CN217310716U - Branch type blood vessel stent and ball expand formula blood vessel stent component - Google Patents

Abstract

The utility model discloses at first, provide a branching type vascular support, be responsible for including inside hollow support, the support is responsible for and is equipped with the bleeder, the support be responsible for with the inside intercommunication of bleeder. Through set up the lateral pipe on the support is responsible for, can support the protection to main trunk of blood vessel and branch simultaneously to the branching department of femoral artery or iliac artery, keep lumen blood stream unobstructed. The utility model also provides a ball expands formula blood vessel support subassembly, expand the device and as above including the ball branch type blood vessel support, the ball expands the device and includes the sacculus pipe, be equipped with first branch pipe and second branch pipe on the sacculus pipe, be equipped with respectively on first branch pipe and the second branch pipe and be used for launching the first sacculus and the second sacculus of the support person in charge and bleeder, be equipped with water inlet channel on the sacculus pipe, water inlet channel with first sacculus and second sacculus are linked together. For introducing the branched vascular stent into a blood vessel and deploying it with a balloon.

Description

Branch type blood vessel support and ball expansion type blood vessel support component

Technical Field

The utility model relates to the technical field of medical equipment, particularly, for a branching type vascular support and ball expand formula vascular support subassembly.

Background

The intravascular stent is characterized in that an inner stent is arranged in a lesion section on the basis of the dilatation and the forming of a balloon of a lesion lumen of a stenosis or occlusion section so as to achieve the purposes of supporting a blood vessel of the stenosis occlusion section, reducing the elastic retraction and the reshaping of the blood vessel and keeping the blood flow of the lumen smooth. The existing blood vessel stent can be divided into a self-expanding type and a balloon expanding type according to the expanding mode in the blood vessel. The former can expand in the blood vessel after being released, and the latter has no elasticity and is attached to the blood vessel by expanding to a certain diameter value by the balloon. It is mainly divided into peripheral artery and vein stent, coronary artery stent, cerebrovascular stent, renal artery stent, aorta stent, etc. according to the using parts.

However, if the lesion is located at the bifurcation of the iliac artery and the femoral artery, because the inner diameters of the main artery and the branch blood vessels are different (such as the common femoral artery, the superficial femoral artery and the deep femoral artery), the main blood vessel and the branch blood vessels need to be supported and protected at the same time. Therefore, the traditional linear type blood vessel stent can not meet the use requirements of patients of the type, and the branch type blood vessel stent for supporting and protecting the bifurcation of the iliac artery and the femoral artery is lacked in the prior art.

Therefore, there is a need for a branched stent and a balloon expandable stent assembly suitable for the bifurcation of iliac artery and femoral artery.

Disclosure of Invention

In view of this, the utility model aims to provide a branch type blood vessel support and ball expand formula blood vessel support subassembly can support the expansion simultaneously to blood vessel trunk and blood vessel branch road, keeps the lumen blood flow unobstructed.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model discloses at first provided a branching type vascular support, be responsible for including inside hollow support, the support is responsible for and is equipped with the bleeder, the support be responsible for with the inside intercommunication of bleeder.

Further, the main stent tube comprises an upper tube section and a lower tube section which are communicated with each other, the diameter of the upper tube section is larger than that of the lower tube section in the unfolded configuration, and the diameter of the branch tube is smaller than that of the lower tube section.

Further, in the unfolding configuration, an included angle between the axis of the branch pipe and the axis of the lower pipe section is an acute angle.

Furthermore, an opening for blood circulation is arranged at the joint of the main pipe of the bracket and the branch pipe.

Further, the outer walls of the main pipe of the stent and the outer walls of the branch pipes are provided with covering films.

The utility model also provides a ball expands formula vascular bracket component, expand the device and as above arbitrary the branch type vascular bracket, the ball expands the device and includes the sacculus pipe, be equipped with first branch pipe and second branch pipe on the sacculus pipe, be equipped with respectively on first branch pipe and the second branch pipe and be used for launching the first sacculus and the second sacculus of support person in charge and bleeder, be equipped with the passageway of intaking on the sacculus pipe, the passageway of intaking with first sacculus and second sacculus are linked together.

Further, a water injection joint is arranged on a water injection port of the balloon catheter.

Furthermore, the two ends of the first saccule and the second saccule are respectively provided with a developing mark block for developing and positioning.

Furthermore, the ball expands the device still includes the metal seal wire that is used for leading to the sacculus pipe, be equipped with guide channel in sacculus pipe, first branch pipe and the second branch pipe.

The beneficial effects of the utility model reside in that:

the utility model discloses a branching type vascular stent through set up the bleeder on the support is responsible for, can support the protection simultaneously to femoral artery or iliac artery's branching department to blood vessel trunk and branch, keeps the lumen blood flow unobstructed.

The utility model discloses a ball expands formula blood vessel support subassembly at first with the blood vessel support suit on the sacculus pipe that is equipped with the sacculus, with the leading-in blood vessel of sacculus pipe set for the position after, aerify first sacculus and second sacculus and make first sacculus and second sacculus inflation respectively and be responsible for the support and the bleeder struts, can support blood vessel trunk and branch simultaneously, keep lumen blood flow unobstructed.

Drawings

In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:

FIG. 1 is a schematic view of an embodiment of a mid-branch stent according to the present invention in an expanded state;

FIG. 2 is a schematic view of an embodiment of the ball expanding device of the present invention;

FIG. 3 is a schematic view of a branched stent being expanded by a balloon;

fig. 4 is a schematic view of a branched stent placed in a blood vessel.

Description of reference numerals:

1-main pipe of support; 101-upper pipe section; 102-a lower pipe section; 2-a branch pipe; 3-a balloon catheter; 301-a first branch tube; 3011-a first balloon; 302-a second branch; 3021-a second balloon; 4-water injection joint; 5-vessel wall.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Example 1 branched vascular Stent

Fig. 1 is a schematic view showing a deployment state of an embodiment of the branched blood vessel stent of the present invention. The branch type blood vessel support of this embodiment includes that inside hollow support is responsible for 1, the support is responsible for 1 and is equipped with bleeder 2, the support is responsible for 1 and the inside intercommunication of bleeder 2, in this embodiment, the support is responsible for 1 and is equipped with the opening with the junction of bleeder 2, the circulation of the blood of being convenient for, if bleeder 2 is directly responsible for 1 outer wall connection with netted support, although blood can circulate through the hole between the netted metal, but long-time after using, the thrombus that forms is piled up at the junction easily to various materials in the blood, the event sets up the opening that does benefit to the blood circulation at the junction of the two. Specifically, what the intravascular stent of this embodiment adopted is netted metal stent main body, and metal stent main body is folding setting and the suit is in the sacculus position department of sacculus pipe before getting into the blood vessel, and the support is responsible for 1 and 2 outer walls of bleeder and is equipped with the tectorial membrane, can prevent that the support outer wall fish tail blood vessel, plays the guard action to the blood vessel. The branched vessel stent is shown in fig. 3 when it is expanded by the balloon.

Further, as shown in fig. 1, the stent main tube 1 of the present embodiment includes an upper tube section 101 and a lower tube section 102 communicating with each other, and in the deployed configuration, the upper tube section 101 has a larger diameter than the lower tube section 102, and the branch tubes 2 have a smaller diameter than the lower tube section 102. In order to adapt to the sizes of the upper and lower inner diameters of the main blood vessels of the femoral artery and the iliac artery and the sizes of the inner diameters of the branch blood vessels, the stent can better support the parts with different inner diameters of the blood vessels by arranging the main stent tube 1 into the upper tube section 101 and the lower tube section 102 which are communicated with each other.

Further, as shown in fig. 1, in the branch type vessel stent of the present embodiment, in the deployed configuration, the axis of the branch tube 2 and the axis of the lower tube segment 102 form an acute angle. Can be more suitable for the trend of the blood vessels at the bifurcations of the femoral artery and the iliac artery.

Example 2 balloon expandable vascular Stent Assembly

The utility model also discloses a ball expands formula vascular bracket component, it includes the ball and expands the device and branch type vascular bracket as disclosed in embodiment 1, as shown in fig. 2, the ball of this embodiment expands the device and includes sacculus pipe 3, be equipped with first branch pipe 301 and second branch pipe 302 on the sacculus pipe 3, the one end of sacculus pipe 3 is equipped with the water inlet, the exit end of first branch pipe 301 and second branch pipe 302 keeps sealing, prevent that water from flowing out from two ports, be equipped with first sacculus 3011 and the second sacculus 3021 that is used for launching support person in charge 1 and bleeder 2 on first branch pipe 301 and the second branch pipe 302 respectively, be equipped with the water inlet channel on the sacculus pipe 3, the water inlet channel is linked together with first sacculus 3011 and second sacculus 3021.

Further, as shown in fig. 2 and fig. 4, a water injection joint 4 is provided on a water injection port of the balloon catheter 3 of this embodiment, the balloon dilation apparatus of this embodiment further includes an injection and suction apparatus 5 for injecting water into the first balloon 3011 and the second balloon 3021 and sucking out water in the first balloon 3011 and the second balloon 3021, a cavity is provided in the injection and suction apparatus 5, a piston 6 slidably fitted to an inner wall of the cavity is provided in the cavity, a push rod 7 is provided on the piston 6, the balloon can be inflated or the water in the inflated balloon can be sucked out and restored by pushing and pulling the push rod 7, an internal thread is provided at an end of the injection and suction apparatus 5, and an external thread matched with the internal thread is provided on the water injection joint 4. The threaded connection is convenient for fixing the injection and suction device 5 and the water injection connector 4, and is convenient for operation. In addition, the balloon dilatation device of the present embodiment further comprises a metal guide wire for guiding, and guide channels are arranged in the balloon catheter 3, the first branch pipe 301 and the second branch pipe 302. Specifically, in the present embodiment, the balloon catheter 3 is configured as a double-layer tube structure, wherein a water inlet channel is formed between the inner-layer tube and the outer-layer tube, the inner-layer tube is a guide channel, and openings for water to pass through are provided at positions of the first balloon 3011 and the second balloon 3021 on the first branch tube 301 and the second branch tube 302, so that water entering through the water inlet channel can enter the first balloon 3011 and the second balloon 3021 from the openings and inflate the same because the positions between the inner-layer tube and the outer-layer tube at the outlet ends of the first branch tube 301 and the second branch tube 302 are kept closed.

Further, the two ends of the first balloon 3011 and the second balloon 3021 of the present embodiment are both provided with a developing mark block for developing, which facilitates positioning.

The steps of supporting the blood vessel by adopting the ball-expanding type blood vessel bracket component of the embodiment are as follows: firstly, the branch type intravascular stent under a folded state is sleeved on the balloon position of a balloon catheter, wherein a stent main tube is sleeved on a first balloon, a branch tube is sleeved on a second balloon, a metal guide wire is adopted to guide a first branch tube and a second branch tube of the balloon catheter into a main line blood vessel and a branch blood vessel respectively, a pressure pump is adopted to inject water into the first balloon and the second balloon to enable the first balloon and the second balloon to expand to drive the stent main tube and the branch tube to expand, after the stent main tube and the branch tube are completely expanded, water on the first balloon and in the second balloon is sucked out and recovered, and finally, the balloon catheter is moved out of a body, so that a main blood vessel and branches of a femoral artery or an iliac artery can be simultaneously supported, and the blood flow of a lumen is kept smooth.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims (8)

1. A branched vascular stent, characterized in that: the support comprises a hollow support main pipe (1), wherein a branch pipe (2) is arranged on the support main pipe (1), and the support main pipe (1) is communicated with the inside of the branch pipe (2);

the stent main pipe (1) comprises an upper pipe section (101) and a lower pipe section (102) which are communicated with each other, the diameter of the upper pipe section (101) is larger than that of the lower pipe section (102) in a deployed configuration, and the diameter of the branch pipe (2) is smaller than that of the lower pipe section (102).

2. The branched stent according to claim 1, wherein: in the unfolding configuration, the axis of the branch pipe (2) and the axis of the lower pipe section (102) form an acute angle.

3. The branched stent according to claim 1, wherein: an opening for blood circulation is arranged at the joint of the main pipe (1) and the branch pipe (2).

4. The branched stent according to claim 1, wherein: the outer walls of the main pipe (1) and the branch pipe (2) of the bracket are provided with a film.

5. A ball expands formula blood vessel support subassembly which characterized in that: the branch type intravascular stent comprises a ball expanding device and the branch type intravascular stent as claimed in any one of claims 1 to 4, wherein the ball expanding device comprises a balloon catheter (3), a first branch pipe (301) and a second branch pipe (302) are arranged on the balloon catheter (3), a first balloon (3011) and a second balloon (3021) which are used for unfolding the stent main pipe (1) and the branch pipes (2) are respectively arranged on the first branch pipe (301) and the second branch pipe (302), a water inlet channel is arranged on the balloon catheter (3), and the water inlet channel is communicated with the first balloon (3011) and the second balloon (3021).

6. The ball expanded vascular stent assembly of claim 5, wherein: a water injection joint (4) is arranged on a water injection port of the balloon catheter (3).

7. The ball expanded vascular stent assembly of claim 5, wherein: and developing mark blocks for developing and positioning are arranged at two ends of the first balloon (3011) and the second balloon (3021).

8. The ball expanded vascular stent assembly of claim 5, wherein: the ball expands the device still includes the metal seal wire that is used for leading to sacculus pipe (3), be equipped with guide channel in sacculus pipe (3), first branch pipe (301) and second branch pipe (302).

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