CN109998635B - Unidirectional thrombus removing device - Google Patents

Unidirectional thrombus removing device Download PDF

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Publication number
CN109998635B
CN109998635B CN201910416027.1A CN201910416027A CN109998635B CN 109998635 B CN109998635 B CN 109998635B CN 201910416027 A CN201910416027 A CN 201910416027A CN 109998635 B CN109998635 B CN 109998635B
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China
Prior art keywords
catheter
thrombus
balloon
guide wire
unidirectional
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CN201910416027.1A
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CN109998635A (en
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田润亭
马敏
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Changzhou City San Run Medical Device Technology Co ltd
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Changzhou City San Run Medical Device Technology Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
    • A61B17/22032—Gripping instruments, e.g. forceps, for removing or smashing calculi having inflatable gripping elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • A61B90/361—Image-producing devices, e.g. surgical cameras
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • A61B90/37—Surgical systems with images on a monitor during operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
    • A61B2017/22034—Gripping instruments, e.g. forceps, for removing or smashing calculi for gripping the obstruction or the tissue part from inside
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
    • A61B2017/22035—Gripping instruments, e.g. forceps, for removing or smashing calculi for retrieving or repositioning foreign objects
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22038—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with a guide wire
    • A61B2017/22047—Means for immobilising the guide wire in the patient
    • A61B2017/22048—Balloons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22051—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
    • A61B2017/22054—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation with two balloons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • A61B90/37—Surgical systems with images on a monitor during operation
    • A61B2090/376—Surgical systems with images on a monitor during operation using X-rays, e.g. fluoroscopy

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Engineering & Computer Science (AREA)
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  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Pathology (AREA)
  • Gynecology & Obstetrics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention relates to a unidirectional thrombus removing device, which belongs to the field of medical appliances, is suitable for removing foreign matters such as thrombus, thrombus fragments, blood clots, blood lipid plaques, atherosclerosis and the like in blood vessels, and is also suitable for removing the thrombus formed on the inner surface of a vascular stent placed in a human blood vessel and causing vascular endothelial hyperplasia. Comprises a puncture head, a guide wire, a catheter, a front saccule catheter, a front supporting sleeve, a collecting basket, a thrombus remover, a rear saccule catheter, a rear supporting sleeve, a sleeve pipe and a negative pressure suction pipe; the catheter is sleeved outside the catheter, the front balloon is arranged in the front balloon mounting groove, the front balloon catheter is connected with the front balloon, and a thrombus cutter is arranged on the catheter at the rear part of the front balloon mounting groove; a collecting basket is arranged on a catheter at the rear part of the thrombectomy device; a rear balloon mounting groove is formed in the catheter at the rear part of the collecting basket, and the rear balloon is mounted in the rear balloon mounting groove; the catheter is internally provided with a negative pressure suction pipe on the rear supporting sleeve.

Description

Unidirectional thrombus removing device
Technical Field
The invention relates to a unidirectional thrombus removing device, which belongs to the field of medical appliances, is suitable for removing foreign matters such as thrombus, thrombus fragments, blood clots, blood lipid plaques, atherosclerosis and the like in blood vessels, and is also suitable for removing the thrombus formed on the inner surface of a vascular stent placed in a human blood vessel and causing vascular endothelial hyperplasia.
Background
Thrombus is a small block of blood flow formed on the surface of the inside surface of a cardiovascular system vessel where it is exfoliated or repaired. In the variable fluid-dependent form, thrombus is composed of insoluble fibrin, deposited platelets, accumulated leukocytes and entrapped erythrocytes, and thrombus formation is a multifactorial process of interaction, by a set of genetic and environmental factors. Clinically common thrombotic patients, the most important features are familial genetics, recurrent attacks, symptom severity, abnormality of thrombotic sites, and time-to-onset rejuvenation, and arterial or venous thrombosis or thromboembolism are suspected to be objectively based. The thrombus generated in the blood vessel is taken out, so that the occluded blood vessel is recanalized, which is the key for recovering the thrombus to block the blood vessel and is a new field of the current international blood vessel research. However, the existing thrombus cleaner has a plurality of defects, for example, the existing thrombus cleaning device can generate up to 30% -50% residues when thrombus cleaning is carried out, and countless fragments can be left in blood vessels when a catheter enters a blood clot, so that the blood flow speed is reduced, and tissue necrosis is caused.
At present, a receiving device of a basket structure is arranged at the distal end of blood flow of a thrombectomy part, thrombus is wound and resected by a resection spring and finally recovered into the basket structure, blood flow in a blood vessel can continue to flow through the basket structure in the process, but when the thrombus is resected by the spring resection device, the phenomenon that tiny thrombus fragments cannot be generated and pass through the basket receiving device along with the blood to enter the blood vessel is avoided, more thrombus can be generated again through long-time accumulation, and harm is caused to a human body.
The intravascular stent is a metallic supporting device placed in a human blood vessel, has the functions of expanding a narrow blood vessel and ensuring the smoothness of local blood flow, and has been widely applied clinically (such as a coronary stent, a carotid stent, an iliac femoral stent, a inferior vena cava stent, a hepatic vein stent, an iliac vein stent and the like). Because the surface of the intravascular stent is not smooth, thrombus is easy to form and vascular endothelial hyperplasia is caused to occur so as to cause restenosis. In general, the treatment of restenosis of intravascular stents is thrombolysis or balloon dilation, and the balloon dilation only has a local squeezing effect but cannot remove thrombus and proliferated tissues, so that the effect is not ideal and difficult to remove.
Disclosure of Invention
The invention aims to provide a unidirectional thrombus removing device aiming at the defects, which thoroughly removes thrombus foreign matters in blood vessels through the unidirectional thrombus removing device, restores vascular smoothness and thoroughly solves complications caused by thrombus.
The unidirectional thrombus removing device is used for solving and removing foreign matters such as intravascular thrombus, thrombus fragments, blood clots, blood lipid plaques, atherosclerosis and the like in large and small blood vessels in clinic, and is also suitable for removing the intravascular thrombus formed on the inner surface of a intravascular stent placed in a human body blood vessel and causing vascular endothelial hyperplasia. The unidirectional thrombus removing device removes foreign matters such as thrombus in blood vessels, the placing of the stent is omitted, the excessive placing of the stent can cause the burst of the blood vessels, and long-term medicine taking is not needed.
The unidirectional thrombus removing device is realized by adopting the following technical scheme:
the unidirectional thrombus removing device comprises a puncture head, a guide wire, a conduit, a front balloon catheter, a front support sleeve, a collecting basket, a thrombus resectoscope, a rear balloon catheter, a rear support sleeve, a sleeve pipe and a negative pressure suction pipe.
The catheter is sleeved outside the catheter, a front balloon mounting groove is formed in the front portion of the catheter, the front balloon is mounted in the front balloon mounting groove, a front balloon catheter is connected with the front balloon, and a front supporting sleeve is mounted in the catheter and used for supporting and positioning the catheter, the front balloon and the front balloon catheter. A thrombectomy device is disposed on the catheter rearward of the anterior balloon mounting groove.
A collecting basket is arranged on the catheter at the rear part of the thrombectomy device and is used for collecting the removed thrombus fragments and foreign matters.
The rear balloon catheter is connected with the rear balloon, and a rear supporting sleeve is arranged in the catheter and used for supporting the catheter to position the rear balloon and the rear balloon catheter. The catheter is internally provided with a back support sleeve which is provided with a negative pressure suction pipe for sucking thrombus fragments and foreign matters removed by the thrombus resectoscope in a negative pressure way and sucking the removed thrombus fragments and foreign matters out of the body in a negative pressure way.
The guide wire sequentially passes through the guide tube, the rear supporting sleeve and the front supporting sleeve, the puncture head is fixedly arranged at the front end part of the guide wire, the puncture head is a conical puncture head, and the front end of the puncture head is provided with a small round angle. The puncture head can be provided with an arc-shaped cutting edge, so that the puncture head can conveniently cut through thrombus hard blocks in a rotating way without puncturing blood vessels.
The thrombus resectoscope is provided with branch-leaf-shaped cutting blades which are distributed on the outer circumferences of the front catheter and the rear catheter in a crossing way, and the cutting blades are in the shape of leaves, long strips, triangles, squares and ovals; when the guide tube moves forwards, the guide sleeve slides backwards for a certain distance, then the cutting blade is sprung out to form a certain angle with the guide tube, the size of the angle is determined by the forward sliding distance of the guide tube, and the blade is made of any material such as nickel-titanium alloy, nylon, PTFE (Teflon elastic plastic wire) and the like. When the cutting blade axially rotates along the guide wire catheter, the cutting blade cuts thrombus, plaque and atherosclerosis on the inner wall of the blood vessel.
The collecting basket is made of nickel-titanium alloy wire mesh-shaped braided fabric.
The front end part of the guide wire is provided with a front positioning block, and the rear guide wire of the rear supporting sleeve is also provided with a rear positioning block. The front end part of the catheter is conical and is provided with a guide wire through hole.
And a guide wire, a liquid guide tube, an optical fiber, a camera signal transmission line and the like are arranged in the guide tube.
The catheter is inserted into a thrombus part of a blood vessel, the guide wire moves forwards, the rear positioning block on the guide wire is matched with the rear supporting sleeve in the catheter to push the catheter to slide forwards, the collecting basket and the thrombus resectoscope are pushed out of the sleeve, the front collecting basket and the thrombus resectoscope are opened, after positioning, the front liquid guiding switch and the rear liquid guiding switch are opened, so that the front balloon and the rear balloon are filled with liquid, the front balloon and the rear balloon are positioned, and foreign matters such as thrombus on the inner wall of the blood vessel can be resected.
After thrombus in the blood vessel is cleared, the pressure liquid in the front balloon and the rear balloon is removed, the front balloon and the rear balloon shrink into the balloon mounting groove, the guide wire moves backwards, and the front positioning block on the guide wire is matched with the front support sleeve in the guide tube to push the guide tube to slide backwards so as to collect the basket and the thrombus remover into the sleeve.
The front catheter front end both sides be provided with miniature camera mounting hole respectively, optic fibre mounting hole installs miniature camera, optic fibre respectively, links to each other with optic fibre video through the signal line, and the signal line links to each other with the video monitor with optic fibre video connector, and the video monitor is equipped with the optic fibre light source, provides the optic fibre light source for optic fibre, can pass through video monitor video monitoring operation during the operation.
The unidirectional thrombus cleaning device is matched with an operation handle part.
The unidirectional thrombus cleaning device is connected with the operation handle part through a catheter.
The operating handle part is provided with a handle, the front end of the handle is movably connected with the rear catheter, the rear catheter is provided with a micro servo motor, the catheter is driven to rotate back and forth by the micro servo motor, the cutting blade on the thrombectomy device is driven to rotate back and forth to cut fragments formed by foreign matters such as thrombus in blood vessels, the rear catheter and the cutting blade on the thrombectomy device can be pulled back and forth to cut fragments formed by foreign matters such as thrombus in blood vessels, the fragments can be sucked out of the body through the negative pressure suction pipe, and the fragments can be collected out of the body through the front collecting basket and the rear collecting basket.
The handle is provided with a guide wire guide wheel, the push rod is operated, the guide wire is wound on the guide wire guide wheel through the guide wheel and positioned through the guide wire positioner, and the guide wire moves back and forth to operate through the gear step of the push rod.
The handle is provided with a power switch, a micro servo motor reversing switch, an optical fiber video connector, a front balloon catheter connector, a rear balloon catheter connector, a negative pressure liquid suction connector and a power plug. The optical fiber video connector is connected with the monitoring video instrument. The front balloon catheter is connected with the front balloon catheter joint, and a front balloon catheter clamp is arranged on the front balloon catheter and used for controlling the opening and closing of the front balloon catheter. The rear balloon catheter is connected with the rear balloon catheter joint, and a rear balloon catheter clamp is arranged on the rear balloon catheter and used for controlling the opening and closing of the rear balloon catheter. The front balloon catheter joint and the rear balloon catheter joint are respectively connected with pressure normal saline or anticoagulation blood pressure liquid. The negative pressure liquid suction connector is connected with a negative pressure source. The power plug is connected with a 3.6V low-voltage power supply.
When the unidirectional thrombus eliminating device is used, the practical thrombus in the blood vessel and the size, shape and position of the thrombus are observed under the X-ray perspective observation by a medical angiography X-ray machine, and the unidirectional thrombus eliminating device is introduced into the position where thrombus tissue exists in the blood vessel.
Working principle:
when the unidirectional thrombus removing device is used, the unidirectional thrombus removing device is matched with an operating handle part,
the thrombus removing device and the catheter are inserted into a blood vessel of a patient needing to remove thrombus through minimally invasive surgery, the optical fiber and the optical fiber video switch are turned on through the operation handle power switch, the optical fiber video connector is connected with the monitoring frequency instrument, the actual thrombus condition in the blood vessel and the size, shape and position of the thrombus can be observed through the optical fiber video through the miniature camera head and the optical fiber arranged at the front end of the front catheter, or the actual thrombus condition in the blood vessel and the size, shape and position of the thrombus are observed through the medical angiography X-ray machine under the X-ray perspective observation, and the thrombus removing device is introduced into the position with thrombus tissue in the blood vessel under the X-ray perspective observation.
1. The handle operating rod is used for pushing the operating rod to drive the guide wire to move forwards, the guide wire is driven to the forefront puncture head of the guide wire port, the puncture head penetrates through a thrombus formation area to be cleared, and the guide wire, the guide pipe, the front balloon catheter, the front support sleeve, the thrombus remover, the collecting basket, the rear balloon catheter, the rear support sleeve and all move forwards under the driving of the puncture head of the guide wire.
2. The one-way thrombus removing device is at the stop position of the rear end of thrombus formation, after the operation handle is operated, the operation rod moves backwards to enable the catheter, the thrombus remover and the collecting basket to be completely exposed, and simultaneously, the front balloon catheter clamp and the rear balloon catheter clamp are opened to fill the front balloon and the rear balloon, and the front balloon and the rear balloon are positioned. Pushing the handle again to enable the guide wire to continue to move forwards, enabling the guide wire positioning block to drive the guide tube, opening the balloon catheter clamp, and enabling the balloon to support the inner wall of the blood vessel to a position with a proper size.
3. Opening the front saccule catheter clamp to form front saccule liquid, and pushing the operation rod to drive the guide wire to move forwards when the front saccule liquid reaches a proper size, so that the collection basket and the thrombectomy device are sufficiently opened.
4. The positions of the front balloon and the rear balloon are fixed, the rear balloon catheter clamp is opened as shown in the figure to fill the rear balloon with liquid, so that the collection basket and the thrombectomy device are sufficiently opened, and at the moment, the thrombectomy device and the collection basket are simultaneously in an opened state.
5. The miniature servo motor reversing switch on the operating handle is pushed, the miniature servo motor starts to run and drives the rear catheter and the cutting blade of the thrombectomy device to rotate back and forth slightly in the clockwise and anticlockwise directions, and the front thrombectomy device and the rear thrombectomy device move back and forth for several times through the front and rear movement of the operating push rod on the operating handle, so that foreign matters such as thrombus on the inner wall of a blood vessel are thoroughly removed.
6. The negative pressure liquid suction connector and the negative pressure source liquid suction switch are started on the operating handle, thrombus fragments and foreign matters in the middle of the front balloon and the rear balloon are extracted through the negative pressure suction pipe, the thrombus fragments and the foreign matters in the blood vessel can be sucked cleanly through the negative pressure suction pipe, and large foreign matters and thrombus are sucked into the collecting basket and the lumen of the guide pipe, so that thrombus and foreign matters in the blood vessel are cleaned cleanly.
7. After thrombus and foreign matter in the blood vessel are removed, the guide wire is recovered through an operation push rod on the operation handle, then the guide wire moves backwards, the guide wire puncture head drives the guide pipe to move backwards, the guide pipe moves backwards to press the collecting basket, the collecting basket is received into the sleeve, then the pressing thrombectomy blade moves backwards, and the thrombectomy blade is retracted into the sleeve.
8. The guide wire is continuously moved, the front balloon liquid and the rear balloon liquid are recovered at the same time, the front balloon liquid and the rear balloon liquid are restored to the original positions, the handle is pushed to enable the sleeve to move forwards to collect the front balloon, then the catheter moves backwards, and the thrombus remover device is extracted. At this time, the thrombectomy effect can be checked by a video of the catheter tip or by a medical angiography X-ray machine under fluoroscopic observation.
Compared with the prior art, the unidirectional thrombus removing device provided by the invention has the advantages of reasonable design, compact structure and convenient use, and the unidirectional thrombus removing device has the advantages that:
1. by arranging the front balloon and the rear balloon which can be in a contracted or released state on the catheter, the blood vessel can be blocked very briefly when the balloon body is in the released state, and blood is prevented from flowing downwards.
2. Because the thrombus resectoscope is arranged as a tree-leaf-shaped thrombus resectoscope, when the cutting blade axially rotates along the guide wire catheter, the cutting blade cuts thrombus, plaque and atherosclerosis on the inner wall of a blood vessel.
3. The puncture head is fixed at the front end of the guide wire, the puncture head is a conical puncture head, the front end of the puncture head is provided with a small round angle, and the puncture head is provided with a cutting edge with an arc shape, so that the puncture head is convenient for rotary cutting to pass through thrombus hard resistance and does not puncture blood vessels.
4. The catheter is provided with a collecting basket for collecting cleaned thrombus fragments and foreign matters, the collecting basket is used for capturing and taking out thrombus, and thrombus fragments generated in the thrombus taking-out process can be taken out completely.
5. The rear part of the catheter can be provided with a micro motor, the catheter is driven to rotate by the micro motor, the blade cutting knife is driven to cut off fragments formed by foreign matters such as thrombus in blood vessels, the fragments can be sucked out of the body through a negative pressure suction pipe, and the fragments can be collected and brought out of the body through a front collecting basket and a rear collecting basket.
6. The two sides of the front end of the catheter are respectively provided with a miniature camera head mounting hole, and the optical fiber mounting holes are respectively provided with a miniature camera head and an optical fiber, and are connected with an optical fiber video connector through a signal wire, the signal wire is connected with an optical fiber video connector and a video monitor, and the operation of video monitoring of the video monitor can be performed during operation.
7. The unidirectional thrombus eliminating device has the characteristics of small wound, simple operation, quick response, accurate curative effect, safety and reliability.
8. The unidirectional thrombus removing device can thoroughly remove the obstruction in the blood vessel.
9. The unidirectional thrombus cleaning device can be used without placing a vascular stent (including nondegradable and degradable).
10. The unidirectional thrombus removing device can remove foreign matters such as thrombus and the like at different parts in a human body.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
fig. 1 is a schematic view showing an opened state structure of a one-way thrombi removing device.
Fig. 2 is a schematic view of a closed state structure of the unidirectional thrombi removing device.
Fig. 3 is a schematic view of the use state of the operation handle part matched with the unidirectional thrombus removing device.
Fig. 4 is a schematic diagram of vascular thrombosis.
Fig. 5 is a schematic view of a one-way thrombi removal device prior to removal of a vascular thrombus.
Fig. 6 is a schematic view of a process of removing vascular thrombus with a one-way thrombus removal device.
FIG. 7 is a schematic representation of the vessel after thrombus removal.
Fig. 8 is a schematic view of the structure of the operating handle part of the unidirectional thrombus cleaning device.
In the figure: 1. 2 parts of a thrombus removing device, an operating handle part, 3 parts of a blood vessel, 4 parts of a thrombus, 1-1 parts of a puncture head, 1-2 parts of a guide wire, 1-3 parts of a catheter, 1-4 parts of a front balloon, 1-5 parts of a front balloon catheter, 1-6 parts of a front support sleeve, 1-7 parts of a collection basket, 1-8 parts of a thrombus resectoscope, 1-9 parts of a rear balloon, 1-10 parts of a rear balloon catheter, 1-11 parts of a rear support sleeve, 1-12 parts of a sleeve, 1-13 parts of a negative pressure suction tube; 1-2-1 parts of positioning blocks, 1-3-1 parts of front balloon mounting grooves, 1-3-2 parts of rear balloon mounting grooves, 1-3-3 parts of miniature cameras, 1-3-4 parts of optical fibers, 1-3-5 parts of signal wires.
Detailed Description
Referring to FIGS. 1-8, a thrombectomy device 1 includes a puncture head 1-1, a guidewire 1-2, a catheter 1-3, a front balloon 1-4, a front balloon catheter 1-5, a front support sleeve 1-6, a collection basket 1-7, a thrombectomy device 1-8, a rear balloon 1-9, a rear balloon catheter 1-10, a rear support sleeve 1-11, a cannula 1-12, and a negative pressure suction tube 1-13.
The sleeve 1-12 is sleeved outside the conduit 1-3, a front balloon mounting groove 1-3-1 is formed in the front portion of the conduit, a front balloon 1-4 is mounted in the front balloon mounting groove 1-3-1, a front balloon catheter 1-5 is connected with the front balloon 1-4, and a front support sleeve 1-6 is mounted in the conduit 1-3 and used for supporting and positioning the conduit 1-3, the front balloon 1-4 and the front balloon catheter 1-5. A thrombectomy device 1-8 is provided on the catheter 1-3 at the rear of the front balloon mounting groove 1-3-1.
A collection basket 1-7 for collecting the removed thrombus fragments and foreign matters is installed on the rear catheter 1-3 of the thrombectomy device 1-8.
The rear catheter 1-3 of the collecting basket 1-7 is provided with a rear balloon mounting groove 1-3-2, a rear balloon 1-9 is mounted in the rear balloon mounting groove 1-3-2, a rear balloon catheter 1-10 is connected with the rear balloon 1-9, and a rear supporting sleeve 1-11 is mounted in the catheter 1-3 and used for supporting the catheter to position the rear balloon and the rear balloon catheter. The catheter 1-3 is internally provided with a rear supporting sleeve 1-11 which is provided with a negative pressure suction pipe 1-13 for sucking thrombus fragments and foreign matters removed by the thrombus resectoscope in a negative pressure way and sucking the removed thrombus fragments and foreign matters out of the body in a negative pressure way.
The guide wire 1-2 sequentially passes through the guide tube 1-3, the rear supporting sleeve 1-11 and the front supporting sleeve 1-6, the puncture head 1-1 is fixedly arranged at the front end part of the guide wire 1-2, the puncture head 1-1 is a conical puncture head, and the front end of the puncture head is provided with a small round angle. The puncture head 1-1 can be provided with an arc-shaped cutting edge, which is convenient for rotary cutting through thrombus hard blocks without puncturing blood vessels.
The thrombectomy devices 1-8 are provided with branch-leaf-shaped thrombectomy devices, branch-leaf-shaped cutting blades are distributed on the outer circumferences of the front catheter and the rear catheter in a crossed mode, and the cutting blades are in the shape of leaves, long strips, triangles, squares and ovals. When the guide tube moves, the guide sleeve 1-3 slides backwards for a certain distance, then the cutting blade is sprung out to form a certain angle with the guide tube, the size of the angle is determined by the forward sliding distance of the guide tube, and the blade is made of nickel-titanium alloy, nylon, PTFE (Teflon elastic plastic wire) and other materials. When the cutting blade rotates slightly back and forth along the axial direction of the guide wire 1-2 and the guide tube 1-3, the cutting blade cuts thrombus, plaque and atherosclerosis on the inner wall of the blood vessel.
The collecting basket 1-7 is made of nickel-titanium alloy wire mesh-shaped braided fabric.
The front end part of the guide wire 1-2 is provided with a positioning block 1-2-1. The front end part of the catheter is conical and is provided with a guide wire through hole.
The catheter 1-3 is internally provided with a guide wire 1-2, a front balloon catheter, a rear balloon catheter, a negative pressure suction tube 1-13, an optical fiber, an image pickup signal transmission line and the like.
The catheter 1-3 is inserted into a thrombus part of a blood vessel, the guide wire 1-2 moves forwards, the positioning block on the guide wire 1-2 pushes the catheter to slide forwards through the front end of the catheter, the collection basket 1-7 and the thrombus resectoscope 1-8 are pushed out of the sleeve 1-12, the front collection basket 1-7 and the thrombus resectoscope 1-8 are opened, after positioning, the front balloon catheter clamp and the rear balloon catheter clamp are opened, so that the front balloon and the rear balloon are filled with liquid, the front balloon and the rear balloon are positioned, and foreign matters such as thrombus on the inner wall of the blood vessel can be resected.
After thrombus in the blood vessel is cleared, the pressure liquid in the front balloon and the rear balloon is removed, the front balloon and the rear balloon shrink into the balloon mounting groove, the guide wire moves backwards, and the front positioning block on the guide wire is matched with the front support sleeve in the guide tube to push the guide tube to slide backwards so as to collect the basket and the thrombus remover into the sleeve.
The two sides of the front end of the catheter 1-3 are respectively provided with a miniature camera head mounting hole, an optical fiber mounting hole is respectively provided with a miniature camera head 1-3-3 and an optical fiber 1-3-4, the miniature camera head and the optical fiber 1-3-4 are connected with an optical fiber video connector through a signal wire 1-3-5, the signal wire 1-3-5 is connected with an optical fiber video connector and a video monitor, the video monitor is provided with an optical fiber light source, the optical fiber is provided with the optical fiber light source, and the operation can be monitored through the video monitor video during operation.
The unidirectional thrombi removing device 1 is provided with an operation handle part 2.
The thrombi removing device 1 is connected with the operation handle portion 2 through a catheter 1-3.
The operating handle part 2 is provided with a handle 2-1, the front end of the handle 2-1 is movably connected with the catheter 1-3, the rear part of the catheter 1-3 can be provided with a micro servo motor 2-2, the micro servo motor 2-2 drives the catheter 1-3 to rotate back and forth to drive a cutting blade on the thrombectomy device 1-8 to rotate back and forth to cut fragments formed by foreign matters such as thrombus 4 in the blood vessel 3, the rear catheter and the cutting blade on the thrombectomy device 1-8 can be pulled back and forth to cut fragments formed by foreign matters such as thrombus 4 in the blood vessel 3, the fragments can be sucked out of the body through a negative pressure suction tube 1-13, and the fragments can be collected out of the body through a front collecting basket and a rear collecting basket.
The handle 2-1 is provided with a guide wire guide wheel 2-4, the push rod 2-5 is operated, the guide wire 1-2 is wound on the guide wire guide wheel 2-4 through the guide wheel 2-12 and positioned through the guide wire positioner 2-11, and the guide wire moves back and forth to operate through the gear step of the operation push rod.
The handle 2-1 is provided with a power switch 2-3, a micro servo motor reversing switch 2-13, an optical fiber video connector 2-6, a front balloon catheter connector 2-7, a rear balloon catheter connector 2-9, a negative pressure liquid suction connector 2-8 and a power plug 2-10. The optical fiber video connector 2-6 is connected with a monitoring video instrument. The front balloon catheter 1-5 is connected with the front balloon catheter joint 2-7, and the front balloon catheter is provided with a front balloon catheter clamp 2-14 for controlling the opening and closing of the front balloon catheter. The rear balloon catheter 1-10 is connected with the rear balloon catheter joint 2-9, and the rear balloon catheter 1-10 is provided with a rear balloon catheter clamp 2-15 for controlling the opening and closing of the rear balloon catheter. The front balloon catheter connection 2-7 and the rear balloon catheter connection 2-9 are respectively connected with pressure physiological saline or anticoagulation blood pressure liquid. The negative pressure liquid suction connector 2-8 is connected with a negative pressure source. The power plug 2-10 is connected with a 3.6V low-voltage power supply.
When the thrombus eliminating device is used, the practical thrombus in blood vessel, the size, shape and position of thrombus are observed through the medical angiography X-ray machine under the X-ray perspective observation, and the thrombus eliminating device is introduced into the position with thrombus tissue in blood vessel.
Working principle:
when the unidirectional thrombus removing device is used, the unidirectional thrombus removing device is matched with an operating handle part,
the thrombus removing device and the catheter are inserted into a blood vessel of a patient needing to remove thrombus through minimally invasive surgery, the optical fiber and the optical fiber video switch are turned on through the operation handle power switch, the optical fiber video connector is connected with the monitoring frequency instrument, the actual thrombus condition in the blood vessel and the size, shape and position of the thrombus can be observed through the optical fiber video through the miniature camera head and the optical fiber arranged at the front end of the front catheter, or the actual thrombus condition in the blood vessel and the size, shape and position of the thrombus are observed through the medical angiography X-ray machine under the X-ray perspective observation, and the thrombus removing device is introduced into the position with thrombus tissue in the blood vessel under the X-ray perspective observation.
1. The handle operating rod is used for pushing the operating rod to drive the guide wire to move forwards, the guide wire is driven to the forefront puncture head of the guide wire port, the puncture head penetrates through a thrombus formation area to be cleared, and the guide wire, the guide pipe, the front balloon catheter, the front support sleeve, the thrombus remover, the collecting basket, the rear balloon catheter, the rear support sleeve and all move forwards under the driving of the puncture head of the guide wire.
2. The thrombus removing device is at the stop position of the rear end of thrombus formation, after the operation handle is operated, the operation rod moves backwards to enable the catheter, the thrombus remover and the collecting basket to be completely exposed, meanwhile, the front balloon catheter clamp and the rear balloon catheter clamp are opened to fill the front balloon and the rear balloon, and the front balloon and the rear balloon are positioned. Pushing the handle again to enable the guide wire to continue to move forwards, enabling the guide wire positioning block to drive the guide tube, opening the balloon catheter clamp, and enabling the balloon to support the inner wall of the blood vessel to a position with a proper size.
3. The front saccule catheter clamp 2-14 is opened to be front saccule liquid filling, and the front saccule 1-4 liquid filling reaches a proper size, and the operating rod is pushed again to drive the guide wire 1-2 to move forwards, so that the collection basket 1-7 and the thrombus resectoscope 1-8 are sufficiently opened.
4. The positions of the front balloon and the rear balloon are set, the rear balloon catheter clamp 2-15 is opened as shown in the figure to fill the rear balloon 1-9 with liquid, so that the collection basket 1-7 and the thrombectomy device 1-8 are sufficiently opened, and at the moment, the thrombectomy device 1-8 and the collection basket 1-7 are simultaneously in an opened state.
5. The reversing switch 2-13 of the miniature servo motor on the operating handle is pushed, the miniature servo motor starts to run and drives the rear catheter 1-3 and the cutting blade of the thrombectomy device 1-8 to rotate back and forth slightly in the clockwise and anticlockwise directions, and the front thrombectomy device and the rear thrombectomy device move back and forth and back for several times through the front and rear movement of the operating push rod 2-5 on the operating handle, so that foreign matters such as thrombus 4 on the inner wall of the blood vessel 3 are thoroughly removed.
6. The negative pressure liquid suction connector 2-8 and the negative pressure source liquid suction switch are started on the operating handle, thrombus fragments and foreign matters in the middle of the front balloon and the rear balloon are extracted through the negative pressure suction pipe 1-13, the thrombus fragments and the foreign matters in the blood vessel can be sucked cleanly through the negative pressure suction of the negative pressure suction pipe 1-13, and large foreign matters and thrombus are sucked into the collecting basket and the lumen of the catheter, so that the thrombus and the foreign matters in the blood vessel are cleaned cleanly.
7. After thrombus and foreign matter in the blood vessel are removed, the guide wire is recovered through an operation push rod 2-5 on the operation handle, the guide wire 1-2 moves backwards, the guide wire puncture head drives the guide pipe to move backwards, the guide pipe 1-3 moves backwards to press the collecting basket 1-7, the collecting basket is received into the sleeve pipe 1-12, then the pressing thrombectomy blade moves backwards, and the thrombectomy blade is retracted into the sleeve 1-12.
8. The guide wire 1-2 is continuously moved, the front balloon liquid and the rear balloon liquid are recovered at the same time, the front balloon liquid and the rear balloon liquid are restored to the original positions, the handle is pushed to enable the sleeve 1-12 to move forwards to collect the front balloon, then the catheter 1-3 moves backwards, and the thrombus remover device is extracted. At this time, the thrombectomy effect can be checked by a video of the catheter tip or by a medical angiography X-ray machine under fluoroscopic observation.
The thrombectomy effect can be checked by a video of the catheter front end during the operation or by a medical angiography X-ray machine under X-ray fluoroscopy.

Claims (10)

1. The unidirectional thrombus removing device is characterized by comprising a puncture head, a guide wire, a catheter, a front balloon catheter, a front supporting sleeve, a collecting basket, a thrombus remover, a rear balloon catheter, a rear supporting sleeve, a sleeve pipe and a negative pressure suction pipe;
the catheter is sleeved outside the catheter, a front balloon mounting groove is formed in the front part of the catheter, the front balloon is mounted in the front balloon mounting groove, a front balloon catheter is connected with the front balloon, a front supporting sleeve is mounted in the catheter and used for supporting and positioning the catheter, the front balloon and the front balloon catheter, and a thrombus cutter is arranged on the catheter at the rear part of the front balloon mounting groove;
a collecting basket is arranged on the catheter at the rear part of the thrombectomy device and is used for collecting the removed thrombectomy fragments and foreign matters;
a rear balloon mounting groove is formed in the rear catheter of the collecting basket, the rear balloon is mounted in the rear balloon mounting groove, a rear balloon catheter is connected with the rear balloon, and a rear supporting sleeve is mounted in the catheter and used for supporting the catheter to position the rear balloon and the rear balloon catheter; the catheter is internally provided with a rear supporting sleeve which is provided with a negative pressure suction pipe for sucking the thrombus and removing the thrombus fragments and foreign matters.
2. A unidirectional thrombus removal device as in claim 1 wherein the guide wire passes through the catheter, the rear support sleeve and the front support sleeve in sequence, and the front end of the guide wire is fixedly provided with a puncture head.
3. A unidirectional thrombus removal device as in claim 1 wherein the puncture head is a conical puncture head with a small rounded nose at the front end, the puncture head being provided with an arcuate cutting edge for facilitating the rotational cutting through the thrombus mass without puncturing the vessel.
4. The unidirectional thrombi elimination device according to claim 1, wherein said thrombi remover is provided with cutting blades, the cutting blades are distributed on the outer circumference of the front and rear catheters in a crossing manner, and the shape of the cutting blades is leaf-shaped, strip-shaped, triangular, square or oval; when the guide tube moves forwards, the guide sleeve slides backwards for a certain distance, then the cutting blade is sprung out to form a certain angle with the guide tube, and the cutting blade is made of nickel-titanium alloy, nylon or PTFE Teflon elastic plastic wire materials.
5. A unidirectional thrombus removal device as in claim 1 wherein said collection basket is formed from a nickel titanium alloy wire mesh braid.
6. The unidirectional thrombus removal device of claim 1 wherein the front end of the guide wire is provided with a front positioning block, the rear guide wire of the rear support sleeve is provided with a rear positioning block, and the front end of the guide tube is conical and is provided with a guide wire through hole.
7. A unidirectional thrombi elimination device according to claim 1, wherein,
the two sides of the front end of the catheter are respectively provided with a miniature camera head mounting hole, an optical fiber mounting hole is respectively provided with a miniature camera head and an optical fiber, the miniature camera head and the optical fiber are connected with an optical fiber video connector through a signal wire, the signal wire is connected with an optical fiber video connector and a video monitor, the video monitor is provided with an optical fiber light source, the optical fiber is provided with the optical fiber light source, and the operation of video monitoring of the video monitor can be performed during operation.
8. A unidirectional thrombi elimination device according to claim 1 and wherein said unidirectional thrombi elimination device is provided with an operation handle portion, said thrombi elimination device being connected to said operation handle portion by a catheter;
the operating handle part is provided with a handle, the front end of the handle is movably connected with the rear catheter, the rear part of the rear catheter is provided with a miniature servo motor, the catheter is driven to rotate back and forth in a micro-rotation mode through the miniature servo motor, and the cutting blade on the thrombectomy device is driven to rotate back and forth in a micro-rotation mode to remove fragments formed by thrombus and foreign matters in a blood vessel.
9. A unidirectional thrombus removal device as in claim 8 wherein the handle is provided with a guide wire guide wheel on which the guide wire is wound by a guide wheel, and wherein the guide wire is positioned by a guide wire positioner, the guide wire being moved back and forth through a gear step operation of the operating push rod.
10. The unidirectional thrombus removal device of claim 8, wherein the handle is equipped with a power switch, a micro-servo motor reversing switch, an optical fiber video connector, a front balloon catheter connector, a rear balloon catheter connector, a negative pressure suction connector, a power plug; the optical fiber video connector is connected with the monitoring video instrument; the front balloon catheter is connected with a front balloon catheter joint, and a front balloon catheter clamp is arranged on the front balloon catheter and used for controlling the front balloon catheter to be opened and closed; the rear balloon catheter is connected with a rear balloon catheter joint, and a rear balloon catheter clamp is arranged on the rear balloon catheter and used for controlling the opening and closing of the rear balloon catheter; the front balloon catheter joint and the rear balloon catheter joint are respectively connected with pressure normal saline or anticoagulation blood pressure liquid; the negative pressure liquid suction connector is connected with a negative pressure source; the power plug is connected with the low-voltage power supply.
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