CN111481318B - Convertible inferior vena cava thrombus filter - Google Patents
Convertible inferior vena cava thrombus filter Download PDFInfo
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- CN111481318B CN111481318B CN202010380855.7A CN202010380855A CN111481318B CN 111481318 B CN111481318 B CN 111481318B CN 202010380855 A CN202010380855 A CN 202010380855A CN 111481318 B CN111481318 B CN 111481318B
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- rod
- positioning
- outer part
- movably connected
- fixedly connected
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/01—Filters implantable into blood vessels
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- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
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Abstract
The invention relates to the technical field of medical treatment, and discloses a convertible inferior vena cava thrombus filter, which comprises a supporting rod, wherein a positioning block is movably connected inside the supporting rod, a limiting claw is movably connected outside the positioning block, a limiting spring is fixedly connected outside the limiting claw, a supporting spring is movably connected outside the supporting rod, a fixed block is movably connected outside the supporting spring, a net rod is fixedly connected outside the fixed block, a positioning rod is fixedly connected outside the net rod, the positioning rod is matched with the supporting rod, the fixed block, the positioning rod, a positioning sleeve and a threaded sleeve for use, so that the expanding effect of reinforcing the positioning rod by using the supporting rod is achieved, the stability of the expanding tension of the positioning rod is ensured, and the stability of the device in a venous blood vessel is effectively ensured by a fixed hook claw arranged on the positioning rod, so that the normal use of the, thereby ensuring the filtering effect of thrombus and avoiding the danger of vascular embolism of patients.
Description
Technical Field
The invention relates to the technical field of medical treatment, in particular to a convertible inferior vena cava thrombus filter.
Background
The vena cava filter is a medical filter, pulmonary artery embolism is an emergency with high clinical morbidity and mortality, in the United states, symptomatic pulmonary artery embolism cases occur in the number of 57-63 ten thousand each year, 20 ten thousand of the cases lead to death, 3-20% of the cases still have secondary pulmonary artery embolism although systemic anticoagulation treatment can achieve some curative effects, and the anticoagulation treatment has 26% of complications, wherein 5-12% of the complications are fatal; some patients are unable to receive anticoagulant therapy, such as acute bleeding, peptic ulcers, primary or metastatic tumors, pregnancy, pre-surgical treatment, and the like.
The utility model discloses a filter, including filter, and the filter is used for the blood vessel of current filter injection back, open through its self metal elasticity usually and reach fixed effect, often the fixed effect is unsatisfactory, incline in vascular inside easily to lead to its filtering capability to become invalid, and current filter also takes place easily to open the difficulty injecting into the blood vessel, lead to the unable normal work of filter equipment, current filter equipment only has the one deck filter screen moreover, and the filter effect is poor, leads to the thrombus seepage to advance pulmonary blood vessel easily, thereby causes patient's arterial embolism risk.
In order to solve the above problems, the inventors provide a switchable inferior vena cava thrombus filter.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a convertible inferior vena cava thrombus filter comprises a support rod, a positioning block, a limiting claw, a limiting spring, a support spring, a fixing block, a net rod, a positioning sleeve, a threaded sleeve, a grapple, a pull rod, a gear, a limiting rod, a loop bar, a fixing rod and an object accommodating rod.
The positions and the connection relations of the structures are as follows:
the inner part of the supporting rod is movably connected with a positioning block, the outer part of the positioning block is movably connected with a limiting claw, the outer part of the limiting claw is fixedly connected with a limiting spring, the outer part of the supporting rod is movably connected with a supporting spring, the outer part of the supporting spring is movably connected with a fixing block, the outer part of the fixing block is fixedly connected with a net rod, the outer part of the net rod is fixedly connected with a positioning sleeve, the outer part of the positioning sleeve is movably connected with a threaded sleeve, the outer part of the supporting rod is fixedly connected with a grapple, the outer part of the grapple is movably connected with a grapple sleeve, the outer part of the grapple sleeve is fixedly connected with a pull rod, the outer part of the pull rod is engaged and connected with a gear, the outside of the fixed rod is sleeved with an object accommodating rod;
preferably, at least three positioning blocks are arranged, ratchets are arranged outside the positioning blocks, and the positioning blocks are movably connected with positioning clamping grooves formed in the fixing blocks;
preferably, the limiting pawl and the limiting spring are movably connected inside the supporting rod, the limiting pawl is movably connected with the ratchet arranged on the positioning block, and two ends of the limiting spring are fixedly connected with the limiting pawl and the supporting rod respectively;
preferably, two groups of net rods are arranged, one group of net rods is fixedly connected between the positioning rod and the fixing block, and the other group of net rods is fixedly connected between the positioning rod and the positioning sleeve;
preferably, a tension rod is arranged between the positioning rods, and fixed hooks are arranged outside the positioning rods and provided with two groups of directions;
preferably, the positioning sleeve and the threaded sleeve are sleeved and connected outside the supporting rod, the supporting rod is provided with a threaded rod, and the threaded rod is in threaded connection with the threaded sleeve;
preferably, gear and gag lever post are provided with three groups at least, and three gear all with loop bar swing joint, three gear all meshes the outside of connecting at the pull rod, three gag lever post all with the outside fixed slot swing joint that sets up of bracing piece.
The invention has the beneficial effects that:
1. this convertible inferior vena cava thrombus filter uses through the cooperation of bracing piece, fixed block, locating lever, position sleeve and thread bush to reach the effect of strutting that utilizes the bracing piece to consolidate the locating lever, guarantee that the locating lever struts tensile stability, and the fixed hook that sets up through the locating lever, thereby effectively guarantee the device stability in venous blood vessel, thereby guarantee the normal use of the device, thereby guarantee the filter effect of thrombus, avoid patient to take place vascular embolism danger.
2. This convertible inferior vena cava thrombus filter uses through the cooperation of net pole and locating lever to reach the effect of double-deck filtration thrombus, effectively improve the filterable effect of thrombus, avoid the thrombus to see through filter equipment, thereby effectively guarantee that patient's is healthy, guarantee the filterable curative effect of thrombus.
Drawings
FIG. 1 is a schematic view of the connection of a support rod, a fixed block, a net rod, a positioning rod, a threaded sleeve, a grapple sleeve, a pull rod, a sleeve rod, a fixed rod and an object accommodating rod of the present invention;
FIG. 2 is a schematic view of the connection of the structural support rod, the fixed block, the net rod, the positioning rod, the threaded sleeve and the grapple of the present invention;
FIG. 3 is an enlarged schematic view of the connection of a part A of the support rod, the positioning block, the limiting pawl, the limiting spring, the support spring and the fixing block in FIG. 1;
FIG. 4 is an enlarged view of the connection of a grapple, a grapple sleeve, a pull rod, a gear, a limiting rod, a loop bar and a fixed rod in the section B of the structure of FIG. 1.
In the figure: 1. a support bar; 2. positioning blocks; 3. a limiting claw; 4. a limiting spring; 5. a support spring; 6. a fixed block; 7. a net rod; 8. positioning a rod; 9. a positioning sleeve; 10. a threaded sleeve; 11. a grapple; 12. grabbing a sleeve; 13. a pull rod; 14. a gear; 15. a limiting rod; 16. a loop bar; 17. fixing the rod; 18. and an object accommodating rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, a convertible inferior vena cava thrombus filter includes a support rod 1, a positioning block 2, a limiting claw 3, a limiting spring 4, a support spring 5, a fixing block 6, a net rod 7, a positioning rod 8, a positioning sleeve 9, a threaded sleeve 10, a grapple 11, a grapple 12, a pull rod 13, a gear 14, a limiting rod 15, a loop rod 16, a fixing rod 17, and an object accommodating rod 18.
The positions and the connection relations of the structures are as follows:
the inside of the supporting rod 1 is movably connected with a positioning block 2, the positioning block 2 is at least provided with three, the outside of the positioning block 2 is provided with ratchets, the positioning block 2 is movably connected with a positioning clamping groove arranged inside the fixing block 6, the outside of the positioning block 2 is movably connected with a limiting claw 3, the outside of the limiting claw 3 is fixedly connected with a limiting spring 4, the limiting claw 3 and the limiting spring 4 are both movably connected inside the supporting rod 1, the limiting claw 3 is movably connected with the ratchets arranged on the positioning block 2, two ends of the limiting spring 4 are respectively fixedly connected with the limiting claw 3 and the supporting rod 1, the outside of the supporting rod 1 is movably connected with a supporting spring 5, the outside of the supporting spring 5 is movably connected with a fixing block 6, the outside of the fixing block 6 is fixedly connected with net rods 7, the net rods 7 are provided with two groups, one group of net rods, the outside fixedly connected with locating lever 8 of net pole 7 is provided with the tension pole between the locating lever 8, and the outside of locating lever 8 is provided with fixed hook, and the hook is provided with two sets of orientations, uses through the cooperation of net pole 7 and locating lever 8 to reach the effect of double-deck filtration thrombus, effectively improve the filterable effect of thrombus, avoid the thrombus to see through filter equipment, thereby effectively guarantee that patient's is healthy, guarantee the filterable curative effect of thrombus.
The outside fixedly connected with position sleeve 9 of net pole 7, position sleeve 9 and thread bush 10 all cup joint the outside of connecting at bracing piece 1, and bracing piece 1 is provided with the threaded rod, threaded rod and thread bush 10 threaded connection, the outside swing joint of position sleeve 9 has thread bush 10, through bracing piece 1, fixed block 6, locating lever 8, the cooperation of position sleeve 9 and thread bush 10 is used, thereby reach the effect of strutting that utilizes bracing piece 1 to consolidate locating lever 8, guarantee that locating lever 8 struts tensile stability, and the fixed hook claw that sets up through locating lever 8, thereby effectively guarantee the stability of the device in venous blood vessel, thereby guarantee the normal use of the device, thereby guarantee the filter effect of thrombus, it is dangerous to avoid patient to take place vascular embolism, the outside fixedly connected with grapple 11 of bracing piece 1.
The outside swing joint of grapple 11 has the grab cover 12, the outside fixedly connected with pull rod 13 of grab cover 12, the outside meshing of pull rod 13 is connected with gear 14, the outside fixedly connected with gag lever post 15 of gear 14, gear 14 and gag lever post 15 are provided with three groups at least, and three gear 14 all with loop bar 16 swing joint, the outside at pull rod 13 is connected in the equal meshing of three gear 14, the fixed slot swing joint that three gag lever post 15 all set up with bracing piece 1 outside, the outside swing joint of gear 14 has loop bar 16, the outside of loop bar 16 cup joints and connects dead lever 17, the outside of dead lever 17 cup joints and is connected with and receives thing pole 18.
The working principle and the process of the invention are as follows:
when the device is used, the support rod 1, the net rod 7 and the positioning rod 8 are all positioned in the object accommodating rod 18, the support rod 1, the net rod 7 and the positioning rod 8 are injected into a blood vessel through the object accommodating rod 18, the net rod 7 and the positioning rod 8 are automatically opened, because the support rod 1 is fixedly connected with the grapple 11, the grapple 11 is movably connected with the grapple 12, the grapple 12 is fixedly connected with the pull rod 13, at least three groups of gears 14 and three positioning rods 15 are arranged, the three gears 14 are movably connected with the loop rod 16, the three gears 14 are engaged and connected with the outer part of the pull rod 13, the three positioning rods 15 are movably connected with the fixed groove arranged on the outer part of the support rod 1, the fixed rod 17 is connected with the outer part of the loop rod 16 in a sleeved mode, the pull rod 13 drives the gears 14 to rotate, the gears 14 drive the positioning rods 15 to rotate, the positioning rods 15 are connected with the inner part of the fixed groove of the support, and because the positioning sleeve 9 and the threaded sleeve 10 are both connected outside the supporting rod 1 in a sleeved manner, the supporting rod 1 is provided with a threaded rod, the threaded rod and the threaded sleeve 10 are in threaded connection with the positioning sleeve 9 and are movably connected inside the threaded sleeve 10, and because the net rods 7 are provided with two groups, one group of net rods 7 is fixedly connected between the positioning rod 8 and the fixed block 6, the other group of net rods 7 is fixedly connected between the positioning rod 8 and the positioning sleeve 9, and the fixed block 6 is movably connected with the supporting rod 1, when the sleeve rod 16 and the fixed rod 17 drive the grapple 11 to rotate, the grapple 11 drives the threaded rod part arranged on the supporting rod 1 to rotate, the threaded rod drives the threaded sleeve 10 to move, the threaded sleeve 10 drives the positioning sleeve 9 to move, so that the positioning sleeve 9 and the fixed block 6 move in opposite directions, the net rods 7 and the positioning rod 8 are further propped, and under the, simultaneously, both ends of the positioning rod 8 are fixedly connected with the net rods 7, so that the double-layer filtering effect is achieved.
Because the device is stably and fixedly connected in the blood vessel, the device can be used as a permanent thrombus filtering device, and also can be used as a temporary filtering device because the device is provided with the grapple 11, the device can be taken out after use, when the device needs to be taken out, the grapple 12 is enabled to grasp the grapple 11, the limit rod 15 is enabled to be clamped with the fixing groove of the support rod 1 through the pull rod 13, so that the limit rod 15, the fixed rod 17 and the support rod 1 are movably connected, the threaded rod arranged on the support rod 1 is reversely rotated, the threaded rod reversely drives the threaded sleeve 10, when the tension position of the net rod 7 is reached, the threaded rod arranged on the support rod 1 is continuously rotated, because the inside of the support rod 1 is movably connected with the positioning block 2, the positioning block 2 is at least provided with three positioning blocks 2, the outside of the positioning block 2 is movably connected with the positioning clamping groove arranged in the positioning block 6, and the limiting claw, ratchet swing joint that spacing claw 3 and locating piece 2 set up, the both ends of spacing spring 4 respectively with spacing claw 3, 1 fixed connection of bracing piece, so continue when rotating bracing piece 1, 1 compression supporting spring 5 of bracing piece, bracing piece 1 makes locating piece 2 break away from the inside positioning groove of fixed block 6 simultaneously, and spacing claw 3 and spacing spring 4 guarantee the stability of locating piece 2 position, thereby make fixed block 6 break away from then this moment with bracing piece 1 through drawing through loop bar 16, net pole 7 contracts under the effect of dead lever 17, thereby conveniently receive net pole 7 and locating lever 8 and restraint inside entering and receiving thing pole 18, reach the taking out of the device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A convertible inferior vena cava thrombus filter, comprising a support rod (1), characterized in that: the inner part of the supporting rod (1) is movably connected with a positioning block (2), the outer part of the positioning block (2) is movably connected with a limiting claw (3), the outer part of the limiting claw (3) is fixedly connected with a limiting spring (4), the outer part of the supporting rod (1) is movably connected with a supporting spring (5), the outer part of the supporting spring (5) is movably connected with a fixing block (6), the outer part of the fixing block (6) is fixedly connected with a net rod (7), the outer part of the net rod (7) is fixedly connected with a positioning rod (8), the outer part of the net rod (7) is fixedly connected with a positioning sleeve (9), the outer part of the positioning sleeve (9) is movably connected with a thread sleeve (10), the outer part of the supporting rod (1) is fixedly connected with a grapple hook (11), the outer part of the grapple hook (11) is movably connected with a grapple sleeve (12, a gear (14) is connected to the outer part of the pull rod (13) in a meshed manner, a limiting rod (15) is fixedly connected to the outer part of the gear (14), a loop bar (16) is movably connected to the outer part of the gear (14), a fixed rod (17) is connected to the outer part of the loop bar (16) in a sleeved manner, and an object accommodating rod (18) is connected to the outer part of the fixed rod (17) in a sleeved manner;
at least three positioning blocks (2) are arranged, ratchets are arranged outside the positioning blocks (2), and the positioning blocks (2) are movably connected with positioning clamping grooves arranged inside the fixing blocks (6);
the limiting pawl (3) and the limiting spring (4) are movably connected inside the supporting rod (1), the limiting pawl (3) is movably connected with the ratchet arranged on the positioning block (2), and two ends of the limiting spring (4) are fixedly connected with the limiting pawl (3) and the supporting rod (1) respectively;
two groups of net rods (7) are arranged, one group of net rods (7) is fixedly connected between the positioning rod (8) and the fixing block (6), and the other group of net rods (7) is fixedly connected between the positioning rod (8) and the positioning sleeve (9);
a tension rod is arranged between the positioning rods (8), and fixed hooks are arranged outside the positioning rods (8) and provided with two groups of directions;
the positioning sleeve (9) and the threaded sleeve (10) are connected to the outside of the support rod (1) in a sleeved mode, the support rod (1) is provided with a threaded rod, and the threaded rod is in threaded connection with the threaded sleeve (10);
gear (14) and gag lever post (15) are provided with three groups at least, and three gear (14) all with loop bar (16) swing joint, three gag lever post (15) all with the outside fixed slot swing joint that sets up of bracing piece (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380855.7A CN111481318B (en) | 2020-05-08 | 2020-05-08 | Convertible inferior vena cava thrombus filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380855.7A CN111481318B (en) | 2020-05-08 | 2020-05-08 | Convertible inferior vena cava thrombus filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111481318A CN111481318A (en) | 2020-08-04 |
| CN111481318B true CN111481318B (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010380855.7A Expired - Fee Related CN111481318B (en) | 2020-05-08 | 2020-05-08 | Convertible inferior vena cava thrombus filter |
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| Country | Link |
|---|---|
| CN (1) | CN111481318B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030212432A1 (en) * | 1999-11-08 | 2003-11-13 | Ev3 Sunnyvale, Inc., A California Corporation | Method of removing an implanted device |
| US20040215230A1 (en) * | 2003-04-28 | 2004-10-28 | Frazier Andrew G. C. | Left atrial appendage occlusion device with active expansion |
| US20160128699A1 (en) * | 2014-11-12 | 2016-05-12 | Cook Medical Technologies Llc | Hex capture for self expanding and driven occluder |
| CN209332374U (en) * | 2018-12-08 | 2019-09-03 | 北京市普惠生物医学工程有限公司 | A kind of recyclable device of intravascular filter |
| CN110916848A (en) * | 2019-10-16 | 2020-03-27 | 先健科技(深圳)有限公司 | Filter device |
-
2020
- 2020-05-08 CN CN202010380855.7A patent/CN111481318B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030212432A1 (en) * | 1999-11-08 | 2003-11-13 | Ev3 Sunnyvale, Inc., A California Corporation | Method of removing an implanted device |
| US20040215230A1 (en) * | 2003-04-28 | 2004-10-28 | Frazier Andrew G. C. | Left atrial appendage occlusion device with active expansion |
| US20160128699A1 (en) * | 2014-11-12 | 2016-05-12 | Cook Medical Technologies Llc | Hex capture for self expanding and driven occluder |
| CN209332374U (en) * | 2018-12-08 | 2019-09-03 | 北京市普惠生物医学工程有限公司 | A kind of recyclable device of intravascular filter |
| CN110916848A (en) * | 2019-10-16 | 2020-03-27 | 先健科技(深圳)有限公司 | Filter device |
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| Publication number | Publication date |
|---|---|
| CN111481318A (en) | 2020-08-04 |
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Granted publication date: 20210709 |
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