Disclosure of Invention
In view of the above, the invention aims to provide a high-precision automatic thrombus drilling device which has high precision, can effectively grasp thrombus, has a wide application range and is convenient to popularize and use.
In order to achieve the above object, the present invention provides the following technical solutions:
A high precision automated thrombus drilling device comprising: the catheter and the guide wire also comprise a driving device, a control device and a grabbing device which is arranged in the catheter and used for grabbing thrombus, wherein the driving device is provided with a movable fixing part which is used for selectively locking or loosening at least one of the catheter, the guide wire and the grabbing device, and the control device is connected with the driving device so as to control the movement of the fixing part and the movement of the driving device;
An expandable or contractible telescopic tube is arranged on the catheter so as to convey the grabbing device into a blood vessel to grab the thrombus, and the control device is connected with the telescopic tube so as to control the expansion or contraction of the telescopic tube;
at least two drill bits used for winding and stretching the thrombus are arranged on the grabbing device, so that the grabbing device directly brings the thrombus out of the blood vessel after contacting with the thrombus;
The pressure sensor is arranged in the conduit and used for detecting the air pressure of the conduit, and the pressure sensor is connected with the control device so as to transmit a pressure signal to the control device;
The control device is connected with a monitoring device for monitoring conditions in the human body so that the control device receives the monitoring data.
Preferably, two drill bits are arranged on the grabbing device, and barbs are vertically arranged on one of the two drill bits.
Preferably, three drill bits are arranged on the grabbing device, and barbs are vertically arranged on one of the three drill bits.
Preferably, four drill bits are arranged on the grabbing device, and barbs are vertically arranged on one of the four drill bits.
Preferably, the gripping device is provided with two identical drills, and the two drills are vertically provided with barbs.
Preferably, three identical drills are arranged on the grabbing device, and barbs are vertically arranged on the three drills.
Preferably, the gripping device is provided with four identical drills, and the four drills are vertically provided with barbs.
Preferably, the barbs arranged on the drill bit are horizontally arranged, and the included angle between every two adjacent barbs is 90 degrees.
Preferably, the gripping device is provided with a circular support disc for fixedly supporting the drill bit, and the drill bit and the support disc are flexible material pieces so as to avoid damaging the blood vessel.
Preferably, the drill is vertically arranged on the support disc, and the height of the drill is less than or equal to four fifths of the radius of the support disc, so as to avoid the top of the drill damaging the blood vessel.
When the high-precision automatic thrombus drilling device provided by the invention is used, the control device can monitor the conditions in the human body in real time after receiving the monitoring data of the monitoring device so as to perform corresponding control operation.
During interventional operation, the guide wire inside the catheter has the function of guiding and supporting the catheter, so that the fixing part is controlled to be locked with the guide wire via the control device, and the driving device drives the guide wire to move to make the guide wire enter the blood vessel to be treated selectively. The control device then controls the fixing part to be locked with the catheter and the grabbing device only, so that the driving device drives the catheter and the grabbing device to move, and the catheter and the grabbing device also enter the blood vessel. Then, the fixing part is controlled by the control device to be locked with the guide wire, the guide pipe and the grabbing device, so that the driving device drives the guide wire, the guide pipe and the grabbing device to move at the same time, and the fixed part can reach the designated position where thrombus is required to be grabbed.
Then, the control device controls the expansion of the telescopic tube, then, the fixing part is controlled to be locked with the grabbing device, and then, the driving device is controlled to push the grabbing device to pass through the expanded telescopic tube, so that the grabbing device is conveyed into a blood vessel to contact thrombus. At this time, the drill bit on the grabbing device can be contacted with thrombus, then the thrombus can be stretched by rotating under the driving action of the driving device, the thrombus is wound on the drill bit, then the grabbing device is driven by the driving device to withdraw, at this time, the thrombus wound on the drill bit can be rapidly and directly pulled out of a blood vessel by the drill bit, and finally the thrombus grabbing process is completed. The control device can control and regulate the pressure through the real-time air pressure feedback signal of the pressure sensor, so that the phenomenon of damaging the vessel wall in the process can be effectively avoided.
In addition, because the devices such as the guide wire and the guide pipe in the prior art are quite mature, the driving device, the control device and the grabbing device of the high-precision automatic thrombus drilling device can be connected and matched with different guide pipes and monitoring devices for use, the device has wide application range, is not limited, and can not waste the existing guide pipe resources.
In addition, when the device is used for interventional operation, the condition in a human body, the air pressure in a blood vessel and a catheter and the like can be monitored in real time without manual operation, and the processes of movement of the catheter, grabbing thrombus and the like by the grabbing device are controlled by the control device to operate, so that the high-precision automatic thrombus drilling device provided by the invention has the advantages of high precision, intellectualization and the like.
In conclusion, the high-precision automatic thrombus drilling device provided by the invention has the advantages of higher precision, capability of effectively grabbing thrombus, wide application range and no limitation.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention has the core of providing a high-precision automatic thrombus drilling device which has high precision, can effectively grasp thrombus, has wide application range and is convenient to popularize and use.
Please refer to fig. 1 to 17.
The invention provides a high-precision automatic thrombus drilling device, which comprises: the catheter 2 and the guide wire 1 further comprise a driving device, a control device 19 and a grabbing device 3 which is arranged in the catheter 2 and used for grabbing thrombus, wherein the driving device is provided with a movable fixing part which is used for selectively locking or loosening at least one of the catheter 2, the guide wire 1 and the grabbing device 3, and the control device 19 is connected with the driving device so as to control the movement of the fixing part and control the movement of the driving device; the catheter 2 is provided with an expandable or contractible telescopic tube 4 so as to convey the grabbing device 3 into a blood vessel to grab thrombus, and the control device 19 is connected with the telescopic tube 4 so as to control the expansion or contraction of the telescopic tube 4; at least two drills 20 for winding and stretching thrombus are arranged on the grabbing device 3, so that the grabbing device 3 directly brings the thrombus out of a blood vessel after contacting the thrombus; the pressure sensor 7 for detecting the air pressure of the catheter 2 is arranged in the catheter 2, and the pressure sensor 7 is connected with the control device 19 so as to transmit a pressure signal to the control device 19; the control device 19 is connected to a monitoring device for monitoring conditions in the human body, so that the control device 19 receives the monitoring data.
The driving device is provided with a movable fixing part for selectively locking or unlocking at least one of the catheter 2, the guide wire 1 and the grabbing device 3, and the control device 19 can control the movement of the fixing part, that is, the fixing part can move so that the fixing part can lock or unlock at least one of the catheter 2, the guide wire 1 and the grabbing device 3, and a component locked with the fixing part can move together with the driving device.
Namely: the control device 19 can control the movement of the fixing part and the movement of the driving device, so that at least one of the catheter 2, the guide wire 1 and the grabbing device 3 can be selectively driven to move. However, the specific movement of the catheter 2, the guide wire 1 and the grasping device 3 is determined according to various signal data received by the control device 19, so that the device can complete interventional operation accurately and intelligently.
It should be noted that the monitoring device may be a CT scanner, so that the condition in the human body may be monitored in real time, and the monitoring data may be transmitted to the control device. The pressure sensor 7 is disposed in the catheter 2, which may mean that the pressure sensor 7 for detecting the air pressure of the catheter 2 is disposed in the sheath 6 of the catheter 2, so as to avoid damaging the vessel wall due to excessive force during the operation of the grasping device 3 when grasping thrombus.
Furthermore, a liquid inlet 8 for delivering liquid may be provided in the sheath 6, wherein the liquid inlet 8 needs to communicate with a delivery tube 5 in the catheter 2, which is dedicated for delivering a drug or contrast agent, in order to achieve liquid delivery. The liquid delivered may include: contrast agent, targeted drugs, etc., and therefore, contrast agent may be first introduced into the fluid input 8 so that the contrast agent enters the blood vessel through the delivery tube 5 to better image the complex conditions within the blood vessel, which will facilitate subsequent control operations.
In addition, the specific arrangement of the driving device, the control device 19, the gripping device 3, the pressure sensor 7, the monitoring device, etc. may be determined according to the actual situation and the actual requirement during the actual use, but it is necessary to ensure that the above connection relationship and specific functions can be achieved.
When the high-precision automatic thrombus drilling device provided by the invention is used, the control device 19 can monitor the conditions in the human body in real time after receiving the monitoring data of the monitoring device so as to perform corresponding control operation.
During interventional operation, since the guide wire 1 arranged in the catheter 2 has the function of guiding and supporting the catheter 2, the fixing part is controlled by the control device 19 to be locked with the guide wire 1, so that the driving device only drives the guide wire 1 to move, and the guide wire 1 selectively enters the blood vessel to be treated. Subsequently, the fixing part is controlled by the control device 19 to be locked only with the catheter 2 and the gripping device 3, so that the driving device brings the catheter 2 and the gripping device 3 into motion, so that the catheter 2 and the gripping device 3 also enter the blood vessel. Then, the fixing part is controlled to be locked with the guide wire 1, the catheter 2 and the grabbing device 3 through the control device 19, so that the driving device drives the guide wire 1, the catheter 2 and the grabbing device 3 to move at the same time, and the fixed part can reach the designated position where thrombus needs to be grabbed.
Subsequently, the expansion of the telescopic tube 4 is controlled by the control device 19, after which the fixation part is controlled to be locked only with the gripping device 3, and subsequently the driving device is controlled to push the gripping device 3 through the expanded telescopic tube 4, so that the gripping device 3 is delivered into the blood vessel to contact the thrombus. At this time, the drill bit 20 on the grabbing device 3 is contacted with thrombus, and then rotates under the driving action of the driving device, so that the thrombus can be stretched, and wound on the drill bit 20, and then the grabbing device 3 is driven by the driving device to withdraw, at this time, the thrombus wound on the drill bit 20 can be rapidly and directly pulled out of a blood vessel by the drill bit 20, and finally, the thrombus grabbing process is completed. Since the control device 19 can control the regulating pressure by the real-time air pressure feedback signal of the pressure sensor 7, the phenomenon of damaging the vessel wall in the process can be effectively avoided.
Preferably, the driving device may include: the servo motor 18 for connection with the control device 19, the rotary shaft 15 for connection with the servo motor 18, the connecting shaft 14 for connection with the rotary shaft 15, the connecting valve 13 for connection with the connecting shaft 14, the connecting valve 13 being provided with a fixing portion.
The control device 19 can thus perform the pushing in, pulling back, twisting of the catheter 2, the guide wire 1, the grasping device 3 by controlling the forward and reverse rotation of the servo motor 18, the locking and releasing of the fixing part, etc.
Alternatively, the rotary shaft 15 is connected with the servo motor 18 through a belt or a gear so that the rotary shaft 15 can be rotated by the driving of the servo motor 18, the connecting shaft 14 is rotated synchronously with the rotary shaft 15, and the connecting valve 13 provided with a fixing portion is connected with the connecting shaft 14 to be rotated synchronously. The reason why the rotary shaft 15 is connected to the connection valve 13 via the connection shaft 14 is to avoid the phenomenon that the rotary shaft 15 is unstable in rotation and even the rotary shaft 15 is broken because the rotary shaft 15 needs to be excessively long when the rotary shaft 15 is directly connected to the connection valve 13. Therefore, the rotation shaft 15 is connected with the connecting valve 13 through the connecting shaft 14, which can avoid the occurrence of the above phenomenon, thereby improving the service life of the device.
In addition, the ball 17 and the shaft sleeve 16 can be arranged on the rotating shaft 15, so that lubrication and protection can be provided for the rotation of the rotating shaft 15, the abrasion phenomenon of the rotating shaft 15 can be avoided, the rotating shaft 15 can be well supported and positioned, and finally the service life and the rotation effect of the rotating shaft 15 can be improved.
It should be further noted that the connecting valve 13 connected to the connecting shaft 14 is provided with a fixing portion, and the control device 19 can control the movement of the fixing portion so that the connecting valve 13 can be selectively locked to or unlocked from the guide wire 1, the catheter 2, and the grasping device 3.
Preferably, the fixing portion may include: the first movable clamping element for clamping the catheter handle 10, the second movable clamping element for clamping the guide wire handle 11, and the third movable clamping element for clamping the drill handle 12 are all connected to the control device 19. Therefore, after the first clamping member or the second clamping member or the third clamping member receives the operation instruction of the control device 19, the catheter handle 10 or the guide wire handle 11 or the drill handle 12 can be selectively clamped, so that the catheter handle 10, the guide wire handle 11 and the drill handle 12 are selectively and fixedly connected with the connecting valve 13, and the driving device can selectively drive the catheter 2, the guide wire 1 and the grabbing device 3 to move. Wherein the catheter handle 10 may be used to adjust the movement of the catheter 2, the guidewire handle 11 may be used to adjust the movement of the guidewire 1 and the drill handle 12 may be used to adjust the movement of the grasping device 3.
It should be noted that, the movable first clamping member herein means that the first clamping member corresponds to the position of the catheter handle 10, and the first clamping member may move relative to the catheter handle 10, so that the first clamping member may move to a position where it is clamped with the catheter handle 10, and then clamp the catheter handle 10. The movable second clamping piece is that the second clamping piece corresponds to the position of the guide wire handle 11, and the second clamping piece can move relative to the guide wire handle 11 so that the second clamping piece can move to the position clamped with the guide wire handle 11 and then clamp the guide wire handle 11. The movable third clamping member corresponds to the position of the drill bit 12, and can move relative to the drill bit 12, so that the third clamping member can move to a position clamped with the drill bit 12, and then clamp the drill bit 12.
Accordingly, the specific positions, shapes, and sizes of the first clamping member, the second clamping member, and the third clamping member need to be set according to the specific conditions of the catheter handle 10, the guidewire handle 11, and the drill handle 12. Also, since the first, second and third clamping members need to fasten the catheter handle 10, the guide wire handle 11 and the drill handle 12, the first, second and third clamping members should have a certain strength and wear resistance so that they can perform a clamping function better. Therefore, the positions, shapes, sizes, materials and the like of the first clamping piece, the second clamping piece and the third clamping piece can be determined according to actual conditions and actual demands in the actual application process.
Furthermore, the first clamping element, the second clamping element and the third clamping element mentioned here are provided only for distinguishing between the different positions and not for distinguishing in sequence.
In addition, because the devices such as the guide wire 1, the guide tube 2 and the like in the prior art are quite mature, the driving device, the control device 19 and the grabbing device 3 of the high-precision automatic thrombus drilling device can be connected and matched with different guide tubes 2 and monitoring devices for use, the device has wide application range, is not limited, and can not waste the resources of the existing guide tube 2.
In addition, when the device is used for interventional operation, the condition in a human body, the air pressure in a blood vessel and a catheter and the like can be monitored in real time without manual operation, and the processes of the motion of the catheter 2, the grabbing of thrombus by the grabbing device 3 and the like are controlled and operated by the control device 19, so the high-precision automatic thrombus drilling device provided by the invention has the advantages of high precision, intellectualization and the like.
In conclusion, the high-precision automatic thrombus drilling device provided by the invention has the advantages of higher precision, capability of effectively grabbing thrombus, wide application range and no limitation.
On the basis of the high-precision automatic thrombus drilling device, preferably, two drill bits 20 are arranged on the grabbing device 3, one of the two drill bits 20 is vertically provided with barbs 21, that is, the grabbing device 3 is provided with two drill bits 20, one drill bit 20 is vertically provided with barbs 21, and the other drill bit 20 is not provided with barbs 21. As shown in fig. 3 and 4.
Preferably, three drills 20 may be provided on the gripping device 3, one of the three drills 20 being provided with barbs 21 vertically. It means that three drill bits 20 are arranged on the grabbing device 3, barbs 21 are vertically arranged on one drill bit 20, and barbs 21 are not arranged on the other two drill bits 20. As shown in fig. 5 and 6.
Preferably, four drills 20 may be further provided on the gripping device 3, and one of the four drills 20 is vertically provided with barbs 21. It means that four drills 20 are arranged on the grabbing device 3, barbs 21 are vertically arranged on one drill 20, and barbs 21 are not arranged on the other three drills 20. As shown in fig. 7 and 8.
The barbs 21 may be used to wind up the stretched thrombus or to cut off the crushed thrombus. Two or three or four drills 20 are provided on the gripping device 3 and only one of the drills 20 is provided with barbs 21, i.e. fewer barbs 21. Therefore, the stretching force when the grabbing device 3 winds and stretches the thrombus is larger, and the drill bit 20 is more beneficial to winding and stretching the thrombus in the rotating process, and finally the thrombus is directly pulled out of the blood vessel. Wherein the tensile force of the gripping means 3 provided with four drill bits 20 is greater than the tensile force of the gripping means 3 provided with three or two drill bits 20.
Therefore, the number, shape, material, position and the like of the drill bit 20 and the barb 21 can be determined according to the actual situation and the actual requirement in the actual application process.
On the basis of the high-precision automatic thrombus drilling device, preferably, two identical drill bits 20 are arranged on the grabbing device 3, and barbs 21 are vertically arranged on the two drill bits 20. As shown in fig. 9 and 10.
Preferably, three identical drills 20 may be provided on the gripping device 3, and barbs 21 are provided vertically on each of the three drills 20. As shown in fig. 11 and 12.
Preferably, four identical drills 20 may be provided on the gripping device 3, and barbs 21 are provided vertically on each of the four drills 20. As shown in fig. 13 and 14.
It should be noted that two or three or four drills 20 are provided on the gripping device 3, and barbs 21 are provided on each drill 20, that is, there are more barbs 21. Therefore, the stretching force and the cutting force are large when the grabbing device 3 winds the stretched thrombus, so that the barbs 21 vertically arranged on the drill bit 20 can be well wound to stretch the thrombus and cut off the crushed thrombus in the rotating process of the drill bit 20. Wherein the tensile force and the cutting force of the gripping means 3 provided with four drill bits 20 are larger than those of the gripping means 3 provided with three or two drill bits 20.
Thus, the barbs 21 may be provided as titanium alloy barbs 21 having sharp corners to facilitate better severing of the crushed thrombus. Of course, the barb 21 may be made of flexible material or stainless steel material, but preferably, the barb 21 may be made of titanium alloy barb 21 with sharp corners, and the titanium alloy material has the advantages of high strength, good mechanical properties, good toughness and corrosion resistance, etc., so as to avoid deformation of the barb 21 during use. And, be equipped with the closed angle at the tip of barb 21, will be favorable to barb 21 to cut off crushing thrombus in the rotation in-process.
The barbs 21 are provided perpendicular to the drill bit 20, so that the cutting force of the barbs 21 for cutting the crushed thrombus is increased when the drill bit 20 and the barbs 21 are rotated. Of course, the barbs 21 may be inclined to the drill bit 20, but the inclined barbs 21 may be less likely to disperse during rotation in the effort to cut the crushed thrombus.
The inside of the sheath 6 may be provided with a vacuum tube device 9 for discharging the crushed thrombus. In addition, the liquid delivered by the liquid delivering device 8 may also include a thrombus solvent, and therefore, by delivering the thrombus solvent to the liquid delivering device 8, the thrombus solvent can be made to enter the blood vessel through the delivery tube 5 to effectively dissolve and disperse the smaller thrombus, and then the dispersed thrombus can be delivered directly to the outside of the body more easily through the vacuum tube device 9. When larger thrombus is grabbed, the grabbing device 3 can be used for winding, stretching or cutting and crushing fibers in the thrombus, so that the grabbing device 3 can directly pull the thrombus out of a blood vessel or reduce the resistance of the vacuum tube device 9 for sucking the thrombus, and the thrombus can be output more easily.
Thus, the vacuum tube means 9 can be in communication with the delivery tube 5 and connected to the control means 19, whereby the air pressure between the catheter 2, the blood vessel and the delivery tube 5 can be balanced by the vacuum tube means 9 for better achieving the infusion of targeted drugs, thrombolytic agents, contrast agents etc. and also for the delivery of thrombus within the blood vessel by the vacuum tube means 9.
For example, after receiving the air pressure signal fed back by the pressure sensor 7, the control device 19 may control the vacuum tube device 9 to push the hydraulic pressure in the delivery tube 5 forward if the negative pressure appears in the delivery tube 5, so as to avoid the phenomenon of liquid back suction, thereby better inputting the targeted drug, the thrombolytic agent, the contrast agent and the like. And the control device 19 receives the air pressure signal fed back by the pressure sensor 7, if the positive pressure of the delivery pipe 5 is displayed, the control device 19 can control the vacuum pipe device 9 to suck out thrombus after dissolution or crushing in blood vessels.
On the basis of the above-mentioned high-precision automatic thrombus drilling device, it is preferable that the barbs 21 provided on the drill bit 20 are horizontally arranged, and the included angle between adjacent barbs 21 is 90 °.
It should be noted that, the barbs 21 arranged on the drill bit 20 are arranged horizontally, and the included angle between the adjacent barbs 21 is 90 degrees, so that the cutting force of the barbs 21 to thrombus in the rotating process can be effectively improved, and the barbs 21 can cut off and crush thrombus rapidly and accurately. In addition, this arrangement is also advantageous in that the tensile force of the barbs 21 for winding and stretching the thrombus during rotation can be increased, and the winding area of the thrombus can be increased to more sufficiently wind and stretch the thrombus.
Of course, the specific arrangement positions, number, size, etc. of the barbs 21 may be determined according to the actual situation and actual requirements during the actual application process.
On the basis of the high-precision automatic thrombus drilling device, preferably, the grabbing device 3 is provided with a round supporting disc 22 for fixedly supporting the drill bit 20, and the drill bit 20 and the supporting disc 22 are flexible material pieces so as to avoid damaging blood vessels.
It should be noted that the gripping device 3 may include: the grabbing catheter 24 nested in the catheter 2, the connecting rod 23 arranged in the grabbing catheter 24, the drill bit handle 12 connected with one end of the connecting rod 23, the supporting disc 22 connected with the other end of the connecting rod 23, the drill bit 20 arranged on the supporting disc 22, the barb 21 arranged on the drill bit 20, and the drill bit handle 12 and the fixing part are locked or unlocked so that the grabbing device 3 is in an operating state or a non-operating state, and the grabbing catheter 24 is used for accommodating the supporting disc 22 in the non-operating state.
Thus, the control device 19 can control the locking or unlocking of the fixing part and the drill handle 12, when the drill handle 12 is locked with the fixing part, the drill handle 12 moves together with the driving device, so that the grabbing device 3 can move forward, backward, forward and backward along with the driving device, and the operations of winding the drill 20 around the stretching thrombus or cutting the crushed thrombus by the barbs 21 are realized.
After the driving device drives the guide wire 1, the catheter 2 and the grabbing device 3 to reach the designated position where thrombus needs to be extracted, the telescopic tube 4 can be controlled to expand by the control device 19, then the fixing part is controlled to be locked with the drill handle 12 only, and then the driving device is controlled to push the drill handle 12 to advance, so that the support disc 22 at the other end of the connecting rod, the drill bit 20, the barbs 21 and the like on the support disc 22 are pushed out of the grabbing catheter 24 and reach the inside of a blood vessel to contact thrombus, and the larger thrombus can be elongated in the advancing process of the drill bit 20. Then, the driving means is controlled by the control means 19 to drive the drill handle 12 to rotate, so that the connecting rod and the supporting disc 22, the drill 20, the barbs 21 and the like are rotated, and at this time, the drill 20 and the barbs 21 can wind and stretch the thrombus or cut and crush the thrombus in the rotating process, so that the larger and longer thrombus can be effectively grasped.
Since the control device 19 can control the pressure in the regulating tube through the real-time air pressure feedback signal of the pressure sensor 7, the phenomenon of damaging the vessel wall in the process can be effectively avoided. Finally, the control device 19 controls the grabbing device 3 to directly pull out the thrombus from the blood vessel or controls the vacuum tube device 9 to output the crushed thrombus, so that the thrombus extraction process is completed.
When the thrombus extraction operation is finished, the driving device can be controlled by the control device 19 to drive the drill handle 12 to retract, so that the support disc 22 at the other end of the connecting rod, the drill bit 20, the barbs 21 and the like on the support disc 22 are retracted into the grabbing catheter 24. Then, the telescopic tube 4 is controlled to shrink by the control device 19. Then, the fixing part is controlled to be locked with the guide wire 1, the catheter 2 and the grabbing device 3, so that the driving device drives the guide wire 1, the catheter 2 and the grabbing device 3 to withdraw from the blood vessel. Finally, the device is withdrawn from the body to terminate the surgical procedure.
Preferably, the support disc 22 is a circular support disc, and the radius of the support disc 22 is greater than the radius of rotation of the barbs 21.
It should be noted that, the support disc 22 is a circular support disc, and the diameter of the support disc 22 needs to be set according to the diameter of the blood vessel, because the support disc 22 needs to provide space for the movement of the drill bit 20 and the barbs 21, and the rotation process of the barbs 21 can cut and crush the thrombus. Therefore, the support disc 22 has a circular structure, and when the radius of the support disc 22 is larger than the rotation radius of the barb 21, the barb 21 can not directly touch the vessel wall when rotating, so as to avoid damage to the vessel.
Preferably, both drill bit 20 and support disc 22 are flexible material support disc 22 in order to avoid damaging the blood vessel.
It should be noted that, when the support disc 22 is in the non-working state, that is, when the drill handle 12 is released from the fixing portion, the support disc 22 needs to be fully retracted in the grabbing catheter 24, and when the drill handle 12 is locked to the fixing portion, the driving device may push the drill handle 12 forward, so that the support disc 22 may be pushed out of the grabbing catheter 24, and the pushed support disc 22 may be expanded, so as to provide a space for movement of the drill bit 20 and the barb 21, and avoid damage to the vessel wall caused when the drill bit 20 and the barb 21 directly contact the vessel wall. The support disc 22 should therefore be provided as a flexible material piece, so that it can undergo a shrink transformation. The drill bit 20 is made of a flexible material, so that the damage to the vessel wall caused by the direct contact of the drill bit 20 with the vessel wall can be avoided.
Therefore, in the practical application process, the materials of the drill bit 20 and the support disc 22 can be determined according to the practical situation and the practical requirement, and for example, the support disc 22 can be made of rubber materials or PET materials. The shape, size, position, etc. of the support disc 22 may also be determined to ensure that the gripping means 3 does not damage the vessel wall and that the drill bit 20 and the barbs 21 are able to perform the corresponding operation smoothly.
Based on the above-described high-precision automated thrombus drilling device, it is preferable that the drill bit 20 is vertically disposed on the support plate 22, and the height of the drill bit 20 is less than or equal to four fifths of the radius of the support plate, so as to avoid damaging the blood vessel at the top of the drill bit 20.
This is because when the drill handle 12 is locked with the fixing portion, the driving device pushes the support disc 22, the drill 20, the barbs 21, etc. to separate from the grabbing catheter 24, the support disc 22 can provide a movement space for the drill 20 and the barbs 21, and if the height of the drill 20 is too large or even larger than the radius of the support disc, the space provided by the support disc 22 cannot be satisfied by the drill 20 when the support disc 22 and the drill 20 are pushed out of the grabbing catheter 24, so that the top of the drill 20 is in direct contact with the wall of the blood vessel, thereby easily causing the phenomenon that the top of the drill 20 damages the blood vessel.
Preferably, the furthest distance of the barbs 21 from the drill bit 20 is less than or equal to three-quarters of the radius of the support disc to avoid damaging the blood vessel when the barbs 21 are moved.
It should be noted that, the furthest distance between the barb 21 and the drill bit 20 is less than or equal to three quarters of the radius of the support disc, and since the barb 21 is disposed perpendicular to the drill bit 20, it means that the maximum length of the barb 21 is less than or equal to three quarters of the radius of the support disc, that is, the distance between the sharp angle of the barb 21 and the drill bit 20 is less than or equal to three quarters of the radius of the support disc. This will avoid the occurrence of massive hemorrhages due to the damage to the vessel wall during rotation of the barbs 21.
Therefore, the position, size, material, etc. of the barbs 21 can be determined according to the actual situation, so that the barbs 21 can effectively wind the stretched thrombus or cut the crushed thrombus, and the barbs 21 do not damage the blood vessel.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. Any combination of all the embodiments provided in the present invention is within the protection scope of the present invention, and will not be described herein.
The high-precision automatic thrombus drilling device provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.