CN115317125A - Excimer laser catheter conveying device - Google Patents
Excimer laser catheter conveying device Download PDFInfo
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- CN115317125A CN115317125A CN202210981915.XA CN202210981915A CN115317125A CN 115317125 A CN115317125 A CN 115317125A CN 202210981915 A CN202210981915 A CN 202210981915A CN 115317125 A CN115317125 A CN 115317125A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B18/24—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter
- A61B18/245—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter for removing obstructions in blood vessels or calculi
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
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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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0113—Mechanical advancing means, e.g. catheter dispensers
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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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M25/09041—Mechanisms for insertion of guide wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00404—Blood vessels other than those in or around the heart
- A61B2018/0041—Removal of thrombosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/0091—Handpieces of the surgical instrument or device
- A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B2018/225—Features of hand-pieces
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
- A61B2090/065—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension for measuring contact or contact pressure
-
- 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
- A61M2025/0001—Catheters; Hollow probes for pressure measurement
- A61M2025/0002—Catheters; Hollow probes for pressure measurement with a pressure sensor at the distal end
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- Laser Surgery Devices (AREA)
Abstract
The invention belongs to the technical field of laser medical treatment, in particular to an excimer laser catheter conveying device, aiming at the problem that the force is not easy to master after an obstacle is met during the laser catheter propulsion in the prior art, the excimer laser catheter conveying device comprises an outer tube, wherein a cavity is arranged in the outer tube, the outer tube is of a square tubular structure, a handle is fixed on the outer wall of the outer tube close to one end of the outer tube, a display screen is arranged on one side of the top end of the handle, a plurality of adjusting buttons are arranged on the side surface of the handle, a controller is arranged in the handle, a propulsion mechanism is arranged on the inner wall of the outer tube above the handle, and the propulsion mechanism comprises a groove-shaped slide rail fixed on the inner wall of the bottom of the outer tube. When the blocking object in the blood vessel needs to be dredged, the guide wire and the laser catheter are controlled to advance simultaneously, the guide wire with high toughness can advance in the blood vessel along with the advance, the guide wire can enter along with the laser catheter, and the laser can be used for breaking the target blocking blood clot when reaching the blocking position.
Description
Technical Field
The invention relates to the technical field of laser medical treatment, in particular to an excimer laser catheter conveying device.
Background
The method is a new technology for carrying out ablation on thrombus plaques in human blood vessels by using excimer laser, wherein the laser acts on the thrombus plaques in the human blood vessels to crack plaque tissues (the plaque tissues are cracked into harmless products), the diameter of a byproduct is less than 10 mu m, the byproduct is easy to pass by a vascular endothelial system, so that the blockage of micro-blood vessels can be avoided, the purpose of dredging the blood vessels to open blood flow is achieved, the function of conveying blood by the blood vessels is recovered, and the capability of blood vessel circulation and metabolism is improved.
However, during use, two difficulties need to be overcome: firstly, the moving speed is slowly (0.2 mm/s-1 mm/s) and uniformly; secondly, applying proper forward conveying force to the catheter to enable the catheter to be close to the lesion, then releasing laser energy, and carrying out ablation on the thrombus plaque tissue within a proper excimer laser distance range (20-100 micrometers); but the speed is kept between 0.2mm/s and 1mm/s and is constant as much as possible, so that the operation difficulty is increased for the use of a surgeon; therefore, a novel conveying device capable of stably and uniformly propelling the laser guide pipe when an obstacle is met is needed.
Disclosure of Invention
The invention provides an excimer laser catheter conveying device, which comprises an outer tube, wherein a cavity is arranged in the outer tube, the outer tube is integrally of a square tubular structure, a handle is fixed on the outer wall of the outer tube close to one end of the outer tube, a display screen is arranged on one side of the top end of the handle, a plurality of adjusting buttons are arranged on the side face of the handle, a controller is arranged in the handle, a signal output end of the controller is connected with a signal input end of the display screen through a signal line and is used for displaying propelling speed and pressure so as to control propelling speed in real time to break encountered obstacles with the most accurate force, a propelling mechanism is arranged on the inner wall of the outer tube above the handle and comprises a groove-shaped slide rail fixed on the inner wall of the bottom of the outer tube, a boss slide block is connected in the groove-shaped slide rail in a sliding mode, a speed reducing motor is detachably and fixedly connected to the top end of an output shaft of the speed reducing motor, a speed reducing gear set meshed with the driving gear is arranged on the side face of the outer tube, fixing plate bars which are horizontally arranged close to two opposite side inner walls of the outer tube, and are fixed with two ends of the fixing plate bars which are fixed with guide snap rings, a transmission screw rod, and can also slide in an axial direction; a driving long gear meshed with the reduction gear set is fixed at one end, close to the reduction gear set, of the transmission screw, a pressure measuring mechanism is arranged at the top end of the reduction motor, a pressure sensor matched with the pressure measuring mechanism is arranged on the inner wall of one end, far away from the opening, of the outer pipe, and the signal output end of the pressure sensor is connected with the signal input end of the controller through a signal line; the top end of the outer tube is provided with a notch communicated with the tube opening, a connecting piece is connected in the notch in a sliding manner, the bottom end of the connecting piece is in threaded connection with the transmission screw rod, the top end of the connecting piece is respectively clamped with the laser catheter and the guide wire, and the laser catheter and the guide wire advance side by side; through the setting of advancing mechanism, when needing to dredge to the barrier in the blood vessel, control seal wire and laser catheter simultaneously advance, the seal wire that toughness is strong can be along with promoting advancing at the blood vessel, and laser can be along with getting into immediately along with laser catheter, and the target separation clot can be abolished to the arrival separation department to laser.
As a further aspect of the present invention, a self-locking screw hole coaxial with the transmission screw is formed at the bottom end of the connecting piece, a guide wire clamping groove adapted to the guide wire is formed on the side surface of the connecting piece close to the top end, a guide wire clamping block is arranged on the side surface of the guide wire clamping groove, an arc-shaped groove is formed at the top end of the connecting piece, the laser guide pipe is clamped in the arc-shaped groove, and a guide pipe clamping piece is arranged on one side of the arc-shaped groove; is used to hold the guide wire and laser catheter tightly against the connector for advancement with the connector.
As a further aspect of the invention, an end cover is fixed at the opening of the outer tube, a guide block is fixed at the top end of the end cover close to the notch, a disinfection lamp tube and a disinfection box are respectively arranged at two sides of the guide block, the disinfection box comprises disinfection cotton sleeved on the outer wall of the guide wire and the outer wall of the laser catheter, a liquid injection port is formed at the top of the disinfection box, and the disinfection cotton is slidably connected with the outer wall of the laser catheter; through the comprehensive arrangement of the disinfection cotton and the disinfection lamp tube, the laser catheter can be disinfected again at last when being pushed, namely before entering a blood vessel, so that the possibility of bacterial infection is reduced.
As a further aspect of the invention, a catheter clamping piece is clamped on the outer wall of the advancing end of the laser catheter, a clamping groove with the radius matched with the outer diameter of the laser catheter is formed in one side, close to the laser catheter, of the catheter clamping piece, a T-shaped sliding groove is formed in one end, close to an outer tube, of the bottom of the clamping groove, a through hole matched with the diameter of a guide wire is formed in one side, far away from the clamping groove, of the catheter clamping piece, a rubber bump with the outline matched with the T-shaped sliding groove is reserved on the outer wall, close to the advancing end, of the laser catheter, and the outer wall of the rubber bump and the inner wall of the T-shaped sliding groove form interference fit; the rubber bump can be plugged into the T-shaped sliding groove only by exerting force, so that when the guide wire and the laser catheter are controlled to advance together, the advancing ends of the guide wire and the laser catheter can advance in a flush manner, and the situation that the fork is generated is avoided.
As a further aspect of the present invention, a spring baffle plate having a C-shaped structure is fastened to the top end of the guide snap ring adjacent to the driving long gear, and a return spring is disposed between the side surface of the spring baffle plate and the side surface of the driving long gear; through reset spring's setting, can let drive screw and drive long gear conflict pressure measurement mechanism all the time for the phenomenon that the pressure measurement is stably avoided appearing the shake or is violently strikeed and lead to the pressure reading grow appears.
As a further aspect of the present invention, the pressure measuring mechanism includes a fixed block fixed at the top end of the speed reduction motor, and the top end of the fixed block is fixed with a telescopic tube through a screw, the telescopic tube includes a main tube fixed at the top end of the fixed block and an inner slide bar slidably connected to the inner wall of the end portion of the main tube, two ends of the inner slide bar are respectively fixed with a U-shaped abutting plate and a compression spring, one side of the U-shaped abutting plate near the driving long gear is provided with a plurality of ball grooves distributed at equal intervals, and the ball grooves are all rotatably connected with balls; a component force resisting rod is arranged between the tail end of the speed reducing motor and the surface of the pressure sensor, one end of each component force resisting rod, which is close to the speed reducing motor, is fixedly provided with the same baffle plate, and the side surface of each baffle plate, which is close to the top end, is in contact with the end part of the compression spring; through the setting of this kind of pressure measurement mechanism, when the device gos forward at control laser catheter and abolishes the obstacle, can let the more lasting reaction of thrust that the reaction was returned at pressure sensor, the dynamics that the doctor of being convenient for can advance once more of more accurate control.
As a further aspect of the present invention, a notch is formed in one side of the boss slider close to the pressure sensor, a spring fixing member is fixed at one end of the groove-shaped slide rail, which is located at the pressure sensor, at the bottom of the groove-shaped slide rail, a first tension spring is fixed between the spring fixing member and the side surface of the boss slider, and the size of the notch is matched with the outer diameter of the first tension spring, so that the baffle plate is always attached to the surface of the pressure sensor with stable pressure, and the baffle plate does not fall off, and can be ensured not to be inclined when pressure fluctuation is generated, and the baffle plate can return to the original position after pressure cancellation.
As a further aspect of the present invention, the reduction gear set includes a bearing bracket fixed on an inner wall of the outer tube and close to a U-shaped structure below the driving long gear, and a shaft rod is rotatably connected in the middle of the bearing bracket, a first intermediate gear and a second intermediate gear having different diameters are sleeved on an outer circumferential wall of the shaft rod, the diameter of the first intermediate gear is smaller than that of the second intermediate gear, the diameter of the driving long gear is smaller than that of the driving gear, the driving long gear is engaged with the first intermediate gear, and the second intermediate gear is engaged with the driving gear; it is possible to reduce the rotation speed and stabilize the propulsion speed while ensuring the pressure transmission.
As a further aspect of the present invention, one end of the return spring close to the spring baffle is fixed on the spring baffle, and the other end of the return spring is fixed with a thrust ball bearing; the friction force between the end of the return spring and the side face of the driving long gear is reduced.
As a further aspect of the present invention, the thickness of the gear of the driving long gear is equal to three to five times of the thickness of the intermediate gear, so as to ensure that the driving long gear is always engaged with the intermediate gear when the transmission screw is pressed, thereby avoiding the interruption of the driving.
The beneficial effects of the invention are as follows:
1. through the setting of advancing mechanism, when needing to dredge to the barrier in the blood vessel, control seal wire and laser catheter simultaneously advance, the seal wire that toughness is strong can be along with promoting advancing at the blood vessel, and laser can be along with getting into immediately along with laser catheter, and the target separation clot can be abolished to the arrival separation department to laser.
2. Through the comprehensive arrangement of the disinfection cotton and the disinfection lamp tube, the laser catheter can be disinfected again at the last when being pushed, namely before entering a blood vessel, so that the possibility of bacterial infection is reduced.
3. Through the setting of rubber lug in the pipe fastener, need exert oneself promptly and just can fill in the T shape spout with rubber lug to can be when using, when control seal wire and laser catheter together advance, the end of advancing of seal wire and laser catheter can be neat to go forward, avoids producing the jag.
4. Through reset spring's setting, can let drive screw and drive long gear conflict pressure measurement mechanism all the time for the phenomenon that the pressure measurement is stably avoided appearing the shake or is violently strikeed and lead to the pressure reading grow appears.
5. Through the setting of this kind of pressure measurement mechanism, when the device gos forward at control laser catheter and abolishes the obstacle, can let the more lasting reaction of thrust that the reaction was returned at pressure sensor, the dynamics that the doctor of being convenient for can advance once more of more accurate control.
Drawings
FIG. 1 is a schematic diagram of an overall structure of an excimer laser catheter delivery apparatus according to the present invention;
FIG. 2 is a schematic diagram of an internal structure of an excimer laser catheter delivery apparatus according to the present invention;
FIG. 3 is a structural diagram of a catheter fastener in an excimer laser catheter delivery apparatus according to the present invention;
FIG. 4 is an assembly view of a catheter fastener of an excimer laser catheter delivery apparatus according to the present invention;
FIG. 5 is a front view of an excimer laser catheter delivery apparatus according to the present invention;
FIG. 6 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 5 of an excimer laser catheter delivery apparatus according to the present invention;
FIG. 7 is a side view of the internal structure of an excimer laser catheter delivery device according to the present invention;
FIG. 8 is an assembly view of a sterilization case of the excimer laser catheter delivery apparatus according to the present invention;
FIG. 9 is a perspective view of a pressure measuring mechanism in the excimer laser catheter delivery apparatus according to the present invention;
FIG. 10 is a schematic view of a half-section structure of a catheter fastener in a pressure measuring mechanism of an excimer laser catheter delivery apparatus according to the present invention;
FIG. 11 is a schematic diagram of a Y valve in a pressure measuring mechanism of an excimer laser catheter delivery apparatus according to the present invention.
In the figure: 1. an outer tube; 101. clamping blocks I, 102 and a clamping block II; 2. a laser catheter; 3. a connecting member; 4. a guide wire; 5. a guide block; 6. sterilizing the lamp tube; 7. a conduit clamp; 701. a T-shaped chute; 702. a rubber bump; 703. a through hole; 704. a card slot; 705. a backstop clamping block; 706. an electromagnet; 707. a silica gel layer; 708. a permanent magnet; 8. an end cap; 9. a display screen; 10. a handle; 11. an adjustment button; 12. a drive screw; 13. a guide snap ring; 1301. a spring retainer; 14. a guide wire clamping groove; 15. fixing the lath; 16. a bearing bracket; 17. a first intermediate gear; 18. a second intermediate gear; 19. a reduction motor; 20. a groove-shaped sliding rail; 21. a pressure sensor; 22. a component force resisting rod; 23. a telescopic pipe; 24. a driving long gear; 25. a return spring; 26. a U-shaped butt plate; 27. a compression spring; 28. a first tension spring; 29. a sterilizing box; 30. a ball bearing; 31. a liquid injection port; 32. disinfecting cotton; 33. a fixed block; 34. and a Y valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1-10, an excimer laser catheter delivery device comprises an outer tube 1 with an inner cavity and a square tubular structure, wherein the long edge of the outer wall of the outer tube 1 is chamfered, a handle 10 is fixed on the outer wall of the outer tube 1 near one end of the outer wall, a display screen 9 is arranged on one side of the top end of the handle 10, a plurality of adjusting buttons 11 are arranged on the side surface of the handle 10, a controller is arranged in the handle 10, the signal output end of the controller is connected with the signal input end of the display screen 9 through a signal line and used for displaying propelling speed and pressure so as to control propelling speed in real time to break encountered obstacles with the most accurate force, a propelling mechanism is arranged on the inner wall of the outer tube 1 above the handle 10, the propelling mechanism comprises a groove-shaped slide rail 20 fixed on the inner wall of the bottom of the outer pipe 1, a boss slide block is slidably connected in the groove-shaped slide rail 20, the top end of the boss slide block is detachably and fixedly connected with a speed reducing motor 19, a driving gear is fixed at the top end of an output shaft of the speed reducing motor 19, a speed reducing gear set meshed with the driving gear is arranged on the side surface of the outer pipe 1, horizontally arranged fixing plate strips 15 are fixed on the inner walls of two opposite sides of the outer pipe 1 close to two ends, guide snap rings 13 are fixed on the top ends of the two fixing plate strips 15, a transmission screw 12 is slidably connected between the two guide snap rings 13, threads are not engraved on two ends of the transmission screw 12, and the transmission screw can rotate in the guide snap rings 13 and can also axially slide; a driving long gear 24 meshed with the reduction gear set is fixed at one end, close to the reduction gear set, of the transmission screw 12, a pressure measuring mechanism is arranged at the top end of the reduction motor 19, a pressure sensor 21 matched with the pressure measuring mechanism is arranged on the inner wall of one end, far away from the opening, of the outer pipe 1, and the signal output end of the pressure sensor 21 is connected with the signal input end of the controller through a signal line; the top end of the outer tube 1 is provided with a notch communicated with the tube opening, a connecting piece 3 is connected in the notch in a sliding manner, the bottom end of the connecting piece 3 is in threaded connection with a transmission screw 12, the top end of the connecting piece 3 is respectively clamped with a laser catheter 2 and a guide wire 4, and the laser catheter 2 and the guide wire 4 advance side by side; through advancing mechanism's setting, when needing to dredge to the barrier in the blood vessel, control seal wire 4 and laser catheter 2 simultaneously and advance, the seal wire 4 that toughness is strong can be along with promoting advancing at the blood vessel, and laser breaks out target separation clot along with getting into next to laser catheter 2, arrives separation department and can carry out the laser.
In the invention, the bottom end of a connecting piece 3 is provided with a self-locking screw hole which is coaxial with a transmission screw 12, the side surface of the connecting piece 3 close to the top end is provided with a guide wire clamping groove 14 which is matched with a guide wire 4, the side surface of the guide wire clamping groove 14 is provided with a guide wire clamping block, the top end of the connecting piece 3 is provided with an arc-shaped groove, a laser guide pipe 2 is clamped in the arc-shaped groove, and one side of the arc-shaped groove is provided with a guide pipe clamping piece; for tightly securing the guide wire 4 and the laser catheter 2 to the connector 3 to advance with the advancement of the connector 3.
Referring to fig. 8, an end cover 8 is fixed at the opening of the outer tube 1, a guide block 5 is fixed at the top end of the end cover 8 close to the notch, a disinfection lamp tube 6 and a disinfection box 29 are respectively arranged at two sides of the guide block 5, the disinfection box 29 comprises disinfection cotton 32 sleeved on the outer wall of the guide wire 4 and the outer wall of the laser catheter 2, a liquid injection port 31 is formed at the top of the disinfection box 29, and the disinfection cotton 32 is slidably connected with the outer wall of the laser catheter 2; by the combined arrangement of the sterilizing cotton 32 and the sterilizing lamp 6, the laser catheter 2 can be sterilized again at the end of its advancement, i.e. before entering the blood vessel, so as to reduce the possibility of bacterial infection.
Referring to fig. 3-4, a catheter clamping member 7 is clamped on the outer wall of the advancing end of the laser catheter 2, a clamping groove 704 with the radius matched with the outer diameter of the laser catheter 2 is formed in one side, close to the laser catheter 2, of the catheter clamping member 7, a T-shaped sliding groove 701 is formed in one end, close to the outer tube 1, of the bottom of the clamping groove 704, a through hole 703 matched with the diameter of the guide wire 4 is formed in one side, away from the clamping groove 704, of the catheter clamping member 7, a rubber bump 702 with the outline matched with the T-shaped sliding groove 701 is reserved near the advancing end of the outer wall of the laser catheter 2, and the outer wall of the rubber bump 702 and the inner wall of the T-shaped sliding groove 701 form an interference fit: namely, the rubber bump 702 can be plugged into the T-shaped sliding groove 701 by force, so that when the guide wire 4 and the laser catheter 2 are controlled to advance together, the advancing ends of the guide wire 4 and the laser catheter 2 can move forward and backward in a flush manner, and the generation of forking is avoided.
Referring to fig. 7, a spring baffle 1301 having a C-shaped structure is fastened to the top end of the guide snap ring 13 close to the driving long gear 24, and a return spring 25 is disposed between the side surface of the spring baffle 1301 and the side surface of the driving long gear 24; through the setting of reset spring 25, can let drive screw 12 and drive long gear 24 conflict pressure measurement mechanism all the time for the phenomenon that the pressure measurement is stable to be avoided appearing the shake or hit suddenly and lead to the pressure reading grow appears.
Referring to fig. 9, the pressure measuring mechanism includes a fixed block 33 fixed on the top end of the speed reducing motor 19, and the top end of the fixed block 33 is fixed with a telescopic tube 23 through a screw, the telescopic tube 23 includes a main tube fixed on the top end of the fixed block 33 and an inner slide bar connected to the inner wall of the end portion of the main tube in a sliding manner, two ends of the inner slide bar are respectively fixed with a U-shaped abutting plate 26 and a compression spring 27, one side of the U-shaped abutting plate 26 close to the driving long gear 24 is provided with a plurality of ball grooves distributed at equal intervals, and the ball grooves are connected with balls 30 in a rotating manner; a component force resisting rod 22 is arranged between the tail end of the speed reducing motor 19 and the surface of the pressure sensor 21, and one end of each component force resisting rod 22 close to the speed reducing motor 19 is fixed with the same baffle plate, and the side surface close to the top end of the baffle plate is contacted with the end part of the compression spring 27; through the setting of this kind of pressure measurement mechanism, when the device gos forward at control laser pipe 2 and breaks away the obstacle, can let the more lasting reaction of thrust that the reaction was returned on pressure sensor 21, the dynamics that the doctor of being convenient for can advance once more of more accurate control.
Referring to fig. 6, a notch is formed in one side, close to the pressure sensor 21, of the boss slider, a spring fixing piece is fixed at one end, located at the pressure sensor 21, of the bottom of the groove-shaped slide rail 20, a first tension spring 28 is fixed between the spring fixing piece and the side face of the boss slider, and the size of the notch is matched with the outer diameter of the first tension spring 28, so that the baffle plate is attached to the surface of the pressure sensor 21 with stable pressure all the time and cannot fall off; moreover, when pressure fluctuation occurs, the baffle plate can be ensured not to be skewed, and the baffle plate can return to the original position after the pressure is removed.
Referring to fig. 6-7, the reduction gear set includes a bearing bracket 16 fixed on the inner wall of the outer tube 1 and close to the lower part of the driving long gear 24, the bearing bracket 16 is in a U-shaped structure, the middle of the bearing bracket 16 is rotatably connected with a shaft rod, the circumferential outer wall of the shaft rod is sleeved with a first intermediate gear 17 and a second intermediate gear 18 with different diameters, the diameter of the first intermediate gear 17 is smaller than that of the second intermediate gear 18, the diameter of the driving long gear 24 is smaller than that of the driving gear, the driving long gear 24 is meshed with the first intermediate gear 17, and the second intermediate gear 18 is meshed with the driving gear; it is possible to reduce the rotation speed and stabilize the propulsion speed while ensuring the pressure transmission.
Referring to fig. 7, one end of the return spring 25 close to the spring retainer 1301 is fixed on the spring retainer 1301, and the other end of the return spring 25 is fixed with a thrust ball bearing; the friction force between the end part of the return spring 25 and the side surface of the driving long gear 24 is reduced, the thickness of the gear of the driving long gear 24 is equal to three to five times of the thickness of the first intermediate gear 17, the driving long gear 24 is ensured to be always meshed with the first intermediate gear 17 when the transmission screw 12 is pressed, and the driving interruption is avoided.
A second clamping block 102 and a first clamping block 101 for fixing the laser catheter 2 and the guide wire 4 are respectively fixed at one end of the upper surface of the outer tube 1, which is far away from the tube opening; and one side of the catheter clamping piece 7, which is far away from the outer tube 1, is provided with a clamping block clamping groove which is mutually communicated with the through hole 703, a backstop clamping block 705 is rotatably connected between the inner walls of the two sides of the clamping block clamping groove, one side of the backstop clamping block 705, which is close to the guide wire 4, is provided with an arc-shaped groove, a silica gel layer 707 is fixed in the arc-shaped groove, one side of the backstop clamping block 705, which is far away from the silica gel layer 707, is embedded with a permanent magnet 708, an electromagnet 706 with a magnetic pole opposite to that of the permanent magnet 708 is fixed at the bottom of the clamping block clamping groove, and when relative rest needs to be formed between the backstop clamping block 705 and the guide wire 4 through the combination arrangement of the electromagnet 706 and the permanent magnet 708, the electromagnet 706 is electrified, and the silica gel layer 707 tightly abuts against the surface of the guide wire 4 at the moment to form relative rest.
Before use, the advancing ends of the laser catheter 2 and the guide wire 4 are fixed by the catheter clamping piece 7, the rubber bump 702 is plugged into the T-shaped sliding groove 701 forcibly during fixing, and when the guide wire 4 and the laser catheter 2 are controlled to advance together, the advancing ends of the guide wire 4 and the laser catheter 2 can be aligned and advanced, so that the generation of forking is avoided; then, the laser catheter 2 is manually pushed forward when advancing in a normal blood vessel without obstruction, when encountering obstructions such as thrombus plaques and the like, the laser catheter 2 is firstly fixed by the second clamping block 102, then the guide wire 4 is slowly threaded until the guide wire runs to the vicinity of the obstruction, then the guide wire 4 is fixed by the first clamping block 101, then the laser catheter 2 is fixed on the connecting piece 3, through the arrangement of the pushing mechanism, when the obstruction in the blood vessel needs to be dredged, the advancing button in the adjusting button 11 is simultaneously controlled to be pressed, at the moment, the speed reducing motor 19 is started, and then the laser catheter 2 is driven to advance through a series of transmission; until the blood vessel is aligned with the end part of the guide wire 4, the electromagnet 706 is electrified, so that the electromagnet 706 and the permanent magnet 708 form repulsive force, namely the silica gel layer 707 is tightly propped against the outer wall of the guide wire 4, namely the guide wire 4 and the laser catheter 2 are relatively fixed, then the guide wire 4 is pushed to advance, the guide wire 4 with strong toughness can advance in the blood vessel along with the advance, the laser catheter 2 can enter along with the advance, the resistance is quickly displayed when the guide wire 4 reaches the blocking part, meanwhile, the laser catheter 2 can ablate and eliminate plaque in the blood vessel, plaque tissues are cracked into harmless products after ablation, and the products are discharged out of the body along with blood circulation.
Example two
Referring to fig. 11, a mounting hole is opened in the middle of the guide block 5, and a Y valve 34 is clamped in the mounting hole, wherein the Y valve 34 comprises a main pipe horizontally arranged and a liquid injection pipe obliquely penetrating the main pipe, wherein the laser catheter 2 and the guide wire 4 both penetrate the main pipe, and both ends of the main pipe are provided with lock nuts, through the arrangement of the Y valve, necessary medicine injection can be performed on a blood vessel from the pipe orifice of the liquid injection pipe in the operation process, the operation is assisted, and then the emergency stop operation of the guide wire 4 and the laser catheter 2 can be performed by screwing the lock nuts.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. An excimer laser catheter conveying device comprises an outer tube (1) with an inner cavity integrally in a square tubular structure, wherein a handle (10) is fixed at one end, close to the outer wall of the outer tube (1), and is characterized in that a pushing mechanism is arranged on the inner wall of the outer tube (1) and above the handle (10), the pushing mechanism comprises a speed reducing motor (19) which is arranged on the inner wall of the bottom of the outer tube (1) and far away from a tube opening, a driving gear is fixed at the top end of an output shaft of the speed reducing motor (19), a speed reducing gear set meshed with the driving gear is arranged on the side face of the outer tube (1), horizontally arranged fixing laths (15) are fixed at two ends, close to the two ends, of the inner walls at two opposite sides of the outer tube (1), guide clamping rings (13) are fixed at the top ends of the two fixing laths (15), and a transmission screw (12) is connected between the two guide clamping rings (13) in a sliding manner; a driving long gear (24) meshed with the reduction gear set is fixed at one end, close to the reduction gear set, of the transmission screw (12), a pressure measuring mechanism is arranged at the top end of the reduction motor (19), and a pressure sensor (21) matched with the pressure measuring mechanism is arranged on the inner wall of one end, far away from the opening, of the outer pipe (1); the top of outer tube (1) is opened has the notch that link up mutually with the mouth of pipe, just sliding connection has connecting piece (3) in the notch, the bottom spiro union of connecting piece (3) is in on drive screw (12), just the top of connecting piece (3) is the joint respectively has laser pipe (2) and seal wire (4), just connecting piece (3) can drive laser pipe (2) advance, or drive laser pipe (2) and seal wire (4) advance side by side.
2. The excimer laser catheter conveying device according to claim 1, wherein a display screen (9) is arranged on one side of the top end of the handle (10), a plurality of adjusting buttons (11) are arranged on the side surface of the handle (10), a controller is arranged in the handle (10), a self-locking screw hole coaxial with the transmission screw rod (12) is formed in the bottom end of the connecting piece (3), a guide wire clamping groove (14) matched with the guide wire (4) is formed in the side surface of the connecting piece (3) close to the top end, a guide wire clamping block is arranged on the side surface of the guide wire clamping groove (14), an arc-shaped groove is formed in the top end of the connecting piece (3), the laser catheter (2) is clamped in the arc-shaped groove, and a catheter clamping piece is arranged on one side of the arc-shaped groove.
3. The excimer laser catheter conveying device as claimed in claim 1, wherein an end cap (8) is fixed at an opening of the outer tube (1), a guide block (5) is fixed at a position, close to the notch, of the top end of the end cap (8), a disinfection lamp tube (6) and a disinfection box (29) are respectively arranged on two sides of the guide block (5), the disinfection box (29) comprises disinfection cotton (32) sleeved on the outer walls of the guide wire (4) and the laser catheter (2), a liquid injection port (31) is formed in the top of the disinfection box (29), and the disinfection cotton (32) is slidably arranged on the outer wall of the laser catheter (2).
4. The excimer laser catheter conveying device according to claim 1, wherein a catheter clamping piece (7) is clamped on the outer wall of the advancing end of the laser catheter (2), a clamping groove (704) with a radius matched with the outer diameter of the laser catheter (2) is formed in one side, close to the laser catheter (2), of the catheter clamping piece (7), a T-shaped sliding groove (701) is formed in one end, close to the outer tube (1), of the bottom of the clamping groove (704), a through hole (703) matched with the diameter of the guide wire (4) is formed in one side, far away from the clamping groove (704), of the catheter clamping piece (7), a rubber bump (702) with an outer contour matched with the T-shaped sliding groove (701) is reserved on the outer wall of the laser catheter (2) close to the advancing end, and the outer wall of the rubber bump (702) and the inner wall of the T-shaped sliding groove (701) form an interference fit.
5. The excimer laser catheter delivery device according to claim 4, wherein one end of the upper surface of the outer tube (1) far away from the nozzle is respectively fixed with a second clamping block (102) and a first clamping block (101) for fixing the laser catheter (2) and the guide wire (4); and a clamping block clamping groove which is mutually communicated with the through hole (703) is formed in one side, away from the outer tube (1), of the catheter clamping piece (7), a stopping clamping block (705) is rotatably connected between the inner walls of the two sides of the clamping block clamping groove, an arc-shaped groove is formed in one side, close to the guide wire (4), of the stopping clamping block (705), a silica gel layer (707) is fixed in the arc-shaped groove, a permanent magnet (708) is embedded in one side, away from the silica gel layer (707), of the stopping clamping block (705), and an electromagnet (706) with a magnetic pole opposite to that of the permanent magnet (708) is fixed at the bottom of the clamping block clamping groove.
6. The excimer laser catheter conveying device as claimed in claim 1, wherein a spring baffle (1301) having a C-shaped structure is clamped at the top end of the guide snap ring (13) close to the driving long gear (24), and the return spring (25) is arranged between the side surface of the spring baffle (1301) and the side surface of the driving long gear (24).
7. The excimer laser catheter conveying device according to claim 6, wherein the pressure measuring mechanism comprises a fixed block (33) fixed at the top end of a speed reducing motor (19), a telescopic tube (23) is fixed at the top end of the fixed block (33) through a screw, the telescopic tube (23) comprises a main tube fixed at the top end of the fixed block (33) and an inner slide bar slidably connected to the inner wall of the main tube, a U-shaped abutting plate (26) and a compression spring (27) are respectively fixed at two ends of the inner slide bar, a plurality of ball grooves distributed at equal intervals are formed in one side, close to the driving long gear (24), of the U-shaped abutting plate (26), and balls (30) are rotatably connected in the ball grooves; a plurality of component force resisting rods (22) are arranged between the tail end of the speed reducing motor (19) and the surface of the pressure sensor (21), one end, close to the speed reducing motor (19), of each component force resisting rod (22) is fixedly provided with the same baffle plate, and the side face, close to the top end, of each baffle plate is in contact with the end portion of the corresponding end of the compression spring (27).
8. The excimer laser catheter conveying device according to claim 7, wherein the propulsion mechanism further comprises a groove-shaped slide rail (20) fixed to the bottom of the inner wall of the outer tube (1), a boss slide block is slidably connected to the groove-shaped slide rail (20), the speed reduction motor (19) is fixed to the top end of the boss slide block, a notch is formed in one side, close to the pressure sensor (21), of the boss slide block, a spring fixing part is fixed to one end, close to the pressure sensor (21), of the groove bottom of the groove-shaped slide rail (20), a first tension spring (28) is fixed between the spring fixing part and the inner side wall of the notch, and the size of the notch is matched with the outer diameter of the first tension spring (28).
9. The excimer laser catheter delivery device of claim 6, wherein one end of the return spring (25) close to the spring baffle (1301) is fixed on the spring baffle (1301), the other end of the return spring (25) is fixed with a thrust ball bearing, and the gear thickness of the driving long gear (24) is equal to three to five times of the thickness of the intermediate gear one (17).
10. The excimer laser catheter delivery device according to claim 1, wherein the reduction gear set comprises a bearing frame (16) which is fixed on the inner wall of the outer tube (1) and is close to the lower part of the driving long gear (24) and is in a U-shaped structure, a shaft rod is rotatably connected between two ends of the bearing frame (16), a first intermediate gear (17) with a diameter and a second intermediate gear (18) with a diameter smaller than that of the first intermediate gear (17) are sleeved on the outer wall of the shaft rod, the diameter of the driving long gear (24) is smaller than that of the driving gear, the driving long gear (24) is meshed with the first intermediate gear (17), and the second intermediate gear (18) is meshed with the driving gear.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116531642A (en) * | 2023-06-13 | 2023-08-04 | 辽宁省健康产业集团铁煤总医院 | Electromagnetic control shapable intravascular interventional guide wire system and application |
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| CN103118584A (en) * | 2010-09-22 | 2013-05-22 | 阿克拉伦特公司 | Apparatus for treating disorders of the sinuses |
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| CN116531642B (en) * | 2023-06-13 | 2023-10-20 | 辽宁省健康产业集团铁煤总医院 | Electromagnetic control shapable intravascular interventional guide wire system |
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