CN117694998B - Circulation cooling type ablation device - Google Patents
Circulation cooling type ablation device Download PDFInfo
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- CN117694998B CN117694998B CN202410161117.1A CN202410161117A CN117694998B CN 117694998 B CN117694998 B CN 117694998B CN 202410161117 A CN202410161117 A CN 202410161117A CN 117694998 B CN117694998 B CN 117694998B
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- elastic sleeve
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- elastic
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- 238000002679 ablation Methods 0.000 title claims abstract description 64
- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 210000004204 blood vessel Anatomy 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 14
- 239000002826 coolant Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 230000003134 recirculating effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000013153 catheter ablation Methods 0.000 description 1
- 230000007831 electrophysiology Effects 0.000 description 1
- 238000002001 electrophysiology Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000002690 local anesthesia Methods 0.000 description 1
- 238000012978 minimally invasive surgical procedure Methods 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 238000007674 radiofrequency ablation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The invention relates to the technical field of medical instruments, in particular to a circulating cooling type ablation device, which comprises a control mechanism, wherein the control mechanism is connected with an inner catheter, an outer catheter is sleeved on the inner catheter in a sliding way, the end part of the outer catheter is fixedly connected with a support, one end of the support, which is far away from the outer catheter, is fixedly connected with the inner catheter, the support is of an expandable grid-shaped annular structure, an ablation mechanism is sleeved on the support, the ablation mechanism comprises a first elastic sleeve fixedly sleeved on the support, a plurality of first electrode plates are uniformly arranged on the first elastic sleeve along the circumferential direction, a second elastic sleeve is sleeved on the first elastic sleeve in a sliding way, a plurality of second electrode plates are uniformly arranged on the second elastic sleeve along the circumferential direction, the second elastic sleeve is positioned on one side, which is far away from the control mechanism, of the first elastic sleeve, and an elastic ring is sleeved on the second elastic sleeve.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a circulating cooling type ablation device.
Background
Catheter ablation is an advanced minimally invasive surgical procedure that is focused on inserting an elongated catheter into a patient through a blood vessel (typically a vein or artery) under fluoroscopic, ultrasound or other image guidance. The tip of the catheter is equipped with means for releasing energy, which may be radio frequency electrodes, cryoprobes, lasers, etc., which are capable of generating thermal or cold energy at a precise target location to destroy (ablate) diseased tissue in the blood vessel and thereby treat the patient.
During the treatment, a doctor can determine the focus position according to the electrophysiology examination result and control the catheter to reach the target area for ablation operation. Because of the local anesthesia and the transvascular path, the technique has less trauma and quick recovery compared with the traditional operation, and most patients can be discharged within a few days after receiving treatment.
The prior ablation device heats a polar plate in the ablation process, burns a patient under severe conditions and affects the normal operation, such as a Chinese patent CN201590000029.8, discloses a radio frequency ablation catheter with a petal-shaped bracket structure, which is characterized by comprising a petal-shaped bracket formed by processing the same hollow pipe, wherein the petal-shaped bracket comprises a plurality of bracket wires distributed round around a central axis and a connecting pipe connected with the bracket wires into a whole; wherein, each of the middle sections of the stent wires is respectively provided with one or more electrodes, and the middle section of the petal-shaped stent has a contracted state and an expanded state. Although this application is capable of performing an ablation procedure, it is not possible to avoid heating problems during the ablation procedure, thereby affecting the progress of the ablation procedure.
Accordingly, there is a need for a recirculating cooling type ablation device that addresses the above-described issues.
Disclosure of Invention
In order to solve the problems, namely the problems that the ablation catheter is easy to generate heat in the ablation process to influence the operation progress, the invention provides a circulating cooling type ablation device.
The utility model provides a circulative cooling type ablation device, includes control mechanism, control mechanism is connected with interior pipe, the slip cap is equipped with outer pipe on the interior pipe, the tip fixedly connected with support of outer pipe, the support keep away from the one end of outer pipe with interior pipe fixed connection, the support is for having the annular structure of expansibility latticed, the cover is equipped with ablation mechanism on the support, ablation mechanism is including fixed the cover is established first elastic sleeve on the support, first elastic sleeve is gone up and is evenly provided with two at least first electrode pieces along the circumferencial direction, first elastic sleeve is gone up the slip cap and is equipped with the second elastic sleeve, second elastic sleeve is located first elastic sleeve is kept away from one side of control mechanism, second elastic sleeve is gone up the cover and is equipped with the elastic ring, the elastic ring with first elastic sleeve fixed connection, the second elastic sleeve can be close to control mechanism's direction removes.
Preferably, three connecting pieces are arranged between the first elastic sleeve and the elastic ring along the circumferential direction, the connecting pieces comprise open slots formed in the second elastic sleeve, the end part of the first elastic sleeve, which is close to the second elastic sleeve, is fixedly connected with an L-shaped connecting rod, the connecting rod bends outwards to penetrate through the open slots, and the connecting rods in the three connecting pieces are fixedly connected with the inner circumferential surface of the elastic ring.
Preferably, the first electrode plate and the second electrode plate are arranged in a staggered manner in the radial direction, three sliding grooves are uniformly formed in the first elastic sleeve along the circumferential direction, the sliding grooves are opposite to the second electrode plate, the sliding grooves penetrate through the first elastic sleeve in the radial direction, and the sliding grooves are provided with openings facing the second elastic sleeve so as to allow wires connected with the second electrode plate to enter.
Preferably, the ablation mechanism further comprises a cooling tube, the first electrode plate and the second electrode plate are connected with the cooling tube and a conducting wire, the cooling tube is sleeved on the conducting wire in a gap mode, the end portion of the cooling tube is fixedly connected with the electrode plate, four through holes are evenly formed in the end portion, close to the electrode plate, of the cooling tube in the circumferential direction and used for enabling cooling agent to flow out, and the cooling tube enters the control mechanism through gaps between the inner guide tube and the outer guide tube.
Preferably, the ablation mechanism further comprises a moving part, the moving part comprises a fixing ring fixedly sleeved on the inner catheter, the fixing ring is located in the support, a moving ring is slidably sleeved on the inner catheter and located on one side, close to the control mechanism, of the fixing ring, a spring is connected between the moving ring and the fixing ring, the spring is sleeved on the inner catheter, three inhaul cables are uniformly and fixedly connected to the moving ring in the circumferential direction, three openings are uniformly formed in the support in the circumferential direction, the inhaul cables are fixedly connected with the second elastic sleeve through the openings, and stay ropes are fixedly connected to the moving ring and enter the control mechanism through gaps between the inner catheter and the outer catheter.
Preferably, the control mechanism comprises a control handle, the outer pipe with the tip fixed connection of control handle, be provided with the support control piece in the control handle, the support control piece includes fixed connection and is in first electromagnetic slide rail on the control handle, sliding connection has first electromagnetic slide block in the first electromagnetic slide rail, fixedly connected with feedback loop on the first electromagnetic slide block, the feedback loop cover is established on the control handle, two through grooves have been seted up to last symmetry of control handle, two connecting axle of symmetry fixedly connected with on the interior anchor ring of feedback loop, two the connecting axle runs through respectively through the through groove enters into in the control handle, two fixedly connected with connecting block between the adjacent end of connecting axle, the inner catheter extends into in the control handle, the inner catheter runs through the connecting block, inner catheter with connecting block fixed connection.
Preferably, the control mechanism further comprises an alternate moving part, the alternate moving part further comprises two guide rods fixedly connected in the control handle, a second electromagnetic slide rail is fixedly connected to the bottom wall of the control handle, a second electromagnetic slide block is connected to the second electromagnetic slide rail in a sliding mode, a moving block is fixedly connected to the second electromagnetic slide block, and the pull rope is fixedly connected with the moving block after being guided by the two guide rods.
Preferably, the bracket comprises a middle cylindrical ring and two truncated conical rings which are respectively positioned at two ends of the middle cylindrical ring, the end parts of the middle cylindrical ring are integrally connected with the large-diameter ports of the truncated conical rings, and the small-diameter ports of the two truncated conical rings are respectively fixedly connected with the outer guide pipe and the inner guide pipe through metal rings.
Preferably, the energy source is radio frequency or the like.
The beneficial effects of the invention are as follows:
1. According to the invention, the first electrode plate is firstly used for ablating a blood vessel ablation part through the arrangement of the ablation mechanism, the temperature of the first electrode plate is increased after the first electrode plate is ablated for a period of time, then the second elastic sleeve is moved, the second elastic sleeve is sleeved on the first elastic sleeve, the first electrode plate with higher temperature is prevented from being directly contacted with an affected part of the blood vessel, burn is avoided, meanwhile, the surface of the first electrode plate can be scraped in the moving process of the second elastic sleeve, ablation residues are prevented from being attached to the first electrode plate, then the affected part of the blood vessel is ablated through the second electrode plate, meanwhile, the first electrode plate is cooled, in addition, in the resetting process of the second electrode plate, the elastic ring can be used for scraping the surface of the second electrode plate, the ablation residues are prevented from being attached to the second electrode plate, then the cooled first electrode plate is continuously used for ablating the affected part of the blood vessel, and the second electrode plate is cooled, so that the circular cooling of the electrode plate is formed, and the influence of the heating of the electrode plate on the operation is reduced.
2. According to the invention, the elastic sleeve can be supported through the arrangement of the connecting piece, and the elastic sleeve is kept sleeved on the second elastic sleeve through the arrangement of the connecting rod and the open slot, so that the surface of the second electrode plate can be conveniently scraped when the second elastic sleeve returns.
3. According to the invention, through the arrangement of the sliding groove, the lead connected with the second electrode plate can enter the sliding groove, so that the lead is prevented from being subjected to larger resistance when the second electrode plate moves, and the movement of the second electrode plate is prevented from being influenced.
4. The invention can cool the electrode slice by arranging the cooling pipe, thereby further avoiding the heating of the electrode slice and burning the blood vessel.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a bracket according to the present invention;
FIG. 3 is a schematic view of a partial perspective of an ablation mechanism according to the present invention;
FIG. 4 is a front view of the present invention;
FIG. 5 is a partial isometric sectional view I of the invention taken at A-A of FIG. 4;
FIG. 6 is a partial isometric sectional view II of the invention at A-A of FIG. 4;
FIG. 7 is an enlarged view of a portion of the invention at B in FIG. 5;
FIG. 8 is an enlarged view of a portion of the invention at C in FIG. 6;
FIG. 9 is a right side view of the present invention;
FIG. 10 is an isometric cross-sectional view of the invention taken at D-D in FIG. 9;
FIG. 11 is an enlarged view of a portion of FIG. 10 at E in accordance with the present invention;
FIG. 12 is an enlarged view of a portion of the invention at F in FIG. 10;
Fig. 13 is a partial enlarged view of G in fig. 11 according to the present invention.
In the figure:
1. A control mechanism; 11. a control handle; 12. a bracket control; 121. a first electromagnetic slide rail; 122. a first electromagnetic slide block; 123. a feedback loop; 124. a through groove; 125. a connecting shaft; 126. a connecting block; 13. alternating moving members; 131. a guide rod; 132. the second electromagnetic slide rail; 133. a second electromagnetic slide block; 134. a moving block;
2. an inner catheter; 3. an outer conduit; 4. a bracket;
5. an ablation mechanism; 51. a first elastic sleeve; 52. a first electrode sheet; 53. a second elastic sleeve; 54. a second electrode sheet; 55. an elastic ring; 56. a connecting piece; 561. an open slot; 562. a connecting rod; 563. a sliding groove; 57. a cooling tube; 58. a moving member; 581. a fixing ring; 582. a moving ring; 583. a spring; 584. a guy cable; 585. and (5) pulling the rope.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1,2 and 3, the embodiment of the invention discloses a circulating cooling type ablation device, which comprises a control mechanism 1, wherein the control mechanism 1 is connected with an inner catheter 2, an outer catheter 3 is sleeved on the inner catheter 2 in a sliding way, a support 4 is fixedly connected with the end part of the outer catheter 3, one end of the support 4, which is far away from the outer catheter 3, is fixedly connected with the inner catheter 2, the support 4 is of an expandable latticed annular structure, an ablation mechanism 5 is sleeved on the support 4, the ablation mechanism 5 comprises a first elastic sleeve 51 fixedly sleeved on the support 4, three first electrode plates 52 are uniformly arranged on the first elastic sleeve 51 along the circumferential direction, a second elastic sleeve 53 is uniformly arranged on the second elastic sleeve 53 along the circumferential direction, the second elastic sleeve 53 is positioned on one side, which is far away from the control mechanism 1, of the second elastic sleeve 53 is provided with an elastic ring 55, and the elastic ring 55 can be connected with the first elastic sleeve 53 in a moving way, and the first elastic sleeve 55 can be controlled to move towards the first elastic sleeve 53.
Further, each of the first electrode plates 52 and each of the second electrode plates 54 is connected with a temperature sensor, a controller is disposed in the control mechanism 1, the temperature sensor is electrically connected with the controller, and the first electrode plates 52 and the second electrode plates 54 are electrically connected with the controller.
It should be noted that, the temperature sensor and the controller are in the prior art, and are not described in detail.
Specifically, when in use, the inner catheter 2 and the outer catheter 3 are guided into the blood vessel of a patient through the medical guide wire, then the medical guide wire is moved to drive the inner catheter 2 and the outer catheter 3 to move, the inner catheter 2 and the outer catheter 3 drive the bracket 4 to move in the blood vessel, when the first electrode plate 52 moves to the affected part of the blood vessel, the movement of the medical guide wire is stopped, then the inner catheter 2 is pulled, the inner catheter 2 moves towards the direction close to the control mechanism 1, the bracket 4 is supported under the movement action of the end part of the inner catheter 2, the bracket 4 drives the first elastic sleeve 51, the second elastic sleeve 53 and the elastic ring 55 to support, the first elastic sleeve 51 drives the first electrode plate 52 to be contacted with the affected part of the blood vessel, then the first electrode plate 52 is supplied with power, the first electrode plate 52 ablates the blood vessel, when the temperature sensor detects that the temperature of the ablation site is higher, the controller stops supplying power to the first electrode plate 52, then the second elastic sleeve 53 is pulled to the first elastic sleeve 51, even if the second elastic sleeve 53 moves towards the control mechanism to the affected part of the affected part, the second electrode plate 53 moves towards the direction close to the affected part of the control mechanism, the second electrode plate 54 is further removed from the second electrode plate 52 is moved to the affected part, when the second electrode plate 54 is further removed from the second electrode plate 52 is moved to the affected part, the second electrode plate is further controlled to be heated, the second electrode plate 52 is further removed to the affected by the second electrode plate 52 is further ablation site is heated, and the second electrode plate is further removed to the ablation site is further heated, when the second electrode plate 52 is heated, when the temperature is detected to be heated, the temperature is heated to the temperature is higher is heated, and the temperature is heated to the temperature is heated, in the moving process of the second elastic sleeve 53, the second electrode plate 54 is contacted with the elastic ring 55, the elastic ring 55 wipes the surface of the second electrode plate 54, ablation residues are prevented from being attached to the second electrode plate 54, the steps are repeated until the ablation of the affected part of the blood vessel is completed, the inner catheter 2 is moved in the direction away from the control mechanism 1, the support 4 is contracted again, and then the outer catheter 3 and the inner catheter 2 are moved out of the blood vessel or are moved to the next affected part of the blood vessel for ablation by moving the medical guide wire.
Through the arrangement of the ablation mechanism 5, the first electrode plate 52 ablates a blood vessel ablation part, the temperature of the first electrode plate 52 rises after the first electrode plate 52 ablates for a period of time, then the second elastic sleeve 53 is moved, the second elastic sleeve 53 is sleeved on the first elastic sleeve 51, the first electrode plate 52 with higher temperature is prevented from being directly contacted with an affected part of the blood vessel, burn is avoided, meanwhile, the surface of the first electrode plate 52 can be scraped in the moving process of the second elastic sleeve 53, ablation residues are prevented from being attached to the first electrode plate 52, then the affected part of the blood vessel is ablated through the second electrode plate 54, meanwhile, the first electrode plate 52 is cooled, in the resetting process of the second electrode plate 54, the elastic ring 55 can scrape the surface of the second electrode plate 54, the ablation residues are prevented from being attached to the second electrode plate 54, the impedance is prevented from being too high, and the ablation effect is influenced; and then the cooled first electrode slice 52 is continuously ablated on the affected part of the blood vessel, and the second electrode slice 54 is cooled, so that the circulating cooling of the electrode slice is formed, and the influence of the heating of the electrode slice on the operation is reduced.
Further, the support 4 is made of a ductile material, including but not limited to a metal material and a non-metal material, preferably a metal ductile material, and the support 4 is made of a metal pipe (such as a nickel-titanium alloy pipe) by laser cutting or is formed by knitting with a metal wire warp knitting machine and then shaping by heat treatment.
Further, the first elastic sleeve 51, the second elastic sleeve 53 and the elastic ring 55 are woven from polymer fibers and are fixed to the bracket 4 by means of a fixed connection.
Further, the support 4 includes a middle cylindrical ring and two truncated conical rings respectively located at two ends of the middle cylindrical ring, the ends of the middle cylindrical ring are integrally connected with the large diameter ports of the truncated conical rings, and the small diameter ports of the two truncated conical rings are fixedly connected with the outer catheter 3 and the inner catheter 2 respectively through metal rings (the small diameter ports of the truncated conical rings can be fixed on the distal metal rings through welding modes such as laser welding, soldering, brazing and the like).
Further, the first elastic sleeve 51, the second elastic sleeve 53 and the elastic ring 55 are sleeved on the middle cylindrical ring, so that the first electrode plate 52 and the second electrode plate 54 are positioned on the middle cylindrical ring, and only radial expansion occurs, axial stretching does not occur, and the electrode plates are prevented from falling off.
As shown in fig. 3, 11 and 13, three connecting pieces 56 are disposed between the first elastic sleeve 51 and the elastic ring 55 along the circumferential direction, the connecting pieces 56 include an open slot 561 formed on the second elastic sleeve 53, an L-shaped connecting rod 562 is fixedly connected to the end portion of the first elastic sleeve 51, which is close to the second elastic sleeve 53, the connecting rod 562 is bent outwards and penetrates through the open slot 561, and the connecting rods 562 in the three connecting pieces 56 are fixedly connected with the inner circumferential surface of the elastic ring 55.
Specifically, in use, as the second elastic sleeve 53 moves, the open slot 561 on the second elastic sleeve 53 moves relative to the connecting rod 562, the connecting rod 562 slides relatively within the open slot 561, and the connecting rod 562 maintains the elastic ring 55 relatively stationary relative to the first elastic sleeve 51.
Through the setting of connecting piece 56, can support elastic ring 55 to through the setting of connecting rod 562 and open slot 561, can make elastic ring 55 keep the cover to establish on second elastic sleeve 53, conveniently scrape the second electrode piece 54 surface when returning to the second elastic sleeve 53.
As shown in fig. 3, the first electrode plate 52 and the second electrode plate 54 are arranged in a staggered manner in the radial direction, three sliding grooves 563 are uniformly formed in the first elastic sleeve 51 along the circumferential direction, the sliding grooves 563 are opposite to the second electrode plate 54, the sliding grooves 563 penetrate through the first elastic sleeve 51 in the radial direction, and the sliding grooves 563 have openings facing the second elastic sleeve 53 for the wires connected with the second electrode plate 54 to enter.
Specifically, when the second elastic sleeve 53 moves towards the first elastic sleeve 51 in use, the second elastic sleeve 53 drives the second electrode plate 54 to move, the second electrode plate 54 drives the wire connected with the second electrode plate to enter the sliding groove 563, and meanwhile, the wire presses the support 4, so that the contact part of the support 4 and the wire is deformed, and the wire smoothly enters the sliding groove 563.
By the arrangement of the sliding groove 563, the lead connected with the second electrode plate 54 can enter the sliding groove 563, so that the lead is prevented from being subjected to larger resistance when the second electrode plate 54 moves, and the movement of the second electrode plate 54 is prevented from being influenced.
As shown in fig. 5 and 11, the ablation mechanism 5 further includes a cooling tube 57, the first electrode plate 52 and the second electrode plate 54 are connected with the cooling tube 57 and a wire, the cooling tube 57 is sleeved on the wire in a gap, the end of the cooling tube 57 is fixedly connected with the electrode plate, four through holes are uniformly formed in the end of the cooling tube 57, which is close to the electrode plate, along the circumferential direction, for the coolant to flow out, and the cooling tube 57 enters the control mechanism 1 through the gap between the inner catheter 2 and the outer catheter 3.
Specifically, when the electrode plates 52 and 54 are in operation, coolant is added to the cooling tube 57 through the end of the cooling tube 57 in the control mechanism 1, and flows out through the through hole in the cooling tube 57, and the coolant flows on the electrode plates to cool the electrode plates.
By providing the cooling tube 57, the electrode sheet can be cooled, and the heat generated by the electrode sheet can be further prevented from burning the blood vessel.
Further, the coolant is preferably physiological saline.
As shown in fig. 5, 7 and 11, the ablation mechanism 5 further includes a moving member 58, the moving member 58 includes a fixing ring 581 fixedly sleeved on the inner catheter 2, the fixing ring 581 is located in the support 4, a moving ring 582 is slidably sleeved on the inner catheter 2, the moving ring 582 is located on one side of the fixing ring 581, which is close to the control mechanism 1, a spring 583 is connected between the moving ring 582 and the fixing ring 581, the spring 583 is sleeved on the inner catheter 2, three cables 584 are uniformly and fixedly connected on the moving ring 582 along the circumferential direction, three openings are uniformly formed on the support 4 along the circumferential direction, the cables 584 are fixedly connected with the second elastic sleeve 53 through the openings, a pull rope 585 is fixedly connected on the moving ring 582, and the pull rope 585 enters the control mechanism 1 through a gap between the inner catheter 2 and the outer catheter 3.
Specifically, when the bracket 4 is opened during use, the stay rope 584 is in a straightened state, and when the second elastic sleeve 53 needs to move, the end part of the stay rope 585 in the control mechanism 1 is pulled, so that the stay rope 585 drives the moving ring 582 to move towards the direction close to the control mechanism 1, meanwhile, the moving ring 582 stretches the spring 583, and the moving ring 582 drives the second elastic sleeve 53 to move through the stay rope 584; when the second elastic sleeve 53 is required to be removed from the first elastic sleeve 51, the pull rope 585 is loosened, the moving ring 582 is reset under the action of the elastic force of the spring 583, and meanwhile, the moving ring 582 drives the second elastic sleeve 53 to move away from the control mechanism 1 through the pull rope 584.
Through the arrangement of the moving piece 58, the movement of the moving ring 582 can be controlled through the pull rope 585, and meanwhile, the moving ring 582 drives the second elastic sleeve 53 to move through the pull rope 584, so that the sliding of the second elastic sleeve 53 on the first elastic sleeve 51 is controlled.
As shown in fig. 6, 8 and 12, the control mechanism 1 includes a control handle 11, the outer catheter 3 is fixedly connected with the end portion of the control handle 11, a support control member 12 is disposed in the control handle 11, the support control member 12 includes a first electromagnetic slide rail 121 fixedly connected to the control handle 11, a first electromagnetic slide block 122 is slidingly connected to the first electromagnetic slide rail 121, a feedback loop 123 is fixedly connected to the first electromagnetic slide block 122, the feedback loop 123 is sleeved on the control handle 11, two through slots 124 are symmetrically provided on the control handle 11, two connecting shafts 125 are symmetrically and fixedly connected to an inner ring surface of the feedback loop 123, the two connecting shafts 125 respectively penetrate through the through slots 124 and enter the control handle 11, a connecting block 126 is fixedly connected between adjacent ends of the two connecting shafts 125, the inner catheter 2 extends into the control handle 11, the inner catheter 2 penetrates through the connecting block 126, and the inner catheter 2 is fixedly connected with the connecting block 126.
Specifically, when in use, when the support 4 is required to be supported, the first electromagnetic slide block 122 is started, the first electromagnetic slide block 122 moves in the direction away from the ablation mechanism 5 in the first electromagnetic slide rail 121, the first electromagnetic slide block 122 drives the feedback loop 123 to move, the feedback loop 123 drives the connecting block 126 to move through the connecting shaft 125, the connecting block 126 drives the inner catheter 2 to move, and the inner catheter 2 drives the support 4 to move away from the end part of the control mechanism 1 towards the direction close to the control mechanism 1, so that the support 4 is supported.
Through setting up of support control 12, can control support 4 prop up with shrink to control the going on of ablation work, simultaneously through the position movement of feedback loop 123, make the operator can judge the support condition of support 4 through the position of feedback loop 123.
As shown in fig. 6 and 8, the control mechanism 1 further includes an alternate moving member 13, the alternate moving member 13 further includes two guide rods 131 fixedly connected to the control handle 11, a second electromagnetic slide rail 132 is fixedly connected to the bottom wall of the control handle 11, a second electromagnetic slide block 133 is slidably connected to the second electromagnetic slide rail 132, a moving block 134 is fixedly connected to the second electromagnetic slide block 133, and the pull rope 585 is fixedly connected to the moving block 134 after being guided by the two guide rods 131.
Specifically, in use, when the support 4 is supported, that is, when the inner catheter 2 moves, the second electromagnetic slide block 133 is started, and the moving ring 582 and the inner catheter 2 are kept relatively stationary along with the same direction movement of the first electromagnetic slide block 122; when the pull rope 585 needs to be moved, the second electromagnetic slide block 133 is started, so that the second electromagnetic slide block 133 slides in the second electromagnetic slide rail 132, the second electromagnetic slide block 133 moves in a direction away from the ablation mechanism 5, the second electromagnetic slide block 133 drives the moving block 134 to move, and the moving block 134 drives the pull rope 585 to move.
By providing the alternate movement means 13, the movement of the pulling cord 585 can be controlled.
Further, the electromagnetic slide rail and the electromagnetic slide block are in the prior art, and are not described in detail.
Further, the cooling tube 57 and the guide extend out of the control handle 11, and an injection joint is connected to the extending end of the cooling tube 57.
Specifically, in use, the injection fitting is placed in communication with an external coolant supply device that supplies coolant through the injection fitting into the cooling tube 57.
It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (10)
1. The utility model provides a circulative cooling type ablation device, its characterized in that includes control mechanism (1), control mechanism (1) is connected with interior pipe (2), slip cap is equipped with outer pipe (3) on interior pipe (2), the tip fixedly connected with of outer pipe (3) has support (4) of the annular structure of expansibility, support (4) keep away from one end of outer pipe (3) with interior pipe (2) fixed connection, the cover is equipped with ablation mechanism (5) on support (4), ablation mechanism (5) are including fixed cover and are established first elastic sleeve (51) on support (4), evenly be provided with at least two first electrode slices (52) along the circumferencial direction on first elastic sleeve (51), slip cap is equipped with second elastic sleeve (53) on first elastic sleeve (53) along circumferencial direction evenly be provided with two at least second electrode slices (54), second elastic sleeve (53) are located first elastic sleeve (51) control mechanism (1) are gone up the cover is equipped with elastic sleeve (55) on one side, is kept away from elastic sleeve (55) on elastic sleeve (51), the second elastic sleeve (53) can move towards the direction approaching the control mechanism (1);
the first electrode plate (52) and the second electrode plate (54) are arranged in a staggered manner in the radial direction;
Each first electrode plate (52) and each second electrode plate (54) are connected with a temperature sensor, a controller is arranged in the control mechanism (1), the temperature sensors are electrically connected with the controller, and the first electrode plates (52) and the second electrode plates (54) are electrically connected with the controller;
The inner catheter (2) and the outer catheter (3) are guided into the blood vessel of a patient through the medical guide wire, then the inner catheter (2) and the outer catheter (3) are driven to move through the medical guide wire, the inner catheter (2) and the outer catheter (3) drive the bracket (4) to move in the blood vessel, when the first electrode plate (52) moves to the affected part of the blood vessel, the movement of the medical guide wire is stopped, then the inner catheter (2) is pulled, the inner catheter (2) is enabled to move towards the direction close to the control mechanism (1), the bracket (4) is enabled to be propped up under the movement effect of the end part of the inner catheter (2), the bracket (4) drives the first elastic sleeve (51), the second elastic sleeve (53) and the elastic ring (55) to prop up, the first electrode plate (52) is enabled to drive the first electrode plate (52) to be in contact with the affected part of the blood vessel, then the first electrode plate (52) is enabled to supply power, when the temperature sensor detects that the temperature of the affected part is higher, a signal is sent to the controller, the controller stops the movement of the first electrode plate (52) towards the control mechanism (53) towards the direction close to the second elastic sleeve (53), and then the second elastic sleeve (53) is enabled to move towards the second elastic sleeve (53) towards the first elastic sleeve (53), the surface of the first electrode plate (52) is scraped, ablation residues are prevented from being attached to the first electrode plate (52), the follow-up ablation work of the first electrode plate (52) is prevented from being affected, when the second electrode plate (54) moves to an affected part of a blood vessel, the controller supplies power to the second electrode plate (54), the second electrode plate (54) continues to ablate the affected part of the blood vessel, when a temperature sensor detects that the temperature of an ablation place is higher, a signal is sent to the controller, the controller stops supplying power to the second electrode plate (54), the second elastic sleeve (53) is moved away from the first elastic sleeve (51), the second electrode plate (54) is contacted with the elastic ring (55) in the moving process of the second elastic sleeve (53), the elastic ring (55) scrapes the surface of the second electrode plate (54), the ablation residues are prevented from being attached to the second electrode plate (54), and then the steps are repeated until the affected part of the blood vessel is completely ablated.
2. The circular cooling type ablation device according to claim 1, wherein at least two connecting pieces (56) are arranged between the first elastic sleeve (51) and the elastic ring (55) along the circumferential direction, the connecting pieces (56) comprise open grooves (561) formed in the second elastic sleeve (53), an L-shaped connecting rod (562) is fixedly connected to the end portion, close to the second elastic sleeve (53), of the first elastic sleeve (51), the connecting rod (562) bends outwards to penetrate through the open grooves (561), and the connecting rod (562) in the connecting pieces (56) is fixedly connected with the inner circumferential surface of the elastic ring (55).
3. The circular cooling type ablation device according to claim 2, wherein sliding grooves (563) are uniformly formed in the first elastic sleeve (51) along the circumferential direction, the sliding grooves (563) are opposite to the second electrode plate (54), the sliding grooves (563) penetrate through the first elastic sleeve (51) in the radial direction, and the sliding grooves (563) are provided with openings facing the second elastic sleeve (53) so as to allow wires connected with the second electrode plate (54) to enter.
4. A recirculating cooling type ablation device according to claim 3, wherein the ablation mechanism (5) further comprises a cooling tube (57), the first electrode plate (52) and the second electrode plate (54) are connected with the cooling tube (57) and a conducting wire, the cooling tube (57) is sleeved on the conducting wire in a gap mode, the end portion of the cooling tube (57) is fixedly connected with the electrode plate, at least four through holes are uniformly formed in the end portion, close to the electrode plate, of the cooling tube (57) in the circumferential direction, and the cooling tube (57) is used for enabling a coolant to flow out, and enters the control mechanism (1) through gaps between the inner guide tube (2) and the outer guide tube (3).
5. The circulation cooling type ablation device according to claim 4, wherein the ablation mechanism (5) further comprises a moving member (58), the moving member (58) comprises a fixing ring (581) fixedly sleeved on the inner catheter (2), the fixing ring (581) is located in the support (4), the moving ring (582) is slidably sleeved on the inner catheter (2), the moving ring (582) is located on one side, close to the control mechanism (1), of the fixing ring (581), a spring (583) is connected between the moving ring (582) and the fixing ring (581), the spring (583) is sleeved on the inner catheter (2), three openings are uniformly formed in the circumference direction on the support (4), the guy wires (584) are fixedly connected with the second elastic sleeve (53) through the openings, the moving ring (582) is fixedly connected with the inner catheter (585), and the guy wires (585) enter the control mechanism (1) through the gaps.
6. The circulation cooling type ablation device according to claim 5, wherein the control mechanism (1) comprises a control handle (11), the outer catheter (3) is fixedly connected with the end part of the control handle (11), a support control member (12) is arranged in the control handle (11), the support control member (12) comprises a first electromagnetic slide rail (121) fixedly connected with the control handle (11), a first electromagnetic slide block (122) is slidingly connected with the first electromagnetic slide rail (121), a feedback loop (123) is fixedly connected with the first electromagnetic slide block (122), the feedback loop (123) is sleeved on the control handle (11), two through grooves (124) are symmetrically arranged on the control handle (11), two connecting shafts (125) are symmetrically and fixedly connected with the inner annular surface of the feedback loop (123), the two connecting shafts (125) penetrate through the through grooves (124) respectively and enter the control handle (11), two adjacent ends of the connecting shafts (125) are fixedly connected with a feedback loop (123), the inner catheter (126) is connected with the connecting block (126), and the inner catheter (2) is connected with the connecting block (126).
7. The circular cooling type ablation device according to claim 6, wherein the control mechanism (1) further comprises an alternate moving member (13), the alternate moving member (13) further comprises two guide rods (131) fixedly connected in the control handle (11), a second electromagnetic slide rail (132) is fixedly connected to the bottom wall of the control handle (11), a second electromagnetic slide block (133) is slidingly connected to the second electromagnetic slide rail (132), a moving block (134) is fixedly connected to the second electromagnetic slide block (133), and the pull rope (585) is fixedly connected with the moving block (134) after being guided by the two guide rods (131).
8. A recirculating cooling ablation device according to claim 7, wherein the cooling tube (57) extends out of the control handle (11), and wherein the extended end of the cooling tube (57) is connected with an injection fitting.
9. The circular cooling type ablation device according to claim 8, wherein the bracket (4) comprises a middle cylindrical ring and two truncated conical rings respectively positioned at two ends of the middle cylindrical ring, the end parts of the middle cylindrical ring are integrally connected with large diameter ports of the truncated conical rings, and the small diameter ports of the two truncated conical rings are respectively fixedly connected with the outer guide pipe (3) and the inner guide pipe (2) through metal rings.
10. The recirculating cooling ablation device according to claim 9, wherein the first elastic sleeve (51), the second elastic sleeve (53) and the elastic ring (55) are sleeved on the intermediate cylindrical ring, such that the first electrode piece (52) and the second electrode piece (54) are located on the intermediate cylindrical ring.
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