation. Background Art

[0002] Heart stents, also known as coronary artery stents, are commonly used medical devices in cardiac interventional surgery and have the function of clearing arterial blood vessels. The main materials are stainless steel, nickel-titanium alloy or cobalt-chromium alloy. They first appeared in the 1980s and have gone through the development process of metal stents, coated stents, and soluble stents. The initial challenge in the development of coronary artery stents was how to make them both tough and hard. If the stent is tough, it can pass through coronary arteries with uncertain directions and large branching angles; if the stent is hard, it can support the expanded narrow artery lumen so that it will not retract. After unremitting efforts in material selection and construction, stent design engineers have solved various problems and finally successfully produced the first generation of arterial stents. When metal stents are successfully used in clinical treatment, the second challenge is how to overcome the body's "attack" on the stent. It turns out that the body regards the stent as a foreign body and the contact area between the stent and the arterial membrane as a trauma area. With trauma, the human body needs to repair it. As a result, an inflammatory reaction will occur at the stent of the artery. Many patients, especially diabetics, have severe scar tissue hyperplasia around the metal stent. This scar tissue proliferation can cause the unobstructed artery to narrow again or even block in severe cases. After hard work, researchers have finally combined drugs and stents, that is, "coating" a layer of drug film on the surface of the metal stent. After the stent is implanted in the body, the drug will be slowly released to inhibit the growth of scar tissue around the stent and keep the coronary artery unobstructed. After the concern that the stent will stimulate local tissue as a foreign body is eliminated, doctors have freed up their hands and feet, and the length and scope of use of the stent have also increased. Some patients even implant 2 to 3 stents connected end to end to "expand the results" in front and behind the original narrow part. This drug-treated stent is the second-generation arterial stent. However, at present, this second-generation arterial stent lacks some necessary technical measures in terms of the stability of the "coating" layer of drug film and the initial aperture adjustment of the heart stent during surgery. Summary of the invention

[0003] The purpose of the invention is to provide a medical device for pre-processing a heart stent before implantation.

[0004] The present invention solves the above-mentioned technical problems by adopting the following technical solutions: a medical device for pre-treatment before implantation of a heart stent, which mainly comprises: a top cone tube, a tail cone tube, a heart stent tube, a telescopic sleeve, a threaded shaft, a sealing cap, an external thread, a medicine chamber, a fork frame threaded sleeve, a sealing plug, a plug core, and a tablet, wherein a telescopic sleeve is fixed with a socket at one end of the top cone tube, and a threaded shaft is milled on the outside of one end of the telescopic sleeve;

[0005] The inner wall of the tail cone tube is milled with threads, one end of the fork frame thread sleeve is screwed into one end of the thread on the inner wall of the tail cone tube, and a threaded shaft is screwed into the fork frame thread sleeve; a tablet is placed on the other side of the thread on the inner wall of the tail cone tube;

[0006] A circular hole is opened at the center of the sealing cap, a sealing plug is inserted into the circular hole, and a plug core is screwed into the sealing plug; an external thread is provided at one end of the sealing cap, a medicine cavity is provided at one end of the external thread, and the internal space of the medicine cavity accommodates tablets; the sealing cap is screwed into the tail cone tube through the external thread;

[0007] The heart stent tube is sleeved on the telescopic sleeve, and the head and tail ends of the heart stent tube are respectively against the top cone tube and the tail cone tube; the length of the threaded shaft is between 4.7-5.5 times of the heart stent tube.

[0008] Furthermore, the top cone tube and the tail cone tube have the same diameter.

[0009] Furthermore, the diameter of the telescopic sleeve is between 1.7 and 2.5 times that of the top cone tube.

[0010] Furthermore, the plug core has a built-in metal probe, and the metal probe contacts the tablet.

[0011] Furthermore, an anti-skid thread is milled on the outer wall of the tail cone tube.

[0012] Furthermore, the distance that the threaded shaft advances or retreats relative to the fork frame threaded sleeve per rotation is 0.07-0.13 cm.

[0013] Furthermore, the outer wall of the top cone tube is sleeved with a silicone film.

[0014] The beneficial effects of the present invention are as follows: an external thread is provided at an extension of one end of the sealing cap, a medicine cavity is provided at an extension of one end of the external thread, and the internal space of the medicine cavity accommodates tablets; the sealing cap is screwed into the tail cone tube through the external thread; the heart stent tube is sleeved on the telescopic sleeve member, and the head and tail ends of the heart stent tube are respectively abutted between the top cone tube and the tail cone tube, thereby realizing the manufacture of a medical device for pre-treatment before implantation of a heart stent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall structural diagram of a medical device for pre-treatment of a heart stent before implantation according to the present invention.

[0016] Figure 2 This is a structural diagram of the core part of a medical device for pre-treatment of a heart stent before implantation according to the present invention.

[0017] Figure 3This is a structural diagram of the sealing part of a medical device for pretreatment before implantation of a heart stent according to the present invention.

[0018] Figure 4 This is a partial structural diagram of a telescopic component of a medical device for pretreatment before implantation of a heart stent according to the present invention.

[0019] In the figure, 1-top cone tube, 2-tail cone tube, 3-heart stent tube, 4-telescopic sleeve, 41-threaded shaft, 5-sealing cap, 51-external thread, 52-medicament chamber, 6-fork frame thread sleeve, 7-sealing plug, 8-plug core, 9-tablet. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 A detailed description is given of the specific implementation modes of the present invention.

[0021] Embodiment: A medical device for pretreatment before implantation of a heart stent, which mainly comprises: a top cone tube 1, a tail cone tube 2, a heart stent tube 3, a telescopic sleeve 4, a threaded shaft 41, a sealing cap 5, an external thread 51, a medicine chamber 52, a fork frame threaded sleeve 6, a sealing plug 7, a plug core 8, and a tablet 9. The telescopic sleeve 4 is fixed with a socket at one end of the top cone tube 1, and a threaded shaft 41 is milled on the outside of one end of the telescopic sleeve 4.

[0022] The inner wall of the tail cone tube 2 is milled with threads, one end of the fork frame threaded sleeve 6 is screwed into one end of the inner wall thread of the tail cone tube 2, and a threaded shaft 41 is screwed into the fork frame threaded sleeve 6; a tablet 9 is placed on the other side of the inner wall thread of the tail cone tube 2;

[0023] The sealing cap 5 has a circular hole at its center, a sealing plug 7 is inserted into the circular hole, and a plug core 8 is screwed into the sealing plug 7; an external thread 51 is provided at one end of the sealing cap 5, and a medicine cavity 52 is provided at one end of the external thread 51, and the internal space of the medicine cavity 52 accommodates the tablets 9; the sealing cap 5 is screwed into the tail cone tube 2 through the external thread 51;

[0024] The heart stent tube 3 is sleeved on the telescopic sleeve 4 , and the head and tail ends of the heart stent tube 3 are respectively in contact between the top cone tube 1 and the tail cone tube 2 ; the length of the threaded shaft 41 is between 4.7-5.5 times of the heart stent tube 3 .

[0025] The top cone tube 1 and the tail cone tube 2 have the same diameter.

[0026] The diameter of the telescopic sleeve 4 is between 1.7 and 2.5 times that of the top cone tube 1 .

[0027] The plug core 8 has a built-in metal probe, and the metal probe contacts the tablet 9 .

[0028] The outer wall of the tail cone tube 2 is milled with anti-skid threads.

[0029] The distance that the threaded shaft 41 advances or retreats relative to the fork frame threaded sleeve 6 for each rotation is 0.07-0.13 cm.

[0030] The outer wall of the top cone tube 1 is sleeved with a silicone film.

[0031] The core of the present invention is that the telescopic sleeve 4 can be screwed in or out through the threaded shaft 41 to directly adjust the spacing between the top cone tube 1 and the tail cone tube 2. Since the telescopic sleeve 4 is sleeved with a heart stent tube 3, the tail cone tube 2 can be twisted to expand the initial diameter of the heart stent tube 3 during pretreatment before heart stent implantation. This diameter fine-tuning effect is called pretreatment before heart stent implantation. This measure can improve the fit of the implantation site and provide good conditions for later access to blood vessels to place stents.

[0032] In addition, because a tablet 9 is placed on the other side of the inner wall thread of the tail cone tube 2, the slowly released medicinal properties of the tablet 9 can protect the medicinal properties attached to the heart stent tube 3. In the design, the plug core 8 has a built-in metal probe, which can provide auxiliary effect for the shelling of the heart stent tube 3 pre-treated before the heart stent implantation (removing the remaining tablet 9).

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A medical device for pre-treatment of a heart stent before implantation, the main structure of which is: a top cone tube (1), a tail cone tube (2), a heart stent tube (3), a telescopic sleeve (4), a threaded shaft (41), a sealing cap (5), an external thread (51), a medicine chamber (52), a fork frame thread sleeve (6), a sealing plug (7), a plug core (8), and a tablet (9), wherein: A telescopic sleeve member (4) is fixed in a socket at one end of the top cone tube (1), and a threaded shaft (41) is milled on the outside of one end of the telescopic sleeve member (4); The inner wall of the tail cone tube (2) is milled with threads, one end of the fork frame threaded sleeve (6) is screwed into one end of the inner wall thread of the tail cone tube (2), and a threaded shaft (41) is screwed into the fork frame threaded sleeve (6); a tablet (9) is placed on the other side of the inner wall thread of the tail cone tube (2); The sealing cap (5) has a circular hole at its center, a sealing plug (7) is inserted into the circular hole, and a plug core (8) is screwed into the sealing plug (7); an external thread (51) is provided at one end of the sealing cap (5), a medicine cavity (52) is provided at one end of the external thread (51), and the internal space of the medicine cavity (52) accommodates the tablets (9); the sealing cap (5) is screwed into the tail cone tube (2) via the external thread (51); The heart stent tube (3) is sleeved on the telescopic sleeve (4), and the head and tail ends of the heart stent tube (3) are respectively in contact between the top cone tube (1) and the tail cone tube (2); the length of the threaded shaft (41) is between 4.7 and 5.5 times that of the heart stent tube (3); the top cone tube (1) and the tail cone tube (2) have the same diameter; the plug core (8) has a built-in metal probe, and the metal probe is in contact with the tablet (9); The telescopic sleeve member (4) is screwed in or out via a threaded shaft (41) to adjust the distance between the top cone tube (1) and the tail cone tube (2), and the initial diameter of the heart stent tube (3) is expanded by screwing the tail cone tube (2).

2. A medical device for pre-treatment of a cardiac stent before implantation according to claim 1, characterized in that The outer wall of the tail cone tube (2) is milled with anti-slip threads.

3. A medical device for pre-treatment of a cardiac stent before implantation according to claim 1, characterized in that The distance that the threaded shaft (41) moves forward or backward relative to the fork frame threaded sleeve (6) is 0.07-0.13 cm per rotation.

4. A medical device for pre-treatment of a cardiac stent before implantation according to claim 1, characterized in that The outer wall of the top cone tube (1) is sleeved with a silicone film.

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