CN112121253A

CN112121253A - Radiography catheter

Info

Publication number: CN112121253A
Application number: CN202011076054.8A
Authority: CN
Inventors: 秦晓鹏; 魏先锋
Original assignee: Enove Precision Plastics Catheter Co ltd
Current assignee: Enove Precision Plastics Catheter Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2020-12-25

Abstract

The invention discloses a contrast catheter, which comprises a tube head assembly, a connecting tube assembly and an injection assembly, wherein the tube head assembly comprises a tube head, a connecting tube assembly and a syringe assembly; the tube head subassembly includes the tube head, the jack has been seted up on the tube head, be equipped with first sealing washer in the jack, first sealing washer initial state is closed state and is used for the shutoff the jack, two play liquid holes have been seted up to the bilateral symmetry of jack, two all be equipped with one-way flow mechanism in the play liquid hole, one-way flow mechanism is arranged in avoiding the blood reflux in the blood vessel to the jack. According to the invention, through the arrangement of the first sealing ring, blood entering the human body from the tube head assembly can not enter the connecting tube through the first sealing ring, and meanwhile, a steel wire can be ensured to pass through the tube head and enter the connecting tube, so that the steel wire can be drawn out, and meanwhile, the first sealing ring can realize automatic sealing when the steel wire is not inserted, so that the jack can be isolated from the outside.

Description

Radiography catheter

Technical Field

The invention relates to the technical field of medical equipment, in particular to a radiography catheter.

Background

At present, a contrast catheter in a medical instrument is widely used because the contrast catheter has the advantages of being capable of smoothly introducing a contrast agent into a blood vessel to generate a contrast effect and effectively avoiding damaging the blood vessel.

The contrast conduit is a long high molecular conduit, is a key apparatus for percutaneous angiography, and belongs to a diagnostic conduit. Its main function is in introducing the blood vessel smoothly with the contrast medium, produce the radiography effect, so need the distal end pipe of radiography pipe to have good shape memory, pliability and X ray detectability, the head end pipe has good pliability, can effectively avoid damaging the blood vessel, and distal end pipe and head end pipe fusion splice need be fixed well, distal end pipe and head end pipe fusion splice fracture when avoiding the radiography pipe to take out from the blood vessel, lead to the head end pipe to keep somewhere in the blood vessel, cause the medical accident. However, the fixing effect of the distal tube and the head end of the existing contrast catheter at the fusion joint often cannot meet the requirement, so that the fusion joint of the distal tube and the head end tube is easy to break, and serious potential safety hazards are caused.

Therefore, a contrast catheter is proposed to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a contrast catheter, which is provided with a tube head assembly, a connecting tube assembly and an injection assembly, wherein the connecting tube and the tube head are of an integrally formed structure, so that the possibility of breakage of the tube head and the connecting tube is avoided, and the contrast catheter is safer.

The invention provides a specific technical scheme as follows:

a contrast catheter comprising a tubing head assembly, a connector assembly, and a syringe assembly; the tube head subassembly includes the tube head, the jack has been seted up on the tube head, be equipped with first sealing washer in the jack, first sealing washer initial state is closed state and is used for the shutoff the jack, two play liquid holes have been seted up to the bilateral symmetry of jack, two all be equipped with one-way flow mechanism in the play liquid hole, one-way flow mechanism is arranged in avoiding the blood reflux in the blood vessel to the jack.

As a further improvement of the present invention, the first sealing ring is an elastic silica gel sealing ring, a first through hole is formed in a center position of the first sealing ring, the first sealing ring presses the first through hole in an initial state, so that the first through hole has no permeability, and one end of the first through hole is in a funnel-shaped structure.

As a further improvement of the invention, one end of the pipe head is provided with a hemispherical structure, and one end of the first sealing ring is matched with the hemispherical structure.

As a further improvement of the invention, the unidirectional flow mechanism comprises a fixed block, the fixed block is fixedly arranged in the liquid outlet hole, a round hole is formed in the fixed block, and an elastic pad is fixedly arranged on one side of the fixed block.

As a further improvement of the invention, the elastic cushion comprises two fixing parts and a deformation part, wherein the two fixing parts are fixedly connected with the fixing block, the deformation part is matched with the round hole, and the deformation part is used for plugging the round hole.

As a further improvement of the invention, the connecting pipe assembly comprises a connecting pipe, the connecting pipe and the pipe head are of an integrally formed structure, the connecting pipe is a hose, a mounting seat is fixedly mounted at one end of the connecting pipe, which is far away from the pipe head, and a second sealing ring is fixedly mounted in the mounting seat.

As a further improvement of the present invention, the second sealing ring is an elastic silica gel sealing ring, and a second through hole is formed in a central position of the second sealing ring, and the second sealing ring presses the second through hole in an initial state, so that the first through hole has no permeability.

As a further improvement of the invention, the injection assembly comprises a syringe having a needle mounted at one end thereof and extending through the second bore.

The invention has the following beneficial effects:

(1) through setting up first sealing washer for in the tube head subassembly enters into human blood can not enter into the connecting pipe through first sealing washer, can guarantee simultaneously that the steel wire passes the tube head and enters into the connecting pipe, so that the steel wire can take out, simultaneously, first sealing washer can be when not inserting the steel wire, can realize self-sealing, make the jack keep apart with external.

(2) Through setting up first perforation for the steel wire can pass first sealing washer, sets up the infundibulate structure, makes entering into in the first perforation that the steel wire can be comparatively convenient.

(3) Through setting up half spherical structure, can reduce the resistance of tube head in the blood vessel, can not cause the injury to the vascular wall simultaneously, protect human blood vessel.

(4) Through setting up two one-way flow mechanism for blood in the blood vessel can not flow back to in the connecting pipe, can realize that the contrast medium enters into the corresponding position of human body simultaneously, so that further formation of image.

(5) Through setting up the connecting pipe subassembly for the connecting pipe enters into human back, and outside air can not enter into in the connecting pipe, thereby guarantees the cleanness in the connecting pipe, also avoids the contrast medium to enter into the connecting pipe simultaneously and afterwards receives the pollution, and connecting pipe and tube head are integrated into one piece structure simultaneously, have avoided tube head and the cracked possibility of connecting pipe, thereby more have the security.

(6) Through set up the second perforation on the second sealing washer, realized injection assembly and connecting tube assembly's sealing connection, simultaneously, also realized the sealed extraction of steel wire and the sealed injection of contrast medium, avoided causing the air admission to the connecting tube in when taking out steel wire or injecting contrast medium to pollute contrast medium or air admission human blood vessel.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of the overall construction of the angiographic catheter of the invention;

FIG. 2 is a schematic cross-sectional view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 2;

FIG. 4 is an enlarged view of portion C of FIG. 2;

FIG. 5 is a schematic view of a one-way flow mechanism in the display device of the catheter of the present invention;

FIG. 6 is a schematic diagram showing the deformation of the deformation portion of the elastic pad in the display device of the radiography catheter according to the present invention;

fig. 7 is an enlarged view of a portion D in fig. 1.

In the figure, the syringe comprises a tube head assembly 1, a tube head assembly 11, a jack 12, a first sealing ring 121, a funnel-shaped structure 13, a hemispherical structure 14, a liquid outlet hole 15, a fixing block 16, a round hole 17, an elastic pad 171, a fixing part 172, a deformation part 2, a connecting tube assembly 21, a connecting tube 22, a mounting seat 23, a second sealing ring 3, an injection assembly 31, an injector 32 and a needle.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "fixed," "mounted," "connected," or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. It will be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, are used merely to facilitate description of the present invention and to simplify description, and do not indicate or imply that the referenced devices or elements must have the particular orientations, configurations and operations described in the specification, and therefore are not to be considered limiting.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings:

referring to fig. 1-7, a contrast catheter includes a tip assembly 1, a connector tube assembly 2, and an injection assembly 3; tube head subassembly 1 includes the tube head, jack 11 has been seted up on the tube head, be equipped with first sealing washer 12 in the jack 11, first sealing washer 12 initial state is the closure state and is used for the shutoff jack 11, two play liquid holes 14, two have been seted up to jack 11 bilateral symmetry all be equipped with one-way flow mechanism in the play liquid hole 14, one-way flow mechanism is arranged in avoiding blood among the blood vessel to flow back in jack 11.

Through setting up first sealing washer 12 for in the tube head subassembly 1 enters into human blood can not enter into connecting pipe 21 through first sealing washer 12, can guarantee simultaneously that the steel wire passes in the tube head enters into connecting pipe 21, so that the steel wire can take out, simultaneously, first sealing washer 12 can be when not inserting the steel wire, can realize self-sealing, make jack 11 can keep apart with the external world.

In some embodiments of the present invention, the first sealing ring 12 is an elastic silica gel sealing ring, and a first through hole is formed in a central position of the first sealing ring 12, the first through hole is pressed by the first sealing ring 12 in an initial state, so that the first through hole has no permeability, and one end of the first through hole is a funnel-shaped structure 121.

Through setting up first perforation for the steel wire can pass first sealing washer 12, sets up infundibulate structure 121, makes entering into in the first perforation that the steel wire can be comparatively convenient.

In some embodiments of the present invention, one end of the pipe head is provided with a semispherical structure 13, and one end of the first sealing ring 12 is matched with the semispherical structure 13.

Through setting up hemispherical structure 13, can reduce the resistance of tube head in the blood vessel, can not cause the injury to the vascular wall simultaneously, protection human blood vessel.

In some embodiments of the present invention, the unidirectional flow mechanism includes a fixed block 15, the fixed block 15 is fixedly installed in the liquid outlet hole 14, a circular hole 16 is formed on the fixed block 15, and an elastic pad 17 is fixedly installed on one side of the fixed block 15.

In some embodiments of the present invention, the elastic pad 17 includes two fixing portions 171 and a deforming portion 172, the two fixing portions 171 are fixedly connected to the fixing block 15, the deforming portion 172 is adapted to the circular hole 16, and the deforming portion 172 is used for sealing the circular hole 16.

By arranging the two one-way flow mechanisms, blood in the blood vessel can not flow back into the connecting pipe 21, and meanwhile, the contrast agent can enter the corresponding part of the human body, so that further imaging is facilitated.

In some embodiments of the present invention, the connection tube assembly 2 includes a connection tube 21, the connection tube 21 and the tube head are integrally formed, the connection tube 21 is a flexible tube, an installation seat 22 is fixedly installed at one end of the connection tube 21 away from the tube head, and a second sealing ring 23 is fixedly installed in the installation seat 22.

Through setting up connecting pipe subassembly 2 for connecting pipe 21 enters into human back, and outside air can not enter into connecting pipe 21 in, thereby guarantee the cleanness in the connecting pipe 21, also avoid the contrast medium to enter into the connecting pipe 21 in the back and receive the pollution simultaneously, connecting pipe 21 and tube head be integrated into one piece structure simultaneously, avoided tube head and the cracked possibility of connecting pipe 21, thereby more have the security.

In some embodiments of the present invention, the second sealing ring 23 is an elastic silica gel sealing ring, and a second through hole is formed in a central position of the second sealing ring 23, and the second sealing ring 23 presses the second through hole in an initial state, so that the first through hole has no permeability.

Through set up the second perforation on second sealing washer 23, realized injection unit 3 and connecting pipe assembly 2's sealing connection, simultaneously, also realized the sealed extraction of steel wire and the sealed injection of contrast medium, avoided causing the air admission to connecting pipe 21 in when taking out steel wire or injecting contrast medium to pollute contrast medium or air admission human blood vessel.

In some embodiments of the present invention, the injection assembly 3 comprises a syringe 31, and a needle 32 is mounted at one end of the syringe 31, and the needle 32 penetrates the second perforation.

The working principle of the invention is as follows: the invention relates to a radiography conduit, firstly, inserting a steel wire into a corresponding position on a human body, then inserting the steel wire into a funnel-shaped structure 121, penetrating through a first perforation on a first sealing ring 12, leading the steel wire to enter a jack 11 and a connecting pipe component 2, at the moment, the first sealing ring 12 can play a sealing role and tightly wrap the steel wire to prevent air from entering the jack 11, at the moment, inserting a tube head component 1 into a blood vessel of the human body to advance along the track of the steel wire, when the tube head component 1 completely enters the blood vessel, the first sealing ring 12 and two elastic cushions 17 can prevent blood from entering the connecting pipe component 2, continuously inserting the tube head component 1 to the deep part of the blood vessel to lead a connecting pipe 21 to enter the blood vessel, at the moment, installing an injection component 3 on an installation seat 22, the steel needle tube of a needle head 32 on the injection component 3 is a thicker steel needle tube, thus facilitating one end of the steel wire to enter the steel needle tube, when the steel wire enters a proper position of the steel needle tube, the needle head 32 is pulled out, one end of the steel wire is moved out of the mounting seat 22, the steel wire is pulled out, and the steel wire is pulled out, so that the tube head assembly 1 and the connecting tube assembly 2 are positioned in a blood vessel of a human body, when the tube head assembly 1 moves to a specified position in the human body, the injection assembly 3 filled with the contrast agent is inserted into the mounting seat 22, and at the moment, the second sealing ring 23 plays a role in sealing the needle head 32, so that air can be prevented from entering the connecting tube 21 to pollute the inner wall of the connecting tube 21 and the contrast agent, and the cleanness of the contrast agent entering the human body is guaranteed;

after the contrast medium in the syringe 31 injected in the connecting pipe 21, the contrast medium can enter into the jack 11 through the connecting pipe 21, when the pressure of the contrast medium in the jack 11 reached certain value, the contrast medium promoted deformation portion 172 and takes place to warp and swell, at this moment, the contrast medium can flow into in the human body from deformation portion 172, when the pressure in the jack 11 reduced, the pressure of blood can oppress deformation portion 172 and kick-back, and block round hole 16, thereby avoid blood to enter into in the connecting pipe subassembly 2, the process of whole intubate and injection contrast medium all goes on under the sealed condition, thereby avoided the inside blood of outside air pollution human body, human blood reflux also is avoided simultaneously.

In summary, the tube head assembly 1, the connecting tube assembly 2 and the injection assembly 3 are arranged, and the connecting tube 21 and the tube head are in an integrally formed structure, so that the possibility of breakage of the tube head and the connecting tube 21 is avoided, and the safety is improved.

While there have been shown and described what are at present considered the fundamental principles of the invention, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. A contrast catheter comprising a tubing head assembly, a connector assembly, and a syringe assembly;

the tube head subassembly includes the tube head, the jack has been seted up on the tube head, be equipped with first sealing washer in the jack, first sealing washer initial state is closed state and is used for the shutoff the jack, two play liquid holes have been seted up to the bilateral symmetry of jack, two all be equipped with one-way flow mechanism in the play liquid hole, one-way flow mechanism is arranged in avoiding the blood reflux in the blood vessel to the jack.

2. The contrast catheter of claim 1, wherein: first perforation has been seted up for having elastic silica gel sealing washer and central point to first sealing washer, first sealing washer is at the first perforation of initial condition extrusion, makes first perforation not have the permeability, first fenestrate one end is the infundibulate structure.

3. The contrast catheter of claim 1, wherein: one end of the tube head is provided with a hemispherical structure, and one end of the first sealing ring is matched with the hemispherical structure.

4. The contrast catheter of claim 1, wherein: the unidirectional flow mechanism comprises a fixed block, the fixed block is fixedly arranged in the liquid outlet hole, a round hole is formed in the fixed block, and an elastic pad is fixedly arranged on one side of the fixed block.

5. The contrast catheter of claim 4, wherein: the elastic cushion comprises two fixing parts and a deformation part, wherein the two fixing parts are fixedly connected with the fixing blocks, the deformation part is matched with the round hole, and the deformation part is used for plugging the round hole.

6. The contrast catheter of claim 1, wherein: the connecting pipe subassembly includes the connecting pipe, the connecting pipe with the tube head is the integrated into one piece structure, the connecting pipe is the hose, the connecting pipe is kept away from the one end fixed mounting of tube head has the mount pad, fixed mounting has the second sealing washer in the mount pad.

7. The contrast catheter of claim 6, wherein: the second sealing washer has seted up the second for having elastic silica gel sealing washer and central point puts and perforates, the second sealing washer is at initial state extrusion second perforation, makes first perforation do not have the permeability.

8. The contrast catheter of claim 7, wherein: the injection assembly comprises a syringe, a needle is mounted at one end of the syringe, and the needle penetrates through the second perforation.