CN114931696A - Radial artery access nerve intervention catheter - Google Patents
Radial artery access nerve intervention catheter Download PDFInfo
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- CN114931696A CN114931696A CN202210553925.3A CN202210553925A CN114931696A CN 114931696 A CN114931696 A CN 114931696A CN 202210553925 A CN202210553925 A CN 202210553925A CN 114931696 A CN114931696 A CN 114931696A
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- traction part
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- 210000002321 radial artery Anatomy 0.000 title claims abstract description 43
- 210000005036 nerve Anatomy 0.000 title claims abstract description 35
- 210000002376 aorta thoracic Anatomy 0.000 claims abstract description 89
- 238000004804 winding Methods 0.000 claims abstract description 34
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000007917 intracranial administration Methods 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 9
- 229920002614 Polyether block amide Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 208000007536 Thrombosis Diseases 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 210000001105 femoral artery Anatomy 0.000 description 3
- 238000002560 therapeutic procedure Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 210000005259 peripheral blood Anatomy 0.000 description 2
- 239000011886 peripheral blood Substances 0.000 description 2
- 206010002329 Aneurysm Diseases 0.000 description 1
- 208000005168 Intussusception Diseases 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- 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
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0074—Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
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- 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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M2025/0063—Catheters; Hollow probes characterised by structural features having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a radial artery access nerve interventional catheter, which belongs to the field of medical instruments and comprises a guide catheter and a functional catheter; the end part of the built-in end of the guide catheter is pre-shaped and then bent into an arc shape to serve as an aortic arch winding traction part, a guide wire is inserted into the guide catheter, and the aortic arch winding traction part is supported by the guide wire to be maintained in a linear state; the wall of the functional catheter is provided with an expansion groove corresponding to the direction of an outer arc around the traction part of the aortic arch. The invention is scientific and reasonable, is convenient to use, has high success rate of entering branch blood vessels from the aortic arch through radial artery puncture, is beneficial to the functional catheter to be sent into the branch blood vessels along the traction part around the aortic arch after being pre-shaped around the traction part of the aortic arch and to be sent to a target treatment part, and is beneficial to thrombus suction or appliance delivery after the guide catheter is removed. The expansion groove prevents the functional conduit from being accumulated with materials when being bent, and avoids the situation that the functional conduit cannot be bent and cannot pass through the guide conduit due to the accumulation of the materials around the traction part of the aortic arch.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a radial artery access nerve interventional catheter.
Background
Neuro-interventional surgery is a minimally invasive procedure for treating intracranial vascular diseases by expanding, removing, and delivering drugs to occluded blood vessels through intravascular catheters. This procedure is usually performed by puncturing the femoral artery through which a nerve catheter is passed into the intracranial vessel to embolize, dilate or stent the aneurysm. People sit for a long time and exercise amount is small nowadays, which causes the femoral artery to deform due to long-term compression, and the success rate of femoral artery interventional therapy is small. If the radial artery of the upper limb is adopted, the interventional therapy can also be carried out, the nerve conduit enters the aortic arch through the radial artery, and then enters the intracranial operation part from the intracranial branch vessel on the aortic arch for treatment. However, the aortic arch is in a curved arch shape, the branch blood vessels are connected with the upper edge of the arch, and the existing nerve conduit enters from the radial artery and can only reach the aortic arch, can not accurately enter the branch blood vessels, and can not realize interventional therapy of radial artery puncture. Therefore, a radial artery access nerve interventional catheter is required to solve the above problems.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a radial artery access nerve interventional catheter for solving the problem that a nerve catheter cannot accurately enter a branch blood vessel in the prior art.
The technical scheme is as follows: the invention discloses a radial artery access nerve interventional catheter, which comprises a hollow tubular guide catheter and a functional catheter, wherein a cavity in the guide catheter is a first guide cavity, and a cavity in the functional catheter is a second guide cavity;
the end part of the built-in end of the guide catheter is pre-shaped and then bent into an arc shape to serve as an aortic arch winding traction part, a guide wire is inserted into the guide catheter, and the aortic arch winding traction part is supported by the guide wire to be maintained in a linear state;
the functional catheter is a linear catheter, the wall of the functional catheter is provided with an expansion groove with the same length as the functional catheter, and the position of the expansion groove is opposite to the direction of an outer arc around the aortic arch traction part;
the guide catheter is sleeved in the second guide cavity, the placing end of the guide catheter is placed into the aortic arch through the radial artery, the guide wire is drawn out of the guide catheter, the guide catheter bends around the aortic arch traction part towards the intracranial branch blood vessel under the pre-shaped acting force, and the guide catheter bends around the aortic arch traction part and enters the branch blood vessel by bypassing the aortic arch; the functional catheter takes a guide catheter as a guide, enters the intracranial operation part through a radial artery, an aortic arch and the branch blood vessel to reach an indwelling position, is drawn out of the guide catheter, and takes a second guide cavity as a treatment channel.
In order to make the guide catheter enter the aortic arch smoothly, a guide wire is arranged inside the guide catheter. In order to allow the functional catheter to enter the intracranial branch vessel through the aortic arch and deliver to the target treatment site, a guiding catheter is provided. In order to ensure that the traction part of the guide catheter around the aortic arch smoothly enters the aortic arch and probes into the branch blood vessel, the traction part around the aortic arch is pre-shaped, and is linear around the traction part of the aortic arch under the condition of the existence of a guide wire, so that the guide catheter can conveniently advance in the radial artery; under the condition that the guide wire is removed, the functional catheter is bent around the aortic arch traction part during shaping, so that the tail end of the aortic arch traction part can be conveniently inserted into the branch blood vessel, and the functional catheter can be conveniently fed into the branch blood vessel along the bending around the aortic arch traction part. When the functional catheter passes through the curved traction part around the aortic arch, the functional catheter can be bent along the shape of the traction part around the aortic arch, the expansion groove is favorable for preventing the functional catheter from being accumulated with materials when being bent, the situation that the functional catheter cannot be bent due to the accumulation of the materials around the traction part around the aortic arch and cannot pass through the guide catheter is avoided, and the functional catheter is favorable for smoothly entering a branch blood vessel and reaching a target treatment part through the guide catheter.
Preferably, the other end of the traction part around the aortic arch is connected with a linear traction part; the aortic arch winding traction part comprises a first arc part, one end of the first arc part is connected with the linear traction part and is bent along the axis direction of the functional catheter and in the direction far away from the linear traction part; the other end of the first arc part is connected with a connecting part parallel to the linear traction part, the other end of the connecting part is connected with a second arc part, and the bending direction of the second arc part is opposite to that of the first arc part.
In order to change the axis direction of the linear traction part of the guide catheter, the first arc part is arranged, the tail end of the first arc part is opposite to the inlet direction of the branch blood vessel, and the connecting part is favorable for extending into the branch blood vessel around the traction part of the aortic arch and conveying the functional catheter into the branch blood vessel. The second arc part avoids the damage to the inner wall of the branch vessel around the traction part of the aortic arch.
Preferably, the radian of the first arc part is 180 degrees, and the radian of the second arc part is less than or equal to 90 degrees.
Preferably, the guide catheter and the functional catheter are of a three-layer structure.
Preferably, the inner layer material of the guide conduit and the functional conduit is polytetrafluoroethylene or block polyether amide resin; the outer layer materials of the guide catheter and the functional catheter are block polyether amide resin.
Preferably, the middle layer of the guide catheter is a braided layer, and the pore density of the braided layer is 20-100 ppi.
Preferably, the middle layer of the functional conduit is a winding layer, and the expansion slot is positioned on the winding layer; the functional catheter is characterized in that one end, close to the traction part around the aortic arch, of the functional catheter is a distal end part, one end, far away from the traction part around the aortic arch, of the functional catheter is a proximal end part, the winding distance of the winding layers at the distal end part is 0.05-0.3 mm, and the winding distance of the winding layers at the proximal end part 9 is 0.01-0.1 mm; the distal portion is flexible material, the proximal portion is rigid material. The winding distance of the distal end part is larger than that of the closer end part, which is beneficial to smoothly pass through the bending part around the traction part of the aortic arch. The flexible material is convenient for bending.
Preferably, one end of the proximal portion, which is far away from the distal portion, is provided with a second tail portion, the second tail portion is provided with a second pair of bit lines, and the expansion slot corresponds to the second pair of bit lines. The second pair of bit lines mark the position of the expansion slot, which is beneficial for medical staff to identify the relative position between the expansion slot and the outer arc of the first arc part.
Preferably, one end of the linear traction part, which is far away from the traction part around the aortic arch, is provided with a first tail part, and the first tail part is provided with a first contraposition line used for marking the outer arc direction of the first arc part. First counterpoint line and second counterpoint line cooperation are used for the expansion groove is relative with the outer arc of first circular arc portion, is favorable to the function pipe to get into the branch blood vessel through first circular arc portion smoothly, avoids the function pipe to pile up unable the buckling because of the material at the in-process of buckling.
Preferably, the guide catheter is in interference fit with the second guide cavity; the length range of the guide conduit is 135-190 cm, and the outer diameter of the guide conduit is 4-6F; the distal end portion length range of function pipe is 10 ~ 40cm, and proximal portion length range is 100 ~ 130cm, the external diameter of function pipe is 5 ~ 7F. The outer wall of the guide catheter is tightly attached to the inner wall of the functional catheter, so that peripheral blood vessels are prevented from being damaged when the functional catheter is pushed.
Has the advantages that: (1) the device is provided with a guide catheter, a functional catheter and a guide wire, and the guide catheter is pre-shaped around an aortic arch traction part. The device is linear around the aortic arch traction part under the condition of a guide wire, so that the device can conveniently advance in the radial artery; under the condition that the guide wire is removed, the functional catheter is bent around the aortic arch traction part during shaping, the tail end of the aortic arch traction part can be inserted into a branch blood vessel, the functional catheter can be conveyed into the branch blood vessel along the bending around the aortic arch traction part and conveyed to a target treatment part, the functional catheter left in the blood vessel after the guide catheter is removed plays a role in treatment, and thrombus suction or instrument conveying is facilitated. After the nerve conduit is punctured through the radial artery, the nerve conduit can smoothly enter a branch blood vessel from an aortic arch without being influenced by the shape of the aortic arch and the position of the branch blood vessel, and the success rate is high.
(2) The winding layer of the functional catheter of the device is provided with the expansion groove, when the functional catheter passes through the bent traction part around the aortic arch, the functional catheter can bend along the shape of the traction part around the aortic arch, the expansion groove is favorable for preventing materials from being accumulated when the functional catheter is bent, the situation that the functional catheter cannot bend due to the accumulation of the materials around the traction part of the aortic arch and cannot pass through the guide catheter is avoided, and the functional catheter is favorable for smoothly entering a branch blood vessel and reaching a target treatment part through the guide catheter. The first afterbody of guide pipe is equipped with first counterpoint line, and the second afterbody of function pipe is equipped with the second counterpoint line, and the extension groove is corresponding with second counterpoint line position, and first counterpoint line and second counterpoint line cooperate the use for the function pipe is when impelling to branch's blood vessel, the extension groove is relative with first circular arc portion outer arc all the time, is favorable to the function pipe to get into branch's blood vessel through first circular arc portion smoothly, avoids the function pipe to pile up unable the buckling because of the material at the in-process of buckling.
Drawings
FIG. 1 is a schematic view of a radial artery access nerve interventional catheter in an assembled state according to the present invention;
FIG. 2 is a schematic view of a guiding catheter of a radial artery access nerve interventional catheter according to the present invention;
FIG. 3 is a schematic structural view of a guiding catheter of a radial artery access nerve interventional catheter around an aortic arch traction part according to the present invention;
FIG. 4 is a schematic view of a guiding catheter braid of a radial artery access nerve interventional catheter in accordance with the present invention;
FIG. 5 is a schematic structural diagram of a functional catheter of a radial artery access nerve interventional catheter of the present invention;
FIG. 6 is a schematic diagram of a functional catheter winding layer of a radial artery access nerve interventional catheter according to the present invention;
FIG. 7 is a schematic view of the intussusception cross section of the guiding catheter and the functional catheter of the radial artery access nerve interventional catheter of the present invention;
FIG. 8 is a cross-sectional view of a functional catheter for a radial artery access nerve interventional catheter according to the present invention;
FIG. 9 is a schematic view of the insertion (removal of the guide wire) of a radial artery access nerve interventional catheter according to the present invention;
FIG. 10 is a schematic view of the insertion (removal of the guiding catheter) structure of a radial artery access nerve interventional catheter of the present invention;
reference numbers in the figures: 1. a guide catheter; 2. a functional catheter; 3. a first guide cavity; 4. a second guide cavity; 5. a traction part around the aortic arch; 501. a first arc portion; 502. a connecting portion; 503. a second arc portion; 6. a linear traction part; 7. a first tail portion; 701. a first pair of bit lines; 8. a distal portion; 9. a proximal end portion; 10. a second tail portion; 1001. a second pair of bit lines; 11. weaving layer; 12. a winding layer; 1201. and expanding the slot.
Detailed Description
The technical solutions of the present invention are described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1: as shown in fig. 1-10, a radial artery access nerve interventional catheter comprises a hollow tubular guiding catheter 1 and a functional catheter 2, wherein a cavity in the guiding catheter 1 is a first guiding cavity 3, and a cavity in the functional catheter 2 is a second guiding cavity 4; the guide catheter 1 leads the functional catheter 2 to enter the intracranial branch vessel through the aortic arch and to be sent to a target treatment site;
the end part of the placing end of the guide catheter 1 is bent into an arc shape after being pre-shaped and serves as an aortic arch winding traction part 5, and the guide catheter is convenient to insert into intracranial branch blood vessels, so that the functional catheter 2 is fed into the branch blood vessels along the bending of the aortic arch winding traction part 5; a guide wire is inserted into the guide catheter 1 and is maintained in a linear state around the aortic arch traction part 5 under the support of the guide wire, so that the guide catheter 1 can conveniently advance in the radial artery and smoothly enter the aortic arch;
the functional catheter 2 is a linear catheter, the wall of the linear catheter is provided with an expansion groove 1201 which is as long as the functional catheter 2, and the position of the expansion groove 1201 is opposite to the direction of an outer arc around the aortic arch traction part 5; when the functional catheter 2 passes through the curved aortic arch traction part 5, the functional catheter 2 can be bent along the shape of the aortic arch traction part, the expansion groove 1201 prevents materials from being accumulated when the functional catheter 2 is bent, the situation that the functional catheter 2 cannot be bent due to the accumulation of the materials and cannot pass through the guide catheter 1 when the functional catheter 2 passes through the curved aortic arch traction part 5 is avoided, and the functional catheter 2 can smoothly enter a branch vessel through the guide catheter 1 and reach a target treatment part.
The guide catheter 1 is sleeved in the second guide cavity 4, the placing end of the guide catheter 1 is placed into an aortic arch through a radial artery, a guide wire is drawn out of the guide catheter 1, bends towards the intracranial branch blood vessel under the pre-shaping acting force around the aortic arch traction part 5, and enters the branch blood vessel around the aortic arch traction part 5; the functional catheter 2 takes the guide catheter 1 as a guide, enters the intracranial operation part through a radial artery, an aortic arch and a branch blood vessel to reach an indwelling position, is drawn away from the guide catheter 1, and takes the second guide cavity 4 as a treatment channel.
The other end of the aortic arch traction part 5 is connected with a linear traction part 6; the aortic arch winding traction part 5 comprises a first arc part 501, one end of the first arc part 501 is connected with the linear traction part 6 and is bent along the axis direction of the functional catheter 2 and the direction far away from the linear traction part 6, and the first arc part 501 changes the advancing direction of the linear traction part 6 of the guide catheter 1; the other end of the arc part 501 is connected with a connecting part 502 which is parallel to the linear traction part 6, so that the traction part 5 around the aortic arch is inserted into the branch vessel; the other end of the connecting portion 502 is connected to a second arc portion 503, and the second arc portion 503 is bent in a direction opposite to the first arc portion 501. The second arc 503 avoids damage to the inner wall of the branch vessel around the aortic arch traction part 5.
The radian of the first arc part is 180 degrees, and the radian of the second arc part is less than or equal to 90 degrees.
The guide catheter and the functional catheter are of a three-layer structure.
The inner layer materials of the guide conduit and the functional conduit are polytetrafluoroethylene or block polyether amide resin; the outer layer material of the guide conduit and the functional conduit is block polyether amide resin.
The middle layer of the guide conduit is a braided layer, and the pore density of the braided layer is 20-100 ppi.
The middle layer of the functional conduit 2 is a winding layer 12, and the expansion slot 1201 is positioned on the winding layer 12; the functional catheter 2 is characterized in that one end close to the traction part 5 around the aortic arch is a distal end part 8, one end far away from the traction part 5 around the aortic arch is a proximal end part 9, the winding space of the winding layer 12 positioned on the distal end part 8 is 0.05-0.3 mm, and the winding space of the winding layer 12 positioned on the proximal end part 9 is 0.01-0.1 mm; the distal portion 8 is made of a flexible material and the proximal portion 9 is made of a rigid material. The winding distance of the distal end part 8 is larger than that of the proximal end part 9, so that the functional catheter 2 can smoothly pass through the bending part around the aortic arch traction part 5. The flexible material is convenient for bending.
The end of the proximal portion 9 remote from the distal portion 8 is provided with a second tail portion 10, the second tail portion 10 is provided with a second pair of bitlines 1001, and the expansion slots 1201 correspond to the second pair of bitlines 1001. The second pair of bit lines 1001 marks the position of the expanded slot 1201, and medical personnel thereby identify the relative position of the expanded slot 1201 and the outer arc of the first arc portion 501.
One end of the linear traction part 6, which is far away from the traction part 5 around the aortic arch, is provided with a first tail part 7, and the first tail part 7 is provided with a first pair of bit lines 701 for marking the outer arc direction of the first arc part 501. First counterpoint bit line 701 and second counterpoint bit line 1001 cooperate the use for expansion groove 1201 is relative with first circular arc portion 501 outer arc, and the function pipe 2 of being convenient for gets into the branch blood vessel smoothly through first circular arc portion 501, avoids function pipe 2 to pile up unable the buckling because of the material in the process of buckling.
The guide catheter 1 is in interference fit with the second guide cavity 4; the length range of the guide conduit 1 is 135-190 cm, and the outer diameter is 4-6F; the length range of the distal end part 8 of the functional catheter 2 is 10-40 cm, the length range of the proximal end part 9 of the functional catheter 2 is 100-130 cm, and the outer diameter of the functional catheter 2 is 5-7F. The outer wall of the guide catheter 1 is tightly attached to the inner wall of the functional catheter 2, so that peripheral blood vessels are prevented from being damaged when the functional catheter 2 is pushed.
The working principle of the invention is as follows: when the guide catheter is used, the guide catheter 1 is sleeved inside the functional catheter 2, the guide wire penetrates through the guide catheter 1, and the pre-shaped guide catheter 1 is in a linear shape around the aortic arch traction part 5 under the action of the guide wire. The nerve conduit enters the aortic arch through the radial artery of the upper arm of the patient. The first tail portion 7 is rotated so that the first pair of position lines 701 faces away from the branch vessel, the guide wire is withdrawn at this time, the curve shape is formed around the aortic arch traction portion 5 during pre-shaping, and the connecting portion 502 and the second arc portion 503 are inserted into the branch vessel. The second tail part 10 is rotated to enable the first pair of bit lines 701 to be opposite to the second pair of bit lines 1001, and at the moment, the expansion groove 1201 of the functional catheter 2 is opposite to the first arc part 501, so that the functional catheter 2 smoothly passes through the traction part 5 around the aortic arch and is not affected by material accumulation. When the functional catheter 2 reaches the intracranial operation site, the guide catheter 1 is withdrawn, and the functional catheter 2 is left in the body of the patient.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited to the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A radial artery access nerve interventional catheter, characterized by: the catheter comprises a hollow tubular guide catheter (1) and a functional catheter (2), wherein a cavity in the guide catheter (1) is a first guide cavity (3), and a cavity in the functional catheter (2) is a second guide cavity (4);
the end part of the built-in end of the guide catheter (1) is pre-shaped and then bent into an arc shape to serve as an aortic arch winding traction part (5), a guide wire is inserted into the guide catheter (1), and the aortic arch winding traction part (5) is maintained in a linear state under the support of the guide wire;
the functional catheter (2) is a linear catheter, an expansion groove (1201) with the same length as the functional catheter (2) is formed in the wall of the linear catheter, and the position of the expansion groove (1201) is opposite to the outer arc direction of the aortic arch traction part (5);
the guide catheter (1) is sleeved in the second guide cavity (4), the placing end of the guide catheter (1) is placed into an aortic arch through a radial artery, a guide wire is drawn out of the guide catheter (1), the guide catheter bends around an aortic arch traction part (5) under pre-shaping acting force towards the direction of intracranial branch blood vessels, and the guide catheter bends around the aortic arch traction part (5) and enters the branch blood vessels around the aortic arch; the functional catheter (2) is guided by the guide catheter (1), enters the intracranial operation site through the radial artery, the aortic arch and the branch vessel to reach an indwelling position, is drawn away from the guide catheter (1), and the second guide cavity (4) is used as a treatment channel.
2. The radial artery access nerve interventional catheter as set forth in claim 1, wherein: the other end of the aortic arch traction part (5) is connected with a linear traction part (6); the aortic arch winding traction part (5) comprises a first arc part (501), one end of the first arc part (501) is connected with the linear traction part (6), and the first arc part bends towards the direction far away from the linear traction part (6) along the axis direction of the functional catheter (2); the other end of the first arc portion (501) is connected with a connecting portion (502) parallel to the linear traction portion (6), the other end of the connecting portion (502) is connected with a second arc portion (503), and the bending direction of the second arc portion (503) is opposite to that of the first arc portion (501).
3. The radial artery access nerve interventional catheter as claimed in claim 2, wherein: the radian of the first arc part (501) is 180 degrees, and the radian of the second arc part (503) is smaller than or equal to 90 degrees.
4. A radial artery access nerve interventional catheter as claimed in any one of claims 1 to 3, wherein: the guide catheter (1) and the functional catheter (2) are of a three-layer structure.
5. The radial artery access nerve interventional catheter as set forth in claim 4, wherein: the inner layer materials of the guide catheter (1) and the functional catheter (2) are polytetrafluoroethylene or block polyether amide resin; the outer layer materials of the guide conduit (1) and the functional conduit (2) are block polyether amide resin.
6. The radial artery access nerve interventional catheter as set forth in claim 4, wherein: the middle layer of the guide catheter (1) is a braided layer (11), and the range of the pore density of the braided layer (11) is 20-100 ppi.
7. The radial access nerve interventional catheter as set forth in claim 4, wherein: the middle layer of the functional conduit (2) is a winding layer (12), and the expansion groove (1201) is positioned on the winding layer (12); one end of the functional catheter (2) close to the traction part (5) around the aortic arch is a distal end part (8), one end far away from the traction part (5) around the aortic arch is a proximal end part (9), the winding distance of the winding layer (12) positioned at the distal end part (8) is 0.05-0.3 mm, and the winding distance of the winding layer (12) positioned at the proximal end part (9) is 0.01-0.1 mm; the distal end portion (8) is made of flexible materials, and the proximal end portion (9) is made of rigid materials.
8. The radial artery access nerve interventional catheter as set forth in claim 7, wherein: the end, far away from the distal end portion (8), of the proximal end portion (9) is provided with a second tail portion (10), the second tail portion (10) is provided with a second pair of bit lines (1001), and the expansion grooves (1201) correspond to the second pair of bit lines (1001) in position.
9. The radial artery access nerve interventional catheter as set forth in claim 8, wherein: one end, far away from traction part (5) around aortic arch, of linear traction part (6) is provided with a first tail part (7), and first tail part (7) is provided with a first pair of bit lines (701) for marking the outer arc direction of first arc part (501).
10. The radial artery access nerve interventional catheter as claimed in claim 1, wherein: the guide catheter (1) is in interference fit with the second guide cavity (4); the length range of the guide conduit (1) is 135-190 cm, and the outer diameter is 4-6F; distal portion (8) length range of function pipe (2) is 10 ~ 40cm, and proximal portion (9) length range is 100 ~ 130cm, the external diameter of function pipe (2) is 5 ~ 7F.
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| CN202210553925.3A CN114931696A (en) | 2022-05-19 | 2022-05-19 | Radial artery access nerve intervention catheter |
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| CN202210553925.3A CN114931696A (en) | 2022-05-19 | 2022-05-19 | Radial artery access nerve intervention catheter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116036444A (en) * | 2023-04-03 | 2023-05-02 | 心岭医疗科技(无锡)有限公司 | Preparation method of high-flexibility transradial artery access nerve intervention kit |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101128168A (en) * | 2005-01-20 | 2008-02-20 | 弗劳恩霍弗实用研究促进协会 | Catheter for the transvascular implantation of prosthetic heart valves |
| US20080125715A1 (en) * | 2006-11-21 | 2008-05-29 | David Elliot Cohen | Shaped Introducer For Vascular Access |
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| KR101403656B1 (en) * | 2013-04-23 | 2014-06-05 | 주식회사 두배시스템 | Intravascular therapeutic operating apparatus |
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| CN204619123U (en) * | 2015-04-16 | 2015-09-09 | 中国人民解放军第二炮兵总医院 | Through right radial artery approach cerebral catheter |
| CN107837105A (en) * | 2016-09-18 | 2018-03-27 | 先健科技(深圳)有限公司 | Puncture conduit and tissue deflation system |
| CN112245761A (en) * | 2020-11-11 | 2021-01-22 | 广东省人民医院 | Trans-right radial artery III type aortic arch whole brain angiography catheter |
| CN113993570A (en) * | 2019-09-30 | 2022-01-28 | 泰尔茂株式会社 | Catheter tube |
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2022
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| CN101128168A (en) * | 2005-01-20 | 2008-02-20 | 弗劳恩霍弗实用研究促进协会 | Catheter for the transvascular implantation of prosthetic heart valves |
| US20080125715A1 (en) * | 2006-11-21 | 2008-05-29 | David Elliot Cohen | Shaped Introducer For Vascular Access |
| CN101259014A (en) * | 2006-11-28 | 2008-09-10 | 导管治疗有限公司 | A catheter steering system |
| KR101403656B1 (en) * | 2013-04-23 | 2014-06-05 | 주식회사 두배시스템 | Intravascular therapeutic operating apparatus |
| CN104740747A (en) * | 2015-04-03 | 2015-07-01 | 潘湘斌 | Ultrasonic-guided percutaneous interventional therapy guide system for arterial duct and usage method thereof |
| CN204619123U (en) * | 2015-04-16 | 2015-09-09 | 中国人民解放军第二炮兵总医院 | Through right radial artery approach cerebral catheter |
| CN107837105A (en) * | 2016-09-18 | 2018-03-27 | 先健科技(深圳)有限公司 | Puncture conduit and tissue deflation system |
| CN113993570A (en) * | 2019-09-30 | 2022-01-28 | 泰尔茂株式会社 | Catheter tube |
| CN112245761A (en) * | 2020-11-11 | 2021-01-22 | 广东省人民医院 | Trans-right radial artery III type aortic arch whole brain angiography catheter |
Cited By (2)
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| CN116036444A (en) * | 2023-04-03 | 2023-05-02 | 心岭医疗科技(无锡)有限公司 | Preparation method of high-flexibility transradial artery access nerve intervention kit |
| CN116036444B (en) * | 2023-04-03 | 2023-05-30 | 心岭医疗科技(无锡)有限公司 | Preparation method of high-flexibility transradial artery access nerve intervention kit |
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