Coronary artery intervention guide wire fixing device

Abstract

The invention relates to the technical field of coronary intervention, in particular to a coronary intervention guide wire fixing device which comprises a shell, a rotary knob is rotatably mounted at the other end of the shell, a connecting column is fixedly mounted at the end, located in the shell, of the rotary knob, and a fixing bin rotatably connected with the inner wall of the shell is fixedly mounted at the end, away from the rotary knob, of the connecting column; rotating discs are arranged at the front end and the rear end in the fixed bin, the rotating disc on the front side is fixedly connected with the inner wall of the shell, the rotating disc on the rear side is fixedly connected with the inner wall of the fixed bin, and a plurality of sliding clamping assemblies are arranged between the two rotating discs; a spiral rubber belt is fixedly connected between the front rotating disc and the rear rotating disc. According to the interventional guide wire clamping device, uniform clamping force can be applied to an interventional guide wire, a buffer structure is arranged at the clamping position of the guide wire, damage to the interventional guide wire caused by too large clamping pressure can be reduced, the interventional guide wire is supported and limited in multiple directions, deviation and shaking of the interventional guide wire are reduced, and follow-up surgical treatment is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of coronary intervention, and in particular to a coronary intervention guidewire fixing device. Background Art

[0002] Percutaneous coronary intervention refers to a treatment method that uses cardiac catheter technology to clear the narrow or even occluded coronary artery lumen, thereby improving myocardial blood perfusion. In coronary intervention surgery, a guidewire or catheter will be used to assist the coronary intervention surgery. The guidewire or catheter needs to be limited during use to prevent its shaking from affecting the surgical process.

[0003] However, in the prior art, when fixing the coronary intervention guidewire, the clamping method is relatively simple, resulting in a poor fixation effect. It is impossible to apply uniform pressure to the guidewire from multiple angles, which makes the intervention guidewire prone to deviation or shaking, affecting the subsequent positioning and insertion treatment of the balloon catheter, and easily causing damage to the coronary artery, affecting the patient's life safety. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings in the prior art and to propose a coronary intervention guidewire fixation device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A coronary intervention guidewire fixing device comprises a shell, a conical joint is fixedly installed at one end of the shell, a through hole is provided at the tip of the conical joint, a knob is rotatably installed at the other end of the shell, a connecting column is fixedly installed at one end of the knob located inside the shell, a fixing bin rotatably connected to the inner wall of the shell is fixedly installed at one end of the connecting column away from the knob, and through grooves are provided on the connecting column and the side walls at both ends of the fixing bin; A turntable is provided at both the front and rear ends of the fixed warehouse, and a plurality of arc-shaped through grooves are provided on the turntable in a circumferential array, and the arc-shaped through grooves on the two turntables rotate in opposite directions, the turntable on the front side is fixedly connected to the inner wall of the shell, and the turntable on the rear side is fixedly connected to the inner wall of the fixed warehouse, and a plurality of groups of sliding clamping assemblies are provided between the two groups of the turntables, and each group of the sliding clamping assemblies is composed of a plurality of sliding clamping blocks distributed in an annular shape, and two adjacent sliding clamping blocks on the front and rear sides are connected by a sliding column fixedly installed on the sliding clamping block, and the arc-shaped through grooves on the turntable are slidably connected to the corresponding sliding column; A spiral rubber belt is fixedly connected between the front and rear groups of rotating disks, and the spiral rubber belt passes through the centers of the multiple groups of sliding clamping components in sequence.

[0006] Preferably, the plurality of groups of sliding clamping components are staggered in distribution.

[0007] Preferably, a cross groove is provided at one end of the fixed warehouse close to the conical joint, and a plurality of groups of piston push rods are slidably installed in a circular array in the cross groove. The end of the piston push rod away from the cross groove is sealingly and slidably connected to a piston cavity fixedly installed on the inner wall of the outer shell, and an air duct is connected to the inside of the piston cavity, and the end of the air duct away from the piston cavity is connected to a clamping mechanism installed at the front inside the outer shell.

[0008] Preferably, the front turntable is fixedly connected to the plurality of piston chambers via slots provided on the fixed bin.

[0009] Preferably, the clamping mechanism includes a first airbag and a second airbag glued to the front end of the inner shell, the first airbag and the second airbag are provided in multiple groups and are respectively connected to the corresponding air ducts, a gap is provided between the first airbag and the second airbag, and a lubrication mechanism is provided between the multiple first airbags.

[0010] Preferably, the length of the second airbag is longer than that of the first airbag.

[0011] Preferably, the lubrication mechanism comprises a plurality of liquid guide tubes arranged between the plurality of first airbags, the lower ends of the liquid guide tubes being provided with valves, the upper ends of the plurality of liquid guide tubes being connected to a medicine liquid tank after penetrating the side wall of the shell, and the medicine liquid tank storing anticoagulant therein.

[0012] Preferably, the anticoagulant is heparin which also has a lubricating effect.

[0013] Preferably, the lower end of the shell is fixedly connected with an insertion tube.

[0014] Preferably, two groups of brackets are fixedly mounted on the lower end of the shell, a support column is fixedly mounted on the lower end of the bracket, and a support plate is fixedly connected to the lower end of the support column.

[0015] Compared with the prior art, the advantages of the present invention are: 1. In the present application, through the arrangement of the piston chamber, the piston push rod, the first airbag and the second airbag, when the connecting column is rotated by turning the knob, the fixed chamber can be driven to rotate inside the shell. At this time, the piston push rod is pushed into the piston chamber by the cross groove at the front end of the fixed chamber, so that the air inside the piston chamber is squeezed, and the gas passes into the first airbag and the second airbag through the airway tube, so that the two airbags are inflated to clamp the balloon catheter, thereby preliminarily fixing the interventional guide wire and the balloon catheter.

[0016] 2. In the present application, by setting the connecting column, fixed bin, turntable and sliding clamp, when the right turntable rotates following the fixed bin, multiple groups of sliding clamping assemblies can be rotated, so that the hole at the center of the sliding clamping assembly gradually increases or decreases. When the hole at the center is reduced, it can provide support and restriction to the interventional guide wire passing through it from multiple directions, so as to stably clamp the interventional guide wire. In addition, the multiple groups of sliding clamping assemblies are staggered at a certain angle, which has a better clamping effect on the interventional guide wire.

[0017] 3. In the present application, a spiral rubber belt is provided. The spiral rubber belt can rotate and shrink to the outside of the interventional guide wire and wrap it while following the rotation of the rear turntable, thereby forming a buffer structure between the sliding clamp and the interventional guide wire to make the force transmission more uniform. This elastic structure can adapt to the shape of the interventional guide wire to avoid damage to the interventional guide wire due to excessive local pressure, while ensuring that the interventional guide wire can be stably fixed in all directions to prevent slight displacement or shaking of the interventional guide wire.

[0018] 4. In the present application, by configuring a drug solution tank, heparin, a catheter and a valve, when the heparin stored in the drug solution tank is injected into the outer wall of the balloon catheter through the catheter, the outer wall of the balloon catheter can be lubricated on the one hand, and the anticoagulant effect of heparin can reduce the coagulation of platelets on the balloon catheter on the other hand.

[0019] To sum up, the present application can apply a relatively uniform clamping force to the interventional guidewire, can effectively clamp guidewires of different diameters, and has a buffer structure at the guidewire clamping point, which can reduce the damage to the interventional guidewire caused by excessive clamping pressure, provide support and restriction for the interventional guidewire from multiple directions, reduce the deviation and shaking of the interventional guidewire, and facilitate subsequent surgical treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall axonometric structure of a coronary intervention guidewire fixation device proposed by the present invention.

[0021] Figure 2 This is a schematic diagram of the catheter and valve structure of a coronary intervention guidewire fixation device proposed by the present invention.

[0022] Figure 3 This is a schematic diagram of the first airbag and airway structure of a coronary intervention guidewire fixation device proposed by the present invention.

[0023] Figure 4 This is a schematic diagram of the internal structure of a fixing chamber of a coronary intervention guidewire fixing device proposed by the present invention.

[0024] Figure 5This is a schematic diagram of the structure of a sliding clamp and a sliding column of a coronary intervention guidewire fixation device proposed by the present invention.

[0025] Figure 6 This is a schematic diagram of the structure of a turntable and a spiral rubber belt of a coronary intervention guidewire fixing device proposed by the present invention.

[0026] Figure 7 This is a schematic diagram of the overall side-sectional structure of a coronary intervention guidewire fixation device proposed by the present invention.

[0027] Figure 8 This is a schematic diagram of the side cross-sectional structure of the piston chamber of a coronary intervention guidewire fixation device proposed by the present invention.

[0028] In the figure: 1 interventional guide wire, 2 balloon catheter, 3 conical joint, 4 shell, 5 knob, 6 insertion tube, 7 bracket, 8 support column, 9 support plate, 10 drug solution tank, 11 catheter, 12 valve, 13 first airbag, 14 second airbag, 15 airway, 16 piston chamber, 17 piston push rod, 18 fixed bin, 19 turntable, 20 sliding clamp block, 21 sliding column, 22 spiral rubber belt, 23 connecting column. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Reference Figures 1 to 8 A coronary intervention guidewire fixing device includes a bracket 7, which is provided with two front and rear groups. A support column 8 is fixedly installed at the lower end of the bracket 7, and a support plate 9 is fixedly connected to the lower end of the support column 8. The inner side of the front and rear groups of brackets 7 is fixedly installed with the same shell 4, one end of the shell 4 is fixedly installed with a conical joint 3, the tip of the conical joint 3 is provided with a through hole, and the other end of the shell 4 is rotatably installed with a knob 5.

[0031] A connecting column 23 is fixedly installed at one end of the knob 5 located inside the shell 4, and a fixed bin 18 is fixedly installed at the end of the connecting column 23 away from the knob 5. Through grooves for the interventional guide wire 1 to pass through are provided on the side walls at both ends of the connecting column 23 and the fixed bin 18. The fixed bin 18 is rotatably connected to the inner wall of the shell 4, and a cross groove is provided at the front end of the fixed bin 18. Multiple groups of piston push rods 17 are slidably installed in a circular array in the cross groove. The end of the piston push rod 17 away from the cross groove is sealed and movably connected to a piston chamber 16 fixedly installed on the inner wall of the shell 4, and the piston chamber 16 is connected to an air guide tube 15. The first airbag 13 and the second airbag 14 are glued to the front end of the shell 4. The first airbag 13 and the second airbag 14 are provided in multiple groups and are respectively connected with the corresponding airway tubes 15. A gap is provided between the first airbag 13 and the second airbag 14 for the interventional guide wire 1 and the balloon catheter 2 to pass through. A plurality of liquid catheters 11 are provided above the balloon catheter 2. A valve 12 is installed at the connection between the liquid catheter 11 and the balloon catheter 2. The upper ends of the plurality of liquid catheters 11 are connected to a medicine liquid tank 10 after penetrating the side wall of the shell 4. Heparin is stored in the medicine liquid tank 10.

[0032] When the connecting column 23 is rotated by turning the knob 5, the fixed chamber 18 can be driven to rotate inside the shell 4. At this time, the piston push rod 17 is pushed into the piston chamber 16 under the drive of the cross groove at the front end of the fixed chamber 18, so that the air inside the piston chamber 16 is squeezed, and the gas passes into the first airbag 13 and the second airbag 14 through the air guide tube 15, so that the two airbags are inflated and clamp the balloon catheter 2.

[0033] The lower end of the shell 4 is fixedly connected to an insertion tube 6, and the insertion tube 6 is sleeved on the outside of the balloon catheter 2. When the heparin stored in the medicine tank 10 is injected into the outer wall of the balloon catheter 2 through the catheter 11, the outer wall of the balloon catheter 2 can be lubricated. Then, excess heparin can flow into the insertion tube 6 along the balloon catheter 2. The interior of the insertion tube 6 is arranged with dense arc-shaped protrusions (not shown in the figure), which can effectively reduce the friction when the balloon catheter 2 is inserted.

[0034] The fixed bin 18 is provided with a rotating disk 19 at both the front and rear ends. The rotating disk 19 is provided with a plurality of arc-shaped through grooves in a circumferential array. The arc-shaped through grooves on the two rotating disks 19 rotate in opposite directions. The rotating disk 19 on the front side is fixedly connected to the plurality of piston chambers 16 through the slots provided on the fixed bin 18 (see attached Figure 8As shown), the position of the front turntable 19 can be fixed to prevent it from rotating. The slot on the shell 4 allows the fixed bin 18 to rotate at a certain angle. The rear turntable 19 is fixedly connected to the inner wall of the fixed bin 18. When the connecting column 23 is rotated by turning the knob 5, the fixed bin 18 can be driven to rotate inside the shell 4. At this time, the rear turntable 19 will rotate synchronously with the fixed bin 18. Multiple groups of sliding clamping components are arranged between the two groups of turntables 19, and the multiple groups of sliding clamping components are staggered (as shown in the attached figure). Figure 4 As shown), the number of sliding clamping assemblies can be set according to actual needs, but should not be less than two groups. Each group of sliding clamping assemblies is composed of multiple sliding clamping blocks 20, and the number of clamping blocks can be set according to actual needs. The two adjacent sliding clamping blocks 20 are connected by a sliding column 21 fixedly installed on the sliding clamping blocks 20, and the sliding clamping assemblies at the front and rear ends are slidably connected to the arc-shaped through grooves on the front turntable 19 and the rear turntable 19 respectively through the sliding column 21.

[0035] When the right turntable 19 rotates along with the fixed bin 18, multiple sets of sliding clamping assemblies can be rotated, so that the hole at the center of the sliding clamping assembly gradually increases or decreases (such as the attached Figure 5 As shown in the figure), when the hole at the center is reduced in size, it can provide support and restriction to the interventional guide wire 1 passing through it from multiple directions, thereby stably clamping the interventional guide wire 1, and the multiple groups of sliding clamping components are staggered at a certain angle, which has a better clamping effect on the interventional guide wire 1.

[0036] In order to prevent the interventional guide wire 1 from being damaged when the clamping pressure is too large, a spiral rubber belt 22 is fixedly connected between the front and rear groups of turntables 19. The spiral rubber belt 22 passes through the centers of multiple groups of sliding clamping components in sequence and is sleeved on the outside of the interventional guide wire 1. The spiral rubber belt 22 can rotate and shrink to the outside of the interventional guide wire 1 while following the rotation of the rear turntable 19 to wrap it, thereby forming a buffer structure between the sliding clamp 20 and the interventional guide wire 1 to make the force transmission more uniform. This elastic structure can adapt to the shape of the interventional guide wire 1 to avoid damage to the interventional guide wire 1 due to excessive local pressure, while ensuring that the interventional guide wire 1 can be stably fixed in all directions to prevent the interventional guide wire 1 from slight displacement or shaking.

[0037] The specific working principle of the present invention is as follows: when the interventional guide wire 1 reaches the affected area along the blood vessel during coronary surgery and the balloon catheter 2 needs to be inserted along the interventional guide wire 1, the balloon catheter 2 is inserted from the insertion tube 6. When the front end of the balloon catheter 2 coincides with the tip of the tapered joint 3 and the opening near the front end of the balloon catheter 2 is flush with the horizontal line, the knob 5 is rotated clockwise, and the fixed chamber 18 rotates with the knob 5 through the connecting column 23. The piston push rod 17 is driven by the cross groove at the front end of the fixed chamber 18 to push into the piston chamber 16, so that the air inside the piston chamber 16 is squeezed, and the gas passes through the airway 15. The first airbag 13 and the second airbag 14 are inserted to expand and clamp the balloon catheter 2. At this time, the interventional guidewire 1 is inserted from the tip of the tapered joint 3. The thinner inner diameter of the front section of the balloon catheter 2 affects the insertion of the interventional guidewire 1. The structure at the tip of the tapered joint 3 can play a good initial guiding role for the interventional guidewire 1. The interventional guidewire 1 is more easily inserted along the central axis direction determined by the tapered structure, and the possibility of scratching or colliding with the surrounding structures is eliminated, thereby avoiding scratches or damage to the balloon catheter 2 by the interventional guidewire 1, improving the efficiency of the operation while also providing better protection for the patient's life safety.

[0038] When the interventional guide wire 1 cannot be inserted further, rotate the knob 5 counterclockwise to continue inserting the interventional guide wire 1 to the end of the knob 5, and rotate the knob 5 clockwise. The front turntable 19 is fixed to the housing 4 through the piston chamber 16, and the rear turntable 19 rotates with the fixed bin 18 to drive the spiral rubber belt 22 to rotate and shrink and wrap around the interventional guide wire 1. At the same time, the sliding clamp 20 rotates driven by the sliding column 21, and the sliding clamps 20 interact with each other and slide inward to achieve the function of clamping and fixing.

[0039] The spiral rubber belt 22 has a certain elasticity, and its spring-like structure can simultaneously apply a relatively uniform clamping force to a certain section of the interventional guide wire 1 during rotation. At the same time, a buffer structure is formed between the sliding clamp 20 and the interventional guide wire 1 to make the force transmission more uniform. Unlike some rigid clamping devices, this elastic structure can adapt to the shape of the interventional guide wire 1 to avoid damage to the interventional guide wire 1 due to excessive local pressure, while ensuring that the interventional guide wire 1 can be stably fixed in all directions to prevent the interventional guide wire 1 from slight displacement or shaking.

[0040] A plurality of sliding clamps 20 form a whole, and are arranged in a staggered manner to form a regular polygon inside. At the same time, different groups of sliding clamps 20 are rotated at a certain angle, and the regular polygons inside different groups are staggered with each other to form a nearly circular hole on the central axis of the fixed bin 18. The sliding clamps 20 apply pressure to the interventional guide wire 1 by clamping the spiral rubber belt 22. The regular polygon structure can provide support and restriction to the interventional guide wire 1 from multiple directions. Compared with point clamping, clamping in the form of a surface is more stable, reduces pressure to avoid deformation and damage of the interventional guide wire 1, and can effectively clamp interventional guide wires 1 of different diameters. The multi-group rotating arrangement applies forces in more directions to the clamping and fixation of the interventional guide wire 1, further reduces the possibility of displacement of the interventional guide wire 1, and achieves a better clamping effect.

[0041] The rotation of the fixed chamber 18 drives the piston push rod 17 to push outward, and the air inside the piston chamber 16 is squeezed and passed into the first airbag 13 and the second airbag 14 through the airway tube 15. Due to the insertion of the interventional guide wire 1, the rotation angle of the knob 5 is smaller than that in the initial state, and the distance pushed by the piston push rod 17 is shorter, which reduces the air input from the piston chamber 16 into the first airbag 13 and the second airbag 14. At this time, the first airbag 13 and the second airbag 14 only play a limiting role, and heparin is injected into the drug liquid tank 10. The lower side of the drug liquid tank 10 is connected to the valve 12 through the liquid guide tube 11. The valve 12 is squeezed open by the two first airbags 13 to let out heparin. The anticoagulant effect of heparin can reduce the coagulation of platelets on the balloon catheter 2 and also play a certain lubricating role. The second airbag 14 is slightly longer than the first airbag 13. The heparin flows into the gap between the first airbag 13 and the second airbag 14, and then continues to flow to the bottom of the shell 4 and flows out through the insertion tube 6. The interior of the insertion tube 6 is arranged with dense arc-shaped protrusions, which can effectively reduce the insertion friction of the balloon catheter 2. The heparin passes through it to play a lubricating role while also cleaning the outside of the balloon catheter 2.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coronary intervention guidewire fixing device, comprising a housing (4), a conical connector (3) fixedly mounted on one end of the housing (4), a through hole being provided at the tip of the conical connector (3), and a knob (5) rotatably mounted on the other end of the housing (4), characterized in that: A connecting column (23) is fixedly mounted on one end of the knob (5) located inside the housing (4); a fixing chamber (18) rotatably connected to the inner wall of the housing (4) is fixedly mounted on one end of the connecting column (23) away from the knob (5); through grooves are provided on the side walls at both ends of the connecting column (23) and the fixing chamber (18); A rotating disk (19) is provided at both the front and rear ends of the fixed bin (18), and a plurality of arc-shaped through grooves are provided on the rotating disk (19) in a circular array. The arc-shaped through grooves on the two rotating disks (19) rotate in opposite directions. The rotating disk (19) on the front side is fixedly connected to the inner wall of the housing (4), and the rotating disk (19) on the rear side is fixedly connected to the inner wall of the fixed bin (18). A plurality of groups of sliding clamping assemblies are provided between the two groups of rotating disks (19), and each group of the sliding clamping assemblies is composed of a plurality of sliding clamping blocks (20) distributed in an annular shape. Two adjacent sliding clamping blocks (20) on the front and rear sides are connected by sliding posts (21) fixedly mounted on the sliding clamping blocks (20), and the arc-shaped through grooves on the rotating disk (19) are slidably connected to the corresponding sliding posts (21); A spiral rubber belt (22) is fixedly connected between the front and rear groups of rotating disks (19), and the spiral rubber belt (22) passes through the centers of the multiple groups of sliding clamping assemblies in sequence.

2. The coronary intervention guidewire fixation device according to claim 1, characterized in that: The plurality of groups of sliding clamping components are distributed in a staggered manner.

3. The coronary intervention guidewire fixation device according to claim 1, characterized in that: A cross groove is formed at one end of the fixed chamber (18) close to the conical joint (3), and a plurality of groups of piston push rods (17) are slidably mounted in a circular array in the cross groove. One end of the piston push rod (17) away from the cross groove is sealingly slidably connected to a piston cavity (16) fixedly mounted on the inner wall of the housing (4). An air guide tube (15) is connected to the interior of the piston cavity (16), and one end of the air guide tube (15) away from the piston cavity (16) is connected to a clamping mechanism mounted at the front of the interior of the housing (4).

4. The coronary intervention guidewire fixation device according to claim 3, characterized in that: The rotating disk (19) on the front side is fixedly connected to the plurality of piston chambers (16) via slots provided on the fixed bin (18).

5. The coronary intervention guidewire fixation device according to claim 1, characterized in that: The clamping mechanism comprises a first airbag (13) and a second airbag (14) glued to the front end of the interior of the shell (4); the first airbag (13) and the second airbag (14) are provided in multiple groups and are respectively connected to corresponding air guide tubes (15); a gap is provided between the first airbag (13) and the second airbag (14); and a lubrication mechanism is provided between the multiple first airbags (13).

6. The coronary intervention guidewire fixation device according to claim 5, characterized in that: The length of the second airbag (14) is longer than the length of the first airbag (13).

7. The coronary intervention guidewire fixation device according to claim 5, characterized in that: The lubricating mechanism comprises a plurality of liquid guiding tubes (11) arranged between a plurality of first air bags (13), a valve (12) being installed at the lower end of the liquid guiding tubes (11), and the upper ends of the plurality of liquid guiding tubes (11) being connected to a medicine liquid tank (10) after penetrating the side wall of the housing (4), wherein an anticoagulant is stored inside the medicine liquid tank (10).

8. The coronary intervention guidewire fixation device according to claim 7, characterized in that: The anticoagulant is heparin which also has a lubricating effect.

9. The coronary intervention guidewire fixation device according to claim 7, characterized in that: The lower end of the outer shell (4) is fixedly connected to an insertion tube (6).

10. The coronary intervention guidewire fixation device according to claim 1, characterized in that: Two groups of brackets (7) are fixedly mounted on the lower end of the housing (4), a support column (8) is fixedly mounted on the lower end of the bracket (7), and a support plate (9) is fixedly connected to the lower end of the support column (8).

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