In-vivo gravel adsorption device

Abstract

The utility model discloses an in-vivo rubble adsorption device which comprises an outer pipe body, the outer pipe body comprises a hose and an end cover arranged at the end of the hose, a plurality of guide holes are formed in the outer ring of the hose, direction adjusting screws used for being fixed to the end cover are movably arranged in the guide holes, a liquid inlet channel and a liquid outlet channel are formed in the middle of the outer pipe body, and the liquid inlet channel is communicated with the liquid outlet channel. A diffusion flow guide device is arranged at a liquid outlet of the liquid inlet channel, a connecting part is arranged between the diffusion flow guide device and the side wall of the liquid inlet channel, a plurality of layers of filter screen bodies are arranged in the liquid discharging channel, an annular collecting cavity is formed in the inner wall of the liquid discharging channel and comprises an inlet part and a containing part, and the inlet part is communicated with the containing part. The position of the inlet part of the collecting cavity corresponds to the position of the outer ring of the filter screen body; the stone removing device has the advantages of being convenient to operate, high in stone removing efficiency and capable of preventing blocking.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithotripsy surgical tools, and in particular relates to an in vivo lithotripsy adsorption device. Background Art

[0002] Treatment for stones in the body usually includes conservative treatment and surgical treatment. Surgical treatment: For kidney stones with a diameter greater than 1.5 cm, or multiple stones, or ureteral stones with a diameter less than 1.5 cm, you can also use transurethral, ​​bladder, ureteral lithotripsy and stone removal. The stones can be crushed and removed from the body by laser, ultrasound or bile duct. For kidney stones or multiple stones, percutaneous nephrolithotomy can be used to crush or remove the stones. For stones combined with ureteral stenosis and kidney malformations, laparoscopy can be used to reshape the deformity, or the ureter or pyelectomy can be opened to remove the stones at the same time.

[0003] A catheter is a tubular object used for infusion, drainage, endoscopic examination, and stone removal. There are many types of catheters, such as intravenous catheters, urinary catheters, gastric tubes, and endotracheal tubes. Each catheter has different sizes, lengths, shapes, and materials. A stone removal basket is a medical device that is mainly used to capture and remove stones or foreign objects in the body under endoscopy.

[0004] Lithotripsy usually refers to the treatment method of treating stones inside the human body with special instruments, including mechanical, electrohydraulic, ultrasonic, laser and pneumatic lithotripsy. Although extracorporeal shock wave lithotripsy has become the preferred treatment method for upper urinary tract stones, internal lithotripsy is still an indispensable treatment method for lower urinary tract stones, ureteral impacted stones, giant kidney stones, stones that are difficult to locate or treat with extracorporeal shock wave lithotripsy, and severe stone streets after shock wave lithotripsy. After the stones are broken, small-sized gravel is formed, and its particle size is often less than 2 mm. It cannot be removed by conventional technical means, resulting in residual stones and technical defects such as incomplete stone removal.

[0005] The problem with the stone removal process in the prior art is that the stone removal basket has a limited scope of application, and it is inconvenient to remove gravel with fine particle size and large quantity, and the removal is not thorough, resulting in low stone removal efficiency; when using a catheter to directly suck out the gravel, liquid usually needs to be injected, and there is a problem that the pipeline is too long and the gravel easily blocks the pipeline. Summary of the invention

[0006] The utility model aims to provide an internal stone crushing adsorption device in view of the problems existing in the prior art, which has the advantages of convenient operation, high stone removal efficiency and anti-clogging.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an in-body gravel adsorption device, comprising an outer tube body, the outer tube body comprising a hose and an end cap arranged at the end of the hose, the outer circle of the hose is provided with a plurality of guide holes, a direction adjustment wire for fixing with the end cap is movably arranged in the guide hole, a liquid inlet channel and a liquid discharge channel are arranged in the middle part of the outer tube body, a diffuser guide is arranged at the liquid outlet of the liquid inlet channel, a connecting part is arranged between the diffuser guide and the side wall of the liquid inlet channel, a plurality of layers of filter mesh bodies are arranged in the liquid discharge channel, an annular collecting cavity is arranged on the inner wall of the liquid discharge channel, the collecting cavity comprises an inlet part and a accommodating part, and the position of the inlet part of the collecting cavity corresponds to the position of the outer circle of the filter mesh body.

[0008] In the above scheme, the hose is fixed to the end cover, and a guide hole is provided in the hose of the outer tube body to facilitate the connection of the end cover with a direction adjustment wire. When in use, the end cover side extends into the surgical site, and the direction adjustment wire is operated to drive the end cover to squeeze the hose to achieve the steering of the hose. The liquid inlet channel is used to transport liquid to the liquid outlet side, which is convenient for adsorbing gravel. When the liquid passes through the diffuser guide, it diverges to the surroundings, which is convenient for wrapping the gravel and avoiding directly rushing to the gravel and washing the gravel away. The diffuser guide is fixed by the connecting part, and the discharge channel is used to discharge the liquid and the gravel together with the surgical site. A multi-layer filter mesh body is set to intercept the gravel. Under the action of gravity and liquid flow force, the intercepted gravel enters the containing part from the inlet of the collecting cavity along the filter mesh body surface for centralized storage, and is directly removed with the outer tube body at a later time.

[0009] Furthermore, the diffuser guide includes a conical structure, and the connecting portion includes a plurality of connecting rods arranged on the periphery of the conical structure.

[0010] The conical structure is used to disperse the liquid outwards, which is convenient for wrapping gravel, and the conical structure is positioned and fixed by a connecting rod.

[0011] Furthermore, a raised portion is provided in the middle of the filter body, and the raised portion protrudes toward the end cover.

[0012] The protrusion is provided to facilitate guiding the crushed stones to the inlet of the collecting cavity of the outer ring of the filter mesh body, so that the crushed stones enter the containing part and are concentrated.

[0013] Furthermore, the cross section of the collecting cavity is T-shaped or L-shaped, and the aperture of the filter mesh body decreases with increasing distance from the end cover.

[0014] The cross section of the collection chamber is T-shaped or L-shaped to facilitate the collection of gravel. The aperture of the filter mesh decreases successively, and the gravel is filtered and collected in stages to avoid blockage caused by concentrated distribution of gravel.

[0015] Furthermore, the drainage channel includes a channel inlet, and drainage channels with various channel inlet sizes are arranged in the middle of the outer tube body.

[0016] By setting drainage channels of various sizes, the adsorption and discharge effects of gravels of various sizes can be achieved.

[0017] Furthermore, a plurality of the guide holes are arranged in a circular array on the outer circle of the hose, and a limiting tube is sleeved on the outer side of the outer tube body.

[0018] The direction of the outer tube body can be adjusted conveniently through array-distributed guide holes and direction adjustment threads. When in use, the limit tube sleeve is arranged on the outside of the outer tube body, so that the local angle of the outer tube body part extending out of the limit tube can be adjusted, which makes the adjustment more convenient.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. By setting the liquid inlet channel and the liquid discharge channel, it is convenient for the liquid to enter and the negative pressure to suck out the liquid together with the broken stones. The stone discharge work is efficient and easy to operate, which makes up for the defects of the large particle size and complex operation of the net basket stone.

[0021] 2. By setting a diffuser guide at the outlet of the liquid inlet channel, the liquid is dispersed and flows outward, which is convenient for the liquid to wrap the gravel and enter the drainage channel, avoiding the liquid directly rushing to the gravel, and the gravel is flushed away, thereby improving the gravel collection efficiency;

[0022] 3. By setting a filter mesh body and a collection cavity in the drainage channel, the gravel intercepted by the filter mesh body is introduced into the receiving part for collection, so as to avoid blockage of the flow channel and escape of the gravel from the drainage channel, thereby improving the stone removal effect; by setting a raised part in the middle of the filter mesh body, it is convenient for the gravel to enter the receiving part, thus ensuring the smoothness of the flow channel, improving the stone removal efficiency, and avoiding the reduction of drainage pressure due to blockage of gravel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural cross-sectional view of an in vivo lithotripsy adsorption device according to Example 1 of the utility model;

[0024] Figure 2 It is a left side view of the structure of an in vivo lithotripsy adsorption device according to Example 1 of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the filter screen body in Example 2 of the present utility model;

[0026] Figure 4 It is a left side view of the structure of an in vivo lithotripsy adsorption device according to Example 2 of the utility model;

[0027] In the figure: 1. Hose; 2. End cover; 3. Guide hole; 4. Direction adjustment wire; 5. Liquid inlet channel; 6. Liquid discharge channel; 7. Liquid outlet; 8. Conical structure; 9. Connecting rod; 10. Filter mesh body; 11. Inlet part; 12. Accommodating part; 13. Raised part; 14. Channel inlet; 15. Limiting tube; 16. Pressure pump. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative labor are within the scope of protection of the utility model. In the description of the utility model, it should be noted that the terms front, back, left, right, etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the utility model product is usually placed when used. They are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] Example 1

[0030] like Figure 1-2 As shown, an in vivo gravel adsorption device comprises an outer tube body, the outer tube body comprises a hose 1 and an end cap 2 arranged at the end of the hose 1, the outer circle of the hose 1 is provided with a plurality of guide holes 3, a direction adjustment wire 4 for fixing with the end cap 2 is movably arranged in the guide hole 3, a liquid inlet channel 5 and a liquid discharge channel 6 are arranged in the middle of the outer tube body, a diffuser guide is arranged at the liquid outlet 7 of the liquid inlet channel 5, a connecting portion is arranged between the diffuser guide and the side wall of the liquid inlet channel 5, a plurality of layers of filter mesh bodies 10 are arranged in the liquid discharge channel 6, an annular collecting cavity is opened on the inner wall of the liquid discharge channel 6, the collecting cavity comprises an inlet portion 11 and a receiving portion 12, and the position of the inlet portion 11 of the collecting cavity corresponds to the outer circle position of the filter mesh body 10.

[0031] In the above scheme, the hose 1 is fixed to the end cover 2, and a guide hole 3 is provided in the hose 1 of the outer tube body, which is convenient for the direction adjustment wire 4 to connect the end cover 2. When in use, the end cover 2 side extends into the surgical site, and the end cover 2 is driven by operating the direction adjustment wire 4 to squeeze the hose 1 to achieve the steering of the hose 1. The liquid inlet channel 5 is used to transport liquid to the liquid outlet 7 side, which is convenient for adsorbing gravel. When the liquid passes through the diffuser guide, it diverges to the surroundings, which is convenient for wrapping the gravel and avoiding directly rushing to the gravel and washing the gravel away. The diffuser guide is fixed by the connecting part, and the discharge channel 6 is used to discharge the liquid and the gravel together with the surgical site. A multi-layer filter mesh body 10 is set to intercept the gravel. Under the action of gravity and liquid flow force, the intercepted gravel enters the accommodating part 12 from the inlet part 11 of the collecting cavity along the surface of the filter mesh body 10 for centralized storage, and is directly removed with the outer tube body at a later time.

[0032] The liquid inlet channel 5 and the liquid discharge channel 6 are respectively connected to pressure pumps 16 to realize liquid inlet and liquid discharge, and the diffuser guide is located at the center of the liquid outlet 7. The outer ring of the filter mesh body 10 is connected to the inlet portion 11 accordingly.

[0033] Furthermore, the diffuser guide includes a conical structure 8 , and the connecting portion includes a plurality of connecting rods 9 arranged on the periphery of the conical structure 8 .

[0034] The conical structure 8 is used to disperse the liquid outwards, so as to facilitate wrapping of gravel, and the conical structure 8 is positioned and fixed by the connecting rod 9.

[0035] A plurality of connecting rods 9 are arranged equidistantly along the outer ring of the conical structure 8, and the diffuser guide can also be a curved convex structure as required. The connecting part can also be a sheet-like structure.

[0036] Furthermore, the cross section of the collecting cavity is L-shaped, and the aperture of the filter mesh body 10 decreases with increasing distance from the end cover 2 .

[0037] The cross section of the collecting cavity is T-shaped or L-shaped to facilitate the collection of gravel. The apertures of the filter mesh body 10 decrease successively, and the gravel is filtered and collected in stages to avoid blockage caused by concentrated distribution of gravel.

[0038] Furthermore, a plurality of the guide holes 3 are provided in a circular array on the outer circle of the hose 1, and a limiting tube 15 is sleeved on the outer side of the outer tube body.

[0039] The array-distributed guide holes 3 and the direction adjustment wire 4 facilitate the adjustment of the direction of the outer tube body. When in use, the limit tube 15 is sleeved on the outside of the outer tube body, so that the local angle of the outer tube body part extending out of the limit tube 15 can be adjusted, which makes the adjustment more convenient.

[0040] Four guide holes 3 are arranged along the outer circle of the hose 1 at intervals of 90°.

[0041] Example 2

[0042] like Figure 3-4 As shown, an in vivo lithotripsy adsorption device in this embodiment is further modified as follows based on the embodiment 1:

[0043] Furthermore, a raised portion 13 is provided in the middle of the filter body 10 , and the raised portion 13 protrudes toward the end cover 2 .

[0044] The protrusion 13 is provided to facilitate guiding the crushed stones to the inlet 11 of the collecting cavity of the outer ring of the filter mesh body 10 , so that the crushed stones enter the receiving portion 12 and are collected.

[0045] The protrusion 13 may be a conical protrusion or a curved protrusion.

[0046] Furthermore, the cross section of the collecting cavity is T-shaped.

[0047] The cross section of the collection cavity is T-shaped, which is convenient for collecting gravel.

[0048] Furthermore, the drainage channel 6 includes a channel inlet 14 , and drainage channels 6 with various channel inlet 14 sizes are arranged in the middle of the outer tube body.

[0049] By setting two sizes of drainage channels 6, the adsorption and discharge effects of large and small gravel can be matched. During operation, the large-sized drainage channel 6 can be operated first, and the small-sized drainage channel 6 can be used for the part with insufficient suction and smaller particle size.

[0050] Although 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. An in vivo lithotripsy adsorption device, characterized in that: The utility model comprises an outer tube body, wherein the outer tube body comprises a hose and an end cap arranged at the end of the hose, a plurality of guide holes are opened on the outer circle of the hose, a direction adjustment wire for fixing with the end cap is movably arranged in the guide hole, a liquid inlet channel and a liquid discharge channel are arranged in the middle part of the outer tube body, a diffusion guide is arranged at the liquid outlet of the liquid inlet channel, a connecting part is arranged between the diffusion guide and the side wall of the liquid inlet channel, a plurality of layers of filter mesh bodies are arranged in the liquid discharge channel, an annular collecting cavity is opened on the inner wall of the liquid discharge channel, the collecting cavity comprises an inlet part and a accommodating part, and the position of the inlet part of the collecting cavity corresponds to the position of the outer circle of the filter mesh body.

2. The intracorporeal lithotripsy adsorption device according to claim 1, characterized in that: The diffuser guide comprises a conical structure, and the connecting portion comprises a plurality of connecting rods arranged on the periphery of the conical structure.

3. The intracorporeal lithotripsy adsorption device according to claim 1, characterized in that: A raised portion is arranged in the middle of the filter body, and the raised portion protrudes toward the end cover.

4. The intracorporeal lithotripsy adsorption device according to claim 1, characterized in that: The cross section of the collecting cavity is T-shaped or L-shaped, and the aperture of the filter mesh body decreases with increasing distance from the end cover.

5. The intracorporeal lithotripsy adsorption device according to claim 1, characterized in that: The liquid discharge channel comprises a channel inlet, and the middle portion of the outer tube body is provided with liquid discharge channels with various channel inlet sizes.

6. The intracorporeal lithotripsy adsorption device according to claim 1, characterized in that: A plurality of guide holes are arranged in a circular array on the outer circle of the hose, and a limiting tube is sleeved on the outer side of the outer tube body.

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