CN109124839A

CN109124839A - A kind of preceding pretreated medical instrument of cardiac stent implantation

Info

Publication number: CN109124839A
Application number: CN201811097761.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Beijing Xinshilicheng Technology Co.,Ltd.
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2019-01-04
Anticipated expiration: 2038-09-20
Also published as: CN109124839B

Abstract

The invention relates to a medical device for pretreatment before implantation of a cardiac stent. One end of the top cone pipe is internally socketed and fixed with a telescopic sleeve member, and one end of the telescopic sleeve member is externally milled with a threaded shaft; the inner wall of the tail cone pipe is milled with threads, and one end of the fork threaded sleeve is screwed. One end of the thread of the inner wall of the tail cone pipe is inserted, and a threaded shaft is screwed into the thread sleeve of the fork; the other side of the thread of the inner wall of the tail cone pipe is inserted with a tablet; the present invention adopts an extension of one end of the sealing cap with an external thread One end of the external thread extends with a medicament cavity, and the inner space of the medicament cavity accommodates the tablets; the sealing cap is screwed into the tail cone tube through the external thread; The technical means contradicting the top cone tube and the tail cone tube realizes the manufacture of a medical device pretreated before heart stent implantation.

Description

A kind of preceding pretreated medical instrument of cardiac stent implantation

Technical field

Pretreated medical instrument before being implanted into the present invention relates to a kind of cardiac stent.

Background technique

Cardiac stent is also known as coronary stent, is common medical instrument in interventional cardiac procedures, has dredging artery The effect of blood vessel.Main material is stainless steel, Nitinol or cochrome.It appears in earliest in the 1980s, experienced Metallic support, film coating bracket, Soluble Stent Course of development.The initial challenge of research and development coronary stent is, how by it It is made not only tough but also hard.Bracket is tough, then can, Branch Angle biggish coronary artery indefinite by direction；Bracket is hard, then can support The artery stenosis inner cavity firmly expanded, so that it will not bounce back.Support Design engineer exerts in selection and structurally by unremitting Power, solves the problems, such as various, has been successfully produced out first generation arterial bracket finally.When metallic support is successfully used to clinic After treatment, second challenge is how " attack " that overcomes human body to bracket.Originally, bracket was treated as foreign matter by body, branch Impingement is treated as at the position of frame and the contact of artery film.There is wound, human body will repair it.Then, the bracket of artery Place just will appear inflammatory reaction.Many patients, especially diabetes patient occur serious scar tissue around metallic support and increase It is raw.This scar tissue hyperplasia, the artery that can have caused unimpeded when serious is again narrow, or even blocking.Research work Drug and bracket through great efforts, are combined together by person finally, that is, in one layer of medicine film of metal support surface " plating ".It is this After in stenter to implant body, drug will be slowly released, and inhibited scar tissue in bracket surrounding growth, kept coronary artery logical Freely.Worry bracket as foreign matter stimulation local organization misgivings eliminate after, the trick of doctor is just decontroled, the length of bracket with make It is also increased with range.Some patients are even implanted into 2~3 end to end brackets, " expand before and after original narrow positions Combat success ".This through the bracket that drug-treated is crossed is second generation arterial bracket.But this two generations arterial bracket is in " plating at present On " stability of one layer of medicine film and be also short of when being performed the operation, on the aperture adjustment of initial cardiac stent it is some must The technical measures wanted.

Summary of the invention

Pretreated medical instrument before being implanted into the object of the present invention is to provide a kind of cardiac stent.

The present invention solves its above-mentioned technical problem institute, and the following technical solution is employed: a kind of preceding pre- place of cardiac stent implantation The medical instrument of reason, is mainly configured with: addendum cone pipe, tail cone pipe, cardiac stent pipe, telescopic pipe fitting, thread spindle, seal cap, External screw thread, medicament chamber, crotch thread bush, sealing bolt, bolt core, tablet, socket joint is fixed with telescopic in described addendum cone pipe one end Pipe fitting is milled with thread spindle outside described telescopic pipe fitting one end；

Screw thread is milled on the tail cone inside pipe wall, described crotch thread bush one end is screwed into one end of tail cone inside pipe wall screw thread, Thread spindle is screwed in the crotch thread bush；The tail cone inside pipe wall screw thread other side merging has tablet；

The seal cap center is provided with circular hole, has been built into sealing bolt in circular hole, and bolt core is screwed in sealing bolt； Seal cap one end extended spot is equipped with external screw thread, and external screw thread one end extended spot is equipped with medicament chamber, and the intracavitary portion of medicament is empty Between accommodate tablet；The seal cap is screwed by external screw thread in tail cone pipe；

The cardiac stent pipe, which is refuted, to be placed on telescopic pipe fitting, and cardiac stent pipe head and the tail both ends contact at addendum cone pipe respectively Between tail cone pipe；The length of the thread spindle is between 4.7-5.5 times of cardiac stent pipe.

Further, the addendum cone pipe is identical as tail cone pipe diameter.

Further, the diameter of the telescopic pipe fitting is between 1.7-2.5 times of addendum cone pipe.

Further, the bolt in-core sets metal probe, and metal probe and tablet are inconsistent.

Further, antiskid thread is milled in the tail cone pipe outer wall.

Further, the thread spindle advance for each revolution or retreat in crotch thread bush distance be 0.07- 0.13 centimetre.

Further, the outer wall of the addendum cone pipe is socketed with silica gel thin film.

Beneficial effects of the present invention: external screw thread is equipped with using seal cap one end extended spot, external screw thread one end extended spot is equipped with Medicament chamber, and the intracavitary portion's space tablet of medicament；Seal cap is screwed by external screw thread in tail cone pipe；Cardiac stent pipe is refuted It is placed on telescopic pipe fitting, and cardiac stent pipe head and the tail both ends contact at the technology hand between addendum cone pipe and tail cone pipe respectively Section realizes a kind of being made for cardiac stent preceding pretreated medical instrument of implantation.

Detailed description of the invention

Fig. 1 is pretreated medical instrument overall structure figure before a kind of cardiac stent of the present invention is implanted into.

Fig. 2 is pretreated medical instrument core structure chart before a kind of cardiac stent of the present invention is implanted into.

Fig. 3 is pretreated medical instrument hermetic unit structure chart before a kind of cardiac stent of the present invention is implanted into.

Fig. 4 is pretreated medical instrument extensible member part-structure figure before a kind of cardiac stent of the present invention is implanted into.

1- addendum cone pipe in figure, 2- tail cone pipe, 3- cardiac stent pipe, 4- telescopic pipe fitting, 41- thread spindle, 5- seal cap, 51- external screw thread, 52- medicament chamber, 6- crotch thread bush, 7- sealing bolt, 8- bolt core, 9- tablet.

Specific embodiment

1-4 makes a detailed explanation a specific embodiment of the invention with reference to the accompanying drawing.

Embodiment: a kind of preceding pretreated medical instrument of cardiac stent implantation is mainly configured with: addendum cone pipe 1, tail cone pipe 2, cardiac stent pipe 3, telescopic pipe fitting 4, thread spindle 41, seal cap 5, external screw thread 51, medicament chamber 52, crotch thread bush 6, sealing Bolt 7, bolt core 8, tablet 9, socket joint is fixed with telescopic pipe fitting 4, the telescopic pipe fitting 4 one in described 1 one end of addendum cone pipe End is external to be milled with thread spindle 41；

Screw thread is milled on 2 inner wall of tail cone pipe, described 6 one end of crotch thread bush is screwed into the one of 2 inner thread of tail cone pipe It holds, is screwed with thread spindle 41 in the crotch thread bush 6；The 2 inner thread other side of the tail cone pipe merging has tablet 9；

5 center of seal cap is provided with circular hole, has been built into sealing bolt 7 in circular hole, and be screwed with bolt in sealing bolt 7 Core 8；5 one end extended spot of seal cap is equipped with external screw thread 51, and 51 one end extended spot of external screw thread is equipped with medicament chamber 52, and medicine 52 inner space of agent chamber accommodates tablet 9；The seal cap 5 is screwed by external screw thread 51 in tail cone pipe 2；

The cardiac stent pipe 3, which is refuted, to be placed on telescopic pipe fitting 4, and 3 head and the tail both ends of cardiac stent pipe contact at top respectively Between Taper Pipe 1 and tail cone pipe 2；The length of the thread spindle 41 is between 4.7-5.5 times of cardiac stent pipe 3.

The addendum cone pipe 1 is identical as 2 diameter of tail cone pipe.

The diameter of the telescopic pipe fitting 4 is between 1.7-2.5 times of addendum cone pipe 1.

The 8 built-in metal probe of bolt core, and metal probe and tablet 9 are inconsistent.

Antiskid thread is milled on 2 outer wall of tail cone pipe.

The thread spindle 41 advance for each revolution or retreat in crotch thread bush 6 distance be 0.07-0.13 lis Rice.

The outer wall of the addendum cone pipe 1 is socketed with silica gel thin film.

Core of the invention is: telescopic pipe fitting 4 is screwed into or is back-outed by thread spindle 41, can directly adjust top Spacing between Taper Pipe 1 and tail cone pipe 2 is cased with cardiac stent pipe 3 due to refuting on telescopic pipe fitting 4, plants in cardiac stent It, can be by turning tail cone pipe 2, to the initial diameter of cardiac stent pipe 3 be expanded, this straight before entering when pretreatment The effect of diameter fine tuning, referred to as pretreatment before cardiac stent implantation.This measure can make the goodness of fit of implant site improve, Blood vessel is passed through convenient for the later period, and the good condition of bracket offer is provided.

Additionally due to the merging of the 2 inner thread other side of tail cone pipe has tablet 9, the slow release pharmacological property of tablet 9 be can protect The pharmacological property adhered on cardiac stent pipe 3.8 built-in metal probe of bolt core in design, metal probe can plant for later period cardiac stent The pretreated shelling of cardiac stent pipe 3 provides booster action (removing remaining tablet 9) before entering.

The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims

1. A medical device pretreated before implantation of a cardiac stent, the main structure of which is: a top cone tube (1), a tail cone tube (2), a cardiac stent tube (3), a telescopic sleeve member (4), a threaded shaft (41), a sealing cap (5), an external thread (51), a medicine cavity (52), a fork threaded sleeve (6), a sealing bolt (7), a bolt core (8), and a tablet (9), characterized in that : One end of the top cone pipe (1) is internally socketed and fixed with a telescopic sleeve member (4), and one end of the telescopic sleeve member (4) is externally milled with a threaded shaft (41);

The inner wall of the tail cone pipe (2) is milled with threads, one end of the fork threaded sleeve (6) is screwed into one end of the inner wall thread of the tail cone pipe (2), and the fork threaded sleeve (6) is inserted into the inner wall of the tail cone pipe (2). A threaded shaft (41) is screwed; a tablet (9) is placed on the other side of the inner wall thread of the tail cone tube (2);

The sealing cap (5) is provided with a circular hole in the center, a sealing bolt (7) is inserted in the circular hole, and a core (8) is screwed into the sealing bolt (7); the sealing cap (5) ) an extension of one end is provided with an external thread (51), an extension of one end of the external thread (51) is provided with a medicament cavity (52), and the inner space of the medicament cavity (52) accommodates the tablet (9); the sealing cap (5) Screw into the tail cone pipe (2) through the external thread (51);

The cardiac stent tube (3) is sleeved on the telescopic sleeve member (4), and the head and tail ends of the cardiac 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 that of the heart stent tube (3).

2 . The medical device for pretreatment before implantation of a cardiac stent according to claim 1 , wherein the top cone tube ( 1 ) and the tail cone tube ( 2 ) have the same diameter. 3 .

3. A medical device for pre-treatment of cardiac stent implantation according to claim 1, characterized in that the diameter of the telescopic sleeve member (4) is between 1.7 and 2.5 times the diameter of the top cone tube (1). .

4 . The medical device for pretreatment of cardiac stent implantation according to claim 1 , wherein the plug core ( 8 ) has a built-in metal probe, and the metal probe is in conflict with the tablet ( 9 ). 5 .

5 . The medical device for pretreatment before implantation of a cardiac stent according to claim 1 , wherein anti-skid threads are milled on the outer wall of the tail cone tube ( 2 ). 6 .

6 . The medical device for pretreatment before implantation of a cardiac stent according to claim 1 , wherein the threaded shaft ( 41 ) advances or retreats by a distance from the fork threaded sleeve ( 6 ) for each rotation of the threaded shaft ( 41 ). 7 . 0.07-0.13 cm.

7 . The medical device for pretreatment before implantation of a cardiac stent according to claim 1 , characterized in that the outer wall of the top cone tube ( 1 ) is sleeved with a silica gel film. 8 .