Flexible ureteroscope guiding sheath

Abstract

The utility model discloses a flexible ureteroscope guide sheath, and particularly relates to the technical field of medical instruments, the flexible ureteroscope guide sheath comprises a sheath tube, a guide assembly is fixedly connected with an inner cavity of the sheath tube, an expansion assembly is slidably connected with an inner cavity of the guide assembly, and a collection assembly is fixedly connected with the outer surface of the sheath tube. According to the flexible ureteroscope guiding sheath disclosed by the utility model, the collection component is designed to collect the extracted calculus, and in the actual operation process, the pipeline II needs to be connected to a negative pressure machine to extract the air in the pipe body, so that the crushed calculus in the renal pelvis is extracted; the extracted broken stones can be reserved in a space on one side of the filtering baffle to be stored, and liquid extracted along with the broken stones is extracted out of the device through a second pipeline, so that the effect of collecting the broken stones is achieved; and through the arranged expansion assembly and the second connector, fixing of the guide assembly and the expansion assembly can be achieved, follow-up stone exploration and laser lithotripsy operation are facilitated, and the stability of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a ureter soft mirror guide sheath. BACKGROUND

[0002] The ureter guide sheath is a kind of medical instrument, is used to assist to carry out ureteroscopy operation, it is usually made of soft material, can be inserted into the bladder of patient through urethra, and is guided to ureter.

[0003] Chinese patent document CN220530083U discloses a ureter guide sheath, the ureter guide sheath includes guide sheath body and guide sheath connector, the guide sheath body has first end and second end, the second end is connected with the guide sheath connector, the guide sheath connector is equipped with negative pressure connector, the negative pressure connector is communicated with the guide sheath body, the opening of the first end is beveled, one end of guide sheath body adopts beveled design, when reaching the lesion position, the beveled design of guide sheath body increases the surface area of contact with stone, so that it can contact with stone more, in the process of negative pressure lithotripsy, can more quickly attract the gravel into the ureter guide sheath, thereby discharge outside, solve the problem of low efficiency of the ureter guide sheath of prior art in discharging gravel.

[0004] The above patent document can realize the extraction of stone, but does not have the function of collecting stone, and in addition, the fixing problem of expansion tube and guide tube needs to be solved. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a ureter soft mirror guide sheath, which can effectively solve the problems of not being able to collect stones and not being able to fix the expansion tube and guide tube.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] A ureter soft mirror guide sheath, including sheath tube, the sheath tube lumen is fixedly connected with guide assembly, the guide assembly lumen is slidably connected with expansion assembly, the sheath tube outer surface is fixedly connected with collection assembly, the expansion assembly outer surface is movably connected with connector two.

[0008] Preferably, the guide assembly includes a tube body, the tube body outer surface and the sheath tube inner surface are fixedly connected, the tube body outer surface is fixedly connected with a stop ring, the tube body rear end is fixedly connected with a positioning ring, the rear end of the stop ring is provided with two symmetrically distributed clamping grooves.

[0009] Preferably, the expansion assembly comprises a hose, the hose is slidably connected in the inner cavity of the pipe body, a guide head is fixedly connected to the front end of the hose, a fixing sleeve is fixedly connected to the outer surface of the hose, a positioning groove matched with the positioning ring is arranged in the inner portion of the fixing sleeve, two symmetrically distributed springs I are fixedly connected to the outer surface of the fixing sleeve, clamping blocks are fixedly connected to the ends of the springs I away from the fixing sleeve, the clamping blocks are matched with the clamping grooves, and a placing groove is arranged in the inner portion of the hose.

[0010] Preferably, the collecting assembly comprises a pipeline I, one end of the pipeline I is fixedly connected to the outer surface of the pipe body, the pipeline I is communicated with the inner cavity of the pipe body, the other end of the pipeline I penetrates through the sheath and extends to the outside, a storage chamber is threadedly connected to the end of the pipeline I away from the sheath, a filter baffle is fixedly connected in the inner portion of the storage chamber, a connector I is threadedly connected to the end of the filter baffle away from the pipeline I, and a pipeline II is threadedly connected to the end of the connector I away from the storage chamber.

[0011] Preferably, the connector II comprises a body, the body is threadedly connected to the outer surface of the fixing sleeve, and the inner cavity of the body is fixedly connected with a push plate.

[0012] Preferably, the outer surfaces and the inner cavities of the pipe body and the hose are provided with hydrophilic coating.

[0013] Preferably, the outer surface of the hose is provided with a scale line.

[0014] Compared with the prior art, the utility model has the advantages of the following:

[0015] 1、The collecting assembly can collect the extracted calculi, in the actual operation process, the pipeline II is connected to the negative pressure machine to extract the air in the pipe body, so that the gravel in the renal pelvis is extracted, the extracted gravel is stored in the space on the side of the filter baffle, and the liquid extracted together with the gravel is extracted outside the pipeline II extraction device, so that the calculi are collected.

[0016] 2、The expansion assembly and the connector II can fix the guide assembly and the expansion assembly, so that the calculi can be probed and laser gravel operation is facilitated, and the stability of the equipment is improved. ACCURACY OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is a local structure schematic view of the utility model Figure 1 ;

[0019] Figure 3 The schematic view of the guide assembly of the utility model;

[0020] Figure 4 The schematic view of the expansion assembly of the utility model;

[0021] Figure 5 The schematic view of the rotating sleeve of the utility model;

[0022] Figure 6 The schematic view of the utility model; Figure 4 The enlarged schematic view of A in the middle.

[0023] In the figure: 1, sheath tube; 2, guide assembly; 21, pipe body; 22, blocking ring; 23, positioning ring; 24, clamping groove; 3, expansion assembly; 31, hose; 32, guide head; 33, fixed sleeve; 34, positioning groove; 35, spring one; 36, clamping block; 37, placing groove; 38, spring two; 4, collection assembly; 41, pipeline one; 42, storage chamber; 43, filter baffle; 44, connector one; 45, pipeline two; 5, connector two; 51, body; 52, push plate. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0025] As shown in Figure 1 , Figure 2 and Figure 3 , a ureteroscopy guide sheath, comprising a sheath tube 1, a guide assembly 2 is fixedly connected in the lumen of the sheath tube 1, the guide assembly 2 comprises a pipe body 21, the outer surface of the pipe body 21 is fixedly connected with the inner surface of the sheath tube 1, the outer surface of the pipe body 21 is fixedly connected with a blocking ring 22, the rear end of the pipe body 21 is fixedly connected with a positioning ring 23, two symmetrically distributed clamping grooves 24 are formed in the rear end of the blocking ring 22, the positioning ring 23 is arranged to facilitate subsequent positioning operation, and a blocking block is arranged in the clamping groove 24 to facilitate subsequent fixing of the device;

[0026] As shown in Figure 4 , Figure 5 and Figure 6As shown, the guide assembly 2 inner cavity is slidably connected with the expansion assembly 3, the expansion assembly 3 includes a hose 31, the outer surface of the hose 31 is provided with a scale line, the outer surface and the inner cavity of the pipe body 21 and the hose 31 are provided with a hydrophilic coating, the hose 31 is slidably connected in the inner cavity of the pipe body 21, the front end of the hose 31 is fixedly connected with a guide head 32, the outer surface of the hose 31 is fixedly connected with a fixed sleeve 33, the inside of the fixed sleeve 33 is provided with a positioning groove 34 matched with the positioning ring 23, the outer surface of the fixed sleeve 33 is fixedly connected with two symmetrically distributed springs 35, the end of the spring 35 away from the fixed sleeve 33 is fixedly connected with a clamping block 36 matched with the clamping groove 24, the inside of the hose 31 is provided with a placing groove 37, the inner cavity of the placing groove 37 is fixedly connected with a spring 38, the outer surface of the expansion assembly 3 is movably connected with a connector 5, the connector 5 includes a body 51, the body 51 is threadedly connected to the outer surface of the fixed sleeve 33, the inner cavity of the body 51 is fixedly connected with a push plate 52;

[0027] During installation, the positioning ring 23 and the positioning groove 34 are matched with each other, at this time the clamping block 36 will enter the clamping groove 24, at this time the body 51 is rotated to make the push plate 52 extrude along the inclined surface of the clamping block 36 to make the clamping block 36 and the clamping groove 24 mutually clamped, so as to complete the fixing;

[0028] When it is needed to release the fixing, the body 51 is only rotated in the opposite direction, at this time the spring 35 will stretch the clamping block 36 outward to make the clamping block 36 away from the fixed range of the clamping groove 24, so as to release the locking;

[0029] The spring 38 in the inner cavity of the placing groove 37 can improve the flexibility of the equipment, so that the hose 31 is more easily bent, and the medical staff is convenient to operate;

[0030] The hydrophilic coating used in the scheme is a conventional equipment of the prior art, the hydrophilic coating is a kind of surface coating, which has the characteristics of making liquid water droplets quickly spread and diffuse on its surface, such coating is usually realized by applying special chemical treatment or adding specific chemicals on the surface, the main function of the hydrophilic coating is to reduce the surface tension, so that water molecules are more easily spread on its surface, thereby forming a thin water film, preventing water droplets from staying on the surface, and improving the weather resistance of the material.

[0031] As Figure 4 And Figure 6As shown, the sheath 1 outer surface fixedly connected with the collection assembly 4, the collection assembly 4 includes pipeline one 41, one end of the pipeline one 41 and the pipe body 21 outer surface fixedly connected, and the pipeline one 41 with the pipe body 21 inner cavity is communicated, the other end of the pipeline one 41 passes through the sheath 1 and extends in the outside, the other end of the pipeline one 41 away from the sheath 1 is screw connected with the storage chamber 42, the storage chamber 42 inside fixedly connected with the filter baffle 43, the filter baffle 43 away from the other end of the pipeline one 41 is screw connected with the connector one 44, the connector one 44 away from the other end of the storage chamber 42 is screw connected with the pipeline two 45;

[0032] The pipeline two 45 one end is connected with the negative pressure machine, the negative pressure machine extracts the air in the pipe body 21, thereby the kidney pelvis in the stone is extracted, the extracted stone is stored in the storage chamber 42, and the rest liquid is filtered through the filter baffle 43 and is extracted to the outside through the pipeline two 45.

[0033] The working principle of the utility model is as follows: first, the pipe body 21 is inserted into the kidney pelvis through the ureter, then the hose 31 is entered into the specified position along the pipe body 21, after that, the positioning ring 23 and the positioning groove 34 are correspondingly clamped, at this time, the clamping block 36 will enter the clamping groove 24, then the rotating body 51 is rotated to make the push plate 52 extrude along the inclined surface of the clamping block 36 to make the clamping block 36 and the clamping groove 24 clamped with each other, when the laser lithotripsy operation is completed, one end of the pipeline two 45 is connected with the negative pressure machine, the negative pressure machine is started to extract the air in the pipe body 21, the stone in the kidney pelvis is extracted and stored in the storage chamber 42, and the rest liquid is filtered through the filter baffle 43 and extracted to the outside through the pipeline two 45.

[0034] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A ureteroscopic guide sheath comprising a sheath tube (1), characterized in that: The sheath (1) inner cavity is fixedly connected with a guide assembly (2), the guide assembly (2) inner cavity is slidably connected with a dilatation assembly (3), the sheath (1) outer surface is fixedly connected with a collection assembly (4), the dilatation assembly (3) outer surface is movably connected with a connector two (5); The collection assembly (4) includes a pipeline one (41), one end of the pipeline one (41) is fixedly connected with the outer surface of the pipe body (21), and the pipeline one (41) is communicated with the inner cavity of the pipe body (21), the other end of the pipeline one (41) penetrates through the sheath (1) and extends in the outside world, the end of the pipeline one (41) away from the sheath (1) is screwedly connected with a storage chamber (42), the storage chamber (42) is fixedly connected with a filter baffle (43) inside, one end of the filter baffle (43) away from the pipeline one (41) is screwedly connected with a connector one (44), and the end of the connector one (44) away from the storage chamber (42) is screwedly connected with a pipeline two (45).

2. The flexible ureteroscope guiding sheath according to claim 1, wherein: The guide assembly (2) includes a pipe body (21), the outer surface of the pipe body (21) is fixedly connected with the inner surface of the sheath (1), the outer surface of the pipe body (21) is fixedly connected with a stop ring (22), and the rear end of the pipe body (21) is fixedly connected with a positioning ring (23); two symmetrically-distributed clamping grooves (24) are formed in the rear end of the stop ring (22).

3. The flexible ureteroscope guiding sheath according to claim 2, wherein: The dilatation assembly (3) includes a hose (31), the hose (31) is slidably connected in the inner cavity of the pipe body (21), the front end of the hose (31) is fixedly connected with a guide head (32), the outer surface of the hose (31) is fixedly connected with a fixed sleeve (33), the inner portion of the fixed sleeve (33) is fixedly connected with a positioning groove (34) matched with the positioning ring (23), the outer surface of the fixed sleeve (33) is fixedly connected with two symmetrically-distributed springs one (35), one end of the spring one (35) away from the fixed sleeve (33) is fixedly connected with a clamping block (36), and the clamping block (36) is matched with the clamping groove (24), and the inner portion of the hose (31) is fixedly connected with a spring two (38).

4. The flexible ureteroscope guiding sheath according to claim 3, wherein: The connector two (5) includes a body (51), the body (51) is screwedly connected with the outer surface of the fixed sleeve (33), and the inner cavity of the body (51) is fixedly connected with a push plate (52).

5. The flexible ureteroscope guiding sheath according to claim 3, wherein: The outer surface and the inner cavity of the pipe body (21) and the hose (31) are all provided with a hydrophilic coating.

6. The flexible ureteroscope guiding sheath according to claim 3, wherein: The outer surface of the hose (31) is provided with a scale line.

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