A ureteral guiding sheath

Abstract

This utility model relates to the field of guide sheath technology and discloses a ureteral guide sheath, including a negative pressure suction bottle. The top of the negative pressure suction bottle is connected to a bottle cap, and the outer wall of the bottle cap is connected to a negative pressure connecting part. The top of the bottle cap is connected to a connecting tube, and the other end of the connecting tube away from the bottle cap is connected to the guide sheath body. The outer wall of the guide sheath body is provided with a connecting head, and the inner cavity of the connecting head is filled with gauze. The inner cavity of the guide sheath body has a receiving cavity. The outer wall of the guide sheath body is connected to a negative pressure suction sheath, and the outer wall of the guide sheath body is provided with a threaded head. The inner wall of the threaded head is threaded with an empty needle. This ureteral guide sheath, through the cooperative use of the bottle cap, connecting tube, guide sheath body, negative pressure suction sheath, and gauze, enables the gauze on the device to act as a barrier between the connecting tube and the guide sheath body, thereby intercepting small stones and trapping them in the inner cavity of the receiving cavity.

Description

Technical Field

[0001] This utility model relates to the field of guide sheath technology, specifically a ureteral guide sheath. Background Technology

[0002] The use of ureteral guiding sheaths can significantly improve the success rate of ureteral stenosis and narrow lumen in patients, enhance the effectiveness and safety of examination and treatment, and significantly reduce ureteral injury. At the same time, it can also help doctors more accurately observe and treat urinary system diseases, improve the success rate of surgery and the cure rate of patients.

[0003] For existing ureteral guiding sheaths, please refer to Chinese utility model patent with authorization announcement number CN220735878U, which discloses a ureteral guiding sheath, "including a sheath seat body and a sheath tube body with a flexible front end, the sheath seat body having an instrument channel and a negative pressure suction channel communicating with the instrument channel, the sheath tube body being connected to the instrument channel; the sheath seat body is also provided with a negative pressure adjustment port communicating with the instrument channel, the negative pressure adjustment port being located on the opposite side of the communication port between the negative pressure suction channel and the instrument channel."

[0004] When using the aforementioned devices, the existing devices utilize the opposite side of the connection between the negative pressure suction channel and the instrument channel to control the stone suction speed and suction force of the ureteral guide sheath, ensuring safety and effectiveness during stone fragmentation and removal, and preventing stone entrapment; and are easy to operate. However, during the collection of small stones, they need to be stored, and the small stones should be prevented from blocking the negative pressure transmission channel during the process. Furthermore, after the guide sheath is removed from the device, to prevent the negative pressure effect from disappearing, the opening should be resealed with a sealing cap to prevent the negative pressure suction effect from disappearing. Therefore, a ureteral guide sheath that solves the above problems is needed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a ureteral guiding sheath that has the advantages of aspirating stones, blocking stones, and causing blockage, thus solving the problems mentioned in the background section.

[0006] This utility model provides the following technical solution: a ureteral guide sheath, comprising a negative pressure suction bottle, a bottle cap connected to the top of the negative pressure suction bottle, a negative pressure connecting part connected to the outer wall of the bottle cap, a connecting tube connected to the top of the bottle cap, a guide sheath body connected to the other end of the connecting tube away from the bottle cap, a connector provided on the outer wall of the guide sheath body, gauze placed in the inner cavity of the connector, a receiving cavity opened in the inner cavity of the guide sheath body, a negative pressure suction sheath connected to the outer wall of the guide sheath body, a threaded head provided on the outer wall of the guide sheath body, an empty needle threadedly connected to the inner wall of the threaded head, a docking device provided on the outer wall of the empty needle, a guide sheath sleeved on the inner wall of the docking device, and a finger ring connected to the outer wall of the guide sheath body.

[0007] As a preferred embodiment of this utility model, the bottle cap is connected to the inner cavity of the connecting tube, and the connecting tube is connected to the inner cavity of the guide sheath body.

[0008] As a preferred embodiment of this utility model, the connecting tube is connected to the guide sheath body through a connector, and the outer wall size of the gauze is adapted to the inner wall size of the connector.

[0009] As a preferred embodiment of this utility model, the inner capacity of the receiving cavity is 20ml, and the inner cavity of the receiving cavity is connected to the inner cavity of the negative pressure suction sheath.

[0010] As a preferred embodiment of this utility model, the outer wall size of the guide sheath is adapted to the inner wall size of the negative pressure suction sheath, and the length of the guide sheath is greater than the length of the negative pressure suction sheath.

[0011] As a preferred embodiment of this utility model, the number of the finger rings is two, and the two finger rings are symmetrically arranged on both sides of the guide sheath body.

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

[0013] 1. This ureteral guide sheath, through the coordinated use of the bottle cap, connecting tube, guide sheath body, negative pressure suction sheath, and gauze, allows the bottle cap to transmit negative pressure through the connecting tube to the inner lumen of the guide sheath body and the negative pressure suction sheath. The negative pressure suction sheath then draws water from the renal pelvis and simultaneously suctions out small stones. The gauze on the device acts as a barrier between the connecting tube and the guide sheath body, intercepting the small stones and trapping them within the inner lumen of the receiving cavity.

[0014] 2. This ureteral guiding sheath, through the coordinated use of the empty needle, docking device, guiding sheath body, guide sheath, and negative pressure suction sheath, allows the device to enter the renal pelvis using the guide sheath carrying the negative pressure suction sheath, and then be pulled outwards by the empty needle. The connection between the guide sheath and the docking device is released, thereby allowing the empty needle on the device to reconnect with the guiding sheath body. This allows the empty needle on the device to act as a blockage, preventing the negative pressure effect in the inner cavity of the guiding sheath body from failing, and allowing small stones contained in the cavity to be removed. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the right side of this utility model;

[0017] Figure 3This is a schematic diagram of the cross-sectional structure of the guide sheath of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 5 This is a schematic diagram of the gauze structure of this utility model.

[0020] In the diagram: 1. Negative pressure suction bottle; 2. Bottle cap; 3. Negative pressure connection part; 4. Connecting tube; 5. Guide sheath body; 6. Connector; 7. Gauze; 8. Receiving cavity; 9. Negative pressure suction sheath; 10. Threaded head; 11. Empty needle; 12. Connector; 13. Guide sheath; 14. Finger ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 A ureteral guide sheath includes a negative pressure suction bottle 1, a bottle cap 2 connected to the top of the negative pressure suction bottle 1, a negative pressure connection part 3 connected to the outer wall of the bottle cap 2, a connecting tube 4 connected to the top of the bottle cap 2, and a guide sheath body 5 connected to the other end of the connecting tube 4 away from the bottle cap 2. A connector 6 is provided on the outer wall of the guide sheath body 5, gauze 7 is placed inside the inner cavity of the connector 6, a receiving cavity 8 is opened in the inner cavity of the guide sheath body 5, a negative pressure suction sheath 9 is connected to the outer wall of the guide sheath body 5, a threaded head 10 is provided on the outer wall of the guide sheath body 5, an empty needle 11 is threadedly connected to the inner wall of the threaded head 10, and a docking device 1 is provided on the outer wall of the empty needle 11. 2. A guide sheath 13 is fitted onto the inner wall of the docking device 12, and a finger ring 14 is connected to the outer wall of the guide sheath body 5. Through the coordinated use of the bottle cap 2, connecting tube 4, guide sheath body 5, negative pressure suction sheath 9, and gauze 7 on the device, the bottle cap 2 on the device transmits negative pressure through the connecting tube 4 to the inner cavity of the guide sheath body 5 and the negative pressure suction sheath 9. The negative pressure suction sheath 9 is used to aspirate the water in the renal pelvis, and the stones are simultaneously aspirated under the action of aspiration. Thus, the gauze 7 on the device acts as a barrier between the connecting tube 4 and the guide sheath body 5, blocking the stones and trapping them in the inner cavity of the receiving cavity 8.

[0023] In a preferred embodiment, the bottle cap 2 is connected to the inner cavity of the connecting tube 4, and the connecting tube 4 is connected to the inner cavity of the guide sheath body 5. When the bottle cap 2 and the inner cavity of the connecting tube 4 are connected, the negative pressure in the inner cavity of the bottle cap 2 affects the connecting tube 4, thereby causing the liquid flowing in the inner cavity of the connecting tube 4 to enter the inner cavity of the bottle cap 2, and guiding the liquid in the inner cavity of the guide sheath body 5 into the inner cavity of the bottle cap 2.

[0024] In a preferred embodiment, the connecting tube 4 is connected to the guide sheath body 5 via the connector 6, and the outer wall size of the gauze 7 is adapted to the inner wall size of the connector 6. The connecting tube 4 on the device is connected to the guide sheath body 5 via the connector 6, so that the connecting tube 4 on the device and the guide sheath body 5 are connected and communicate with each other. However, when passing through the connector 6, the gauze 7 is used to block the flow, so that the gauze 7 on the device can isolate the stones in the communicating space and prevent them from entering the inner cavity of the connecting tube 4.

[0025] In a preferred embodiment, the inner capacity of the receiving cavity 8 is 20ml, and the inner cavity of the receiving cavity 8 is connected to the inner cavity of the negative pressure suction sheath 9. Because the inner capacity of the receiving cavity 8 on the device is 20ml, the receiving cavity 8 on the device can use the negative pressure suction sheath 9 to draw out water or stones from the kidney under the action of negative pressure, so that the receiving cavity 8 on the device can act as a stone storage device with a capacity of 20ml.

[0026] In a preferred embodiment, the outer wall size of the guide sheath 13 is adapted to the inner wall size of the negative pressure suction sheath 9, and the length of the guide sheath 13 is greater than the length of the negative pressure suction sheath 9. By adapting the outer wall size of the guide sheath 13 to the inner wall size of the negative pressure suction sheath 9, one end of the guide sheath 13 is sleeved with the docking device 12, and the other end extends out of the inner cavity of the negative pressure suction sheath 9, so that when the guide sheath 13 extends into the renal pelvis, it carries the negative pressure suction sheath 9 into the renal pelvis.

[0027] In a preferred embodiment, there are two rings 14, and the two rings 14 are symmetrically arranged on both sides of the guide sheath body 5. By having two rings 14 on the device, the guide sheath body 5 can be held when two fingers are inserted into the inner cavity of the rings 14, so that medical staff can hold the device stably for work.

[0028] The working principle is as follows: First, the bottle cap 2, connecting tube 4, guide sheath body 5, negative pressure suction sheath 9, and gauze 7 work together. The bottle cap 2 transmits negative pressure through the connecting tube 4 to the inner cavities of the guide sheath body 5 and the negative pressure suction sheath 9. The negative pressure suction sheath 9 then draws water from the renal pelvis, simultaneously suctioning out small stones. The gauze 7 acts as a barrier between the connecting tube 4 and the guide sheath body 5, intercepting the small stones and trapping them within the receiving cavity 8. Then, the water is drawn out through the device... The coordinated use of the empty needle 11, docking device 12, guide sheath body 5, guide sheath 13, and negative pressure suction sheath 9 allows the device to enter the renal pelvis using the guide sheath 13 to carry the negative pressure suction sheath 9, and then be pulled outwards by the empty needle 11. The connection between the guide sheath 13 and the docking device 12 is released, thereby allowing the empty needle 11 on the device to reconnect with the guide sheath body 5. This allows the empty needle 11 on the device to act as a blockage, preventing the negative pressure effect inside the guide sheath body 5 from failing, and allowing small stones contained in the receiving cavity 8 to be removed.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ureteral guiding sheath, comprising a negative pressure suction bottle (1), characterized in that: The top of the negative pressure suction bottle (1) is connected to a bottle cap (2), the outer wall of the bottle cap (2) is connected to a negative pressure connection part (3), the top of the bottle cap (2) is connected to a connecting tube (4), the other end of the connecting tube (4) away from the bottle cap (2) is connected to a guide sheath body (5), the outer wall of the guide sheath body (5) is provided with a connector (6), the inner cavity of the connector (6) is filled with gauze (7), the inner cavity of the guide sheath body (5) is provided with a receiving cavity (8), the outer wall of the guide sheath body (5) is connected to a negative pressure suction sheath (9), the outer wall of the guide sheath body (5) is provided with a threaded head (10), the inner wall of the threaded head (10) is threaded with an empty needle (11), the outer wall of the empty needle (11) is provided with a docking device (12), the inner wall of the docking device (12) is fitted with a guide sheath (13), and the outer wall of the guide sheath body (5) is connected with a finger ring (14).

2. The ureteral guiding sheath according to claim 1, characterized in that: The bottle cap (2) is connected to the inner cavity of the connecting tube (4), and the connecting tube (4) is connected to the inner cavity of the guide sheath body (5).

3. The ureteral guiding sheath according to claim 1, characterized in that: The connecting tube (4) is connected to the guide sheath body (5) through the connector (6), and the outer wall size of the gauze (7) is adapted to the inner wall size of the connector (6).

4. The ureteral guiding sheath according to claim 1, characterized in that: The inner capacity of the receiving cavity (8) is 20ml, and the inner cavity of the receiving cavity (8) is connected to the inner cavity of the negative pressure suction sheath (9).

5. A ureteral guiding sheath according to claim 1, characterized in that: The outer wall size of the guide sheath (13) is adapted to the inner wall size of the negative pressure suction sheath (9), and the length of the guide sheath (13) is greater than the length of the negative pressure suction sheath (9).

6. A ureteral guiding sheath according to claim 1, characterized in that: The number of the rings (14) is two, and the two rings (14) are symmetrically arranged on both sides of the guide sheath body (5).

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