CN210844903U

CN210844903U - PTA sacculus expansion pipe

Info

Publication number: CN210844903U
Application number: CN201921539104.4U
Authority: CN
Inventors: 姚敏; 孙金秀
Original assignee: Jiangsu Changmei Medtech Co ltd
Current assignee: Jiangsu Changmei Medtech Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-06-26
Anticipated expiration: 2029-09-16

Abstract

The utility model belongs to the technical field of dilating catheters, in particular to a PTA balloon dilating catheter, which comprises a handle, a double-cavity tube with one end connected with the handle and a balloon penetrated by the other end of the double-cavity tube, wherein both ends of the balloon are respectively connected with the outer side wall of the double-cavity tube in a sealing way; the double-cavity tube comprises a partition plate arranged in the double-cavity tube, the partition plate is arranged along the length direction of the double-cavity tube, the partition plate divides the double-cavity tube into a liquid injection cavity and a guide wire cavity, and a quick exchange port used for penetrating and replacing a guide wire is formed in the guide wire cavity. The PTA balloon dilatation catheter has the advantages of more flexible use, reduced use of parts, reduced production procedures, reduced production cost and improved product quality effect.

Description

PTA sacculus expansion pipe

Technical Field

The utility model belongs to the technical field of the dilatation catheter, concretely relates to PTA sacculus dilatation catheter.

Background

With the development of society and the increasing living standard of people, the symptoms of blood vessel stenosis or occlusion caused by various reasons are more common, and various products for improving the blood vessel stenosis or occlusion are produced. The clinician uses the saccule dilating catheter to achieve better effect on treating and improving the stenosis or occlusion symptoms of the blood vessel. The balloon dilatation catheter with the consequent rapid exchange is one of the most widely used in vascular interventional therapy.

As shown in fig. 1 and 2, the conventional PTA balloon dilatation catheter is formed by intersecting an outer tube 301 and a core tube 30, wherein one end of the core tube 30 is located inside the outer tube 301 and is integrally formed with the inner sidewall of the outer tube 301, the outer tube 301 is provided with a rapid exchange port 9, and the rapid exchange port 9 is communicated with the end of the core tube 30. Since the core tube 30 is positioned in the outer tube 301, the core tube 30 is complicated in processing, high in processing cost, and low in production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a PTA sacculus expansion pipe to the manufacturing procedure of PTA sacculus expansion pipe is complicated among the solution prior art, technical problem that production efficiency is low.

In order to solve the technical problem, the utility model provides a PTA balloon dilatation catheter, which comprises a double-cavity tube and a balloon penetrated by one end of the double-cavity tube, wherein two ends of the balloon are respectively connected with the outer side wall of the double-cavity tube in a sealing way;

the double-cavity tube comprises a liquid injection cavity and a guide wire cavity, and a quick exchange port for penetrating and replacing a guide wire is formed in the guide wire cavity;

the liquid injection cavity is communicated with the interior of the balloon.

Further: a blocking piece is arranged at one end of the rapid exchange port, which is far away from the balloon, in a cutting manner, and the free end of the blocking piece is positioned in the guide wire cavity;

the separation blade sets up to the slope of sacculus direction, and is formed with the guide surface that makes things convenient for the seal wire to wear out from fast exchange mouth.

Further: the double-lumen tube balloon also comprises a handle, and the handle is connected with one end of the double-lumen tube far away from the balloon.

Further: the handle is a three-way handle, a first channel of the handle is communicated with the liquid injection cavity, a second channel of the handle is communicated with the thread guide cavity, and a third channel of the handle is connected with the double-cavity tube.

Further: the handle is provided with a sheath, and the sheath is positioned at the joint of the handle and the double-cavity tube.

Further: the tip internal seal of sacculus is provided with the soft head of front end, the tip of double lumen pipe and the tip butt of the soft head of front end, the middle part of the soft head of front end runs through and is provided with the through-hole with the chamber intercommunication of silk guide.

Further: the outer side wall of the double-cavity tube, which is positioned in the saccule, is provided with two developing marks, and the two developing marks are respectively positioned at two ends of the saccule.

The beneficial effects of the utility model are that, the utility model discloses a PTA sacculus expansion pipe seal wire can follow the tip of sacculus and insert in the use, wears out from fast exchange mouth department, also can penetrate from the handle, wears out from the tip of sacculus for the seal wire uses more in a flexible way, can be fine carry out the seal wire exchange, and manufacturing procedure is simple, has improved production efficiency, has reduced the processing cost, convenient operation. Meanwhile, one end of the double-cavity tube penetrates through the balloon, and two ends of the balloon are respectively in sealing connection with the outer side wall of the double-cavity tube, so that liquid in the balloon is not easy to leak in the process of penetrating the guide wire into the guide wire cavity.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a prior art PTA balloon dilation catheter;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a front view of a preferred embodiment of the PTA balloon dilation catheter of the present invention;

FIG. 4 is a cross-sectional view of a preferred embodiment of the present invention in which the guidewire is threaded through the soft tip at the front end and threaded out of the quick-change port;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a cross-sectional view of a preferred embodiment of the present invention guidewire threaded through the handle and threaded out of the soft tip at the front end;

fig. 7 is an enlarged view of a portion C in fig. 6.

In the figure:

1. a handle; 2. a sheath; 3. a double lumen tube; 31. a liquid injection cavity; 32. a guidewire lumen; 4. a balloon; 5. a front end soft head; 6. a guide wire; 7. developing the mark; 8. a baffle plate; 9. a fast switching port; 301. an outer tube; 302. and a core tube.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Fig. 3 is a schematic view of a preferred embodiment of the PTA balloon dilation catheter of the present invention;

as shown in fig. 3, the present embodiment provides a PTA balloon dilatation catheter, which comprises a handle 1, a dual-lumen tube 3 with one end connected to the handle 1, and a balloon 4 penetrated by the other end of the dual-lumen tube 3, wherein two ends of the balloon 4 are respectively connected to the outer side wall of the dual-lumen tube 3 in a sealing manner.

Specifically, as shown in fig. 5, the double lumen tube 3 includes a priming chamber 31 and a guidewire chamber 32, and the end of the priming chamber 31 is sealed to prevent liquid from flowing into the guidewire chamber 32 when liquid is injected. The guide wire cavity 32 is provided with a quick exchange port 9 for penetrating and replacing the guide wire 6, and the liquid injection cavity 31 is communicated with the inside of the T balloon 4. When the PTA balloon dilatation catheter is used, the guide wire 6 can be inserted from the end of the balloon 4 and then passes out from the quick exchange port 9, and also can be inserted from the handle 1 and then passes out from the end of the balloon 4. Sacculus 4 is run through to the one end of double lumen pipe 3, and the both ends of sacculus 4 respectively with double lumen pipe 3's lateral wall sealing connection for seal wire 6 is at the in-process that penetrates seal wire chamber 32, and the liquid in the sacculus 4 is difficult for revealing, adopts two kinds of modes to wear to establish and change seal wire 6, makes seal wire 6 use more nimble, can be fine carry out the seal wire exchange, makes things convenient for the doctor to use.

Preferably, as shown in fig. 3, the handle 1 is a three-way handle, the first channel of the handle 1 is communicated with the infusion cavity 31, the second channel of the handle 1 is communicated with the guide wire cavity 32, and the third channel of the handle 1 is connected with the double-cavity tube 3. The three-way handle is adopted, so that a doctor is more convenient to add liquid and the guide wire 6, interference can not exist, the doctor can expand the balloon 4 conveniently, the liquid in the balloon 4 is not easy to leak, and the treatment effect is improved. The PTA balloon dilatation catheter of the embodiment reduces the use of parts and production processes, so that the processes are simpler, the product quality and the production efficiency are improved, and the production cost is reduced.

Fig. 3 is an alternative front view of the sheath of the present invention;

optionally, a sheath 2 is arranged on the handle 1, and the sheath 2 is positioned at the joint of the handle 1 and the double-lumen tube 3. The sheath 2 makes the liquid in the liquid injection cavity 31 not easy to leak from the joint of the handle 1 and the double-cavity tube 3, and improves the quality of the PTA balloon dilatation catheter.

Fig. 4 is an alternative cross-sectional view of the balloon of the present invention;

optionally, the balloon 4 is provided with a front soft head 5 in the end far away from the fast exchange port 9, the end of the double-lumen tube 3 abuts against the end of the front soft head 5, and a through hole is provided in the middle of the front soft head 5 in a penetrating manner and is communicated with the guide wire chamber 32. The soft head 5 at the front end facilitates the guide wire 6 to penetrate from the end part of the balloon 4, and protects the guide wire 6, so that the guide wire 6 is not easy to damage in the using process.

FIG. 3 is an alternative front view of the development marker of the present invention;

optionally, the outer side wall of the double-lumen tube 3 inside the balloon 4 is provided with a plurality of visualization marks 7, preferably, two visualization marks 7 are provided, and two visualization marks 7 are respectively located at two ends of the balloon 4.

Fig. 5 is an alternative cross-sectional view of the baffle of the present invention;

optionally, in order to make things convenient for seal wire 6 to wear out from fast exchange mouth 9 more, the one end cutting that keeps away from sacculus 4 at fast exchange mouth 9 is formed with separation blade 8, and separation blade 8's free end is located wire guide chamber 32, and separation blade 8 sets up to the direction slope of sacculus 4, is formed with the guide surface that makes things convenient for seal wire 6 to wear out fast exchange mouth 9. The baffle plate 8 is a part of the double-cavity tube 3, and the specific processing process is that the waste material of the double-cavity tube 3 is not completely chipped off when the quick exchange port 9 is machined, a part is reserved, and the baffle plate 8 is formed through treatment. The separation blade 8 is arranged to facilitate the guide wire 6 to penetrate out of the fast exchange port 9, so that the use of a doctor is facilitated, meanwhile, the product quality is also improved, and the comprehensive performance of the product is better.

As shown in fig. 4 and 6, during the use of the PTA balloon dilatation catheter, the guide wire 6 is inserted in two ways:

one is that the guide wire 6 is inserted into the guide wire cavity 32 from the front soft head 5, and then the guide wire 6 is passed out from the fast exchanging port 9 along the guide surface of the baffle plate 8;

the other is that the guide wire 6 is threaded into the guide wire cavity 32 from the second channel of the handle 1, the guide wire 6 can push the blocking piece 8 to rotate towards the quick exchange port 9, so that the blocking piece 8 is flush with the quick exchange port 9, then the guide wire 6 continues to move in the guide wire cavity 32, and finally passes out from the front soft head 5.

In view of the above, it is desirable to provide,

when the PTA balloon dilatation catheter is used, the guide wire 6 can penetrate into the guide wire cavity 32 from the front end soft head 5 and then penetrate out from the quick exchange port 9 under the guidance of the guide surface of the baffle plate 8; the guide wire 6 can also be inserted into the guide wire cavity 32 from the second channel of the handle 1, then the guide wire 6 pushes the blocking piece 8 to rotate towards the quick exchange port 9, so that the blocking piece 8 is flush with the quick exchange port 9, and then the guide wire 6 continuously passes out of the front soft head 5 along the guide wire cavity 32. The guide wire 6 is arranged in a penetrating mode and can adopt two modes, the guide wire exchange can be well carried out, the use of doctors is facilitated, the use of parts is reduced, the production procedures are reduced, the procedures are simpler, the product quality and the production efficiency are improved, and the production cost is reduced.

All the parts of the devices selected in the present application are general standard parts or parts known to those skilled in the art, and the structures and principles thereof can be known to those skilled in the art through technical manuals or through routine experimental methods.

In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways, and the above-described apparatus embodiments are merely illustrative.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A PTA balloon dilatation catheter is characterized in that:

the double-cavity tube type balloon comprises a double-cavity tube (3) and a balloon (4) penetrated by one end of the double-cavity tube (3), wherein two ends of the balloon (4) are respectively connected with the outer side wall of the double-cavity tube (3) in a sealing manner;

the double-cavity tube (3) comprises a liquid injection cavity (31) and a guide wire cavity (32), and the guide wire cavity (32) is provided with a quick exchange port (9) for penetrating and replacing a guide wire (6);

the liquid injection cavity (31) is communicated with the inside of the balloon (4).

2. The PTA balloon dilation catheter of claim 1, wherein:

a blocking piece (8) is cut at one end of the quick exchange port (9) far away from the balloon (4), and the free end of the blocking piece (8) is positioned in the guide wire cavity (32);

the baffle plate (8) is obliquely arranged towards the balloon (4) and is provided with a guide surface which facilitates the guide wire (6) to penetrate out from the quick exchange port (9).

3. The PTA balloon dilation catheter of claim 2, wherein:

the double-cavity balloon is characterized by further comprising a handle (1), wherein the handle (1) is connected with one end, away from the balloon (4), of the double-cavity tube (3).

4. The PTA balloon dilation catheter of claim 3, wherein:

the utility model discloses a medical liquid injection device, including handle (1), handle (1) are three-way handle, the first passageway and annotate liquid chamber (31) intercommunication of handle (1), the second passageway and the seal wire chamber (32) intercommunication of handle (1), the third passageway and the double lumen pipe (3) of handle (1) are connected.

5. The PTA balloon dilation catheter of claim 4, wherein:

the handle (1) is provided with a sheath (2), and the sheath (2) is positioned at the joint of the handle (1) and the double-cavity tube (3).

6. The PTA balloon dilation catheter of claim 1, wherein:

the tip internal seal of sacculus (4) is provided with the soft head of front end (5), the tip of double lumen pipe (3) and the tip butt of the soft head of front end (5), and the middle part of the soft head of front end (5) runs through the through-hole that is provided with and leads to wire chamber (32) intercommunication.

7. The PTA balloon dilation catheter of claim 1, wherein:

the outer side wall of the double-cavity tube (3) in the saccule (4) is provided with two developing marks (7), and the two developing marks (7) are respectively positioned at two ends of the saccule (4).