CN115317769A - Cardiovascular dilator - Google Patents
Cardiovascular dilator Download PDFInfo
- Publication number
- CN115317769A CN115317769A CN202211137149.5A CN202211137149A CN115317769A CN 115317769 A CN115317769 A CN 115317769A CN 202211137149 A CN202211137149 A CN 202211137149A CN 115317769 A CN115317769 A CN 115317769A
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- driving
- blood vessel
- wall
- limiting
- fixedly connected
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- 230000002526 effect on cardiovascular system Effects 0.000 title claims abstract description 27
- 230000000916 dilatatory effect Effects 0.000 claims abstract description 9
- 239000003814 drug Substances 0.000 claims description 17
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000010339 dilation Effects 0.000 claims description 2
- 238000012377 drug delivery Methods 0.000 claims 3
- 229940079593 drug Drugs 0.000 claims 2
- 210000004204 blood vessel Anatomy 0.000 abstract description 41
- 230000000740 bleeding effect Effects 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 210000004712 air sac Anatomy 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 208000007536 Thrombosis Diseases 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 210000002489 tectorial membrane Anatomy 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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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
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
-
- 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
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
Abstract
The invention discloses a cardiovascular dilator, which comprises a conveying pipe and a dilating driver, wherein a bearing block is fixedly arranged at the center of the far end face of the conveying pipe, a plurality of limiting shells are distributed on the circumferential outer wall of the bearing block, limiting grooves are formed in the limiting shells, driving columns are arranged in the limiting grooves in a limiting sliding manner, the outer ends of the driving columns are connected with a dilating component, and the outer wall of the dilating component is fixedly connected with an annular air bag; the strutting assembly comprises a primary strutting assembly and a secondary strutting assembly, and the primary strutting assembly and the secondary strutting assembly sequentially expand outwards under the driving of expansion driving. In the invention, the second support plate can enable the covered stent to be better attached to the blood vessel of a patient, in addition, the first support plate and the second support plate are sequentially unfolded, after the first support plate is unfolded, the blood vessel condition can be further judged, the risk of rupture and bleeding of the patient due to the fragile blood vessel is reduced, the blood vessel can be preliminarily adapted to the covered stent, and the covered stent can be completely unfolded to expand the blood vessel subsequently.
Description
Technical Field
The invention relates to the technical field of equipment for treating cardiovascular diseases, in particular to a cardiovascular dilator.
Background
In order to cure patients suffering from severe stenosis or occlusion of lower limbs, a cardiovascular dilator is often used by related medical personnel to dilate the stenotic blood vessel of the patients when the related medical personnel treat the patients. The patent document with the prior art publication number of CN212880585U provides a cardiovascular dilator, the device realizes the detachability of an air bag sleeve, is convenient for workers to replace the air bag sleeve, ensures that components except an air bag can still be reused after being disinfected and cleaned, and improves the service life and the use value; meanwhile, in order to avoid the complete blockage of the blood vessel, the device is provided with a limiting sleeve outside the air sac sleeve, so that the two sides of the air sac sleeve are not hindered to freely expand, the cardiovascular is expanded, and the blood flow is allowed to pass through without the expansion part of the air sac sleeve. However, in the actual use process, only two sides of the air bag sleeve are expanded without obstruction, so that the covered stent cannot be completely attached to the blood vessel; meanwhile, due to the particularity of the blood vessel wall, the blood vessel is easily broken due to uneven stress, so that various complications are caused, and even the life safety of a patient is seriously threatened.
In summary, it is a problem to be solved urgently how to achieve complete adhesion between the stent graft and the blood vessel and avoid rupture of the blood vessel while ensuring smooth blood flow.
Disclosure of Invention
1. Technical problem to be solved
The present invention aims to provide a cardiovascular dilator to solve the problems set forth in the background art.
2. Technical scheme
A cardiovascular dilator comprises a conveying pipe 1 and a dilating driver, and is characterized in that a bearing block 24 is fixedly mounted at the center of the far end face of the conveying pipe 1, a plurality of limiting shells 2 are annularly and equidistantly distributed on the circumferential outer wall of the bearing block 24, limiting grooves 201 are formed in the limiting shells 2, driving columns 20 are in limited sliding in the limiting grooves 201, the outer ends of the driving columns 20 are connected with dilating components, and annular air bags 21 are fixedly connected with the outer walls of the dilating components; the strutting assembly comprises a primary strutting assembly and a secondary strutting assembly, and the primary strutting assembly and the secondary strutting assembly sequentially expand outwards under the driving of expansion driving.
Preferably, the primary distraction assembly comprises a plurality of first supporting plates 6, the secondary distraction assembly comprises a plurality of second supporting plates 7, and the plurality of first supporting plates 6 and the plurality of second supporting plates 7 are arranged in a staggered manner.
Preferably, the sum of the number of the second supporting plates 7 and the first supporting plates 6 is equal to the number of the driving columns 20, the second supporting plates 7 and the first supporting plates 6 are arranged in a one-to-one correspondence with the driving columns 20, and the outer ends of the driving columns 20 are fixedly connected with the inner walls of the corresponding second supporting plates 7 or the corresponding first supporting plates 6.
Preferably, the first supporting plate 6 and the second supporting plate 7 are both arranged in an arc structure.
Preferably, the expansion drive comprises a drive column 3 and a drive sleeve 5, the drive sleeve 5 is sleeved on the drive column 3 in a threaded manner, the near end of the drive column 3 rotates to penetrate through a bearing block 24 and the conveying pipe 1 to extend to the inside of the conveying pipe 1 and is coaxially connected with a first gear 16, the first gear 16 is meshed with a second gear 15, the inner wall of the far end of the conveying pipe 1 is fixedly connected with a motor 11, the output end of the motor 11 is sleeved with the second gear 15 meshed with the first gear 16 in a transmission manner, and the near end of the drive column 3 is limited by a medicine conveying pipe 17 and is rotatably connected with the medicine conveying pipe.
Preferably, it has a plurality of second guide slots 501 to be the equidistant annular of having seted up on the circumference outer wall of drive cover 5, second guide slot 501 and the setting of 6 one-to-one of first backup pad, it has first slider 9 all to slide spacing in the second guide slot 501, all install spring 12 between second guide slot 501 and the corresponding first slider 9, equal fixed mounting has first connecting block 4 on the inner wall of first backup pad 6, it has first drive plate 8 all to articulate between corresponding first slider 9 and the first connecting block 4.
Preferably, a first guide groove 502 is formed in the middle of each of two adjacent second guide grooves 501, the first guide grooves 502 and the second support plates 7 are arranged in a one-to-one correspondence manner, the first guide grooves 502 are limited by the second sliding blocks 10 in a sliding manner, the inner walls of the second support plates 7 are fixedly connected with the second connecting blocks 14, and the second drive plates 13 are hinged between the corresponding second sliding blocks 10 and the second connecting blocks 14.
Preferably, the drive column 3 is the hollow structure setting, and the distal end fixedly connected with of drive column 3 goes out pencil 23, goes out to install check valve 25 on the pencil 23, installs in the conveyer pipe 1 and send pencil 17, send pencil 17 to be linked together with drive column 3.
Preferably, the guide plate 22 is fixedly mounted on the distal end portions of the first support plate 6 and the second support plate 7, and the guide plate 22 is arranged in a fan-shaped structure.
Preferably, an air pipe 19 is installed in the conveying pipe 1, a plurality of connecting hoses 18 are fixedly connected to the far end of the air pipe 19, and the other ends of the connecting hoses 18 are communicated with the inner cavity of the annular air bag 21.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
1. according to the invention, after the annular air bag sleeved with the covered stent is sent to a designated position in a patient body, the covered stent is spread by using the first supporting plate, in the process, the blood vessel of the patient can be kept in a smooth state all the time, and the condition of the patient is prevented from being aggravated by blocking the blood vessel of the patient.
2. In the invention, the second supporting plate can enable the covered stent to be better attached to the blood vessel of a patient, in addition, a certain time difference exists between the expansion of the first supporting plate and the expansion of the second supporting plate, after the first supporting plate is expanded, the blood vessel condition of the patient can be further judged, the risk that the blood vessel of the patient is fragile, broken and bleeding is reduced, the blood vessel of the patient can be preliminarily adapted to the covered stent, and the covered stent can be completely expanded to expand the blood vessel of the patient subsequently.
3. In the invention, the annular air bag can not completely block the blood vessel of a patient, and simultaneously, the film-coated stent is further ensured to be completely adhered to the inner wall of the blood vessel, so that the film-coated stent can better play a role, in addition, the medicine can be directly sent to the affected part of the patient in the expansion operation, so as to achieve the purposes of treating thrombus and the like, and the treatment effect is effectively improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a cardiovascular dilator disclosed in the preferred embodiment of the present application;
FIG. 2 is a schematic view of the overall structure of the cardiovascular dilator disclosed in the preferred embodiment of the present application when dilating a blood vessel;
FIG. 3 is a schematic bottom view of the overall structure of the cardiovascular dilator disclosed in the preferred embodiment of the present application when dilating a blood vessel;
FIG. 4 is a schematic cross-sectional view of the structure of the delivery tube in the cardiovascular dilator disclosed in the preferred embodiment of the present application;
FIG. 5 is a schematic structural view of a driving post and a driving sleeve of the cardiovascular dilator according to the preferred embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of the structure of the driving post in the cardiovascular dilator disclosed in the preferred embodiment of the present application;
reference numbers in the figures:
1. a delivery pipe; 2. a limiting shell; 3. a drive column; 4. a first connection block; 5. a driving sleeve; 6. a first support plate; 7. a second support plate; 8. a first drive plate; 9. a first slider; 10. a second slider; 11. an electric motor; 12. a spring; 13. a second drive plate; 14. a second connecting block; 15. a second gear; 16. a first gear; 17. a medicine delivery pipe; 18. a connecting hose; 19. a gas delivery pipe; 20. driving the column; 21. an annular air bag; 22. a guide plate; 23. a medicine outlet pipe; 24. a bearing block; 25. a one-way valve;
201. a limiting groove; 501. a second guide groove; 502. a first guide groove.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiments and the directional terms described below with reference to the drawings are exemplary and intended to be used in the explanation of the invention, and should not be construed as limiting the invention.
In a broad embodiment of the invention, the cardiovascular dilator comprises a conveying pipe 1 and a dilation drive, and is characterized in that a bearing block 24 is fixedly installed at the center of the far end face of the conveying pipe 1, a plurality of limiting shells 2 are annularly and equidistantly distributed on the outer wall of the circumference of the bearing block 24, limiting grooves 201 are formed in the limiting shells 2, driving columns 20 are in limited sliding in the limiting grooves 201, the outer ends of the driving columns 20 are connected with distraction assemblies, and annular air bags 21 are fixedly connected with the outer walls of the distraction assemblies; the strutting assembly comprises a primary strutting assembly and a secondary strutting assembly, and the primary strutting assembly and the secondary strutting assembly sequentially expand outwards under the driving of expansion driving.
Preferably, the primary distraction assembly comprises a plurality of first supporting plates 6, the secondary distraction assembly comprises a plurality of second supporting plates 7, and the plurality of first supporting plates 6 and the plurality of second supporting plates 7 are arranged in a staggered manner.
Preferably, the sum of the number of the second supporting plates 7 and the first supporting plates 6 is equal to the number of the driving columns 20, the second supporting plates 7 and the first supporting plates 6 are arranged in a one-to-one correspondence with the driving columns 20, and the outer ends of the driving columns 20 are fixedly connected with the inner walls of the corresponding second supporting plates 7 or the corresponding first supporting plates 6.
Preferably, the first supporting plate 6 and the second supporting plate 7 are both arranged in an arc structure.
Preferably, the expansion drive comprises a drive column 3 and a drive sleeve 5, the drive sleeve 5 is sleeved on the drive column 3 in a threaded manner, the near end of the drive column 3 rotates to penetrate through a bearing block 24 and the conveying pipe 1 to extend to the inside of the conveying pipe 1 and is coaxially connected with a first gear 16, the first gear 16 is meshed with a second gear 15, the inner wall of the far end of the conveying pipe 1 is fixedly connected with a motor 11, the output end of the motor 11 is sleeved with the second gear 15 meshed with the first gear 16 in a transmission manner, and the near end of the drive column 3 is limited by a medicine conveying pipe 17 and is rotatably connected with the medicine conveying pipe.
Preferably, it has a plurality of second guide slots 501 to be the equidistant annular of having seted up on the circumference outer wall of drive cover 5, second guide slot 501 and the setting of 6 one-to-one of first backup pad, it has first slider 9 all to slide spacing in the second guide slot 501, all install spring 12 between second guide slot 501 and the corresponding first slider 9, equal fixed mounting has first connecting block 4 on the inner wall of first backup pad 6, it has first drive plate 8 all to articulate between corresponding first slider 9 and the first connecting block 4.
Preferably, a first guide groove 502 is formed in the middle of each of two adjacent second guide grooves 501, the first guide grooves 502 are arranged in one-to-one correspondence with the second support plate 7, the second sliding blocks 10 are slidably limited in the first guide grooves 502, the second connection blocks 14 are fixedly connected to the inner wall of the second support plate 7, and a second drive plate 13 is hinged between each of the corresponding second sliding blocks 10 and the corresponding second connection blocks 14.
Preferably, the drive column 3 is hollow structure setting, and the distal end fixedly connected with of drive column 3 goes out pencil 23, goes out to install check valve 25 on pencil 23, installs in the conveyer pipe 1 and send pencil 17, send pencil 17 and drive column 3 to be linked together.
Preferably, the guide plate 22 is fixedly mounted on the distal end portions of the first support plate 6 and the second support plate 7, and the guide plate 22 is arranged in a fan-shaped structure.
Preferably, an air pipe 19 is installed in the conveying pipe 1, a plurality of connecting hoses 18 are fixedly connected to the far ends of the air pipe 19, and the other ends of the connecting hoses 18 are communicated with the inner cavity of the annular air bag 21.
The present invention will be described in further detail below with reference to the accompanying drawings, which illustrate preferred embodiments of the present invention.
Referring to fig. 1-6, a cardiovascular dilator comprises a conveying pipe 1, an expanding driver and a plurality of driving pillars 20 are installed at the distal end of the conveying pipe 1, wherein the outer ends of some of the driving pillars 20 are fixedly installed with first supporting plates 6, the first supporting plates 6 are arranged in an arc structure, and the expanding driver can drive the first supporting plates 6 and the driving pillars 20 connected thereto to move synchronously along the radial direction of the conveying pipe 1.
In the embodiment, the medical staff sleeves the covered stent outside the annular air bag 21 and sends the covered stent to a designated position inside the blood vessel of the patient, and under the action of the expansion drive, part of the driving posts 20 drive the first supporting plate 6 to synchronously expand outwards, so that the covered stent is expanded to be contacted with the blood vessel of the patient, and the blood vessel of the patient is expanded. In the process, blood in the blood vessel of the patient can keep flowing state all the time, so that the condition of the patient is prevented from being aggravated by blocking the blood vessel of the patient.
Specifically, the expansion drive comprises a driving mechanism, a driving sleeve 5 arranged on one side of the conveying pipe 1 and a bearing block 24 fixedly arranged at the center of the far end face of the conveying pipe 1, a plurality of limiting shells 2 which are in one-to-one correspondence with the driving columns 20 are fixedly arranged on the outer circumferential wall of the bearing block 24 at equal intervals in an annular shape, limiting grooves 201 are formed in the limiting shells 2, and the driving columns 20 are limited by the corresponding limiting grooves 201 and are connected with the limiting grooves in a sliding manner;
the circumference outer wall that drives cover 5 is the annular equidistant first slider 9 of installing a plurality of and first backup pad 6 corresponding, and equal fixed mounting has first connecting block 4 on the inner wall of first backup pad 6, all articulates between corresponding first slider 9 and the first connecting block 4 to have first drive plate 8, and drive mechanism can drive and drive cover 5 and be rectilinear movement.
In this embodiment, under the action of the driving mechanism, the driving sleeve 5 drives the first slider 9 to move to one side, and under the connecting action of the first driving plate 8, the plurality of first supporting plates 6 move synchronously along the radial direction of the conveying pipe 1.
Further, drive mechanism includes slewing mechanism and drive post 3, drives cover 5 and 3 threaded connection of drive post, and slewing mechanism can drive post 3 and rotate, and wherein, the near-end of drive post 3 rotates and passes the inside that bearing block 24 and conveyer pipe 1 extend to conveyer pipe 1.
In this embodiment, under the action of the rotating mechanism, the driving post 3 rotates, and the driving sleeve 5 is driven to move linearly under the limit of the driving post 20 and the limit groove 201 due to the threaded connection between the driving sleeve 5 and the driving post 3.
Still further, the secondary subassembly that struts is still installed to the distal end of conveyer pipe 1, and the secondary struts the subassembly and includes actuating mechanism and a plurality of and the crisscross second backup pad 7 of arranging each other of first backup pad 6, and second backup pad 7 all is connected fixedly with corresponding drive post 20, and second backup pad 7 is the arc structure setting, and actuating mechanism can drive second backup pad 7 along conveyer pipe 1 radial synchronous motion.
It should be noted that the sum of the numbers of the second supporting plate 7 and the first supporting plate 6 is equal to the number of the driving posts 20, and the second supporting plate 7 and the first supporting plate 6 are respectively connected with the driving posts 20 in a one-to-one correspondence manner.
In this embodiment, under the action of the driving mechanism, the first supporting plate 6 is firstly unfolded, the second supporting plate 7 is unfolded at the back, and the second supporting plate 7 realizes the further expansion of the blood vessel of the patient; both have certain time difference when expanding, and medical personnel can carry out further judgement to patient's vascular situation after 6 expandes of first backup pad, reduce patient and have the vascular fragile and risk that breaks and bleed, also can let patient's blood vessel simultaneously tentatively adapt to the tectorial membrane support, be convenient for follow-up strut the tectorial membrane support completely with expansion patient's blood vessel.
Furthermore, the driving mechanism comprises a plurality of first guide grooves 502 and a plurality of second connecting blocks 14 which are in one-to-one correspondence with the first guide grooves 502, the first guide grooves 502 are annularly and equidistantly arranged on the circumferential outer wall of the driving sleeve 5, the second connecting blocks 14 are in one-to-one correspondence with the second supporting plates 7, and the second connecting blocks 14 are all fixedly connected to the inner walls of the corresponding second supporting plates 7; the first guide grooves 502 are connected with second sliders 10 in a sliding manner, and second driving plates 13 are hinged between the corresponding second sliders 10 and the second connecting block 14.
When not expanded, the second slide block 10 and the first slide block 9 are respectively positioned at the proximal end positions of the first guide groove 502 and the second guide groove 501.
In this embodiment, when the driving sleeve 5 moves, when the second slider 10 abuts against the inner wall of the distal end of the first guide groove 502, the second slider 10 starts to move along with the driving sleeve 5, and the second support plate 7 starts to expand outward under the connecting action of the second driving plate 13.
It is worth to say that, a plurality of second guide grooves 501 corresponding to the first slide blocks 9 one by one are further formed on the circumferential outer wall of the driving sleeve 5, the first slide blocks 9 are limited by the corresponding second guide grooves 501 and are connected with the corresponding second guide grooves in a sliding manner, and a plurality of springs 12 are fixedly installed between the second guide grooves 501 and the corresponding first slide blocks 9.
In the embodiment, when the sleeve 5 is driven to move, the first supporting plate 6 is gradually and synchronously expanded outwards, and at the moment, the spring 12 is used for force transmission and can relieve the effect of the first driving plate 8 on the first supporting plate 6, so that the buffer between the covered stent and the inner wall of the blood vessel is realized, and irreparable damage to the blood vessel wall caused by overlarge force is avoided; when the first supporting plate 6 moves to the outermost side, the first sliding block 9 further compresses the spring 12 to change the relative position of the spring and the driving sleeve 5, and the situation of jamming is effectively avoided.
It is worth noting that the distal end of conveyer pipe 1 still is equipped with annular gasbag 21, and annular gasbag 21 inner wall is fixed with the outer wall connection of first backup pad 6 and second backup pad 7, installs gas-supply pipe 19 in the conveyer pipe 1, and the distal end fixedly connected with a plurality of coupling hose 18 of gas-supply pipe 19, the coupling hose 18 other end all communicates with annular gasbag 21 inner chamber.
In this embodiment, after the first support plate 6 and the second support plate 7 are completely unfolded, the gas pipe 19 supplies gas to the annular gas bag 21, so that the full attachment of the stent graft to the inner wall of the blood vessel is further ensured on the premise of incompletely blocking the blood vessel of the patient, and the better function of the stent graft is ensured.
In addition, the drive column 3 is hollow structure setting, and the distal end fixedly connected with of drive column 3 goes out pencil 23, goes out to install check valve 25 on pencil 23, installs in the conveyer pipe 1 and send pencil 17, send pencil 17 and drive column 3 to be linked together. In the embodiment, the medical staff can connect the medicine feeding pipe 17 with the external medicine supply equipment, so that the medicine is directly fed into the blood vessel of the patient, the purpose of treating thrombus and the like is achieved, and the treatment effect is effectively improved. The one-way valve 25 is arranged to prevent the medicine outlet tube 23 from being blocked.
Besides, the rotating mechanism comprises a motor 11 fixedly arranged on the inner wall of the far end of the conveying pipe 1 and a first gear 16 sleeved on the driving column 3, the end part of the output end of the motor 11 is fixedly connected with a second gear 15, the first gear 16 is meshed with the second gear 15, and the near end of the driving column 3 is limited by a medicine conveying pipe 17 and is rotatably connected with the medicine conveying pipe.
In the present embodiment, the second gear 15 is rotated by the motor 11, and the first gear 16 is engaged with the second gear 15, so that the second gear 15 rotates the driving column 3.
Besides, the end parts of the first supporting plate 6 and the second supporting plate 7 are fixedly provided with guide plates 22, and the guide plates 22 are arranged in a fan-shaped structure.
In this embodiment, all the guide plates 22 are combined to form a tapered structure, which is convenient for medical personnel to feed the delivery tube 1 into the blood vessel of a patient.
The working principle is as follows: when the device is needed, firstly, the covered stent is sleeved outside the annular air bag 21, the air delivery pipe 19 is connected with air supply equipment, the medicine delivery pipe 17 is connected with external medicine supply equipment, and then the covered stent is delivered to a specified position in a blood vessel;
the motor 11 is started, the second gear 15 drives the driving post 3 to rotate, at the moment, under the action of the second driving plate 13 and the first driving plate, the driving post 3 only can drive the driving sleeve 5 to do axial movement, under the action of the spring 12, the driving sleeve 5 drives the first sliding block 9 to start moving, and the first supporting plates 6 start to synchronously move outwards along the limiting groove 201, so that the covered stent is initially unfolded;
along with the movement of the driving sleeve 5, when the second slider 10 abuts against the far-end inner wall of the first guide groove 502, the second slider 10 starts to move along with the driving sleeve 5, and the second supporting plate 7 starts to expand outwards under the connecting action of the second driving plate 13;
in this process, under the action of the spring 12, when the plurality of first supporting plates 6 move to the outermost side, the first sliding block 9 starts to move reversely; after the vessel wall slowly adapts to the support of the first support plate 6, the second drive plate 13 moves to the outermost side and comes into contact with the vessel wall.
Then, the air pipe 19 supplies air to the annular air bag 21, and the covered stent is further ensured to be completely attached to the inner wall of the blood vessel while the blood vessel of the patient is not completely blocked. Thus, the operation of expanding the blood vessel of the patient can be completed.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A cardiovascular dilator comprises a conveying pipe (1) and a dilation drive, and is characterized in that a bearing block (24) is fixedly installed at the center of the far end face of the conveying pipe (1), a plurality of limiting shells (2) are annularly and equidistantly distributed on the outer wall of the circumference of the bearing block (24), limiting grooves (201) are formed in the limiting shells (2), driving columns (20) are in limited sliding in the limiting grooves (201), the outer ends of the driving columns (20) are connected with distraction assemblies, and the outer walls of the distraction assemblies are fixedly connected with annular air bags (21); the strutting assembly comprises a primary strutting assembly and a secondary strutting assembly, and the primary strutting assembly and the secondary strutting assembly sequentially expand outwards under the driving of expansion driving.
2. A cardiovascular dilator according to claim 1, wherein the primary distraction assembly comprises a plurality of first support plates (6), the secondary distraction assembly comprises a plurality of second support plates (7), and the plurality of first support plates (6) and the plurality of second support plates (7) are staggered.
3. A cardiovascular dilator according to claim 2, wherein the sum of the number of the second supporting plate (7) and the first supporting plate (6) is equal to the number of the driving posts (20), the second supporting plate (7) and the first supporting plate (6) are disposed in one-to-one correspondence with the driving posts (20), and the outer ends of the driving posts (20) are all fixedly connected with the inner wall of the corresponding second supporting plate (7) or the corresponding first supporting plate (6).
4. A cardiovascular dilator according to claim 2, characterised in that the first support plate (6) and the second support plate (7) are arranged in an arc-shaped configuration.
5. A cardiovascular dilator according to claim 2, wherein the dilating drive comprises a driving post (3) and a driving sleeve (5), the driving sleeve (5) is threaded onto the driving post (3), the proximal end of the driving post (3) rotates to penetrate through a bearing block (24) and the delivery tube (1) to extend into the delivery tube (1) and is coaxially connected with a first gear (16), the first gear (16) is engaged with a second gear (15), the inner wall of the distal end of the delivery tube (1) is fixedly connected with a motor (11), the output end of the motor (11) is engaged with the second gear (15) which is engaged with the first gear (16), and the proximal end of the driving post (3) is limited by and is rotatably connected with a drug delivery tube (17).
6. The cardiovascular dilator according to claim 5, wherein a plurality of second guide grooves (501) are formed in the circumferential outer wall of the driving sleeve (5) at equal intervals, the second guide grooves (501) are arranged in one-to-one correspondence with the first support plates (6), first sliding blocks (9) are positioned in the second guide grooves (501) in a sliding manner, springs (12) are installed between the second guide grooves (501) and the corresponding first sliding blocks (9), first connecting blocks (4) are fixedly installed on the inner wall of the first support plates (6), and first driving plates (8) are hinged between the corresponding first sliding blocks (9) and the first connecting blocks (4).
7. The cardiovascular dilator according to claim 6, wherein a first guide groove (502) is formed in the middle of each of two adjacent second guide grooves (501), the first guide grooves (502) and the second support plates (7) are arranged in a one-to-one correspondence manner, the first guide grooves (502) are provided with second sliding blocks (10) in a sliding and limiting manner, the inner walls of the second support plates (7) are fixedly connected with second connecting blocks (14), and a second driving plate (13) is hinged between each corresponding second sliding block (10) and each second connecting block (14).
8. A cardiovascular dilator according to any of claims 5 to 6, wherein the drive column (3) is hollow, the distal end of the drive column (3) is fixedly connected with a drug outlet tube (23), a one-way valve (25) is mounted on the drug outlet tube (23), a drug delivery tube (17) is mounted in the delivery tube (1), and the drug delivery tube (17) is communicated with the drive column (3).
9. A cardiovascular dilator according to any of claims 1-7, characterised in that the distal end portions of the first support plate (6) and the second support plate (7) are fixedly provided with guide plates (22), the guide plates (22) being arranged in a fan-shaped configuration.
10. A cardiovascular dilator according to claim 9, wherein an air duct (19) is installed in the conveying tube (1), a plurality of connecting hoses (18) are fixedly connected to the far end of the air duct (19), and the other ends of the connecting hoses (18) are communicated with the inner cavity of the annular air bag (21).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115804906A (en) * | 2022-11-14 | 2023-03-17 | 苏州心擎医疗技术有限公司 | Blood pump |
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| CN115317769B (en) | 2024-03-12 |
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