阅读说明：本技术 一种冠状动脉支架植入手术的扩张管 (Dilating tube for coronary artery stent implantation operation ) 是由 胡文志 于 2021-07-26 设计创作，主要内容包括：一种冠状动脉支架植入手术的扩张管,包括扩张管本体,扩张管本体为中空结构,扩张管本体包括头部、中间管和尾部,头部连接中间管,中间管连接尾部；尾部包括尾部上端、尾部下端和尾部中间体,尾部下端包括卡口部,中间管包括第一弯曲和第二弯曲,头部包括头部顶端、头部尾端、过渡段。因为本发明的过渡段表面涂覆的亲水涂层具有良好的亲水性能,改善了通过复杂的、迂曲病变血管的可输送性；扩张管置于造影导丝和指引导管之间,使得造影导丝和指引导管间不存在缝隙,没有间隔,不易刮伤血管,降低了手臂痉挛、肿胀的几率,减少桡动脉损伤；配备了该扩张管的指引导管的输送速度大于普通临床上的输送速度,增加效率的同时也减少了产生并发症的风险。(An expansion tube for coronary artery stent implantation operation comprises an expansion tube body, wherein the expansion tube body is of a hollow structure and comprises a head part, a middle tube and a tail part, the head part is connected with the middle tube, and the middle tube is connected with the tail part; the tail comprises a tail upper end, a tail lower end and a tail intermediate body, the tail lower end comprises a bayonet part, the intermediate pipe comprises a first bend and a second bend, and the head comprises a head top end, a head tail end and a transition section. Because the hydrophilic coating coated on the surface of the transition section has good hydrophilic performance, the transportability of the blood vessel through complex and tortuous lesions is improved; the dilation tube is arranged between the radiography guide wire and the guide catheter, so that no gap exists between the radiography guide wire and the guide catheter, no interval exists, blood vessels are not easily scratched, the probability of arm spasm and swelling is reduced, and the radial artery injury is reduced; the delivery speed of the guide catheter provided with the dilation tube is higher than that of the common clinical delivery speed, so that the efficiency is improved, and the risk of generating complications is reduced.)

1. An expanding tube for coronary artery stent implantation operation, which is characterized in that: the expansion pipe comprises an expansion pipe body, wherein the expansion pipe body is of a hollow structure and comprises a head part, a middle pipe and a tail part which are integrally connected, and the middle pipe is positioned between the head part and the tail part; the tail part comprises a tail part upper end, a tail part lower end and a tail part intermediate body, the tail part lower end comprises a bayonet part, the intermediate pipe comprises a first bend and a second bend, the first bend is connected with the second bend, and the first bend is positioned above the second bend along the vertical direction of the expansion pipe body; the head comprises a head top end, a head tail end and a transition section; the middle pipe is of a cylindrical hollow structure, and the head part is a cone; the external diameter of the middle pipe is equal to the internal diameter of the guide catheter which is matched and connected with the middle pipe; the head tail end is connected with the transition section, the inner diameter of the head top end is equal to the nominal diameter of the contrast guide wire which is matched and connected with the head top end, and the outer diameter of the transition section is equal to the inner diameter of the guide catheter which is matched and connected with the transition section.

2. The stent for coronary artery stent implantation surgery as set forth in claim 1, wherein: the surface of the transition section is coated with a hydrophilic coating, and the hydrophilic coating is distributed on the surface of the transition section and surrounds a circle.

3. The stent for coronary artery stent implantation surgery as set forth in claim 1, wherein: protruding structures are arranged on the upper side and the lower side of the upper end of the tail part, and the protruding structures are trapezoidal.

4. The stent for coronary artery stent implantation surgery as set forth in claim 1, wherein: the bayonet part is a circular structure formed by four side bodies, a gap is arranged between the four side bodies, and the bayonet part is positioned in the middle of the lower end of the tail part.

5. The stent for coronary artery stent implantation surgery as set forth in claim 1, wherein: the lower end of the tail part is of a circular groove structure, and the outer edge of the tail part is provided with an opening.

6. The stent for coronary artery stent implantation surgery as set forth in claim 1, wherein: the tail intermediate body is provided with a strip-shaped body, the middle of the strip-shaped body is rectangular, two ends of the strip-shaped body are triangular, and the top end of the triangle is arc-shaped.

Technical Field

The invention relates to the technical field of medical instruments, in particular to an expansion tube for coronary artery stent implantation.

Background

The coronary artery stent implantation is also called as a cardiac stent operation, when the cardiac stent operation is carried out, the radial artery of the right hand of a patient is mostly selected for puncture, a skin-breaking knife is firstly used for opening a small opening in the puncture process, then the puncture needle is used for puncture, after blood returns, the puncture is successful, and a puncture guide wire is fed; the puncture needle is pulled out, and the sheath tube (comprising an inner sheath and an outer sheath) is placed along the puncture guide wire; then the puncture guide wire and the inner sheath are pulled out, the outer sheath is left in the blood vessel, and a channel is established for the subsequent guide wire and the catheter to enter; the contrast guide wire and the guide catheter are fed into the blood vessel through the outer sheath, the guide wire is not a common metal wire, but a guide wire which can be flexibly bent and steered by the operation of a doctor passes through a complicated blood vessel path and runs reversely from a radial artery to a great blood vessel; the guide catheter can meander in the blood vessel along the path of the guide wire until reaching the coronary ostia;

at present, the specifications and sizes of contrast guide wires and guide blood vessels existing in the market are determined, when a guide catheter enters a radial artery along the contrast guide wire and passes through the position 5-8 cm below the elbow joint of the radial artery, the radial artery is very easy to spasm and shrink, in the prior art, a certain gap exists between the contrast guide wire and the guide catheter, the gap can form a 'razor effect' on the radial artery, the guide catheter causes injury and blood seepage of the blood vessels in the advancing process, so that arm spasm and swelling are caused, and nerves can be pressed seriously to cause radial nerve necrosis and hand function loss, so that the heart intervention operation serious complication is caused; therefore, there is a need for a dilation tube between a contrast guidewire and a guiding catheter to address this problem.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an expansion tube for coronary artery stent implantation.

In order to achieve the purpose, the invention adopts the following technical scheme: an expansion tube for coronary artery stent implantation operation comprises an expansion tube body, wherein the expansion tube body is of a hollow structure and comprises a head part, a middle tube and a tail part which are integrally connected, and the middle tube is positioned between the head part and the tail part; the tail part comprises a tail part upper end, a tail part lower end and a tail part intermediate body, the tail part lower end comprises a bayonet part, the intermediate pipe comprises a first bend and a second bend, the first bend is connected with the second bend, and the first bend is positioned above the second bend along the vertical direction of the expansion pipe body; the head comprises a head top end, a head tail end and a transition section; the middle pipe is of a cylindrical hollow structure, and the head part is a cone; the external diameter of the middle pipe is equal to the internal diameter of the guide catheter which is matched and connected with the middle pipe; the head tail end is connected with the transition section, the inner diameter of the head top end is equal to the nominal diameter of the contrast guide wire which is matched and connected with the head top end, and the outer diameter of the transition section is equal to the inner diameter of the guide catheter which is matched and connected with the transition section.

Preferably, the surface of the transition section is coated with a hydrophilic coating, and the hydrophilic coating is distributed on the surface of the transition section around a circle.

Preferably, the upper side and the lower side of the upper end of the tail part are provided with protruding structures, and the protruding structures are trapezoidal.

Preferably, the bayonet part is a circular structure formed by four sides, a gap is arranged between the four sides, and the bayonet part is positioned at the middle position of the lower end of the tail part.

Preferably, the lower end of the tail part is of a circular groove structure, and the outer edge of the tail part is provided with an opening.

Preferably, the tail intermediate body is provided with a strip-shaped body, the middle of the strip-shaped body is rectangular, two ends of the strip-shaped body are triangular, and the top end of the triangular body is arc-shaped.

Compared with the prior art, the invention has the beneficial effects that: (1) the hydrophilic coating coated on the surface of the transition section has good hydrophilic performance, and improves the transportability of complex and tortuous lesion vessels; (2) the dilating tube is arranged between the radiography guide wire and the guide catheter, so that no gap exists between the radiography guide wire and the guide catheter, no interval exists, blood vessels are not easily scratched, the probability of arm spasm and swelling is reduced, and the occurrence of serious complications is reduced; (3) the delivery speed of the guide catheter provided with the dilation tube is higher than that of the common clinical delivery speed, so that the efficiency is improved, and the risk of generating complications is reduced.

Drawings

FIG. 1 is a schematic structural view of a stent for coronary artery stent implantation according to the present invention;

FIG. 2 is a schematic view of the structure of the dilating tube and the guiding catheter of the coronary stent implantation of the present invention;

FIG. 3 is a schematic structural view of the head of the stent for coronary artery stent implantation according to the present invention;

FIG. 4 is a schematic structural view of the hydrophilic coating of the head of the dilating tube for coronary artery stent implantation according to the present invention;

FIG. 5 is a schematic view of the tail structure of the dilating tube for coronary artery stent implantation operation according to the present invention;

fig. 6 is a schematic structural view of the upper end and the lower end of the tail part of the dilating tube for coronary artery stent implantation operation according to the present invention.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Example 1: referring to fig. 1 and fig. 2 in combination, the stent for coronary artery stent implantation surgery of the present invention includes a stent body 1, the stent body 1 is a hollow structure, the stent body 1 includes a head portion 2, a middle tube 3 and a tail portion 4, the head portion 2 is connected to the middle tube 3, and the middle tube 3 is connected to the tail portion 4; the tail 4 comprises a tail upper end 41, a tail lower end 42 and a tail intermediate body 43, the tail lower end 42 comprises a bayonet portion 421, the intermediate tube 3 comprises a first bend 31 and a second bend 32, the head 2 comprises a head top end 21, a head tail end 22 and a transition section 23; the middle pipe 3 is of a cylindrical hollow structure, and the head 2 is a cone; the external diameter of the middle tube 3 is equal to the internal diameter of the guide catheter which is matched and connected with the middle tube, the internal diameter of the head top end 21 is equal to the nominal diameter of the contrast guide wire which is matched and connected with the head top end 21, and the external diameter of the head tail end 22 is equal to the internal diameter of the guide catheter which is matched and connected with the head tail end 22; when the dilating tube is used, in the process of cardiac stent operation, medical personnel puncture the right arm of a patient by using a puncture needle, an outer sheath tube is left on the arm after the puncture, an operator penetrates the head end of a guide catheter 5 into the outer sheath tube by about five centimeters, and then penetrates the head 2 of the dilating tube body 1 into the guide catheter 5; referring to fig. 2, 3 and 6, the tail intermediate body 43 is held to connect the bayonet portion 421 of the tail 4 with the tail end 51 of the guide catheter 5, so that the dilating tube body 1 and the guide catheter 5 are fixed together to prevent the dilating tube from sliding in the guide catheter 5 to avoid affecting the operation risk of the operation which may increase the patient; the head 2 of the expansion pipe body 1 is at a position which is one centimeter ahead of the head end 52 of the guide catheter 5, the transition section 23 is attached to the head end 52, the surface of the transition section 23 is coated with the hydrophilic coating 24, the hydrophilic coating 24 is distributed on the surface of the transition section 23 and surrounds a circle, the hydrophilic coating 24 has good hydrophilic performance and is non-toxic and harmless, so that the transition section 23 of the expansion pipe body 1 is better connected with the head end 52 of the guide catheter 5 in a contact way, and the hydrophilic coating 24 improves the transportability through complex and tortuous lesion vessels; then the contrast guide wire is penetrated into the expansion tube body 1 from the central hollow structure of the tail part 4, enters the expansion tube body 1 through the hollow structure of the expansion tube body 1, and is penetrated to the position which is one centimeter ahead of the head part 2; the dilating tube body 1 enters the guiding catheter 5, then the radiography guide wire enters the dilating tube body 1, the three are matched with each other and completely penetrated, wherein no gap exists between the dilating tube body 1 and the radiography guide wire, no gap exists between the outer wall of the dilating tube body 1 and the guiding catheter 5, and a structure without gaps exists among the three instruments, so that the dilating tube body 1, the guiding catheter 5 and the radiography guide wire entering the blood vessel of a patient are similar to a whole, therefore, when the guiding catheter 5 and the radiography guide wire pass through the position 5-8 cm below the elbow joint of the radial artery, the blood vessel cannot be easily scratched or the blood vessel injury (razor effect) cannot be caused, the arm spasm and swelling of the patient cannot be caused, the occurrence of serious complications is reduced, the delivery speed of a doctor can be properly increased during delivery, the efficiency is increased, and the risk of generating complications is also reduced; finally, the doctor can sequentially send the guide catheter 5, the expansion tube body 1 and the radiography guide wire to the position of the coronary artery while observing the position of the radiography guide wire in X-ray fluoroscopy, and then the next stent placing operation is carried out; the angiography guide wire is made of elastic stainless steel materials and has a good guiding effect, the guiding guide tube 5 can be guided into the blood vessel of a patient, and a doctor can observe the thickness of the blood vessel and the trend of the angiography guide wire conveniently in X-ray fluoroscopy.

Preferably, the first bend 31 and the second bend 32 are arc-shaped, the shape of which determines the passage and provides direction to the expansion tube body 1, so that the direction can be adjusted better during the operation.

Preferably, the guide catheters are all 100cm in standard length and are uniformly fixed in length.

Preferably, the length of the expansion tube is set to be 101-102cm, and the length of the expansion tube is longer than that of the guide tube, so that the head end of the expansion tube can conveniently extend out of the head end of the guide catheter.

Referring to fig. 4, the surface of the transition section 23 is coated with a hydrophilic coating 24, the hydrophilic coating 24 is distributed around the surface of the transition section 23, and the hydrophilic coating 24 has good hydrophilic performance and is non-toxic and harmless, so that the transition section 23 of the dilation tube body 1 is better connected with the head end 52 of the guiding catheter 5 in a contact manner; the hydrophilic coating improves deliverability through complex, tortuous lesions.

Referring to fig. 5, the tail lower end 42 is a circular groove structure, and an opening 422 is formed on an outer edge of the tail lower end 42, the circular groove structure of the tail lower end 42 can be tightly matched with the tail end 51 of the guiding catheter 5, so that the expanding tube body 1 is further tightly connected with the guiding catheter 5, and the opening 422 allows the tail lower end 42 to be spaced from the tail end 51, so as to facilitate the expanding tube body 1 to be drawn out from the guiding catheter 5.

Preferably, the tail intermediate body 43 has a strip 431, the middle of the strip 431 is rectangular, two ends of the strip 431 are triangular, and the top end of the triangle is arc-shaped, so that when the dilation tube body 1 enters the guide catheter 5 in the process of cardiac stent surgery, the tail intermediate body 43 needs to be held, and the strip 431 can increase the friction between the hand and the tail intermediate body 43, prevent slipping, influence surgery efficiency and increase pain of patients.

Referring to fig. 6, the upper and lower sides of the upper end 41 of the tail portion are provided with protruding structures 411, which are trapezoidal.

Preferably, the bayonet portion 421 is a circular structure formed by four prisms 4211, and the prisms 4211 have a space therebetween, and the bayonet portion 421 is located at the middle position of the tail lower end 42.

From the above, the external diameter of the transition section of the expanding tube is equal to the internal diameter of the guide catheter which is matched and connected with the transition section, so that the expanding tube is connected and attached to the guide catheter tightly without gaps; the hydrophilic coating coated on the surface of the transition section has good hydrophilic performance, and improves the transportability of complex and tortuous lesion vessels; the dilating tube is arranged between the radiography guide wire and the guide catheter, so that no gap exists between the radiography guide wire and the guide catheter, no interval exists, blood vessels are not easily scratched, the probability of arm spasm and swelling is reduced, and the occurrence of serious complications is reduced; the delivery speed of the guide catheter provided with the dilation tube is higher than that of the common clinical delivery speed, so that the efficiency is improved, and the risk of generating complications is reduced.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.