CN215822078U - Direction-controllable radiography catheter - Google Patents

Abstract

The utility model discloses a direction-controllable radiography catheter, comprising: the outer catheter is mainly used for an external structure of the radiography catheter, the lower end of the outer catheter is of a semicircular structure, and a guide outlet is formed in the lower end of the outer catheter; the baffle is fixedly arranged at the upper end of the outer conduit, the upper surface of the outer conduit is connected with the lower surface of the baffle through adhesion, and a sealing structure is formed between the baffle and the outer conduit; the operation shell is fixedly arranged at the upper end of the baffle, and an integrated structure is formed between the operation shell and the baffle; the second cavity is opened in the inside of operation shell, the size and the shape of second cavity with the inside size shape of operation shell is the same, and the controllable radiography pipe of this direction adopts neotype structural design, can be convenient for control the entering direction of radiography pipe, makes things convenient for entering into pathological change treatment region that the radiography pipe can be accurate, improves the convenience of treatment.

Description

Direction-controllable radiography catheter

Technical Field

The utility model relates to the technical field of medical treatment devices, in particular to a direction-controllable radiography catheter.

Background

The contrast catheter is a key device for percutaneous angiography, and can quickly and accurately reach a diseased part so as to conveniently carry out clear angiography and further treatment;

in order to control the direction of the contrast catheter, a single traction wire is used in the market to achieve the purpose of changing the direction of the contrast catheter by traction on the port part of the contrast catheter, however, the single guide wire can only control one direction of the contrast catheter generally, and after the direction is changed, the catheter is not convenient to be aligned, and the inconvenience of operation is caused.

Therefore, it is necessary to design a direction controllable contrast catheter to address the above problems.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a steerable catheter to solve the above-mentioned problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a steerable contrast catheter, comprising:

the outer catheter is mainly used for an external structure of the radiography catheter, the lower end of the outer catheter is of a semicircular structure, and a guide outlet is formed in the lower end of the outer catheter;

the baffle is fixedly arranged at the upper end of the outer conduit, the upper surface of the outer conduit is connected with the lower surface of the baffle through adhesion, and a sealing structure is formed between the baffle and the outer conduit;

the operation shell is fixedly arranged at the upper end of the baffle, and an integrated structure is formed between the operation shell and the baffle;

and the second cavity is arranged in the operation shell, and the size and the shape of the second cavity are the same as the size and the shape of the inner part of the operation shell.

Preferably, the outer catheter further comprises:

the inner conduit is connected to the inner side of the outer conduit in a sleeved mode, the lower end of the inner conduit is tightly attached to the inner portion of the outer conduit, and a communicating structure is formed between the inner conduit and the outlet;

the first cavity is arranged in a gap between the inner conduit and the outer conduit, and a communication structure is formed between the first cavity and the second cavity.

Preferably, the inner catheter further comprises:

the connecting blocks are fixedly arranged outside the lower end of the inner guide pipe, the connecting blocks are arranged in the first cavity, the connecting blocks are arranged on the periphery of the inner guide pipe, and the number of the connecting blocks is four;

the guide blocks are fixedly arranged on the outer wall of the inner guide pipe, the guide blocks are arranged in the first cavity, the guide blocks are arranged above the connecting blocks, the guide blocks are uniformly arranged on the outer wall of the inner guide pipe, and each row of guide blocks corresponds to one group of connecting blocks;

a manual control valve fixedly installed at an outside of the inner guide tube, the manual control valve being provided at an upper end of the operating case;

a syringe connection port provided at the tip of the inner catheter.

Preferably, the connecting block further comprises:

the lower end of the traction guide wire is fixedly connected inside the connecting block, the traction guide wire penetrates through the inside of the guide block, and the traction guide wire is movably connected with the guide block.

Preferably, the operation housing further comprises:

the adjusting bases are fixedly arranged at the upper end of the operating shell, the number of groups of the adjusting bases is four, and each group of the adjusting bases corresponds to one group of the connecting blocks;

the adjusting guide rod is movably connected inside the adjusting base, the adjusting guide rod is connected with the adjusting base through threaded engagement, the adjusting guide rod is of a hollow structure, and the upper end of the traction guide wire is fixedly connected inside the adjusting guide rod.

Preferably, the second cavity further comprises:

the liquid injection hole is formed in the top end of the operation shell, penetrates through the operation shell and is arranged on the inner side of the adjusting base;

and the anti-overflow plug is fixedly arranged on the inner side of the second cavity and is arranged right below the liquid injection hole.

Compared with the prior art, the utility model has the beneficial effects that: the radiography conduit with the controllable direction adopts a novel structural design, can conveniently control the entering direction of the radiography conduit, can conveniently and accurately enter a lesion treatment area, improves the convenience of treatment, can conveniently control and change a plurality of directions of the radiography conduit through the arrangement of four groups of symmetrical traction guide wires and the traction cooperation among the four groups of traction guide wires, and can also correct the radiography conduit after passing through abnormal blood vessels, thereby preventing the tip of the conduit from continuously bending and colliding with the blood vessels;

1. the first cavity is arranged, so that the guide wire can be conveniently pulled to move movably in the first cavity, abrasion caused by friction between the guide wire and the outer catheter and between the guide wire and the inner catheter when the guide wire is pulled is prevented, in addition, the guide function of the guide block is utilized, the guide wire can be conveniently pulled to move according to the arrangement trend of the guide block when the guide wire is pulled and stretched, and the guide wire can be prevented from being mutually wound when being used, so that the inconvenience in use is avoided;

2. utilize and adjust the rotation of guide arm on adjusting the base, can be convenient for adjust the guide arm and stretch out or retract to the operation shell, thereby can drive the strength that the guide wire that pulls that fixes at adjusting the guide arm receives the tractive, and the guide wire that pulls through one side pulls interior pipe to receiving tensile guide wire one side bending, thereby can reach the purpose that changes the radiography pipe direction, and inject normal saline into first cavity and second cavity through annotating the liquid hole, can improve the smooth and easy effect of pulling the guide wire activity, and can also improve the clear effect of radiography.

Drawings

FIG. 1 is a schematic isometric view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic sectional view taken along line A-A of FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 3 according to the present invention;

FIG. 5 is an enlarged view of the structure of FIG. 3 at C according to the present invention.

In the figure: 1. an outer catheter; 2. an inner conduit; 3. a first cavity; 4. connecting blocks; 5. a guide block; 6. drawing a guide wire; 7. a lead-out port; 8. a baffle plate; 9. an operating housing; 10. a second cavity; 11. an adjusting base; 12. adjusting the guide rod; 13. a liquid injection hole; 14. an anti-overflow plug; 15. a manual control valve; 16. a syringe connecting port.

Detailed Description

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.

Referring to fig. 1-5, the present invention provides a technical solution: a steerable radiography catheter comprising

The outer catheter 1 is mainly used for an external structure of the radiography catheter, the lower end of the outer catheter 1 is of a semicircular structure, and the lower end of the outer catheter 1 is provided with aguide outlet 7;

thebaffle 8 is fixedly arranged at the upper end of the outer guide pipe 1, the upper surface of the outer guide pipe 1 is connected with the lower surface of thebaffle 8 through adhesion, and a sealing structure is formed between thebaffle 8 and the outer guide pipe 1;

theoperation shell 9 is fixedly arranged at the upper end of thebaffle plate 8, and an integrated structure is formed between theoperation shell 9 and thebaffle plate 8;

and asecond cavity 10 opened inside theoperation housing 9, wherein the size and shape of thesecond cavity 10 are the same as the inner size and shape of theoperation housing 9.

The outer catheter 1 further comprises:

theinner conduit 2 is connected to the inner side of the outer conduit 1 in a sleeved mode, the lower end of theinner conduit 2 is tightly attached to the inner portion of the outer conduit 1, and a communicating structure is formed between theinner conduit 2 and theoutlet 7;

thefirst cavity 3 is arranged in a gap between theinner catheter 2 and the outer catheter 1, and a communication structure is formed between thefirst cavity 3 and thesecond cavity 10, so that thetraction guide wire 6 can move conveniently, and thetraction guide wire 6 can be prevented from being rubbed.

Theinner catheter 2 further comprises:

the connectingblocks 4 are fixedly arranged outside the lower end of theinner guide pipe 2, the connectingblocks 4 are arranged inside thefirst cavity 3, the connectingblocks 4 are arranged on the periphery of theinner guide pipe 2, and the number of the groups of the connectingblocks 4 is four;

the guide blocks 5 are fixedly installed on the outer wall of theinner catheter 2, the guide blocks 5 are arranged in thefirst cavity 3, the guide blocks 5 are installed above the connectingblocks 4, the guide blocks 5 are uniformly arranged on the outer wall of theinner catheter 2, each row of guide blocks 5 correspond to one group of connectingblocks 4, and by means of the guide effect of the guide blocks 5, thetraction guide wire 6 can conveniently move according to the arrangement trend of the guide blocks 5 when being pulled and stretched, and thetraction guide wires 6 can be prevented from being wound between adjacent guide wires when being used, so that inconvenience in use is avoided;

amanual control valve 15 fixedly installed outside theinner guide tube 2, themanual control valve 15 being provided at an upper end of theoperation housing 9;

and asyringe connection port 16 opened at the tip end of theinner catheter 2.

Connecting block 4 is still including:

the lower end of thetraction guide wire 6 is fixedly connected inside the connectingblock 4, thetraction guide wire 6 penetrates through the inside of the guide block 5, and the connection mode between thetraction guide wire 6 and the guide block 5 is a movable connection mode, so that the connection is facilitated.

The operatinghousing 9 further comprises:

the adjustingbases 11 are fixedly arranged at the upper end of the operatingshell 9, the number of the groups of the adjusting bases 11 is four, and each group of the adjusting bases 11 corresponds to one group of the connectingblocks 4;

adjustingguide rod 12, its swing joint is in the inside of adjustingbase 11, adjustingguide rod 12 and adjustingbase 11 between be connected through threaded engagement, adjustingguide rod 12's structure is hollow structure, the upper end fixed connection of drawingseal wire 6 is in the inside of adjustingguide rod 12, utilize the rotation of adjustingguide rod 12 on adjustingbase 11, can be convenient for adjustguide rod 12 and stretch out or retract tooperation shell 9, thereby can drive the strength that drawsseal wire 6 and receive the tractive that fixes at adjustingguide rod 12, and drawinterior pipe 2 through theguide wire 6 that draws of one side and draw theguide wire 6 one side bending of tensile.

Thesecond cavity 10 further comprises:

aliquid injection hole 13 formed in the top end of theoperation case 9, theliquid injection hole 13 penetrating the inside of theoperation case 9, theliquid injection hole 13 being provided inside theadjustment base 11;

and the spill-proof plug 14 is fixedly arranged on the inner side of thesecond cavity 10, and the spill-proof plug 14 is arranged right below theliquid injection hole 13, can prevent liquid from seeping out and plays a role in sealing.

The working principle is as follows: when using the device, firstly, according to the figure 1-5, the outer catheter 1 with one end of the export 7 is held by hand, then the outer catheter 1 with one end of the export 7 is introduced into the blood vessel of the patient, then the injector with the physiological saline is inserted into the liquid injection hole 13 in the operation shell 9, then the physiological saline is injected into the first cavity 3, the physiological saline can fill the second cavity 10 due to the communication between the first cavity 3 and the second cavity 10, when the physiological saline fills the first cavity 3 and the second cavity 10, the injector is pulled out again, and the physiological saline can not overflow to the outside due to the function of the overflow preventing plug 14, then the outer catheter 1 is slowly sent into the blood vessel, when the direction of the contrast catheter needs to be changed due to the abnormal blood vessel, one hand is held on the cambered surface of the operation shell 9 and blocked by the baffle plate 8, the anti-slipping is achieved, then the other hand rotates the adjusting guide rod 12 on the side needing to deflect the radiography conduit, the adjusting guide rod 12 extends outwards from the adjusting base 11, then the corresponding traction guide wire 6 can be driven to be pulled outwards due to the extension of the adjusting guide rod 12, the traction guide wire 6 can move outwards along the guide block 5, then the traction guide wire 6 can drive the connecting block 4 fixed at the other end to move towards the upper end, the inner conduit 2 can be bent towards the pulled side due to the traction of the connecting block 4 on one side of the inner conduit 2, the outer conduit 1 can be driven to bend together, when attention needs to be paid, when the adjusting guide rod 12 on the side needing to bend needs to be adjusted, the adjusting guide rod 12 on the other corresponding side needs to be loosened, and the traction guide wire 6 on the other side can be adjusted only when being in a loose state;

after the contrast medium is passed through the abnormal blood vessel, the adjustingguide rod 12 on the bent side is loosened, so that thetraction guide wire 6 on the bent side is not subjected to traction force any more, so that the contrast medium catheter returns to normal, and then the contrast medium catheter reaches the lesion area, and then themanual control valve 15 is opened, so that thesyringe connecting port 16 is connected with a syringe with the contrast medium, and the contrast medium is injected into theinner catheter 2, flows along theinner catheter 2 into the blood vessel, and then flows out from theguide outlet 7 to reach the lesion, so that the contrast medium can be conveniently performed.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A steerable contrast catheter, comprising:

the outer catheter (1) is mainly used for an external structure of the radiography catheter, the lower end of the outer catheter (1) is of a semicircular structure, and a guide outlet (7) is formed in the lower end of the outer catheter (1);

the baffle (8) is fixedly arranged at the upper end of the outer conduit (1), the upper surface of the outer conduit (1) is connected with the lower surface of the baffle (8) through adhesion, and a sealing structure is formed between the baffle (8) and the outer conduit (1);

the operation shell (9) is fixedly arranged at the upper end of the baffle plate (8), and an integrated structure is formed between the operation shell (9) and the baffle plate (8);

and a second cavity (10) which is opened in the operation housing (9), wherein the size and the shape of the second cavity (10) are the same as the inner size and the shape of the operation housing (9).

2. A steerable contrast catheter according to claim 1, wherein the outer catheter (1) further comprises:

the inner conduit (2) is connected to the inner side of the outer conduit (1) in a sleeved mode, the lower end of the inner conduit (2) is tightly attached to the inner portion of the outer conduit (1), and a communicating structure is formed between the inner conduit (2) and the outlet (7);

the first cavity (3) is arranged in a gap between the inner conduit (2) and the outer conduit (1), and a communication structure is formed between the first cavity (3) and the second cavity (10).

3. A steerable contrast catheter according to claim 2, wherein the inner catheter (2) further comprises:

the connecting blocks (4) are fixedly arranged outside the lower end of the inner guide pipe (2), the connecting blocks (4) are arranged inside the first cavity (3), the connecting blocks (4) are arranged on the periphery of the inner guide pipe (2), and the number of the groups of the connecting blocks (4) is four;

the guide blocks (5) are fixedly arranged on the outer wall of the inner guide pipe (2), the guide blocks (5) are arranged in the first cavity (3), the guide blocks (5) are arranged above the connecting blocks (4), the guide blocks (5) are uniformly arranged on the outer wall of the inner guide pipe (2), and each row of guide blocks (5) corresponds to one group of connecting blocks (4);

a manual control valve (15) fixedly installed outside the inner guide tube (2), the manual control valve (15) being provided at an upper end of the operating case (9);

a syringe connection port (16) which is provided at the tip end of the inner catheter (2).

4. A steerable catheter as in claim 3, wherein the connector block (4) further comprises:

the lower end of the traction guide wire (6) is fixedly connected inside the connecting block (4), the traction guide wire (6) penetrates through the inside of the guide block (5), and the traction guide wire (6) is movably connected with the guide block (5).

5. A steerable contrast catheter according to claim 4, wherein the operation housing (9) further comprises:

the adjusting bases (11) are fixedly mounted at the upper end of the operating shell (9), the number of the groups of the adjusting bases (11) is four, and each group of the adjusting bases (11) corresponds to one group of the connecting blocks (4);

the adjusting guide rod (12) is movably connected inside the adjusting base (11), the adjusting guide rod (12) is connected with the adjusting base (11) through thread engagement, the adjusting guide rod (12) is of a hollow structure, and the upper end of the traction guide wire (6) is fixedly connected inside the adjusting guide rod (12).

6. A steerable contrast catheter according to claim 5, wherein the second lumen (10) further comprises:

the liquid injection hole (13) is formed in the top end of the operation shell (9), the liquid injection hole (13) penetrates through the operation shell (9), and the liquid injection hole (13) is formed in the inner side of the adjusting base (11);

and the anti-overflow plug (14) is fixedly arranged on the inner side of the second cavity (10), and the anti-overflow plug (14) is arranged right below the liquid injection hole (13).

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