Cooling and calculus-removing mesh basket for broken stones
By designing a gravel cooling stone net basket, using a liquid circulation system and a cooling host, the problem of local high temperature in the laser gravel process is solved, and the rapid cooling and safe gravel stone extraction process is achieved.
Patent Information
- Application Number
- CN202420349631.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-02-26
AI Technical Summary
During laser lithotripsy, local high temperatures may lead to ureteral stenosis or atresia and loss of renal function, and it is difficult for the prior art to effectively cool down and remove high-temperature steam and liquids.
Design a gravel cooling stone net basket, including an outer sheath tube and a slidable inner tube. The inner tube is connected to the stone net and connected to the liquid extraction channel and the cooling host to form a liquid circulation system, inject coolant through the inner tube and extract it and replace it. Hot liquid, the cooling host provides circulating coolant to control the temperature.
It achieves rapid cooling of local high temperatures during laser or electrode gravel, reduces adverse effects on body tissues, and improves the safety of gravel stone extraction process.
Smart Images
Figure CN222303972U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithotripsy medical equipment, in particular to a lithotripsy cooling and stone-taking net basket. Background Art
[0002] Stones in the human body are often found in the gallbladder and urinary system. Common methods of clinical lithotripsy are laser lithotripsy and electrohydraulic lithotripsy. Laser lithotripsy breaks stones by burning them at high temperatures instantly. The result of its energy conversion is thermal energy, and the core temperature exceeds 4700°C. The principle of electrohydraulic lithotripsy is to use the principle of high-voltage oscillation waves generated by piezoelectricity to energize the positive and negative electrodes in a liquid environment to induce a high voltage between the two electrodes. When the voltage difference between the two electrodes exceeds the resistance of the insulating layer, sparks and shock waves are generated between the electrodes. The shock waves cause the water to vibrate in a short period of time to produce tiny bubbles, which act on the stones to achieve the purpose of stone crushing.
[0003] Thermal laser lithotripsy is the most common lithotripsy method for urinary stones and is widely used clinically. During the lithotripsy process, local instantaneous high temperatures are encountered. A part of the laser pulse energy causes the injected water to vaporize instantly and directly burn the ureter or kidney tissue, leading to ureteral stenosis / occlusion and loss of renal function. Therefore, during the lithotripsy and stone removal process, it is necessary to cool down in time to avoid continued high temperature and damage to human tissues, and the high-temperature steam and liquid must be able to be extracted from the body in time. Summary of the invention
[0004] The utility model aims to provide a stone crushing, cooling and stone taking net basket in view of the problems existing in the prior art.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A stone crushing and cooling stone retrieval net basket comprises an outer sheath tube, a slidable inner tube is provided inside the outer sheath tube, one end of the inner tube is connected to a stone retrieval net and can extend from the end of the outer sheath tube, the other end of the outer sheath tube is connected to an adapter, the adapter is connected to a hand pliers assembly, the other end of the inner tube passes through the adapter and is connected to the hand pliers assembly; a liquid extraction channel is provided inside the outer sheath tube, one end of the liquid extraction channel close to the adapter is connected to a liquid extraction hose, the other end of the liquid extraction channel passes through the end of the outer sheath tube, the inner tube is provided with a liquid inlet hose located at the hand pliers assembly, and both the liquid extraction hose and the liquid inlet hose are connected to a cooling host.
[0007] The lithotripsy and cooling stone removal net basket can form a liquid circulation system in the outer sheath tube and the inner tube by improving the outer sheath tube and the inner tube. The stone removal net at the end of the inner tube can be quickly and / or continuously cooled, thereby reducing the adverse effects of local high temperature generated during laser or electrode lithotripsy on body tissues and improving the safety of the lithotripsy process.
[0008] On the one hand, the inner tube is used as a component connected to the stone removal net, and can control the stone removal net to extend or retract into the outer sheath tube. On the other hand, the internal channel of the inner tube can be used as a liquid channel, and the inner tube can be used to inject liquid medicine, cooling liquid, etc. to the end where the stone removal net is located to assist in stone crushing and stone removal. The setting of the liquid inlet hose can allow cooling liquid to pass into the inner tube, and the cooling liquid can usually be water; other hoses or branch joints can be connected to the inner tube separately to facilitate liquid medicine injection.
[0009] The setting of the outer sheath tube, on the one hand, can protect the inner tube and facilitate the introduction of the entire pipeline into the human body to reach the lesion location; on the other hand, the liquid extraction channel set therein can be used to extract the cooling liquid that enters the vicinity of the stone removal net, and bring out the liquid after heat exchange, thereby achieving the purpose of local cooling; during the injection of the drug solution, the liquid extraction function can be turned off to avoid affecting the effect of the drug solution.
[0010] The setting of the adapter can be connected to both the outer sheath tube and the hand forceps assembly. The hand forceps assembly can be used to control the movement of the outer sheath tube and the inner tube, making it convenient for medical staff to perform stone removal operations.
[0011] Furthermore, the liquid extraction channel includes an annular channel arranged near the end, and a plurality of axial channels connected to the annular channel; the annular channel is connected to the liquid extraction hose, and the plurality of axial channels are symmetrically arranged around the central axis of the outer sheath tube.
[0012] Furthermore, the axial channels are elliptical channels arranged at intervals or fan-shaped channels arranged adjacently, and the sum of the cross-sectional areas of several of the axial channels is not less than the cross-sectional area of the inner tube to ensure that the cooling liquid introduced can be completely extracted to avoid excessive liquid accumulation at the lesion.
[0013] Furthermore, the outer sheath tube is provided with a trumpet structure at the end where the stone removal net is located, and a fine-pore filter is provided at the end of the liquid extraction channel to prevent gravel from being sucked into the liquid extraction channel, so as to avoid blockage of a single narrow axial channel.
[0014] Furthermore, the adapter has a small head end and a large head end, the small head end is connected to the outer sheath tube by screwing, clamping or welding, the large head end is connected to the pliers assembly by screwing, clamping or welding, and a channel is provided between the large head end and the small head end for the inner tube to pass through.
[0015] Furthermore, a plurality of guide grooves are provided on the inner periphery of the inner tube, and a plurality of limiting slip rings are provided between the outer periphery of the inner tube and the inner periphery of the outer sheath tube.
[0016] Furthermore, the pliers assembly includes a pliers rod body connected to the adapter, a pair of first handle rings are provided on the pliers rod body, a second handle ring is provided at one end of the pliers rod body away from the adapter, and a ring seat of the second handle ring is connected to the inner tube extending from the pliers rod body.
[0017] Furthermore, a through groove is provided on the outer circumference of the pliers rod body along the length direction, and the liquid inlet hose is connected to the inner tube at the through groove.
[0018] Furthermore, a circulating coolant is provided in the cooling host, and the temperature of the circulating coolant pumped into the liquid inlet hose is controlled above a safety threshold temperature, the safety threshold temperature range is 0 to 10 degrees Celsius, preferably 5 degrees Celsius.
[0019] Compared with the prior art, the utility model has the following beneficial effects: 1. The lithotripsy cooling stone-removing net basket can form a liquid circulation system in the outer sheath tube and the inner tube by improving the outer sheath tube and the inner tube, and can quickly and / or continuously cool the stone-removing net at the end of the inner tube, thereby reducing the adverse effects of local high temperature generated during laser or electrode lithotripsy on body tissues and improving the safety of the lithotripsy process; 2. On the one hand, the inner tube, as a component connecting the stone-removing net, can control the stone-removing net to extend or retract into the outer sheath tube, and on the other hand, the internal channel of the inner tube can be used as a liquid channel, and the inner tube can be used to inject liquid medicine, coolant, etc. to the end where the stone-removing net is located to assist in lithotripsy and stone-removing; 3. The setting of the outer sheath tube can protect the inner tube and facilitate the introduction of the entire pipeline into the human body to reach the lesion location; the liquid extraction channel set therein can also be used to extract the cooling liquid that has passed into the vicinity of the stone-removing net, and bring out the liquid after heat exchange, thereby achieving the purpose of local cooling. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the overall structure of a stone crushing, cooling and stone taking net basket of the utility model;
[0021] Figure 2 It is a partial structural schematic diagram of the end where the stone taking net of a stone crushing and cooling stone taking net basket of the utility model is located;
[0022] Figure 3 The cross-sectional structure of the outer sheath tube of the stone crushing and cooling stone extraction net basket of the utility model is shown in FIG. Figure 1 ;
[0023] Figure 4 The cross-sectional structure of the outer sheath tube of the stone crushing and cooling stone extraction net basket of the utility model is shown in FIG. Figure 2 ;
[0024] Figure 5It is another cross-sectional structural schematic diagram of the outer sheath tube of a stone crushing and cooling stone taking net basket of the utility model;
[0025] Figure 6 for Figure 1 The enlarged structural diagram at A in the middle;
[0026] Figure 7 This is a schematic diagram of another connection position of the liquid inlet hose of the utility model;
[0027] In the figure: 1. outer sheath; 2. inner tube; 3. stone removal net; 4. adapter; 401. large head end; 402. small head end; 5. liquid extraction channel; 501. annular channel; 502. axial channel; 6. liquid extraction hose; 7. liquid inlet hose; 8. cooling main unit; 9. bell-mouth structure; 10. fine-pore filter; 11. hand pliers rod; 12. first handle ring; 13. second handle ring; 14. through groove. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0030] like Figure 1 , Figure 2 and Figure 6As shown, a stone crushing and cooling stone removal net basket comprises an outer sheath tube 1, a slidable inner tube 2 is provided inside the outer sheath tube 1, one end of the inner tube 2 is connected to a stone removal net 3 and can be extended from the end of the outer sheath tube 1, the other end of the outer sheath tube 1 is connected to an adapter 4, the adapter 4 is connected to a hand clamp assembly, the other end of the inner tube 2 passes through the adapter 4 and is connected to the hand clamp assembly; a liquid extraction channel 5 is provided inside the outer sheath tube 1, one end of the liquid extraction channel 5 close to the adapter 4 is connected to a liquid extraction hose 6, the other end of the liquid extraction channel 6 passes through the end of the outer sheath tube 1, the inner tube 2 is located at the hand clamp assembly and is provided with a liquid inlet hose 7, the liquid extraction hose 6 and the liquid inlet hose 7 are both connected to a cooling host 8.
[0031] The lithotripsy and cooling stone removal net basket improves the outer sheath 1 and the inner tube 2 to form a liquid circulation system therein, and can quickly and / or continuously cool the stone removal net 3 at the end of the inner tube, thereby reducing the adverse effects of local high temperature generated during laser or electrode lithotripsy on body tissues and improving the safety of the lithotripsy process.
[0032] On the one hand, the inner tube 2 is used as a component for connecting the stone removal net, and can control the stone removal net to extend or retract into the outer sheath tube. On the other hand, the internal channel of the inner tube 2 can be used as a liquid channel, and the inner tube 2 can be used to inject liquid medicine, cooling liquid, etc. to the end where the stone removal net is located to assist in stone crushing and stone removal. The setting of the liquid inlet hose 7 allows cooling liquid to pass into the inner tube 2, and the cooling liquid can usually be water; other hoses or branch joints can be connected to the inner tube separately to facilitate liquid medicine injection.
[0033] The setting of the outer sheath 1, on the one hand, can protect the inner tube 2, making it convenient to introduce the entire pipeline into the human body to reach the lesion location; on the other hand, the liquid extraction channel 5 set therein can be used to extract the cooling liquid that has entered the vicinity of the stone removal net, and bring out the liquid after heat exchange, thereby achieving the purpose of local cooling; during the injection of the drug solution, the liquid extraction function can be turned off to avoid affecting the effect of the drug solution.
[0034] The liquid extraction hose 6 is connected at the outer end to facilitate connection with the cooling host 8. The cooling host can provide low-temperature liquid and form a circulating cooling system. The cooling host can directly select mature products available on the market.
[0035] The setting of the adapter 4 can be connected to the outer sheath tube 1 and the hand forceps assembly respectively. The hand forceps assembly can be used to control the movement of the outer sheath tube 1 and the movement of the inner tube 2, which is convenient for medical staff to perform stone removal operations.
[0036] Further, combined with Figure 3As shown, the liquid extraction channel 5 includes an annular channel 501 arranged near the end, and a plurality of axial channels 502 connected to the annular channel 501; the annular channel 501 is connected to the liquid extraction hose 6, and the plurality of axial channels 502 are symmetrically arranged around the central axis of the outer sheath tube 1.
[0037] The plurality of axial channels 502 are similar to branch channels and can simultaneously extract liquid, which is finally collected by the annular channel 501 and extracted from the liquid extraction hose 6. Such a configuration is convenient for extracting liquid and can also maintain the shape of the outer sheath tube 1 to prevent its inner circumference from being too loose.
[0038] Further, such as Figure 4 and Figure 5 As shown, the axial channels 502 are elliptical channels arranged at intervals or fan-shaped channels arranged adjacent to each other. The structure between adjacent channels has a certain supporting effect in the radial direction. The sum of the cross-sectional areas of all the axial channels 502 is not less than the cross-sectional area of the inner tube 2 to ensure that the cooling liquid introduced can be completely extracted to avoid excessive liquid accumulation at the lesion.
[0039] In some embodiments, the outer sheath tube 1 is provided with a trumpet structure 9 at the end where the stone removal net 3 is located to facilitate the absorption of liquid; and a fine-pore filter screen 10 is provided at the end of the liquid extraction channel 5 to filter some gravel and avoid sucking the gravel into the liquid extraction channel or even the cooling main unit, so as to avoid blockage of a single narrow axial channel.
[0040] Furthermore, the adapter 4 has a small head end 402 and a large head end 401, the small head end 402 is connected to the outer sheath tube 1 by screwing, clamping or welding, the large head end 401 is connected to the hand forceps assembly by screwing, clamping or welding, and a channel for the inner tube 2 to pass through is provided between the large head end 401 and the small head end 402.
[0041] Normally, the outer sheath 1 has a smaller diameter, while the pliers assembly has a larger diameter for the convenience of the operator to hold it. The adapter 4 with this structure can connect the two well without affecting the use of both. The outer sheath and the pliers assembly can be disassembled to facilitate replacement of parts and cleaning.
[0042] Furthermore, the inner circumference of the inner tube 2 is provided with a plurality of guide grooves, which have a guiding function and facilitate the flow of liquid to the inner end; a plurality of limiting slip rings are also provided between the outer circumference of the inner tube 2 and the inner circumference of the outer sheath tube 1, which have a limiting and guiding function and do not affect the relative movement between the inner tube and the outer sheath tube; the limiting slip rings can also adopt miniature bearings.
[0043] Furthermore, the pliers assembly includes a pliers rod body 11 connected to the adapter 4, a pair of first handle rings 12 are provided on the pliers rod body 11, and a second handle ring 13 is provided at one end of the pliers rod body 11 away from the adapter 4, and a ring seat of the second handle ring 13 is connected to the inner tube 2 passing through the pliers rod body 11.
[0044] The first handle ring 12 can control the entire hand pliers assembly and the outer sheath 1, and the second handle ring 13 can independently control the movement of the inner tube 2. In some embodiments, the ring seat can also be connected to a sliding sleeve, which is inserted into and connected to the hand pliers rod body. The sliding sleeve can protect the inner tube at the end position and also facilitate its sliding.
[0045] Furthermore, a through groove 14 is provided on the outer circumference of the hand clamp rod 11 along the length direction, and the liquid inlet hose 7 is connected to the inner tube 2 at the through groove 14. This connection method is more convenient. Figure 7 As shown, a hole can also be opened at the ring seat to connect the liquid inlet hose 7.
[0046] Furthermore, a circulating coolant is provided in the cooling host 8, and the temperature of the circulating coolant pumped into the liquid inlet hose 7 is controlled above a safety threshold temperature, and the safety threshold temperature range is 0 to 10 degrees Celsius, so as to avoid additional damage to human tissues caused by the introduction of liquid with too low a temperature (such as water).
[0047] In some embodiments, the internal space of the inner tube 2 can be used to allow an electrode guide wire for lithotripsy to pass therein to reach the lesion, or an axial channel can be opened in the outer sheath to set the electrode guide wire.
[0048] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A stone crushing and cooling stone taking basket, characterized in that: It comprises an outer sheath tube, a slidable inner tube is arranged inside the outer sheath tube, one end of the inner tube is connected to a stone removal net and can extend from the end of the outer sheath tube, the other end of the outer sheath tube is connected to an adapter, the adapter is connected to a hand pliers assembly, and the other end of the inner tube passes through the adapter and is connected to the hand pliers assembly; A liquid extraction channel is provided in the outer sheath tube, and a liquid extraction hose is connected to one end of the liquid extraction channel close to the adapter. The other end of the liquid extraction channel passes through the end of the outer sheath tube. The inner tube is provided with a liquid inlet hose at the hand pliers assembly, and both the liquid extraction hose and the liquid inlet hose are connected to the cooling host.
2. The stone crushing and cooling stone extraction basket according to claim 1, characterized in that: The liquid extraction channel includes an annular channel arranged near the end, and a plurality of axial channels communicated with the annular channel; the annular channel is connected to the liquid extraction hose, and the plurality of axial channels are symmetrically arranged around the central axis of the outer sheath tube.
3. The stone crushing and cooling stone extraction basket according to claim 2, characterized in that: The axial channels are elliptical channels arranged at intervals or fan-shaped channels arranged adjacent to each other, and the sum of the cross-sectional areas of a plurality of the axial channels is not less than the cross-sectional area of the inner tube.
4. The stone crushing and cooling stone extraction basket according to claim 1, characterized in that: The outer sheath tube is provided with a trumpet structure at the end where the stone removal net is located, and a fine-pore filter is provided at the end of the liquid extraction channel.
5. The stone crushing and cooling stone extraction basket according to claim 1, characterized in that: The adapter has a small head end and a large head end, the small head end is connected to the outer sheath tube by screwing, clamping or welding, the large head end is connected to the pliers assembly by screwing, clamping or welding, and a channel is provided between the large head end and the small head end for the inner tube to pass through.
6. The stone crushing and cooling stone extraction basket according to claim 1, characterized in that: The inner circumference of the inner tube is provided with a plurality of guide grooves, and a plurality of limiting slip rings are provided between the outer circumference of the inner tube and the inner circumference of the outer sheath tube.
7. The stone crushing and cooling stone extraction basket according to claim 1, characterized in that: The pliers assembly includes a pliers rod body connected to the adapter, a pair of first handle rings are provided on the pliers rod body, a second handle ring is provided at one end of the pliers rod body away from the adapter, and a ring seat of the second handle ring is connected to the inner tube passing through the pliers rod body.
8. The stone crushing and cooling stone extraction basket according to claim 7, characterized in that: A through groove is provided on the outer circumference of the hand pliers rod body along the length direction, and the liquid inlet hose is connected to the inner tube at the through groove.
9. The stone crushing and cooling stone extraction basket according to claim 1, characterized in that: The cooling host is provided with a circulating coolant, and the temperature of the circulating coolant pumped into the liquid inlet hose is controlled above a safety threshold temperature, and the safety threshold temperature range is 0 to 10 degrees Celsius.