Blood vessel plugging device

Abstract

The utility model discloses a blood vessel occluder which comprises a catheter seat and a catheter fixedly installed at one end of the catheter seat, when the blood vessel occluder is used, a balloon extends into a blood vessel, liquid or gas is injected into the balloon through a balloon pressure filling and releasing connector, so that the balloon is expanded, barb-shaped hard strips on the surface of the balloon are opened in an umbrella shape, the balloon is pulled, and the barb-shaped hard strips are pricked into the inner wall of the blood vessel. The lead is tightened, so that the barb-shaped hard strips tightly hook the inner wall of the blood vessel without loosening, the inner wall of the blood vessel is closed, and the barb-shaped hard strips are separated; the medical adhesive for sealing the blood vessel is injected from the adhesive injection port of the catheter seat, the balloon is decompressed and contracted, the balloon is taken out from the blood vessel, the leads are tightened to close the blood vessel again, the tightening ring is pushed to be tightly attached to the outer wall of the blood vessel, the leads are tightened, and the redundant leads are cut off. According to the blood vessel plugging device, after the blood vessel closing process is completed, the barb-shaped hard strips, the blood vessel sealing medical adhesive, the line tightening ring and part of the lead are left in the body of a patient and can be decomposed and metabolized by the human body after a period of time, and secondary taking out is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a blood vessel occluder. Background Art

[0002] Percutaneous access to the vascular system for vascular device delivery is a common medical procedure. Typically, this involves puncturing the blood vessel with a hollow needle and then introducing an introducer sheath to open the puncture site for the introduction of a catheter and guidewire to guide through the vascular system to facilitate delivery. For example, in many cases, vascular access requires the introduction of a catheter and guidewire through the femoral artery. Once the procedure is complete, the device is removed from the patient and pressure is applied to the puncture site to stop bleeding.

[0003] Manual compression hemostasis was used earlier to stop bleeding at the puncture point after femoral artery intervention. Manual compression hemostasis has been used clinically for a long time, but long-term compression hemostasis and bed rest not only increase the workload of medical staff, but also increase the pain of patients.

[0004] To overcome the shortcomings of manual compression hemostasis, percutaneous arterial occlusion devices were introduced. The use of vascular occlusion devices can quickly achieve hemostasis without compressing the blood vessels or with minimal compression, and is not affected by continuous anticoagulation. The application of occlusion technology is the future development direction of arterial hemostasis, which can shorten the time of hemostasis and bed rest. On this basis, it reduces the patient's pain and the intensity of medical care.

[0005] Existing vascular occluders have a complex structure and are not convenient to operate. When the vascular occluder is inserted into a blood vessel that needs to stop bleeding, the hemostasis operation process is long and may cause a large amount of blood loss. Stopping bleeding at the bleeding site only by suturing or external bonding has a poor hemostatic effect, and it is easy for some impurities of the hemostat itself to remain in the blood vessel, and it is not easy to degrade.

[0006] Therefore, we proposed a vascular occluder to solve the above problems. Utility Model Content

[0007] The utility model provides a vascular occluder, which solves the problems mentioned in the above background technology that the existing vascular occluders have complex structures and are not convenient to operate. When the vascular occluder is inserted into a blood vessel that needs to stop bleeding, the hemostasis operation process is relatively long, which may cause a large amount of blood loss. Stopping bleeding at the bleeding site only by suturing or external bonding has a poor hemostatic effect, and some impurities of the hemostat itself are easily left in the blood vessel, and it is not easy to degrade.

[0008] The utility model provides the following technical solution: a vascular occluder, comprising a catheter seat and a catheter fixedly mounted at one end of the catheter seat, a balloon fixedly mounted at one end of the catheter, a guide wire guide port opened at one end of the catheter seat, a balloon inflation and relief interface and a glue injection port opened at the side wall of the catheter seat respectively, a glue spray port opened at one end of the catheter side wall, a catheter reinforcement piece sleeved on the outer side of the catheter, a hemostasis component installed on the outer side of the catheter, and a guide wire interspersed in the catheter and the catheter seat.

[0009] As an optional solution described in the utility model, the hemostasis component includes a plurality of barbed hard strips equidistantly adhered to the outer surface of the balloon, one end of each of the barbed hard strips is fixedly connected to a lead wire, a tightening ring is slidably installed between the plurality of lead wires, and the tightening ring is sleeved and installed on the outer wall of the catheter reinforcement.

[0010] As an optional solution described in the utility model, wherein: the barbed hard strip is made of a bioabsorbable material with relatively high hardness, the tightening wire ring is made of a biodegradable material, and the lead wire is made of a biodegradable material.

[0011] As an optional solution described in the utility model, two anchoring members are attached to the outer surface of the balloon, and the middle part of the anchoring members is fixedly connected to the lead wire.

[0012] As an optional solution described in the utility model, wherein: the two anchors have a plurality of barbs on one side away from the balloon, and the adhesion strength between the two anchors and the balloon is relatively low.

[0013] As an optional solution described in the present invention, the anchoring member is made of a bioabsorbable material with relatively high hardness.

[0014] The utility model has the following beneficial effects:

[0015] 1. When in use, the balloon is inserted into the blood vessel, and liquid or gas is injected into the balloon through the balloon inflation and decompression interface to expand the balloon, and the barbed hard strips on its surface are opened like an umbrella. The balloon is pulled to make multiple barbed hard strips penetrate into the inner wall of the blood vessel, and the lead wire is tightened to make multiple barbed hard strips tightly hook the inner wall of the blood vessel without loosening, thereby closing the inner wall of the blood vessel and detaching the barbed hard strips; blood vessel sealing medical glue is injected from the glue injection port of the catheter seat to decompress and shrink the balloon, and the balloon is taken out of the blood vessel, and the lead wire is tightened to close the blood vessel again, and the tightening wire ring is pushed forward to make the tightening wire ring close to the outer wall of the blood vessel and tighten each lead wire, and the excess lead wire is cut off. After the blood vessel closing process is completed, multiple barbed hard strips, blood vessel sealing medical glue, tightening wire ring, and part of the lead wire of the blood vessel occluder remain in the patient's body, and after a period of time, the above components can be decomposed and metabolized by the human body without secondary removal.

[0016] 2. With the cooperation among the catheter seat, balloon inflation and relief interface, glue injection port, guide wire guide port, catheter, catheter reinforcement, glue spray port, wire tightening ring, lead wire, barbed hard strip, anchor, balloon and guide wire, the vascular occluder of the device seals the vascular puncture port through the hemostatic component and the vascular sealing medical glue. The operation is simple and the hemostatic effect is good. The hemostatic component and the vascular sealing medical glue are biodegradable materials and can be decomposed and metabolized by the human body after a period of time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0019] Figure 3 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0020] Figure 4 For the utility model Figure 2 Enlarged structural diagram at B in the middle.

[0021] Figure 5 It is a schematic diagram of the overall structure of the utility model when working.

[0022] Figure 6 It is a schematic diagram of the overall cross-sectional structure of the utility model when working.

[0023] Figure 7 It is a schematic diagram of the enlarged structure of the balloon of the utility model.

[0024] Figure 8 It is a partial structural schematic diagram of the blood vessel puncture port of the utility model.

[0025] Fig. 9 It is a partial side view of the patient's blood vessel puncture port of the utility model.

[0026] Fig.10 This is a schematic diagram of the structure of the portion of the utility model that remains in the puncture hole of the patient's blood vessel.

[0027] Fig.11 It is a side view of the part of the utility model that remains in the puncture hole of the patient's blood vessel.

[0028] In the figure: 1. catheter seat; 11. balloon inflation and decompression interface; 12. glue injection port; 13. guide wire guide port; 2. catheter; 21. catheter reinforcement; 22. glue injection port; 3. hemostasis component; 31. tightening ring; 32. guide wire; 33. barbed hard strip; 34. anchor; 4. balloon; 5. guide wire. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0030] See also Figure 1 - Fig. 9 The vascular occluder comprises a catheter seat 1 and a catheter 2 fixedly mounted at one end of the catheter seat 1, a balloon 4 fixedly mounted at one end of the catheter 2, a guide wire guide port 13 is provided at one end of the catheter seat 1, a balloon inflation and relief interface 11 and a glue injection port 12 are respectively provided on the side wall of the catheter seat 1, a glue injection port 22 is provided on the side wall of one end of the catheter 2, a catheter reinforcement member 21 is sleeved on the outer side of the catheter 2, a hemostasis component 3 is installed on the outer side of the catheter 2, and a guide wire 5 is interspersed in the catheter 2 and the catheter seat 1.

[0031] The medical glue for sealing blood vessels adopts commercially available biodegradable medical glue for sealing blood vessels, for example, a medical glue composed of powder and multiple solutions is adopted, wherein the main components of the powder are modified polyethylene glycol (4-arm-PEG-SG) and brilliant blue pigment, and the solutions include degradable ε-polylysine hydrochloride solution, polyethyleneimine solution, and sterile water for injection. When used, the powder and the solution are mixed, and a nucleophilic substitution reaction occurs when 4-arm-PEG-SG, lysine and polyethyleneimine are mixed to form a cross-linked macromolecule bonded by amide bonds, namely, a hydrogel. The hydrogel has the function of bonding blood vessels, and the force comes from: 1. the force of cross-linking and bonding of the molecules inside the hydrogel by amide bonds; 2. the bonding force of the modified polyethylene glycol and the amino groups of the tissue proteins at the application site undergoing the same nucleophilic substitution reaction.

[0032] When in use, the balloon 4 is inserted into the blood vessel, and liquid or gas is injected into the filling cavity of the balloon 4 through the balloon filling and decompression interface 11 to fill and expand the balloon 4. The balloon 4 expands and opens the barbed hard strips 33 on the surface in an umbrella shape. The balloon 4 is manually pulled to make the multiple barbed hard strips 33 penetrate into the inner wall of the blood vessel. At the same time, the lead wire 32 is tightened to tighten the multiple barbed hard strips 33 so that the multiple barbed hard strips 33 are tightly hooked on the inner wall of the blood vessel without loosening, thereby closing the inner wall of the blood vessel. At this time, since the barbed hard strips 33 penetrate into the blood vessel, The wall of the balloon 4 is closed, and the lead wire 32 is pulled, so that the barbed hard strip 33 is detached from the surface of the balloon 4; the blood vessel sealing medical glue is injected from the glue injection port 12 of the catheter seat 1, and flows from the glue injection port 22 to the patient's blood vessel puncture port through the glue injection cavity; the balloon 4 is depressurized and contracted, and taken out of the blood vessel, and the lead wire 32 is tightened to close the blood vessel again, and the tightening wire ring 31 is manually pushed forward to make the tightening wire ring 31 close to the outer wall of the blood vessel and tighten each lead wire 32, and the excess lead wire 32 is cut off; after the blood vessel sealing medical glue is basically solidified, the blood vessel closing process is completed. Finally, multiple barbed hard strips 33, blood vessel sealing medical glue, tightening wire ring 31, and part of the lead wire 32 remain in the patient's body. After a period of time, the above components can be decomposed and metabolized by the human body without being taken out again. Example 2

[0033] See also Fig.10 - Fig.11 The hemostasis component 3 includes a plurality of barbed hard strips 33 equidistantly pasted on the outer surface of the balloon 4, one end of each of the barbed hard strips 33 is fixedly connected to a lead wire 32, a tightening ring 31 is slidably installed between the plurality of lead wires 32, and the tightening ring 31 is sleeved and installed on the outer wall of the catheter reinforcement 21.

[0034] The barbed hard strip 33 is made of a biodegradable material with relatively high hardness, such as a biodegradable magnesium alloy, or a polymer with relatively high hardness. The tightening wire ring 31 is made of a biodegradable material, such as absorbable iron, stainless steel, magnesium alloy, etc. The lead wire is made of a biodegradable material.

[0035] Two anchors 34 are attached to the outer surface of the balloon 4 , and the middle parts of the anchors 34 are fixedly connected to the lead wire 32 .

[0036] The two anchors 34 have a plurality of barbs on the side away from the balloon 4 , and the adhesion strength between the two anchors 34 and the balloon 4 is relatively low.

[0037] The anchor 34 is made of a bioabsorbable material with relatively high hardness, such as a biodegradable magnesium alloy, or a polymer with relatively high hardness.

[0038] When in use, the balloon 4 is inserted into the blood vessel to inflate and expand the anchor 34 so that it penetrates into the inner wall of the blood vessel. At the same time, the lead wire 32 is tightened to tighten the anchor 34 so that the anchor 34 is tightly hooked on the inner wall of the blood vessel without loosening, thereby anchoring the puncture wound from the inner side of the blood vessel. At this time, since the anchor 34 penetrates into the inner wall of the blood vessel and is subjected to the pulling force of the lead wire 32, the anchor 34 is detached from the surface of the balloon 4; the blood vessel sealing medical glue is injected into the glue injection port 12 of the catheter seat 1, and flows from the glue injection port 22 to the patient's blood vessel puncture port through the glue supply cavity; the balloon 4 is depressurized and contracted, and taken out of the blood vessel, the lead wire 32 is tightened to close the blood vessel again, and the tightening ring 31 is manually advanced so that the tightening ring 31 is close to the outer wall of the blood vessel and each lead wire 32 is tightened, and the excess lead wire 32 is cut off; after the blood vessel sealing medical glue is basically solidified, the blood vessel closing process is completed. Finally, the anchoring part 34, the vascular sealing medical glue, the tightening ring 31, and part of the lead wire 32 remain in the patient's body. After a period of time, the above components can be metabolized by the human body without being removed a second time. The vascular occluder of the device seals the vascular puncture through the hemostatic component 3 and the vascular sealing medical glue. The operation is simple and the hemostatic effect is good. The hemostatic component 3 and the vascular sealing medical glue are biodegradable materials and can be metabolized by the human body after a period of time.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A vascular occluder, comprising a catheter seat (1) and a catheter (2) fixedly mounted on one end of the catheter seat (1), characterized in that: A balloon (4) is fixedly mounted on one end of the catheter (2); a guide wire guide port (13) is provided on one end of the catheter seat (1); a balloon inflation and decompression interface (11) and a glue injection port (12) are respectively provided on the side wall of the catheter seat (1); a glue injection port (22) is provided on the side wall of one end of the catheter (2); a catheter reinforcement member (21) is sleeved on the outside of the catheter (2); a hemostasis component (3) is installed on the outside of the catheter (2); and a guide wire (5) is inserted through both the catheter (2) and the catheter seat (1).

2. The vascular occluder according to claim 1, characterized in that: The hemostasis component (3) comprises a plurality of barbed hard strips (33) equidistantly adhered to the outer surface of the balloon (4), one end of each of the barbed hard strips (33) being fixedly connected to a lead wire (32), a tightening wire ring (31) being slidably mounted between the plurality of lead wires (32), and the tightening wire ring (31) being sleeved and mounted on the outer wall of the catheter reinforcement member (21).

3. The vascular occluder according to claim 2, characterized in that: The barbed hard strip (33) is made of a bio-absorbable material with relatively high hardness, the tightening wire ring (31) is made of a bio-degradable material, and the lead wire (32) is made of a bio-degradable material.

4. The vascular occluder according to claim 3, characterized in that: Two anchoring members (34) are bonded to the outer surface of the balloon (4), and the middle portions of the anchoring members (34) are fixedly connected to the lead wire (32).

5. The vascular occluder according to claim 4, characterized in that: The two anchoring members (34) have a plurality of barbs on a side away from the balloon (4), and the adhesion strength between the two anchoring members (34) and the balloon (4) is relatively low.

6. The vascular occluder according to claim 5, characterized in that: The anchoring element (34) is made of a bioabsorbable material with relatively high hardness.

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