A cooling duct

Abstract

The present invention provides a cooling catheter, which belongs to the technical field of medical devices. It includes a main unit, an ablation needle, and a handpiece connected to the main unit, a detachable catheter is installed at the water outlet of the handpiece, a steam pipe is installed in the catheter, one end of the steam pipe is connected to the ablation needle, a tube head is fixedly connected to the front end of the catheter, the ablation needle is telescopically installed in the tube head, and a snare is installed on the side surface of the catheter; it also includes a conveying component for conveying cold liquid into the snare, the conveying component is connected to the handpiece; a drainage component is used to drain the liquid in the urethra, the drainage component is connected to the conveying component, and the conveying component drives the drainage component to drain when conveying cold liquid. By setting the conveying component, the present invention can not only cool the urethra when the cooling liquid circulates, but also fix the catheter inserted into the urethra to prevent the catheter from sliding in the urethra and affecting the ablation operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a cooling catheter. Background Art

[0002] Prostate thermal steam ablation is a minimally invasive treatment surgery with the advantages of less trauma, shorter duration, higher safety, and faster recovery. It includes a host, handpiece, and catheter. The guide needle structure is inserted into the prostate hyperplasia tissue through the urethra. After reaching the target area, the needle is released, and sterile liquid steam flows out of the needle and is injected into the hyperplastic tissue. The high-temperature steam gradually inactivates the hyperplastic tissue, causing it to undergo apoptosis and necrosis, and is eventually absorbed or excreted from the body.

[0003] However, since the cooling catheter ablates the hyperplastic tissue through steam when in use, and the prostate and urethra are very close, during the ablation process of the prostate hyperplastic tissue, the high-temperature steam and high-temperature liquid flow can easily cause thermal damage to the urethra, thereby causing unnecessary complications. Therefore, the present application provides a cooling catheter to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a cooling catheter to solve the problem that the existing cooling catheter ablates hyperplastic tissue through steam when in use. Since the prostate and urethra are very close, during the ablation process of prostate hyperplastic tissue, high-temperature steam and high-temperature liquid flow can easily cause thermal damage to the urethra, thereby causing unnecessary complications.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A cooling catheter comprises a main unit, an ablation needle, and a handpiece connected to the main unit, wherein a detachable catheter is installed at the water outlet end of the handpiece, a steam pipe is installed in the catheter, one end of the steam pipe is connected to the ablation needle, a tube head is fixedly connected to the front end of the catheter, the ablation needle is telescopically installed in the tube head, and a snare is installed on the side surface of the catheter; it also includes a conveying component for conveying cold liquid into the snare, the conveying component is connected to the handpiece; a drainage component is used to drain liquid in the urethra, the drainage component is connected to the conveying component, and when the conveying component conveys cold liquid, it drives the drainage component to drain.

[0007] Optionally, the conveying assembly includes a mounting frame detachably mounted on the handpiece, a cooling tube and a connecting block are fixedly connected to the side surface of the trap, the cooling tube is continuously bent to form a plurality of interconnected U-shaped flat tubes, the outer surface of the U-shaped flat tube is an elastic surface, and a socket is provided on the surface of the connecting block; a second liquid bottle is fixedly connected to the mounting frame, a spherical cavity is provided in the second liquid bottle, a conveying pump including a water inlet and a water outlet is fixedly connected in the mounting frame, a liquid outlet pipe and a liquid inlet pipe fixedly plugged with the socket are respectively fixedly connected to the water outlet and the water inlet, the liquid inlet pipe includes a second hose and a first hose fixedly connected in the spherical cavity, the second hose and the first hose are fixedly connected to a sphere at one end close to each other, and a plurality of through holes are provided on the side surface of the sphere.

[0008] Optionally, the drainage assembly includes a branch pipe fixedly connected to the water outlet, and a fixing clamp fixedly connected to the mounting frame, the branch pipe is tilted backward and fixedly connected to a first guide pipe, the first guide pipe is communicated with a first liquid bottle clamped in the fixing clamp, a second guide pipe is also fixedly connected in the first liquid bottle, the first guide pipe and the second guide pipe are both close to the top of the first liquid bottle; an inner tube is fixedly connected in the conduit, the inner tube forms an inner cavity and an outer cavity in the conduit, and the second guide pipe extends from one end away from the first liquid bottle to the outer cavity; a plurality of second guide holes are opened around the surface of the conduit, and a plurality of first guide holes are opened around the surface of the trap; a sleeve is sleeved on the inner tube, and a removable first closing plug and a second closing plug are respectively installed at both ends of the sleeve.

[0009] Optionally, the second closing plug includes a second plug body and a first plug body, the outer surfaces of the first plug body and the second plug body are both against the inner wall of the outer cavity, the second plug body and the first plug body both include an integral outer ring and an inner ring, the outer surface of the first plug body is also fixedly connected to a rubber strip, and the inner surface of the inner ring is provided with a groove; the first closing plug includes a plug cover, and an outer plug and an inner plug fixedly connected to the plug cover, the outer plug is plug-matched with the outer cavity, and the inner plug is plug-matched with the inner cavity, the plug cover is fixedly connected with the outer plug, and the outer plug is fixedly connected with a plurality of raised anti-slip rings, a placement hole penetrating the outer plug is provided on the outer surface of the first closing plug, a notch extending into the placement hole is provided on one side of the first closing plug, and racks are staggeredly arranged on the inner side wall of the notch, and a connecting pipe connected to the second guide tube is fixedly connected in the first closing plug; an annular groove plugged with the inner tube is formed between the outer plug and the inner plug, and a clamping groove is provided on the inner surface of the outer plug, and the clamping groove is clamped with a clamping block fixedly connected to one end of the sleeve.

[0010] Optionally, a cover plate located above the fixing clamp is hinged on the mounting frame, and the first liquid bottle is plugged and fixed to the cover plate.

[0011] Optionally, a fixing ring is fixedly connected to one end of the sleeve, and a plurality of first spring pieces matching the size of the groove are arranged around both ends of the fixing ring, and a second spring piece is fixedly connected to the plurality of first spring pieces; the inner ring includes an integrated shovel edge, a retaining ring and an arc edge, and the retaining ring and the arc edge cooperate to form a collecting groove, and a plurality of discharge grooves are opened around the surface of the fixing ring, and the plurality of discharge grooves are respectively aligned with the plurality of first spring pieces, and the edges of the plurality of discharge grooves are arc structures.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] In the above scheme, by setting up a delivery component, the cooling liquid can not only cool the urethra when it circulates, but also fix the catheter inserted into the urethra to prevent the catheter from sliding in the urethra and affecting the ablation operation. In addition, there are curvatures between the multiple U-shaped tubes, which can not only increase the friction effect to further improve the fixation of the catheter, but also increase the path length of the liquid flow, making it easier for the liquid to enter the outer cavity through the first inlet hole. The above structure can cool the position close to the ablation needle and reduce thermal damage.

[0014] By setting up a drainage component, negative pressure will be generated when the coolant flows through the delivery pump at a high speed. The negative pressure attracts the accumulated liquid through the second guide tube on the first liquid bottle, so that the accumulated liquid enters the first liquid bottle; by setting up a sleeve on the inner tube, it can play an isolation role, which can prevent the accumulated liquid from contaminating the inner tube, and can also play a heat insulation role, reducing the impact of the heat in the steam pipe on the catheter. The above structure can drain the high-temperature liquid flowing into the urethra, prevent it from accumulating in the urethra, affecting the surgical line of sight and damaging the urethra.

[0015] In addition, the conveying component and the drainage component are driven in coordination, and no additional structure is required for driving.

[0016] By setting the first closing plug and the second closing plug, unnecessary leakage from gaps can be reduced, which is conducive to the absorption of accumulated fluid from the urethra into the external cavity and the discharge of accumulated fluid in the external cavity into the first liquid bottle through the connecting tube and the second guide tube. By setting the first plug body and the second plug body, when the sleeve is pulled out, the first plug body and the second plug body on it can further scrape out the accumulated fluid that has not been drained clean in the external cavity. By setting a rubber strip on the outer surface of the first plug body, when the first plug body passes through the external cavity, the rubber strip on it will be inserted into the first guide hole and the second guide hole to slide in and out, further improving the cleaning effect of the plug body. Therefore, it can not only play a role in sealing the external cavity, but also further clean the external cavity when it is pulled out; by setting the first spring sheet and the second spring sheet with an elastic structure, the inner ring and the outer ring can be further expanded, which can not only improve the sealing effect, but also improve the cleaning effect of scraping the inner wall of the external cavity.

[0017] By providing the first hose, the second hose and the sphere, the sphere can always remain in the spherical cavity, thereby not affecting the flow of liquid; and when not in use, the elastic surface on the cooling tube will allow the coolant in the cooling tube to enter the spherical cavity due to the elastic effect, and the excess gas will be discharged through the air holes, thereby restoring the cooling tube to the default state, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the cooling duct;

[0020] Figure 2 for Figure 1 The enlarged structural diagram of part A in the middle;

[0021] Figure 3 It is a schematic diagram of the duct in the cooling duct;

[0022] Figure 4 is a schematic cross-sectional view of a cooling pipe in a cooling duct;

[0023] Figure 5 for Figure 3 The enlarged structural diagram of part B in the middle;

[0024] Figure 6 is a cross-sectional schematic diagram of the first liquid bottle in the cooling conduit;

[0025] Figure 7 is a cross-sectional schematic diagram of the second liquid bottle in the cooling conduit;

[0026] Figure 8 A schematic diagram of a first closing plug and a second closing plug in a cooling duct;

[0027] Fig. 9 It is a schematic cross-sectional view of the collecting cavity in the cooling duct;

[0028] Fig.10 for Fig. 9 The enlarged structural diagram of the middle C part;

[0029] Fig.11 A schematic diagram of an elastic support sheet in a cooling duct;

[0030] Fig.12 It is a cross-sectional schematic diagram of the installation cover in the cooling duct;

[0031] Fig.13 It is a schematic cross-sectional view of the second closing plug in the cooling duct.

[0032] [Reference Signs]

[0033] 1. Handpiece; 2. Catheter; 3. Head; 4. Snares; 5. Cooling pipe; 6. First lead hole; 7. Second lead hole; 8. Elastic surface; 9. Water inlet; 10. Water outlet; 11. Branch pipe; 12. First lead pipe; 13. Second lead pipe; 14. Fixing clamp; 15. First liquid bottle; 16. Mounting frame; 17. Cover plate; 19. Connecting block; 20. Liquid inlet pipe; 21. Liquid outlet pipe; 22. Second liquid bottle; 23. First hose; 24. Second hose; 25. Spherical cavity; 26. Sphere; 27. Through hole; 28. Inner cavity; 29. ​​Outer cavity; 30. Steam pipe; 3 2. First closing plug; 33. Connecting tube; 34. Notch; 35. Rack; 36. Placement hole; 37. Outer plug; 38. Anti-skid ring; 39. First plug body; 40. Second plug body; 41. Second closing plug; 42. Outer ring; 43. Inner ring; 44. Groove; 45. Shovel edge; 46. Retaining ring; 47. Collecting groove; 48. Arc edge; 49. First spring piece; 50. Second spring piece; 51. Fixed ring; 52. Sleeve; 53. Discharge groove; 54. Plug cover; 55. Inner plug; 57. Slot; 58. Ring groove; 59. Block; 60. Inner tube; 61. Placement groove.

[0034] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0035] The following is a detailed description of a cooling duct provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0036] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0037] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0038] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0039] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0040] like Figure 1 and Fig. 9 As shown, an embodiment of the present invention provides a cooling catheter, comprising a main unit, an ablation needle, and a handpiece 1 connected to the main unit, a detachable catheter 2 is installed at the water outlet end of the handpiece 1, a steam pipe 30 is installed in the catheter 2, one end of the steam pipe 30 is connected to the ablation needle, a tube head 3 is fixedly connected to the front end of the catheter 2, the ablation needle is telescopically installed in the tube head 3, and a snare 4 is installed on the side of the catheter 2;

[0041] It also includes a delivery component for delivering cold liquid into the snare 4, the delivery component is connected to the handpiece 1; a drainage component for draining liquid in the urethra, the drainage component is connected to the delivery component, and the delivery component drives the drainage component to drain when delivering cold liquid.

[0042] like Figure 3 , Figure 5 and Fig. 9As shown, the delivery assembly includes a mounting frame 16 that can be detachably mounted on the handpiece 1, a cooling tube 5 and a connecting block 19 are fixedly connected to the side of the snare 4, the snare 4 is made of elastic material, such as rubber, and a plug hole is provided on the surface of the connecting block 19. The cooling tube 5 is continuously bent to form a plurality of interconnected U-shaped flat tubes, and the outer surface of the U-shaped flat tube is an elastic surface 8. In the default state, the cooling tube 5 is a U-shaped flat tube. When the coolant passes through the cooling tube 5, the cooling tube 5 is stretched open, so that the cooling tube 5 is in contact with the urethra. When the coolant circulates, the urethra is cooled, and the diameter of the stretched cooling tube 5 is large. The cooling tube 5 is larger than the diameter of the catheter 2, so on the basis of cooling the urethra, it can also fix the catheter 2 inserted into the urethra to prevent the catheter 2 from sliding in the urethra and affecting the ablation operation; in addition, there are curvatures between the multiple U-shaped tubes, which can not only increase the friction effect to further improve the fixation of the catheter 2, but also conveniently increase the path length of the liquid flow, thereby facilitating the liquid to enter the outer cavity 29 through the first inlet hole 6. The above structure realizes cooling of the position close to the ablation needle and reduces thermal damage, while playing a fixing role to prevent the catheter 2 from sliding in the urethra and affecting the ablation operation.

[0043] like Figure 2 , Figure 6 and Figure 7 As shown, a second liquid bottle 22 is fixedly connected to the mounting frame 16, a spherical cavity 25 is provided in the second liquid bottle 22, a delivery pump including a water inlet 9 and a water outlet 10 is fixedly connected in the mounting frame 16, the delivery pump is a prior art, and a specific model can be selected according to actual needs, the water outlet 10 and the water inlet 9 are respectively fixedly connected with a liquid outlet pipe 21 and a liquid inlet pipe 20 fixedly plugged with the jack, the liquid inlet pipe 20 includes a second hose 24 and a first hose 23 fixedly connected in the spherical cavity 25, the second hose 24 and the first hose 23 are both fixedly connected at one end thereof with a sphere 26, a plurality of through holes 27 are provided on the side surface of the sphere 26, and since the first hose 23 and the second hose 24 are made of soft materials, the sphere 26 The weight of the sphere 26 is greater than the strength of the hose itself, and the weight of the sphere 26 pulls the hose into the coolant in the second liquid bottle 22. Therefore, when the handpiece 1 is tilted, the liquid in the spherical cavity 25 and the sphere 26 will tilt in the spherical cavity 25, so that the sphere 26 always remains in the spherical cavity 25, thereby not affecting the flow of the liquid; and the second liquid bottle 22 is provided with an air hole for exhausting air and storing coolant. When the coolant stops being transported, the coolant loses fluidity. At this time, the elastic surface 8 on the cooling tube 5 will, due to the elastic effect, push the coolant in the cooling tube 5 into the spherical cavity 25, and the excess gas will be discharged along the air hole, thereby restoring the cooling tube 5 to the default state, improving the convenience effect, and facilitating the operation of medical staff.

[0044] like Figure 2 , Figure 6 and Figure 7 as well as Fig.13As shown, the drainage assembly includes a branch pipe 11 fixedly connected to the water outlet 10, and a fixing clamp 14 fixedly connected to the mounting frame 16, the fixing clamp 14 facilitates the installation and removal of the first liquid bottle 15, the branch pipe 11 is tilted backward and fixedly connected with the first guide pipe 12, the first guide pipe 12 is communicated with the first liquid bottle 15 clamped in the fixing clamp 14, and the first liquid bottle 15 is also fixedly connected with the second guide pipe 13; the catheter 2 is fixedly connected with an inner tube 60, the inner tube 60 forms an inner cavity 28 and an outer cavity 29 in the catheter 2, and the end of the second guide pipe 13 away from the first liquid bottle 15 extends into the outer cavity 29; a plurality of second guide holes 7 are opened around the surface of the catheter 2, and a plurality of first guide holes 6 are opened around the surface of the snare 4. Since the branch pipe 11 is connected to the water outlet 10, one end of the first guide pipe 12 is inserted into the first liquid bottle 15, and the first guide pipe 13 is fixedly connected to the first liquid bottle 15. The other end of 12 is connected to the branch pipe 11, and the outer end of the second lead pipe 13 in the first liquid bottle 15 is connected to the connecting pipe 33, wherein the lengths of the first lead pipe 12 and the second lead pipe 13 extending into the first liquid bottle 15 are close to the bottle mouth, so when the coolant flows at a high speed through the delivery pump, negative pressure will be generated. Since the branch pipe 11 is connected to the water outlet 10, the negative pressure attracts the accumulated liquid through the second lead pipe 13 on the first liquid bottle 15, so that the accumulated liquid enters the first liquid bottle 15; a sleeve 52 is sleeved on the inner tube 60, and the sleeve 52 is sleeved on the inner tube 60 to play an isolation role, which can prevent the accumulated liquid from contaminating the inner tube 60 and play a heat insulation role, reducing the influence of the heat in the steam pipe 30 on the catheter 2, and assisting the cooling effect. The above structure realizes the drainage of the high-temperature liquid flowing into the urethra, preventing it from accumulating in the urethra and affecting the surgical line of sight and damaging the urethra.

[0045] like Figure 8 and Fig.12 As shown, the two ends of the sleeve 52 are respectively installed with a detachable first sealing plug 32 and a second sealing plug 41, and the first sealing plug 32 and the second sealing plug 41 are both made of rubber. Since the first sealing plug 32 and the second sealing plug 41 are respectively located at the two ends of the sleeve 52, unnecessary gap leakage can be reduced, which is conducive to the absorption of accumulated fluid from the urethra into the outer cavity 29 and the discharge of accumulated fluid in the outer cavity 29 into the first liquid bottle 15 through the connecting tube 33 and the second guide tube 13. The conveying component and the drainage component are driven in coordination, and no additional structure is required to drive them.

[0046] like Fig. 9 , Fig.10 and Fig.13As shown, the second closing plug 41 includes a second plug body 40 and a first plug body 39, and the second plug body 40 and the first plug body 39 both include an outer ring 42 and an inner ring 43 that are integrated. A rubber strip is also fixedly connected to the outer surface of the first plug body 39, and a groove 44 is provided on the inner surface of the inner ring 43; the first closing plug 32 includes a plug cover 54, and an outer plug 37 and an inner plug 55 fixedly connected to the plug cover 54, the plug cover 54 is fixedly connected to the outer plug 37, and the outer plug 37 is fixedly connected to a plurality of raised anti-slip rings 38, a placement hole 36 penetrating the outer plug 37 is provided on the outer surface of the first closing plug 32, a notch 34 extending into the placement hole 36 is provided on one side of the first closing plug 32, and racks 35 are staggeredly arranged on the inner side wall of the notch 34, the outer plug 37 is plugged into and matched with the outer cavity 29, and the inner plug 55 is plugged into and matched with the inner cavity 28, and by providing the notch 34 on the first closing plug 32, it is convenient to insert the steam pipe 3 0 passes through the slot 34 and is inserted into the placement hole 36; since the slot 34 is staggered with racks 35 relative to the inner side wall, and the shapes of the racks 35 are matched, when the first closing plug 32 is inserted into the catheter 2, the slot of the first closing plug 32 is fitted at the same time, and the staggered racks 35 are fitted in shape at this time, so as to improve the sealing effect, and a connecting pipe 33 connected to the second guide tube 13 is fixedly connected in the first closing plug 32; the outer surfaces of the first plug body 39 and the second plug body 40 are both against the inner wall of the outer cavity 29, and an annular groove 58 is formed between the outer plug 37 and the inner plug 55, which is plugged with the inner tube 60, and a card groove 57 is provided on the inner surface of the outer plug 37, and the card groove 57 is carded with a card block 59 fixedly connected to one end of the sleeve 52, and by setting the card block 59 and the card groove 57, wherein the card block 59 and the card groove 57 are adapted to the arc shape, it is convenient for the first closing plug 32 to be stably fixed on the catheter 2 as a whole.

[0047] like Figure 6 As shown, a cover plate 17 located above the fixing clamp 14 is hingedly connected to the mounting frame 16 , and the first liquid bottle 15 is plugged and fixed to the cover plate 17 .

[0048] like Fig. 9 , Fig.10 and Fig.11As shown, one end of the sleeve 52 is fixedly connected to a fixing ring 51, and both ends of the fixing ring 51 are surrounded by a plurality of first elastic pieces 49 that match the size of the groove 44, and a second elastic piece 50 is fixedly connected to the plurality of first elastic pieces 49; the inner ring 43 includes an integrated shovel edge 45, a retaining ring 46 and an arcuate edge 48, and the retaining ring 46 and the arcuate edge 48 cooperate to form a collecting groove 47, wherein the retaining ring 46 has a triangular cross-section, and the retaining ring 46 is located between the collecting grooves 47. When the sleeve 52 is taken out, the first plug body 39 and the second plug body 40 on the sleeve 52 are both in line with the shape of the inner wall of the outer cavity 29, and the residual accumulated liquid on the inner wall of the outer cavity 29 can be shoveled up by the shovel edge 45, and the retaining ring 46 is located between the collecting grooves 47. The accumulated liquid slides into the collecting groove 47 through the triangular retaining ring 46. Since a rubber strip is provided on the outer surface of the first plug body 39, when the first plug body 39 passes through the outer cavity 29, the rubber strip thereon will be inserted into the first inlet hole 6 and the second inlet hole 7 and slide in and out. In this process, the purpose of cleaning the first inlet hole 6 and the second inlet hole 7 is achieved, and the accumulated liquid is further facilitated to be introduced into the first liquid bottle 15. By providing a first spring piece 49 and a second spring piece 50 with an elastic structure, wherein the first spring piece 49 and the shovel edge 45 are matched in shape, and the second spring piece 50 and the collecting groove 47 and the arc-shaped edge 48 are fitted in shape, the elastic piece further expands the inner ring 43 and the outer ring 42, which can not only improve the sealing effect, but also improve the cleaning effect of scraping out the inner wall of the outer cavity 29.

[0049] like Fig.11 As shown, a plurality of discharge grooves 53 are formed around the surface of the fixing ring 51 , and the plurality of discharge grooves 53 are respectively aligned with the plurality of first elastic sheets 49 , and the edges of the plurality of discharge grooves 53 are arc structures.

[0050] The working principle provided by the present invention is that a conveying component is set, and the cooling tube 5 in the conveying component is continuously bent to form a plurality of interconnected U-shaped flat tubes, and the outer surface of the U-shaped flat tube is an elastic surface 8. Since the cooling tube 5 is a U-shaped flat tube in the default state, when the cooling liquid passes through the cooling tube 5, the cooling tube 5 will be stretched open, so that the cooling tube 5 and the urethra are in contact, and the cooling liquid circulates to achieve the effect of cooling the urethra, and the diameter of the stretched cooling tube 5 is larger than the diameter of the catheter 2. Therefore, on the basis of the cooling tube 5 to achieve urethra cooling, it can also play a fixing role on the catheter 2 inserted into the urethra to prevent the catheter 2 from sliding in the urethra and affecting the ablation operation. In addition, there are curvatures between the multiple U-shaped tubes, which can not only increase the friction effect to further improve the fixation of the catheter 2, but also conveniently increase the path length of the liquid flow, thereby facilitating the liquid to enter the outer cavity 29 through the first lead hole 6. Therefore, the position close to the ablation needle can be cooled to reduce thermal damage, and at the same time play a fixing role to prevent the catheter 2 from sliding in the urethra and affecting the ablation operation.

[0051] By setting the first hose, the second hose and the first liquid bottle, since the first hose 23 and the second hose 24 are made of soft materials, the weight of the sphere 26 is greater than the strength of the hose itself, and the weight of the sphere 26 pulls the hose into the coolant in the second liquid bottle 22. When the handpiece 1 is tilted, the liquid in the spherical cavity 25 and the sphere 26 will tilt in the spherical cavity 25, so that the sphere 26 always remains in the spherical cavity 25, thereby not affecting the flow of liquid; and the second liquid bottle 22 is provided with an air hole for exhausting air and placing coolant. When the coolant stops being transported, the coolant loses fluidity. At this time, the elastic surface 8 on the cooling tube 5 will, due to the elastic effect, push the coolant in the cooling tube 5 into the spherical cavity 25, and the excess gas will be discharged along the air hole, thereby restoring the cooling tube 5 to the default state.

[0052] By setting up the drainage component, when the coolant flows at a high speed through the delivery pump, negative pressure will be generated. Since the branch pipe 11 is connected to the water outlet 10, the negative pressure attracts the accumulated liquid through the second guide pipe 13 on the first liquid bottle 15, so that the accumulated liquid enters the first liquid bottle 15; a sleeve 52 is sleeved on the inner tube 60, and the sleeve 52 is sleeved on the inner tube 60 to play an isolation role, which can prevent the accumulated liquid from contaminating the inner tube 60, and can also play a heat insulation role, reduce the influence of the heat in the steam pipe 30 on the catheter 2, and assist the cooling effect. Therefore, the high-temperature liquid flowing into the urethra can be drained to prevent it from accumulating in the urethra and affecting the surgical line of sight and damaging the urethra.

[0053] By providing the first sealing plug 32 and the second sealing plug 41, unnecessary gap leakage can be reduced, which is conducive to the absorption of accumulated fluid from the urethra into the external cavity and the discharge of accumulated fluid in the external cavity into the first liquid bottle 15 through the connecting tube 33 and the second guide tube 13. By providing the first plug body and the second plug body, when the sleeve is pulled out, the first plug body 39 and the second plug body 40 thereon can further scrape out the accumulated fluid that has not been drained cleanly in the external cavity 29.

[0054] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cooling conduit, characterized in that: It includes a main unit, an ablation needle, and a handpiece connected to the main unit, wherein a detachable catheter is installed at the water outlet of the handpiece, a steam pipe is installed in the catheter, one end of the steam pipe is connected to the ablation needle, a tube head is fixedly connected to the front end of the catheter, the ablation needle is telescopically installed in the tube head, and a snare is installed on the side surface of the catheter; Also included is a delivery assembly for delivering cold liquid into the snare, the delivery assembly being connected to the handpiece; A drainage component is used to drain the liquid in the urethra. The drainage component is connected to the delivery component. When the delivery component delivers cold liquid, it drives the drainage component to drain; The conveying assembly comprises a mounting frame detachably mounted on the handpiece, a cooling tube and a connecting block are fixedly connected to the peripheral side of the snare, the cooling tube is continuously bent to form a plurality of interconnected U-shaped flat tubes, the outer surface of the U-shaped flat tube is an elastic surface, and a plug hole is provided on the surface of the connecting block; A second liquid bottle is fixedly connected to the mounting frame, a spherical cavity is provided in the second liquid bottle, a delivery pump including a water inlet and a water outlet is fixedly connected in the mounting frame, a liquid outlet pipe and a liquid inlet pipe fixedly connected to the jack are respectively fixedly connected in the water outlet and the water inlet, the liquid inlet pipe includes a second hose and a first hose fixedly connected in the spherical cavity, a sphere is fixedly connected to one end of the second hose and the first hose, and a plurality of through holes are provided on the side surface of the sphere.

2. The cooling conduit according to claim 1, characterized in that: The drainage assembly includes a branch pipe fixedly connected to the water outlet, and a fixing clamp fixedly connected to the mounting frame, the branch pipe is tilted backward and fixedly connected to a first guide pipe, the first guide pipe is connected to a first liquid bottle clamped in the fixing clamp, and a second guide pipe is also fixedly connected in the first liquid bottle; An inner tube is fixedly connected to the catheter, and the inner tube forms an inner cavity and an outer cavity in the catheter, and an end of the second guide tube away from the first liquid bottle extends into the outer cavity; The surface of the catheter is surrounded by a plurality of second lead holes, and the surface of the snare is surrounded by a plurality of first lead holes; The inner tube is sleeved with a sleeve, and both ends of the sleeve are respectively installed with a detachable first closing plug and a second closing plug.

3. The cooling conduit according to claim 2, characterized in that: The second sealing plug comprises a second plug body and a first plug body, wherein the second plug body and the first plug body each comprise an integral outer ring and an inner ring, a rubber strip is fixedly connected to the outer surface of the first plug body, and a groove is provided on the inner surface of the inner ring; The first closing plug includes a plug cover, and an outer plug and an inner plug fixedly connected to the plug cover, the plug cover is fixedly connected to the outer plug, the outer plug is fixedly connected to a plurality of raised anti-slip rings, a placement hole penetrating the outer plug is provided on the outer surface of the first closing plug, a notch extending into the placement hole is provided on one side of the first closing plug, racks are staggeredly arranged on the inner side wall of the notch, and a connecting tube connected to the second guide tube is fixedly connected inside the first closing plug; An annular groove for plugging with the inner tube is formed between the outer plug and the inner plug, and a clamping groove is provided on the inner surface of the outer plug, and the clamping groove is clamped with a clamping block fixedly connected to one end of the sleeve.

4. The cooling conduit according to claim 2, characterized in that: A cover plate located above the fixing clamp is hinged on the mounting frame, and the first liquid bottle is plugged and fixed to the cover plate.

5. The cooling conduit according to claim 3, characterized in that: A fixing ring is fixedly connected to one end of the sleeve, and a plurality of first elastic pieces matching the size of the groove are arranged around both ends of the fixing ring, and a second elastic piece is fixedly connected to each of the plurality of first elastic pieces; The inner ring comprises an integrated shovel edge, a retaining ring and an arcuate edge, and the retaining ring and the arcuate edge cooperate to form a collecting groove.

6. The cooling conduit according to claim 3, characterized in that: The outer plug is plugged into the outer cavity, and the inner plug is plugged into the inner cavity.

7. The cooling conduit according to claim 3, characterized in that: The outer surfaces of the first plug body and the second plug body are both against the inner wall of the outer cavity.

8. The cooling conduit according to claim 5, characterized in that: A plurality of discharge grooves are formed around the surface of the fixing ring, the plurality of discharge grooves are respectively aligned with the plurality of first elastic sheets, and the edges of the plurality of discharge grooves are arc structures.

9. The cooling conduit according to claim 2, characterized in that: The first guide tube and the second guide tube are both close to the upper part of the first liquid bottle.

Images