CN114403981A - Catheter device for mechanical thrombus removal of blood vessel - Google Patents

Catheter device for mechanical thrombus removal of blood vessel Download PDF

Info

Publication number
CN114403981A
CN114403981A CN202111566006.1A CN202111566006A CN114403981A CN 114403981 A CN114403981 A CN 114403981A CN 202111566006 A CN202111566006 A CN 202111566006A CN 114403981 A CN114403981 A CN 114403981A
Authority
CN
China
Prior art keywords
balloon
catheter
wall
main body
blood
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202111566006.1A
Other languages
Chinese (zh)
Other versions
CN114403981B (en
Inventor
施磊
陈云周
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Xinchuang Medical Equipment Co.,Ltd.
Original Assignee
Chengdu Bairuihengtong Medical Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Bairuihengtong Medical Technology Co ltd filed Critical Chengdu Bairuihengtong Medical Technology Co ltd
Priority to CN202111566006.1A priority Critical patent/CN114403981B/en
Publication of CN114403981A publication Critical patent/CN114403981A/en
Application granted granted Critical
Publication of CN114403981B publication Critical patent/CN114403981B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/12—Devices for heating or cooling internal body cavities
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1011—Multiple balloon catheters
    • 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
    • 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
    • A61B2017/22065—Functions of balloons
    • A61B2017/22067—Blocking; Occlusion
    • 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
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/12—Devices for heating or cooling internal body cavities
    • A61F2007/126—Devices for heating or cooling internal body cavities for invasive application, e.g. for introducing into blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1075—Balloon catheters with special features or adapted for special applications having a balloon composed of several layers, e.g. by coating or embedding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1079—Balloon catheters with special features or adapted for special applications having radio-opaque markers in the region of the balloon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/32—General characteristics of the apparatus with radio-opaque indicia

Abstract

The invention provides a catheter device for mechanical thrombus removal of a blood vessel, which comprises a catheter main body, wherein a first balloon is arranged on the outer wall of the far end of the catheter main body; a channel communicated with the first balloon is arranged in the tube wall of the catheter main body and is communicated with external liquid filling equipment; the catheter device has the functions of plugging blood vessels and cooling blood in the blood vessels, and the plugging of the blood vessels can prevent thrombus from escaping with the blood and flowing into the far ends of the blood vessels to cause complications; the blood cooling can protect and slow down the blood flow, thereby achieving the purposes of improving the success probability of the operation and reducing the operation risk; meanwhile, the plugging and the blood flow temperature reduction are integrated on the catheter device, so that the condition that an operator replaces the catheter according to different requirements in the operation process is avoided, the operation time is saved, and the condition that the optimal treatment time window is missed is avoided.

Description

Catheter device for mechanical thrombus removal of blood vessel
Technical Field
The invention relates to the technical field of medical equipment, in particular to a catheter device for mechanical thrombus removal of blood vessels.
Background
Acute Ischemic Stroke (AIS) accounts for about 85% of all cerebral strokes, has high morbidity, high disability rate, high mortality and high recurrence rate, and only reaches 150 thousands of deaths per year in China. For the treatment of patients with acute ischemic occlusion, the recanalization rate of stenotic and occluded blood vessels is remarkably improved from arterial thrombolysis, arteriovenous bridging thrombolysis, intravascular angioplasty, mechanical thrombus breaking. With the development of materials science and the improvement of the operation level in blood vessels, mechanical embolectomy is a direct means for recovering a diseased blood vessel, and gradually becomes a new technology of AIS treatment, and the mechanical embolectomy is gradually a more common technology in a plurality of treatment methods at present.
The mechanical embolectomy method has two modes: one is a stent removal method, and the other is an aspiration catheter aspiration method. In the two modes, a small amount of thrombus emboli can escape to the far end of a blood vessel along with the flushing of arterial blood flow in the operation process due to the thrombus taking out process, so that operation complications are caused, and in addition, the reperfusion after the blood flow is re-communicated after mechanical thrombus taking out in the operation process is also troubled as the operation complications. These complications have potential problems that limit the benefits of mechanical embolectomy.
Therefore, how to develop a catheter device which can reduce reperfusion injury and block blood flow for a short time simultaneously in the whole operation process and cooperate with mechanical embolectomy is a problem to be solved by the technical personnel in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a catheter device for mechanical thrombus removal of a blood vessel, which solves the problems that a small amount of thrombus escapes to the far end of the blood vessel due to mechanical thrombus removal operation, and blood flow reperfusion after thrombus removal causes damage to the blood vessel of a patient, so that complications occur after operation of the patient.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the catheter device for mechanical thrombus removal of the blood vessel comprises a catheter main body, wherein a first balloon for sealing the blood vessel when being filled is arranged on the outer wall of the far end of the catheter main body;
a plurality of second saccules which are communicated with each other are arranged between the far end and the near end of the catheter main body at intervals, and the second saccules are used for being communicated with external cooling equipment to cool blood in a blood vessel.
The basic principle of the catheter device of the scheme is as follows: firstly, the whole catheter main body is placed in a blood vessel of a patient, after the catheter main body is placed in place, external liquid filling equipment fills liquid into the first balloon through the channel, the diameter of the first balloon is increased along with the increase of filling pressure, so that the blood flow in the blood vessel is blocked, the thrombus flowing along with the blood is blocked, a small amount of thrombus is prevented from escaping to the far end of the blood vessel in the thrombus taking process, the hidden danger of complication of the patient caused by the escape of the thrombus is reduced, and the treatment effect of mechanical thrombus taking is improved; the back is taken out the thrombus from the blood vessel again, the shutoff to the blood vessel is removed in the first sacculus retraction, make blood normally circulate (reperfusion), but the blood vessel is in the region of thrombus jam this moment, because of long-term shutoff leads to unable blood pressure and the velocity of flow that adapts to normal blood circulation in time, so fill the coolant liquid to a plurality of second sacculus through external cooling equipment, the coolant liquid is at a plurality of second sacculus internal circulation cooling, and then reach the purpose of cooling blood and reducing the blood velocity of flow, reduce the pressure that blood circulation caused the blood vessel, and then reach the effect that reduces the reperfusion injury, reduce the operation risk that the machinery got the thrombus.
Further, as a specific implementation mode of cooling liquid in the plurality of second balloons, a liquid inlet channel and a liquid outlet channel are arranged in the tube wall of the catheter main body along the length direction of the tube wall; a liquid inlet and a liquid outlet which are respectively communicated with the liquid inlet channel and the liquid outlet channel are formed in the outer wall of the catheter main body in each second balloon; the liquid inlet channel and the liquid outlet channel are respectively communicated with a liquid inlet port and a liquid outlet port of external cooling equipment.
Further, as a specific implementation mode of filling the developing solution into the first balloon, a channel used for being communicated with the first balloon is arranged in the tube wall of the catheter main body, and the channel is used for being communicated with an external liquid filling device. When a blood vessel needs to be blocked, developing solution can be filled into the channel through the external liquid filling equipment to enable the first balloon to expand so as to achieve the purpose of blocking the blood vessel to block blood circulation, meanwhile, the developing solution can be displayed on the X-ray equipment, the size of the expansion of the first balloon can be judged according to a display image, and then a doctor can conveniently judge whether the blood vessel is completely blocked or not.
Furthermore, the first balloon is a compliant balloon, the diameter of the expanded first balloon is 1-6 times of the diameter of the expanded first balloon, and the first balloon has the function of blocking a blood vessel, so that the self-expansibility of the first balloon must be good, the inner wall of the blood vessel is prevented from being damaged, and the first balloon can be made of soft materials such as pu and silica gel and is more attached to the blood vessel; and the expansion degree of the first balloon can be observed in real time through the developing solution, so that the internal pressure of the first balloon does not need to be large, and the first balloon can be fixedly connected with the outer wall of the catheter main body in a bonding mode.
Furthermore, each second balloon is a semi-compliant balloon or a non-compliant balloon, and the diameter of the second balloon which is expanded after liquid filling is 1.05-1.3 times of the diameter of the second balloon; the second balloon is arranged for circulating cooling liquid inside to further achieve the purpose of cooling blood and reducing the speed, the expansion degree of the second balloon can be set to be small, meanwhile, the second balloon does not need to observe the size of the second balloon after expansion in real time, and only needs normal circulation of the cooling liquid, so that in the actual embolectomy operation process, the pressure inside the second balloon is large, the second balloon is prevented from being damaged due to large pressure, the second balloon can be made of materials such as nylon and pebax, the materials are relatively hard, and the structural strength of the second balloon is guaranteed; meanwhile, the second balloon can be fixedly connected with the outer wall of the catheter main body in a connecting mode such as heat sealing, laser welding and ultrasonic welding, and the expanded second balloon can further ensure that the supporting performance and the pushing performance of the catheter main body are not affected.
Further, in order to find the positions of the first balloon and the second balloon through X-ray irradiation visualization during an operation, the operator can conveniently adjust the position of the catheter main body in a blood vessel, the first balloon or each of the tube sections corresponding to the second balloon is provided with a developing mark ring, and particularly, the developing mark ring can be formed by coating a developing material on the tube section or can be installed on the corresponding tube section by adopting the existing developing ring.
Furthermore, the outer walls of the first sacculus, the catheter main body and the plurality of second sacculus are respectively provided with a hydrophilic coating or an anticoagulant coating, so that the friction force between the first sacculus, the second sacculus, the catheter main body and the blood vessel wall can be reduced, the position of the catheter main body in the blood vessel can be conveniently adjusted, and the abrasion of the blood vessel wall can be reduced.
Furthermore, after the first balloon blocks blood, thrombus needs to be taken out, a thrombus taking device is arranged in the catheter main body and comprises a puncture needle arranged in the catheter main body, the puncture needle is of a hollow structure, a plurality of contraction arms with uniform intervals are annularly arranged on the circumferential outer wall of the puncture needle close to the tip, and one end of each contraction arm is hinged with the circumferential outer wall;
a main cable line is arranged in the puncture needle, a plurality of branch cable lines are arranged at the head end of the main cable line, and the tail end of the main cable line penetrates through the catheter main body and is positioned outside the blood vessel;
each cable branch line all matches a shrink arm, and the pin joint of shrink arm is walked around to the one end of cable branch line and passes the pipe wall of pipe main part and shrink arm's lateral wall fixed connection.
The use method of the thrombus removal device comprises the following steps: after the position of thrombus in a blood vessel is determined, a catheter main body is penetrated into the blood vessel, then the blood circulation is blocked by filling a developing solution into a first balloon, then a puncture needle is penetrated into the catheter main body, at the moment, a plurality of contraction arms are in a contraction state, each contraction arm is tightly attached to the circumferential outer wall of the catheter main body, after the puncture needle encounters the thrombus, the puncture needle continues to penetrate until the plurality of contraction arms on the outer wall of the puncture needle completely penetrate through the whole thrombus, then a cable main line is pulled backwards, the cable main line simultaneously drives a plurality of cable branch lines to move backwards, the plurality of contraction arms rotate around a hinge point, the plurality of contraction arms are in an opening state, the whole puncture needle is moved backwards, the plurality of contraction arms in the opening state wrap the thrombus, and finally, after the blood is cooled by a second balloon, the whole catheter main body and a thrombus taking device are pulled out from the blood vessel backwards, the thrombus can be taken out.
Furthermore, as a specific mode that a plurality of contraction arms are arranged on the outer wall of the circumference of the catheter main body, an annular groove is formed in the outer wall of the circumference of the catheter main body, the plurality of contraction arms are all arranged in the annular groove, the cross section of each contraction arm is of an arc structure, one end of each contraction arm is hinged with one side wall of the annular groove through a hinge, and the other end of each contraction arm is provided with an elastic contact for contacting with the other side wall of the annular groove; when the contraction arm retracts into the annular groove, the outer wall of the contraction arm is flush with the outer wall of the circumference of the catheter main body, and the elastic contact is in extrusion contact with the side wall of the annular groove. Run through the thrombus in-process at the pjncture needle, many accomodate the arm and accomodate in the annular groove, and the outer wall and the pipe main part circumference outer wall parallel and level of contracting the arm can realize reducing the puncture to the destruction of thrombus, reduce the damaged degree of thrombus, can reduce and destroy the thrombus that causes the destruction because of destroying to the thrombus at the thrombectomy in-process and along with the risk that blood escaped, improve the treatment and the appearance that reduces the complication of thrombectomy.
The invention has the beneficial effects that: the catheter device in the scheme has the functions of blocking the blood vessel and cooling blood in the blood vessel, and the blockage of the blood vessel can prevent thrombus from flowing into the far end of the blood vessel along with the blood to cause complications; the brain tissue can be protected by blood cooling, so that the purposes of improving the success probability of the operation and reducing the operation risk are achieved; meanwhile, the plugging and the blood flow temperature reduction are integrated on the catheter main body, so that the condition that an operator replaces the catheter according to different requirements in the operation process is avoided, the operation time is saved, and the condition that the optimal treatment time window is missed is avoided.
Drawings
Fig. 1 is a structural schematic diagram of a catheter device for mechanical thrombus removal from blood vessels.
Figure 2 is a cross-sectional structural schematic view of a catheter body with a channel.
Fig. 3 is a schematic view of a second balloon disposed on the distal end of the catheter body.
Fig. 4 is an enlarged structural schematic view of the thrombus removal device in the catheter body.
FIG. 5 is a schematic cross-sectional view of an embolectomy device disposed within a catheter body.
Wherein, 1, the catheter main body; 2. a channel; 3. a second balloon; 4. a liquid inlet channel; 5. a liquid outlet channel; 6. a liquid inlet; 7. a liquid outlet; 8. developing the marking ring; 9. a first balloon; 10. a thrombus taking device; 11. puncturing needle; 12. a retracting arm; 13. a cable main line; 14. a cable branch line; 15. an annular groove; 16. and an elastic contact.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1-5, the invention provides a catheter device for mechanical thrombus removal of a blood vessel, which comprises a catheter main body 1, wherein a first balloon 9 for sealing the blood vessel when being inflated is arranged on the outer wall of the distal end of the catheter main body 1;
a plurality of second balloons 3 which are communicated with each other are arranged between the far end and the near end of the catheter main body 1 at intervals, and the second balloons 3 are communicated with external cooling equipment to cool blood in a blood vessel.
The first balloon 9 is a compliant balloon, the diameter of the expanded first balloon 9 is 1-6 times of the diameter of the expanded first balloon, and the first balloon 9 has a function of blocking a blood vessel, so that the self-expansibility of the first balloon 9 must be good, and meanwhile, the inner wall of the blood vessel is prevented from being damaged, and the first balloon 9 can be made of soft materials such as pu and silica gel and can be more attached to the blood vessel; when the first balloon 9 is inflated by the introduced developing solution, the inflation degree can be observed in real time through X-ray irradiation, so that the internal pressure of the first balloon 9 does not need to be large, and the first balloon 9 can be fixedly connected with the outer wall of the catheter main body 1 in an adhesion mode.
Each second balloon 3 is a semi-compliant balloon or a non-compliant balloon, and the diameter of the second balloon 3 which is expanded after liquid filling is 1.05-1.3 times of the diameter of the second balloon; the second balloon 3 is arranged for circulating cooling liquid inside to further achieve the purpose of cooling and decelerating blood, the expansion degree of the second balloon 3 can be set to be small, meanwhile, the second balloon 3 does not need to observe the size of the expanded second balloon in real time, and only needs normal circulation of the cooling liquid, so that in the actual embolectomy operation process, the pressure inside the second balloon 3 is large, the second balloon 3 can be made of materials such as nylon and pebax, the materials are harder compared, and the structural strength of the second balloon 3 is guaranteed; meanwhile, the second balloon 3 can be fixedly connected with the outer wall of the catheter main body 1 in a connecting mode such as heat sealing, laser welding and ultrasonic welding, and the expanded second balloon 3 can further ensure that the supporting performance and the pushing performance of the catheter main body 1 are not affected.
The application method of the catheter device for mechanical thrombus removal of the blood vessel comprises the following steps: firstly, the whole catheter main body 1 is placed in a blood vessel of a patient, after the catheter main body 1 is placed in place, external liquid filling equipment fills liquid into the first balloon 9 through the channel 2, the diameter of the first balloon 9 is increased along with the increase of filling pressure, the blood flow in the blood vessel is blocked, the flow of thrombus along with the blood is blocked, a small amount of thrombus is prevented from escaping to the far end of the blood vessel in the thrombus taking-out process, the hidden danger of complications of the patient caused by the escape of the thrombus is reduced, and the treatment effect of mechanical thrombus taking-out is improved; after taking out the thrombus from the blood vessel, the shutoff to the blood vessel is released in the first sacculus 9 that contracts, make blood normally circulate (reperfusion), but the blood vessel is in the region of thrombus jam this moment, because of long-term shutoff results in unable blood pressure and the velocity of flow that adapts to normal blood circulation in time, so fill the coolant liquid to a plurality of second sacculus 3 through external cooling equipment, the coolant liquid is at a plurality of second sacculus 3 internal circulation cooling, and then reach the purpose of cooling blood and reducing the blood velocity of flow, reduce the pressure that blood circulation caused to the blood vessel, and then reach the effect that reduces the reperfusion injury, reduce the operation risk of mechanical embolectomy.
As a preferred embodiment of the circulation of the cooling liquid in the plurality of second balloons 3, a liquid inlet 6 and a liquid outlet 7 which are respectively communicated with the liquid inlet channel 4 and the liquid outlet channel 5 are arranged on the outer wall of the catheter main body 1 in each second balloon 3, and specifically, the liquid inlet channel 4 and the liquid outlet channel 5 are arranged in the tube wall of the catheter main body 1 along the length direction thereof; liquid inlets 6 with the same number as the second balloons 3 are arranged on the outer wall of the catheter main body 1, each liquid inlet 6 is matched with one second balloon 3, and each second balloon 3 is communicated with a liquid inlet channel 4 through the liquid inlet 6; a liquid outlet 7 is arranged in the second balloon 3 positioned at the far end of the catheter main body 1, one end of the liquid outlet 7 is communicated with the second balloon 3, and the other end is communicated with the liquid outlet channel 5; the liquid inlet channel 4 and the liquid outlet channel 5 are respectively used for being communicated with a liquid inlet port and a liquid outlet port of external cooling equipment. In the mechanical embolectomy process, the external cooling equipment inputs and outputs cooling liquid into the second balloons 3 through the liquid inlet channel 4 and the liquid outlet channel 5, so that the cooling liquid circulates among the second balloons 3, the purpose of reducing blood is achieved, and the operation requirement that the blood temperature needs to be reduced in the middle period of the operation to protect brain tissues is met.
As a preferred embodiment of filling the developing solution into the first balloon 9, a channel 2 for communicating with the first balloon 9 is arranged in the tube wall of the catheter main body 1, the channel 2 is for communicating with an external liquid filling device, and the cross section of the channel 2 may be in a regular pattern, such as a circle, a rectangle, etc., or may be in an irregular pattern. When a blood vessel needs to be blocked, the developing solution can be filled into the channel 2 through the external liquid filling equipment to enable the first balloon 9 to expand so as to achieve the purpose of blocking the blood vessel to block blood circulation, meanwhile, the developing solution can be displayed on the X-ray equipment, the expansion size of the first balloon 9 can be judged according to the display image, and then a doctor can conveniently judge whether the blood vessel is completely blocked or not.
In order to enable an operator to find the position of the first balloon 9 or the second balloon 3 through X-ray irradiation visualization in the operation process, the operator can conveniently adjust the position of the catheter main body 1 in the blood vessel, a developing mark ring 8 is arranged on a pipe section corresponding to the first balloon 9 or each second balloon 3, and specifically, the developing mark ring 8 can be formed by coating a developing material on the pipe section or can be installed on the corresponding pipe section by adopting an existing developing ring.
The outer walls of the first sacculus 9, the catheter wall of the catheter main body 1 and the outer walls of the second sacculus 3 are provided with a hydrophilic coating or an anticoagulant coating, so that the friction force between the first sacculus 9, the second sacculus 3, the catheter main body 1 and the blood vessel wall can be reduced, the position of the catheter main body 1 in the blood vessel can be conveniently adjusted, and the abrasion of the blood vessel wall can be reduced.
After the first balloon 9 seals blood, thrombus needs to be taken out, a thrombus taking device 10 is arranged in the catheter main body 1, the thrombus taking device 10 comprises a puncture needle 11 arranged in the catheter main body 1, the puncture needle 11 is of a hollow structure, a plurality of contraction arms 12 with uniform intervals are annularly arranged on the circumferential outer wall of the puncture needle 11 close to the tip, and one end of each contraction arm 12 is hinged with the circumferential outer wall;
a cable main line 13 is arranged in the puncture needle 11, a plurality of cable branch lines 14 are arranged at the head end of the cable main line 13, and the tail end of the cable main line 13 penetrates through the catheter main body 1 and is positioned outside the blood vessel;
each cable branch line 14 is matched with one contraction arm 12, and one end of each cable branch line 14 bypasses the hinged point of the contraction arm 12 and penetrates through the pipe wall of the catheter main body 1 to be fixedly connected with the outer side wall of the contraction arm 12.
The use method of the thrombus removal device 10 comprises the following steps: after the position of thrombus in a blood vessel is determined, a catheter main body 1 is penetrated into the blood vessel, then the first balloon 9 is filled with a developing solution to realize the blocking of blood circulation, then a puncture needle 11 is penetrated into the catheter main body 1, at the moment, a plurality of contraction arms 12 are all in a contraction state, each contraction arm 12 is tightly attached to the circumferential outer wall of the catheter main body 1, after the puncture needle 11 encounters the thrombus, the penetration is continued until the plurality of contraction arms 12 on the outer wall of the puncture needle 11 completely penetrate through the whole thrombus, then a stay cable main line 13 is pulled backwards, the stay cable main line 13 simultaneously drives a plurality of stay cable branch lines 14 to move backwards, the plurality of contraction arms 12 rotate by taking a hinge point as a circle center, the plurality of contraction arms 12 are in an opening state, the whole puncture needle 11 is moved backwards, the plurality of contraction arms 12 in the opening state are wrapped on the thrombus, and finally, after the blood is cooled by a second balloon 3, the whole catheter body 1 and the thrombus removal device 10 are pulled out of the blood vessel backwards, so that the thrombus is removed.
As a preferable mode that the plurality of contraction arms 12 are arranged on the circumferential outer wall of the catheter main body 1, an annular groove 15 is arranged on the circumferential outer wall of the catheter main body 1, the plurality of contraction arms 12 are all arranged in the annular groove 15, the cross section of each contraction arm 12 is in a circular arc structure, one end of each contraction arm 12 is hinged with one side wall of the annular groove 15 through a hinge, and the other end of each contraction arm 12 is provided with an elastic contact 16 used for being in contact with the other side wall of the annular groove 15; when the contraction arm 12 retracts into the annular groove 15, the outer wall of the contraction arm 12 is flush with the outer wall of the circumference of the catheter main body 1, and the elastic contact 16 is in pressing contact with the side wall of the annular groove 15, so that the contraction arm 12 can be prevented from automatically opening; meanwhile, a limiting block can be arranged on the side wall of the annular groove 15 and can limit the opening angle of the contraction arm 12. In the process that the puncture needle 11 penetrates through the thrombus, the plurality of accommodating arms are accommodated in the annular groove 15, the outer wall of the contraction arm 12 is flush with the circumferential outer wall of the catheter main body 1, the damage of the puncture needle 11 to the thrombus can be reduced, the damage degree of the thrombus can be reduced, the risk that the thrombus damaged due to the damage to the thrombus escapes along with the blood in the thrombus taking process can be reduced, the thrombus taking treatment effect is improved, and the occurrence of complications is reduced.

Claims (9)

1. A catheter device for mechanical thrombus removal of a blood vessel is characterized by comprising a catheter main body (1), wherein a first balloon (9) for sealing the blood vessel when being inflated is arranged on the outer wall of the far end of the catheter main body (1);
a plurality of second sacculus (3) that communicate each other are provided with the interval between the distal end of pipe main part (1) and the near-end, and a plurality of second sacculus (3) are used for cooling with the blood of external cooling equipment intercommunication in the blood vessel.
2. The catheter device for mechanical thrombus removal according to claim 1, wherein a liquid inlet channel (4) and a liquid outlet channel (5) are arranged in the pipe wall of the catheter main body (1) along the length direction;
a liquid inlet (6) and a liquid outlet (7) which are respectively communicated with the liquid inlet channel (4) and the liquid outlet channel (5) are arranged on the outer wall of the catheter main body (1) in each second saccule (3);
the liquid inlet channel (4) and the liquid outlet channel (5) are respectively communicated with a liquid inlet port and a liquid outlet port of external cooling equipment.
3. Catheter device for mechanical thrombectomy according to claim 1, wherein a channel (2) is disposed in the wall of said catheter body (1) for communicating with said first balloon (9).
4. The catheter device for mechanical thrombectomy of claim 3, wherein the first balloon (9) is a compliant balloon, and the diameter of the first balloon (9) after inflation is 1-6 times of the diameter thereof.
5. The catheter device for mechanical thrombectomy of claim 4, wherein each of said second balloons (3) is a semi-compliant balloon or a non-compliant balloon, and the diameter of the second balloon (3) after being inflated is 1.05 to 1.3 times its diameter.
6. The catheter device for mechanical embolectomy according to claim 5, wherein the corresponding tube segment of the first balloon (9) or each second balloon (3) is provided with a visualization marking ring (8).
7. The catheter device for mechanical thrombus removal according to claim 1, wherein a hydrophilic coating or an anticoagulant coating is arranged on the outer wall of the first balloon (9), the wall of the catheter main body (1) and the outer walls of the plurality of second balloons (3).
8. The catheter device for mechanical thrombus extraction of the blood vessel as claimed in claim 1, wherein the catheter body (1) is internally provided with a thrombus extraction device (10), the thrombus extraction device (10) comprises a puncture needle (11) arranged inside the catheter body (1), the puncture needle (11) is of a hollow structure, a plurality of uniformly spaced contraction arms (12) are annularly arranged on the circumferential outer wall of the puncture needle (11) close to the tip, and one end of each contraction arm (12) is hinged with the circumferential outer wall;
a main cable wire (13) is arranged in the puncture needle (11), a plurality of branch cable wires (14) are arranged at the head end of the main cable wire (13), and the tail end of the main cable wire (13) penetrates through the catheter main body (1) and is positioned outside the blood vessel;
each guy cable branch line (14) is matched with one contraction arm (12), and one end of each guy cable branch line (14) bypasses the hinged point of the contraction arm (12) and penetrates through the pipe wall of the catheter main body (1) to be fixedly connected with the outer side wall of the contraction arm (12).
9. The catheter device for mechanical thrombus removal according to claim 8, wherein an annular groove (15) is arranged on the outer circumferential wall of the catheter main body (1), a plurality of the contraction arms (12) are arranged in the annular groove (15), the cross section of each contraction arm (12) is in a circular arc structure, one end of each contraction arm (12) is hinged with one side wall of the annular groove (15) through a hinge, and the other end of each contraction arm (12) is provided with an elastic contact (16) for contacting with the other side wall of the annular groove (15); when the contraction arm (12) retracts into the annular groove (15), the outer wall of the contraction arm (12) is flush with the circumferential outer wall of the catheter main body (1), and the elastic contact (16) is in pressing contact with the side wall of the annular groove (15).
CN202111566006.1A 2021-12-20 2021-12-20 Catheter device for mechanical thrombus removal of blood vessel Active CN114403981B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111566006.1A CN114403981B (en) 2021-12-20 2021-12-20 Catheter device for mechanical thrombus removal of blood vessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111566006.1A CN114403981B (en) 2021-12-20 2021-12-20 Catheter device for mechanical thrombus removal of blood vessel

Publications (2)

Publication Number Publication Date
CN114403981A true CN114403981A (en) 2022-04-29
CN114403981B CN114403981B (en) 2023-11-28

Family

ID=81266981

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111566006.1A Active CN114403981B (en) 2021-12-20 2021-12-20 Catheter device for mechanical thrombus removal of blood vessel

Country Status (1)

Country Link
CN (1) CN114403981B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115192304A (en) * 2022-07-15 2022-10-18 成都百瑞恒通医疗科技有限公司 Blood cooling catheter and blood cooling equipment
WO2024067241A1 (en) * 2022-09-28 2024-04-04 神途医疗科技(上海)有限公司 Occlusion catheter and medical system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010018596A1 (en) * 1997-02-28 2001-08-30 Selmon Matthew R. Methods and apparatus for treating vascular occlusions
US20180303663A1 (en) * 2015-10-12 2018-10-25 Acandis Gmbh & Co. Kg Balloon catheter for endovascular temperature control

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010018596A1 (en) * 1997-02-28 2001-08-30 Selmon Matthew R. Methods and apparatus for treating vascular occlusions
US20180303663A1 (en) * 2015-10-12 2018-10-25 Acandis Gmbh & Co. Kg Balloon catheter for endovascular temperature control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115192304A (en) * 2022-07-15 2022-10-18 成都百瑞恒通医疗科技有限公司 Blood cooling catheter and blood cooling equipment
WO2024067241A1 (en) * 2022-09-28 2024-04-04 神途医疗科技(上海)有限公司 Occlusion catheter and medical system

Also Published As

Publication number Publication date
CN114403981B (en) 2023-11-28

Similar Documents

Publication Publication Date Title
EP3646806B1 (en) Mechanical thrombus removal device
CN114403981A (en) Catheter device for mechanical thrombus removal of blood vessel
US6190356B1 (en) Helical spiral balloon catheter
US6475185B1 (en) Occlusion device
JP4267927B2 (en) Embolization prevention device
KR102600886B1 (en) Blood clot extraction device and blood clot extraction method
EP1165157B1 (en) Apparatus and method for selectively delivering medication to a wall section of a body cavity or blood vessel
US5100425A (en) Expandable transluminal atherectomy catheter system and method for the treatment of arterial stenoses
EP2051768B1 (en) Fibroid treatment apparatus
US20090156983A1 (en) Rheolytic thrombectomy catheter with self-inflating distal balloon
EP1959842A2 (en) Exhaust-pressure-operated balloon catheter system
JPH0438435B2 (en)
JPH0374589B2 (en)
WO2024045386A1 (en) Thrombolytic apparatus
CN115530923B (en) Lumen opening instrument and lumen opening system
CN116849760A (en) Catheter for thrombolysis and ultrasonic thrombolysis system
CN113398439B (en) Double-balloon thrombolytic thrombus taking device
CN115919412A (en) Blood vessel thrombus taking device
CN209827932U (en) Seal wire anchoring balloon component
CN217567109U (en) Catheter device for vascular interventional therapy
CN213606679U (en) Auxiliary device for taking thrombus
CN217793259U (en) Endoscopic injection needle for treating varicose vein of digestive tract
CN212789403U (en) Catheter tube
CN219126557U (en) Acoustic balloon catheter system
CN217987671U (en) Neural scope channel device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address

Address after: 610200 Chengdu Tianfu international biological city, Shuangliu District, Chengdu, Sichuan (Annex 305, building 4, No. 618, Fenghuang Road)

Patentee after: Chengdu Xinchuang Medical Equipment Co.,Ltd.

Address before: 610000 Tianfu international biological city, Chengdu, Sichuan (No. 618, Fenghuang Road, Shuangliu District)

Patentee before: Chengdu bairuihengtong Medical Technology Co.,Ltd.

CP03 Change of name, title or address