CN112569456A

CN112569456A - Multifunctional radiography catheter device capable of preventing countercurrent

Info

Publication number: CN112569456A
Application number: CN202011549407.1A
Authority: CN
Inventors: 姜贤男; 舒小娟
Original assignee: Shanghai Kindly Medical Devices Co ltd
Current assignee: Shanghai Kindly Medical Devices Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-03-30

Abstract

The invention discloses a multifunctional radiography conduit device capable of preventing countercurrent; the invention comprises a catheter component, which comprises a rear-section tube, one end of the rear-section tube is fixedly connected with a front-section tube, the front end of the front-section tube is fixedly connected with a tube head, a one-way valve component comprises a shell arranged outside the front-section tube, a liquid guide groove is arranged inside the shell, one end of the liquid guide groove is provided with a stop block, one end of the stop block is embedded and connected with a spring, one end of the spring is provided with a liquid guide port, the connector component comprises a liquid cavity arranged at one end of the rear-section tube, one end of the liquid cavity is connected with, by arranging the check valve component, a liquid guide groove in the shell of the check valve component is connected with contrast liquid, the contrast liquid flows in, the pressure intensity is larger than the pressure intensity of the spring, the baffle block is extruded downwards, the contrast liquid enters the liquid guide hole, the connecting baffle plate is arranged below the spring, the spring is used for bearing the spring, so that the contrast liquid can not flow back, and a relatively finished image is shot in the blood vessel.

Description

Multifunctional radiography catheter device capable of preventing countercurrent

Technical Field

The invention relates to the technical field of medical equipment, in particular to a multifunctional radiography catheter device capable of preventing countercurrent.

Background

The contrast catheter is a key device for percutaneous angiography, and has proper hardness, elasticity, flexibility and torsion; should have good X-ray transmission performance; good shape memory, smooth wall, high contrast performance, and controllable thrombosis performance. The radiography conduit is a long rubber tube and is mainly used for providing the conduit so that the contrast agent can be smoothly introduced into the blood vessel to generate the radiography effect.

The patent No. CN206424406U proposes a contrast catheter anti-reflux device, which comprises an outer sleeve and an anti-reflux assembly, wherein the anti-reflux assembly comprises a sleeve seat, a connecting piece, a flap and a flap base; the diaphragm comprises a main body, a diaphragm upper bulge and a diaphragm lower bulge, wherein an opening is arranged on the diaphragm upper bulge, the diaphragm upper bulge is divided into two diaphragms by the opening, a groove is arranged in the middle of the diaphragm lower bulge, and a round hole is formed in the center of the groove.

However, the above-mentioned patent documents 1, in the conventional multi-functional contrast catheter device, there is a problem that the contrast medium may flow back when the contrast medium is fed into the blood vessel, the contrast medium may not be uniformly distributed into the blood vessel, and the irradiated image may not be accurate. 2. In the existing multifunctional radiography conduit device, one connector can not meet the requirement sometimes, only one connector can singly convey one liquid, and the liquid is input in different times to cause discomfort to a human body and is time-consuming.

Disclosure of Invention

The present invention is directed to a multi-functional contrast catheter device capable of preventing a reverse flow, so as to solve the problems of a contrast medium backflow and a single joint proposed in the background art.

In order to solve the above-mentioned technical problems, the present invention provides a multi-functional contrast catheter apparatus capable of preventing a reverse flow, comprising:

the catheter assembly comprises a rear section of tube, one end of the rear section of tube is fixedly connected with a front section of tube, and the front end of the front section of tube is fixedly connected with a tube head;

the check valve assembly comprises a shell arranged on the outer side of the front section pipe, a liquid guide groove is arranged in the shell, a stop block is arranged at one end of the liquid guide groove, a spring is connected to one end of the stop block in an embedded mode, and a liquid guide port is formed in one end of the spring;

the joint assembly comprises a liquid cavity arranged at one end of the rear-section pipe, one end of the liquid cavity is connected with a rotating shaft, one side of the rotating shaft is provided with a knob, one side of the liquid cavity is provided with a sleeve, one side of the sleeve is connected with a round valve, and one side of the round valve is provided with a connector;

the fixing assembly comprises an inner cavity arranged at the bottom of the rear-section pipe, a backflow prevention valve is arranged in the inner cavity, and one end of the backflow prevention valve is connected with a joint pipe.

Preferably, anterior segment pipe surface is provided with aseptic adhesive tape, aseptic adhesive tape below is provided with and is not stained with paper, sets up and is not stained with paper in order to avoid aseptic adhesive tape surface viscidity to disappear, will not be stained with paper during the use and tear, pastes aseptic adhesive tape in human body surface to fixed anterior segment pipe.

Preferably, one side of the liquid guide port is provided with a connecting baffle plate, and the connecting baffle plate is used for bearing the spring, so that the spring does not move any more after reaching a certain position.

Preferably, the joint Assembly is three groups, and three groups the joint Assembly sets up respectively in back end socle portion, sets up multiunit joint Assembly and is convenient for carry other liquid except that the contrast fluid simultaneously.

Preferably, one side of the round valve is provided with an air inlet, and under the action of atmospheric pressure, liquid flows to the liquid cavity from the interface.

Preferably, the rear tube, the front tube and the tube head are made of PEBAX material, which has the advantages of the lightest engineering thermoplastic elastomer, good and stable consistent properties at low temperatures, no loss of mechanical properties under repeated deformation, fatigue resistance, good resilience and elastic recovery, precise dimensional stability and excellent processability.

Preferably, the catheter assembly is characterized in that an inner tube is arranged inside the catheter assembly, a stainless steel woven layer is arranged outside the inner tube, a PTEF coating is arranged on the inner wall of the inner tube, the stainless steel woven layer can improve the overall flexibility of the catheter, and the PTEF coating can effectively reduce the friction force generated by instruments and the inner cavity of the catheter.

Preferably, an insertion nest is fixedly installed in a through hole formed in the side wall of the guide assembly, an elastic sealing ring is embedded in the insertion nest, the insertion nest can effectively reserve an insertion position for the guide assembly 500, and meanwhile, the elastic sealing ring 190 can effectively ensure the sealing performance of the whole guide tube after the guide assembly 500 is inserted, so that side leakage is avoided.

Preferably, the guiding assembly is installed in the inserting and embedding sleeve in an inserting and embedding mode and consists of a control pull ring and a guiding pipe, the control pull ring is fixedly installed at one end of the guiding pipe, and the control pull ring can perform effective position movement control on the guiding pipe.

Preferably, the other end of the guide tube is located at the inner side of the tube head, the guide tube is tightly contacted and pressed with the inner wall of the tube head, the guide tube can effectively enable the guide tube to have good bending resistance and effective support performance, and meanwhile, the overall shape of the guide tube can be changed by changing the overall shape of the guide tube 520.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the check valve component is arranged, the liquid guide groove in the shell of the check valve component is connected with the contrast liquid, the contrast liquid flows in, the pressure intensity is larger than the pressure intensity of the spring, the stop block is enabled to extrude downwards, the contrast liquid enters the liquid guide opening, the connecting baffle plate is arranged below the spring and used for supporting the spring, the contrast liquid can not flow backwards and can enter the blood vessel, and a relatively finished image is irradiated.

2. The invention sets a joint component at the bottom of the back section pipe, a liquid cavity in the joint component is connected with the back section pipe, a rotating shaft is connected with the liquid cavity, the rotating shaft is rotated by rotating a knob to adjust the speed of the liquid inlet quantity of the liquid cavity, one side of the liquid cavity is connected with a sleeve, one end of the sleeve is connected with a round valve, one end of the round valve is connected with a connector, the connector can be connected with the output end of the contrast medium, the other side of the round valve is provided with an air inlet, three groups of anti-reflux valves are arranged in the inner cavity in a fixed component to fix the joint component, the joint component is respectively arranged at one end of the joint component and one end of two groups of joint pipes with the same structure as the joint component, so that the liquid conveyed by the joint component can not reversely flow and can completely enter the middle part of the blood vessel of a human body, and, can only single carry a liquid, the fractional input makes human uncomfortable, comparatively problem consuming time, because of when carrying the contrast fluid in to the blood vessel, can not guarantee that the people has carried the contrast fluid under the circumstances of not moving, probably can make the tube head bump the blood vessel when the blood vessel under the circumstances of having moved by the conveyer, make angiogenesis rupture, so anterior segment pipe surface is provided with aseptic adhesive tape in the pipe subassembly, aseptic adhesive tape below is equipped with and is not stained with paper, after the tube head gets into the blood vessel, paste aseptic adhesive tape on human skin, avoid being carried the person and in infusion in-process angiogenesis rupture.

3. According to the invention, the inner tube is arranged in the catheter component, the PTEF coating is arranged in the inner tube, the PTEF coating can effectively reduce the friction force generated by instruments and the inner cavity of the catheter, the stainless steel woven layer is arranged outside the inner tube, the overall flexibility of the catheter can be improved, the guide component is arranged in the catheter component, the guide tube can effectively enable the catheter to have good bending resistance and effective support performance, and the overall shape of the catheter can be changed by changing the overall shape of the guide tube 520.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of a sterile patch according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a one-way valve assembly according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a joint assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of the internal material structure of a catheter assembly according to an embodiment of the present invention;

fig. 6 is an enlarged schematic structural diagram at a in the embodiment of the present invention.

In the figure: 100. a catheter assembly; 110. a rear section pipe; 120. a front section pipe; 130. a sterile adhesive tape; 140. the paper is not stained; 150. a pipe head; 160. a stainless steel braid layer; 170. an inner tube; 180. inserting and nesting; 190. an elastic sealing ring; 200. a one-way valve assembly; 210. a housing; 220. a liquid guide groove; 230. a stopper; 240. a spring; 250. a liquid guide port; 260. connecting the baffle plates; 300. a joint assembly; 310. a liquid chamber; 320. a rotating shaft; 330. a knob; 340. a sleeve; 350. a round valve; 360. an interface; 370. an air inlet; 400. a fixing assembly; 410. an inner cavity; 420. an anti-reflux valve; 430. a joint pipe; 500. a directing component; 510. controlling the pull ring; 520. a guide tube.

Detailed Description

In order to solve the problems of contrast backflow and single joint, the embodiment of the invention provides a multifunctional contrast catheter device capable of preventing backflow. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 4, the present embodiment provides a multi-functional contrast catheter device capable of preventing a reverse flow, comprising: the catheter assembly 100 comprises a rear tube 110, one end of the rear tube 110 is fixedly connected with a front tube 120, the front end of the front tube 120 is fixedly connected with a tube head 150, a one-way valve assembly 200 comprises a shell 210 arranged outside the front tube 120, a liquid guide groove 220 is arranged inside the shell 210, one end of the liquid guide groove 220 is provided with a stopper 230, one end of the stopper 230 is connected with a spring 240 in an embedding manner, one end of the spring 240 is provided with a liquid guide port 250, the one-way valve assembly 200 is arranged, the liquid guide groove 220 inside the shell 210 is connected with contrast medium, the contrast medium flows in, the pressure is higher than that of the spring 240, the stopper 230 is pressed downwards to enable the contrast medium to enter the liquid guide port 250, a connecting baffle 260 is arranged below the spring 240 and used for receiving the spring 240 to enable the contrast medium not to flow backwards and enter a blood vessel, and to irradiate a relatively finished image, the connector, one end of a liquid cavity 310 is connected with a rotating shaft 320, one side of the rotating shaft 320 is provided with a knob 330, one side of the liquid cavity 310 is provided with a sleeve 340, one side of the sleeve 340 is connected with a circular valve 350, one side of the circular valve 350 is provided with a connector 360, the bottom of the rear-section pipe 110 is provided with a connector assembly 300, the liquid cavity 310 in the connector assembly 300 is connected with the rear-section pipe 110, the rotating shaft 320 is connected with the liquid cavity 310, the rotating shaft 320 is rotated by rotating the knob 330 to adjust the liquid inlet quantity of the liquid cavity 310, one side of the liquid cavity 310 is connected with the sleeve 340, one end of the sleeve 340 is connected with the circular valve 350, one end of the circular valve 350 is connected with the connector 360, the connector 360 can be connected with the output end of contrast medium, the other side of the circular valve 350 is provided with an air inlet hole 370, the fixing assembly 400 comprises an inner cavity 410 arranged at the bottom of the rear-section pipe 110, the joint assembly 300 is fixed and respectively arranged at one end of the joint assembly 300 and one end of two groups of joint pipes 430 with the same structure as the joint assembly 300, so that liquid conveyed by the joint assembly can not flow reversely and can completely enter the middle part of a human blood vessel, and the joint assemblies 300 are arranged to facilitate conveying different liquids at the same time.

In this embodiment, when in use, the bottom fixing component 400 of the rear tube 110 is connected with the connector component 300, the surface of the front tube 120 is provided with the sterile adhesive tape 130, one end of the front tube 120 is provided with the tube head 150, the one-way valve component 200 is arranged, the liquid guiding groove 220 in the shell 210 of the one-way valve component 200 is connected with the contrast medium, the contrast medium flows in, the pressure is higher than the pressure of the spring 240, the stopper 230 is pressed downwards to enable the contrast medium to enter the liquid guiding port 250, the connecting baffle 260 is arranged below the spring 240 to support the spring 240, so that the contrast medium can not flow backwards and enter the blood vessel to irradiate a relatively finished image, the bottom of the rear tube 110 is provided with the connector component 300, the liquid cavity 310 in the connector component 300 is connected with the rear tube 110, the rotating shaft 320 is connected with the liquid cavity 310, the rotating knob 330 is used to rotate the rotating shaft 320 to adjust the liquid inlet, one end of the sleeve 340 is connected with the circular valve 350, one end of the circular valve 350 is connected with the interface 360, the interface 360 can be connected with the output end of the contrast fluid, the other side of the circular valve 350 is provided with an air inlet 370, three groups of anti-reflux valves 420 are arranged in the inner cavity 410 of the fixing component 400 and are respectively arranged at one end of the joint component 300 and one end of two groups of joint pipes 430 with the same structure as the joint component 300, so that the delivered fluid can not reversely flow and can completely enter the middle part of the blood vessel of the human body, and a plurality of groups of joint components 300 are arranged, so that different fluids can be delivered simultaneously, the problems that in the existing multifunctional contrast catheter device, one joint can not meet the requirement sometimes, only one fluid can be delivered singly, the input is uncomfortable to the human body in a grading way, and the time is consumed are solved, because when the contrast fluid is delivered into the blood vessel, the contrast fluid can not be delivered under the condition that a person, the blood vessel is broken, so the surface of the front section tube 120 in the catheter assembly 100 is provided with the sterile adhesive plaster 130, the non-stick paper 140 is arranged below the sterile adhesive plaster 130, and after the tube head 150 enters the blood vessel, the sterile adhesive plaster 130 is stuck on the skin of the human body, so that the blood vessel of a conveyed person is prevented from being broken in the infusion process.

Example 2

Referring to fig. 1 to 4, a further improvement is made on the basis of embodiment 1: the surface of the front tube 120 is provided with a sterile adhesive plaster 130, the lower part of the sterile adhesive plaster 130 is provided with a non-stick paper 140, the non-stick paper 140 is arranged to prevent the surface viscosity of the sterile adhesive plaster 130 from disappearing, the non-stick paper 140 is torn off when the disposable adhesive plaster is used, the sterile adhesive plaster 130 is pasted on the surface of a human body, thereby the front tube 120 is fixed, one side of the liquid guide port 250 is provided with a connecting baffle 260, the connecting baffle 260 is used for bearing a spring 240, the spring 240 does not move after reaching a certain position, the joint assemblies 300 are three groups, the three groups of joint assemblies 300 are respectively arranged at the bottom of the rear tube 110, the joint assemblies 300 are arranged to be convenient for simultaneously conveying other liquids except contrast liquid, one side of the round valve 350 is provided with an air inlet 370, the liquid can flow from the interface 360 to the liquid cavity 310 under the action of atmospheric pressure, the rear tube 110, the front tube 120 and the tube head 150 are all made, Good and consistent performance at low temperatures, no loss of mechanical properties under repeated deformation, fatigue resistance, good resilience and elastic recovery, precise dimensional stability and excellent processability.

Example 3

Referring to fig. 1 to 6, a further improvement is made on the basis of embodiment 2: the guide assembly 100 is provided with an inner tube 170 inside, the inner tube 170 is provided with a stainless steel woven layer 160 outside, the inner wall of the inner tube 170 is provided with a PTEF coating, the stainless steel woven layer 160 can improve the overall flexibility of the guide tube, the PTEF coating can effectively reduce the friction force generated by the instruments and the inner cavity of the guide tube, a plug-in sleeve 180 is fixedly arranged in a through hole formed in the side wall of the guide assembly 100, an elastic sealing ring 190 is embedded in the plug-in sleeve 180, the plug-in sleeve 180 can effectively reserve a plug-in position for the guide assembly 500, meanwhile, the elastic sealing ring 190 can effectively ensure the overall guide tube sealing performance after the guide assembly 500 is inserted to avoid side leakage, the guide assembly 500 is embedded in the plug-in sleeve 180, the guide assembly 500 is composed of a control pull ring 510 and a guide tube 520, the control pull ring 510 is fixedly arranged at one end of the guide tube 520, and the control pull ring, the other end of the guide tube 520 is located at the inner side of the tube head 150, the guide tube 520 is in close contact with and is extruded with the inner wall of the tube head 150, the guide tube 520 can effectively enable the catheter to have good bending resistance and effective support performance, and meanwhile, the overall shape of the catheter can be changed by changing the overall shape of the guide tube 520.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A multi-functional contrast catheter apparatus for preventing retrograde flow, comprising:

the catheter assembly (100) comprises a rear section of tube (110), wherein one end of the rear section of tube (110) is fixedly connected with a front section of tube (120), and the front end of the front section of tube (120) is fixedly connected with a tube head (150);

the check valve assembly (200) comprises a shell (210) arranged on the outer side of the front section pipe (120), a liquid guide groove (220) is arranged in the shell (210), a stop block (230) is arranged at one end of the liquid guide groove (220), a spring (240) is connected to one end of the stop block (230) in an embedded mode, and a liquid guide opening (250) is formed in one end of the spring (240);

the joint assembly (300) comprises a liquid cavity (310) arranged at one end of the rear-section pipe (110), one end of the liquid cavity (310) is connected with a rotating shaft (320), a knob (330) is arranged on one side of the rotating shaft (320), a sleeve (340) is arranged on one side of the liquid cavity (310), a round valve (350) is connected to one side of the sleeve (340), and a connector (360) is arranged on one side of the round valve (350);

the fixing assembly (400) comprises an inner cavity (410) arranged at the bottom of the rear-section pipe (110), wherein a backflow prevention valve (420) is arranged in the inner cavity (410), and one end of the backflow prevention valve (420) is connected with a joint pipe (430).

2. A multi-functional angiographic catheter device according to claim 1 wherein the catheter is adapted to prevent retrograde flow by: the surface of the front section pipe (120) is provided with a sterile adhesive tape (130), and a non-stick paper (140) is arranged below the sterile adhesive tape (130).

3. A multi-functional angiographic catheter device according to claim 2 wherein the reverse flow prevention means comprises: one side of the liquid guide port (250) is provided with a connecting baffle (260).

4. A multi-functional angiographic catheter device according to claim 3 wherein the reverse flow prevention feature is: the joint assemblies (300) are three groups, and the three groups of joint assemblies (300) are respectively arranged at the bottom of the rear section pipe (110).

5. A multi-functional angiographic catheter device according to claim 4 wherein the reverse flow prevention feature is: an air inlet hole (370) is formed in one side of the circular valve (350).

6. A multi-functional angiographic catheter device according to claim 5 wherein the catheter is adapted to prevent retrograde flow by: the rear section pipe (110), the front section pipe (120) and the pipe head (150) are all made of PEBAX materials.

7. A multi-functional angiographic catheter device according to claim 5 wherein the catheter is adapted to prevent retrograde flow by: the catheter assembly (100) is characterized in that an inner tube (170) is arranged inside the catheter assembly (100), a stainless steel woven layer (160) is arranged outside the inner tube (170), and a PTEF coating is arranged on the inner wall of the inner tube (170).

8. A multi-functional angiographic catheter device according to claim 7 wherein the reverse flow prevention feature is: an inserting sleeve (180) is fixedly installed in a through hole formed in the side wall of the conduit assembly (100), and an elastic sealing ring (190) is embedded in the inserting sleeve (180).

9. A multi-functional angiographic catheter device according to claim 8 wherein the reverse flow prevention feature is: the guiding assembly (500) is inserted and installed in the inserting nest (180), the guiding assembly (500) is composed of a control pull ring (510) and a guiding pipe (520), and the control pull ring (510) is fixedly installed at one end of the guiding pipe (520).

10. A multi-functional angiographic catheter device according to claim 9 wherein the reverse flow prevention feature is: the other end of the guide pipe (520) is positioned at the inner side of the pipe head (150), and the guide pipe (520) is tightly contacted and pressed with the inner wall of the pipe head (150).