A cardiovascular dilator

Abstract

The present invention discloses a cardiovascular dilator, which belongs to the technical field of medical devices. It comprises a syringe, a first dilator and a second dilator. The second dilator is provided with multiple layers of additional dilators, which are arranged at intervals along the axis direction of the second dilator; an air bag is arranged in the additional dilator; each layer of the additional dilator is composed of a plurality of elastic arc-shaped protrusions evenly distributed, and the arc-shaped protrusions of two adjacent layers of the additional dilator are staggered with each other, and a liquid outlet is arranged at the lower end of the second dilator. The second dilator of the cardiovascular dilator of the present invention performs preliminary dilation, and the additional dilator in the second dilator slowly dilates the blood vessels, which can effectively prevent damage to the blood vessels; channels are formed between the additional dilators, which effectively prevent blockage of the blood vessels, so that the blood vessels can still circulate normally while dilating, and the squeezed and crushed intravascular vegetation is taken out, making the operation of medical personnel easier, and the field of vision and operation space wider.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a cardiovascular dilator. Background Art

[0002] The heart is a hollow muscular organ located in the middle of the chest cavity. It is divided into two chambers by a partition. Each chamber is divided into two parts: the atrium located in the upper part and the ventricle located in the lower part. The atrium collects blood entering the heart, and the ventricle ejects blood out of the heart. The inlet and outlet of the ventricle have valves to ensure the unidirectional flow of blood. The cardiovascular system is composed of the heart and blood vessels. The blood vessels include arteries, veins and capillaries. When the cardiovascular system is dilated clinically, most patients install stents or balloons in their cardiovascular system. However, because the cardiovascular pipeline is relatively thin, it is difficult to manually install stents or balloons. In addition, the balloon completely blocks blood circulation during the dilation process, which can easily cause symptoms such as hypotension, loss of consciousness, and convulsions. In addition, the extrusions in the blood vessels cannot be completely removed due to squeezing and crushing, which is not conducive to the smooth progress of the operation and increases the difficulty of the work for medical staff.

[0003] Publication number CN210963513U discloses a cardiovascular dilator, which has a cavity on the expansion part, and a plurality of hemispherical protrusions are evenly arranged on the outside of the expansion part. A guide part is connected to one side of the expansion part, and a fixed block is fixedly installed on the other side of the expansion part. This technical solution enables the connection plate to be pushed forward by rotating the fixed block through a screw to achieve blood vessel expansion. Publication number CN109432579A discloses a cardiovascular dilator, which includes a catheter, a dilator, an introduction head, an airway tube and a compression cylinder. The dilator is installed on the outer wall of the catheter, and the output end of the compression cylinder inside the catheter is connected to the dilator. This technical solution is to push the slider through the compression cylinder to drive the dilator to expand outward. In this technical solution, a spatial drop will be formed between the dilator and the introduction head, which is easy to damage the blood vessel, and the structure is complex. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a cardiovascular dilator which has a simple structure, can buffer transition, and can prevent vascular damage, and is convenient and quick.

[0005] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0006] A cardiovascular expander comprises a syringe, a first expander and a second expander, wherein the first expander is a cylindrical expander and the second expander is a conical expander; one end of the first expander is fixedly connected to the syringe, and the other end of the first expander is integrally formed with the second expander; a plurality of additional expanders are arranged on the second expander, and the plurality of additional expanders are arranged at intervals along the axis direction of the second expander; an air bag is arranged in the additional expander; a catheter is arranged in the first expander, and a connecting tube is arranged at the lower end of the catheter, and the connecting tube is communicated with the air bag; a soft infusion tube is sealed in the catheter, and the upper end of the infusion tube is sealed and connected to the top of the syringe; a liquid outlet is arranged at the lower end of the second expander, and the lower end of the infusion tube is connected to the liquid outlet at the lower end of the second expander;

[0007] The additional expansion body is provided with a first sensor and a second sensor, and the first sensor and the second sensor are arranged opposite to each other in the additional expansion body; a display with control is provided on the top of the syringe; the first sensor and the second sensor are both connected to the display with control signals;

[0008] The syringe includes a piston tube and a push rod, a push plate is provided on the push rod, and a locking device is provided on the syringe, and the locking device includes a connecting rod, a running groove, a fixing plate and a rotating handle; the connecting rod includes a horizontal portion and a vertical portion perpendicular to the horizontal portion; the horizontal portion and the vertical portion are connected to form an inverted "T"-shaped connecting rod, the running groove is arranged in the piston tube and the horizontal portion of the connecting rod slides in the running groove along the vertical direction; the fixing plates are multiple and are evenly arranged in the running groove along the vertical direction; the vertical portion of the connecting rod passes through the push plate; the rotating handle is arranged on the top of the push plate and is perpendicular to the vertical portion of the connecting rod.

[0009] Furthermore, each layer of the additional expansion body is composed of a plurality of elastic arc-shaped protrusions, and the plurality of arc-shaped protrusions are evenly distributed in a ring shape with the second expansion body as the center point.

[0010] Furthermore, the arc-shaped protrusions of two adjacent layers of additional expansion bodies are distributed alternately.

[0011] Furthermore, there is a gap between two adjacent arc-shaped protrusions.

[0012] Furthermore, a plurality of fixed plates are evenly arranged in the operating groove along the vertical direction to form two opposite rows; an operating space is formed between the two rows of fixed plates; and the horizontal portion of the linkage rod vertically operates in the operating space.

[0013] Furthermore, the first sensor and the second sensor are magnetostrictive displacement sensors.

[0014] Furthermore, the diameter of the first expansion body is not greater than the diameter of the second expansion body.

[0015] Furthermore, the first expansion body, the second expansion body and the additional expansion body are all made of flexible biological materials.

[0016] The cardiovascular dilator of the present invention has the following beneficial effects:

[0017] (1) The second expander performs preliminary expansion. The additional expander in the second expander can inflate the airbag through an external syringe to slowly expand the blood vessel. The additional expander is arc-shaped and has a certain cushioning property, which can effectively prevent blood vessel damage.

[0018] (2) The additional expanders are multi-layered and staggered, which can form channels between the additional expanders while expanding, effectively preventing blood vessel blockage, allowing normal blood circulation while the blood vessels expand, and removing squeezed and broken vascular vegetation, making it easier for medical personnel to operate, and providing a wider field of vision and operating space.

[0019] (3) Two displacement sensors are provided in the additional expander, and the displacement sensors transmit the positions of the two to a display with control for display, so that medical personnel can observe and understand the expansion of the blood vessels more intuitively.

[0020] (4) A locking device is provided on the syringe, which can quickly, simply and conveniently fix the syringe, that is, maintain the expansion degree of the blood vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the structure of the present invention when it is working;

[0023] Figure 2 It is a static schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the syringe in the present invention;

[0025] Figure 4 is a bottom view of the second expansion body of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the running tank in the present invention;

[0027] 1 first expansion body, 2 second expansion body, 3 additional expansion body, 4 air bag, 5 catheter, 6 connecting tube, 7 first sensor, 8 second sensor, 9 display, 10 syringe, 11 infusion tube, 12 liquid outlet;

[0028] 301 arc convex;

[0029] 1001 piston tube, 1002 push rod, 1003 connecting rod, 1004 running groove, 1005 fixing plate, 1006 rotating handle, 1007 horizontal part, 1008 vertical part, 1009 running space. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0031] Example 1

[0032] A cardiovascular dilator, such as Figure 1-5 As shown, it includes a syringe 10, a first expansion body 1 and a second expansion body 2, wherein the first expansion body 1 is a cylindrical expansion body, and the second expansion body 2 is a conical expansion body; one end of the first expansion body 1 is fixedly connected to the syringe 10, and the other end of the first expansion body 1 is integrally formed with the second expansion body 2; a plurality of additional expansion bodies 3 are arranged on the second expansion body 2, and the plurality of additional expansion bodies 3 are arranged at intervals along the axis direction of the second expansion body 2; an air bag 4 is arranged in the additional expansion body 3; a catheter 5 is arranged in the first expansion body 1, and a connecting pipe 6 is arranged at the lower end of the catheter 5, and the ... The connecting tube 6 is communicated with the airbag 4; a soft infusion tube 11 is sealed in the catheter 5, and the upper end of the infusion tube 11 is sealed and connected to the top of the syringe 10; a liquid outlet 12 is provided at the lower end of the second expansion body 2, and the lower end of the infusion tube 11 is connected to the liquid outlet 12 at the lower end of the second expansion body 2; a connector is provided at the end of the infusion tube 11 at the top of the syringe 10; a connector is also provided at the upper end of the soft infusion tube 11 in the catheter 5, which can be connected to an external infusion tube for infusion, and can also be directly blocked to shut down the infusion.

[0033] The additional expansion body 3 is provided with a first sensor 7 and a second sensor 8, and the first sensor 7 and the second sensor 8 are arranged opposite to each other in the additional expansion body 3; a display 9 with control is provided on the top of the syringe 10; the first sensor 7 and the second sensor 8 are both connected to the display 9 with control signals;

[0034] The syringe 10 includes a piston tube 1001 and a push rod 1002, the push rod 1002 is provided with a push plate, the syringe 10 is provided with a locking device, the locking device includes a linkage rod 1003, a running groove 1004, a fixing plate 1005 and a rotating handle 1006; the linkage rod 1003 includes a horizontal portion 1007 and a vertical portion 1008 which is perpendicular to the horizontal portion 1007; the horizontal portion 1007 and the vertical portion 1008 are connected to form an inverted "T"-shaped linkage The rod 1003, the running groove 1004 is arranged outside the piston tube 1001 and the horizontal part 1007 of the linkage rod 1003 slides in the running groove 1004 in the vertical direction; the fixing plates 1005 are multiple and are evenly arranged in the running groove 1004 in the vertical direction; the vertical part 1008 of the connecting rod passes through the push plate; the rotating handle 1006 is arranged on the top of the push plate and is perpendicular to the vertical part 1008 of the linkage rod 1003. Multiple fixing plates 1005 are evenly arranged in the running groove 1004 in the vertical direction to form two opposite rows; a running space 1009 is formed between the two rows of fixing plates 1005; the horizontal part 1007 of the linkage rod 1003 runs vertically in the running space 1009. During use, the push plate and piston tube 1001 are pushed to allow gas to enter the airbag 4 from the catheter 5 to expand the blood vessel. When the expansion reaches a certain degree, the handle 1006 is directly turned to rotate the linkage rod 1003 from the running groove 1004 directly to the pores between the fixed plates 1005, and the push plate is fixed to achieve the fixed degree of gas propulsion, so that the inflation degree of the airbag 4 is maintained, the blood vessel expansion is fixed, and the medical staff can perform other operations. When the blood vessel needs to be retracted, the handle 1006 is turned to rotate the linkage rod 1003 from the pores between the fixed plates 1005 to the running groove 1004, and the push handle is pulled to deflate the airbag 4, and additional expansion and retraction are performed to achieve the retraction of the blood vessel.

[0035] In the present invention, each layer of the additional expansion body 3 is composed of a plurality of elastic arc-shaped protrusions 301, and the plurality of arc-shaped protrusions 301 are evenly distributed in a ring shape with the second expansion body 2 as the center point. The arc-shaped protrusions 301 of two adjacent layers of the additional expansion bodies 3 are staggered and distributed with each other; there is a gap between two adjacent arc-shaped protrusions 301. This structure can form a channel between the additional expansion bodies 3 while the blood vessels are dilated, effectively preventing the blockage of the blood vessels, allowing the blood vessels to expand while still allowing normal blood circulation, taking out the squeezed and broken intravascular vegetation, making it easier for medical personnel to operate, and providing a wider field of vision and operating space.

[0036] In the present invention, the first sensor 7 and the second sensor 8 are magnetostrictive displacement sensors. The magnetostrictive displacement sensor uses internal non-contact measurement and control technology to accurately detect the absolute position of the movable magnetic ring to measure the actual displacement value of the detected product. The present invention adopts that the additional expansion body 3 can be moved by the agitation of the airbag 4, and the distance is measured by the first sensor 7 and the second sensor 8. The first sensor 7 and the second sensor 8 have high precision, and the distance signal between the two expansion bodies is quickly transmitted to the display 9 with control, and displayed on the display 9 with control, which is convenient for observation and recording. In addition, in the present invention, the display 9 with control is a display 9 and a controller in one. The main function of the controller of the present invention is to receive the signals of the first sensor 7 and the second sensor 8 and convert them into digital signals, and input them into the display 9 for display. The controller and its functions are prior art, so the signals and structures of the controller are not repeated here.

[0037] In the present invention, the diameter of the first expansion body 1 is not greater than the diameter of the second expansion body 2, and the first expansion body 1, the second expansion body 2 and the additional expansion body 3 are all made of flexible biomaterials. The use of flexible biomaterials is not easy to damage blood vessels, and has the function of protecting blood vessels, such as the biological needle of an indwelling needle. By setting the first expansion body 1, the second expansion body 2, and the additional expansion body 3 to be combined, and the expansion degrees of the three are different, the occurrence of damage to the blood vessel to be expanded due to sudden large expansion force can be reduced. At the same time, the multiple layers of additional expansion bodies 3 are arranged at intervals along the axis direction of the second expansion body 2, and each layer of additional expansion body 3 is composed of a plurality of elastic arc-shaped protrusions 301, and the plurality of arc-shaped protrusions 301 are evenly distributed in a ring shape with the second expansion body 2 as the center point, and the arc-shaped protrusions 301 of the adjacent two layers of additional expansion bodies 3 are staggered. That is, a channel is formed between the arc-shaped protrusions 301, which can form a blood channel on the outside of the expander, and can effectively prevent complications caused by blood vessel blockage during vascular expansion. At the same time, the arc-shaped protrusions 301 squeeze and crush the vegetation in the blood vessel, and the crushed matter falls into the channel between the arc-shaped protrusions 301 and is discharged with the flow of blood. In addition, the catheter 5 of the present invention is also sealed with an infusion tube 11, which can transport drugs, such as saline, into the blood vessel to prevent blood from coagulating into thrombus.

[0038] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A cardiovascular dilator, characterized in that: It comprises a syringe, a first expansion body and a second expansion body, wherein the first expansion body is a cylindrical expansion body and the second expansion body is a conical expansion body; one end of the first expansion body is fixedly connected to the syringe, and the other end of the first expansion body is integrally formed with the second expansion body; a plurality of additional expansion bodies are arranged on the second expansion body, and the plurality of additional expansion bodies are arranged at intervals along the axis direction of the second expansion body; an air bag is arranged in the additional expansion body; a catheter is arranged in the first expansion body, and a connecting tube is arranged at the lower end of the catheter, and the connecting tube is communicated with the air bag; a soft infusion tube is sealed in the catheter, and the upper end of the infusion tube is sealed and connected to the top of the syringe; a liquid outlet is arranged at the lower end of the second expansion body, and the lower end of the infusion tube is connected to the liquid outlet at the lower end of the second expansion body; The additional expansion body is provided with a first sensor and a second sensor, and the first sensor and the second sensor are arranged opposite to each other in the additional expansion body; a display with control is provided on the top of the syringe; the first sensor and the second sensor are both connected to the display with control signals; The syringe includes a piston tube and a push rod, a push plate is provided on the push rod, and a locking device is provided on the syringe, and the locking device includes a connecting rod, a running groove, a fixing plate and a rotating handle; the connecting rod includes a horizontal portion and a vertical portion perpendicular to the horizontal portion; the horizontal portion and the vertical portion are connected to form an inverted "T"-shaped connecting rod, the running groove is arranged in the piston tube and the horizontal portion of the connecting rod slides in the running groove along the vertical direction; the fixing plates are multiple and are evenly arranged in the running groove along the vertical direction; the vertical portion of the connecting rod passes through the push plate; the rotating handle is arranged on the top of the push plate and is perpendicular to the vertical portion of the connecting rod.

2. The cardiovascular dilator according to claim 1, characterized in that: Each layer of the additional expansion body is composed of a plurality of elastic arc-shaped protrusions, and the plurality of arc-shaped protrusions are evenly distributed in a ring shape with the second expansion body as the center point.

3. The cardiovascular dilator according to claim 2, characterized in that: The arc-shaped protrusions of two adjacent layers of additional expansion bodies are distributed alternately.

4. The cardiovascular dilator according to claim 2, characterized in that: There is a gap between two adjacent arc-shaped protrusions.

5. The cardiovascular dilator according to claim 4, characterized in that: A plurality of fixed plates are evenly arranged in the running groove along the vertical direction to form two opposite rows; a running space is formed between the two rows of fixed plates; and the horizontal portion of the linkage rod runs vertically in the running space.

6. The cardiovascular dilator according to claim 1, characterized in that: The first inductor and the second inductor are magnetostrictive displacement sensors.

7. The cardiovascular dilator according to claim 1, characterized in that: The diameter of the first expansion body is not greater than the diameter of the second expansion body.

8. The cardiovascular dilator according to claim 1, characterized in that: The first expansion body, the second expansion body and the additional expansion body are all made of flexible biological materials.

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