Negative pressure suction ureteral guide sheath

Abstract

The present application relates to a kind of negative pressure suction ureteral guide sheath, including sheath tube, bending handle and multifunctional connector connected in turn;Sheath tube is communicated through bending handle and multifunctional connector;Bending handle includes upper shell, lower shell, traction wire reel and locking assembly;Upper shell and lower shell are connected to form handle main body, traction wire reel is rotatably installed in the cavity enclosed by lower shell and upper shell, and sheath tube is connected by traction wire reel through traction wire, and the rotation of traction wire reel can drive the head end of sheath tube to bend;Locking assembly is installed in traction wire reel and can be transformed between locking state and unlocking state, when locking assembly is in locking state, traction wire reel and upper shell are relatively fixed;When locking assembly is in unlocking state, traction wire reel can be rotated relative to upper shell, and its beneficial effect is that it is convenient and quick to operate, without needing to continuously operate handle, effectively reduce the operation burden of doctor, improve surgical effect.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a negative pressure suction ureteral guide sheath. Background Technology

[0002] Currently, intrarenal retrograde nephrectomy (RIRS) is an advanced minimally invasive surgical procedure for treating kidney stones. It is particularly suitable for treating small stones or stones located in complex areas of the kidney. During the procedure, a channel needs to be created to insert instruments or perform other operations. The most common method for creating this channel is to use a flexible ureteroscope with a guidewire to insert a sheath.

[0003] During the procedure, surgeons typically use this surgical channel to insert an optical fiber in conjunction with a laser lithotripter to break up the stones, and then remove the fragments using the negative pressure suction function on the sheath connector. However, the sheath often fails to lock when bent, requiring the surgeon to continuously press the handle, increasing their workload. Furthermore, some locking mechanisms are complex to operate, requiring additional time and effort from the surgeon to adjust, further increasing the difficulty and risk of the surgery and affecting its outcome. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a negative pressure suction ureteral guide sheath, which solves the technical problems of the prior art being unable to self-lock or having inconvenient locking and bending, thus affecting the surgical effect.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] This invention provides a negative pressure suction ureteral guide sheath, comprising a sheath tube, a bending handle, and a multi-functional connector connected in sequence; the sheath tube is connected to the bending handle and the multi-functional connector; the bending handle includes an upper shell, a lower shell, a traction wire disc, and a locking component; the upper shell and the lower shell are connected to form the handle body, the traction wire disc is rotatably installed in the cavity enclosed by the lower shell and the upper shell, the traction wire disc is connected to the sheath tube through a traction wire, and the rotation of the traction wire disc can drive the traction wire to pull the sheath tube tip to bend; the locking component is installed on the traction wire disc and can switch between a locked state and an unlocked state; when the locking component is in the locked state, the traction wire disc and the upper shell are relatively fixed; when the locking component is in the unlocked state, the traction wire disc can rotate relative to the upper shell.

[0009] Optionally, a slot is provided on the side of the upper housing; the locking assembly includes a claw and a pressure rod; the claw is installed on the side of the traction coil, and the pressure rod is installed on the claw; when the traction coil rotates to the target angle, the claw is opened by pressing the pressure rod, so that the claw approaches and engages with the slot, and the locking assembly is in a locked state, thereby fixing the traction coil and the upper housing relatively.

[0010] Optionally, the claw includes two integrally formed structural claws; the two structural claws are symmetrically arranged, forming a mounting groove between them; the pressure rod is engaged in the mounting groove, and the connecting end of the pressure rod is larger than the size of the mounting groove; when locked, pressing the pressure rod opens the mounting groove through the connecting end, causing the two structural claws to open up and down, and the upper structural claw approaches and engages with the groove.

[0011] Optionally, the slot includes multiple grooves extending circumferentially along the upper housing; the engagement point of the structural claw is provided with multiple protrusions, the number of grooves being greater than the number of protrusions; when locked, the multiple protrusions at the engagement point are connected one-to-one to a portion of the grooves.

[0012] Optionally, the end of the pressure rod is provided with a pressure block as a connecting end, and the pressure block is engaged in the mounting groove; two symmetrically arranged limiting protrusions are provided in the mounting groove to prevent the pressure block from falling out of the mounting groove.

[0013] Optionally, the sheath includes a sheath body, a data acquisition and delivery module, and a temperature and pressure measurement module; the sheath body is connected to a multi-functional connector via a bending handle, a traction wire is connected to the sheath body, and the data acquisition and delivery module and the temperature and pressure measurement module are located at the free end of the sheath body; the water injection unit and the optical fiber unit of the data acquisition and delivery module are connected to the multi-functional connector through the water injection channel and the optical fiber channel in the sheath body, respectively.

[0014] Optionally, the data acquisition and transmission module may also include a lighting unit and a camera unit.

[0015] Optionally, the multi-functional connector includes a connector body, a water injection connector, and an optical fiber insertion connector; the water injection connector and the optical fiber insertion connector are connected to the connector body, and the connector body is connected to the sheath.

[0016] Optionally, the fiber optic insertion connector is equipped with a Luer connector; the drug solution can be injected through the sheath via the Luer connector.

[0017] Optionally, a negative pressure regulating element is provided on the negative pressure channel of the connector body.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this invention are:

[0020] This invention provides a negative pressure suction ureteral guide sheath. In use, the sheath tip is bent by rotating the traction wire disc and pulling it to achieve the target curvature. A locking assembly then connects and locks the traction wire disc to the upper housing. The operation is convenient and quick, eliminating the need for continuous operation of the handle, effectively reducing the surgeon's workload and improving surgical outcomes. The multi-functional connector can connect to an external negative pressure suction device to effectively remove stones and debris, thereby shortening surgical time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a negative pressure suction ureteral guide sheath in Embodiment 1 of the present invention;

[0022] Figure 2 This is an exploded view of the bending handle in Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the traction coil structure in Embodiment 1 of the present invention;

[0024] Figure 4 This is a top view of the upper shell in Embodiment 1 of the present invention;

[0025] Figure 5 yes Figure 4 Schematic diagram of section AA;

[0026] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 This is a schematic diagram of the sheath tube in Embodiment 1 of the present invention;

[0028] Figure 8 This is a structural plan view of the sheath tube in Embodiment 1 of the present invention;

[0029] Figure 9 yes Figure 8 Enlarged view of point B in the middle;

[0030] Figure 10 This is a structural plan view of the sheath from another angle in Embodiment 1 of the present invention;

[0031] Figure 11 yes Figure 10 Enlarged view of point C in the middle;

[0032] Figure 12 This is a schematic diagram of the structure of the multifunctional connector in Embodiment 1 of the present invention;

[0033] Figure 13 This is a structural schematic diagram of the multifunctional connector in Embodiment 1 of the present invention from another angle;

[0034] Figure 14 yes Figure 13 Schematic diagram of the BB section;

[0035] Figure 15 yes Figure 13 Schematic diagram of the C-section;

[0036] Figure 16 This is a cross-sectional schematic diagram of the multifunctional connector in Embodiment 1 of the present invention from another angle;

[0037] Figure 17 This is a schematic diagram of another negative pressure regulating component on the multifunctional connector in Embodiment 1 of the present invention.

[0038] [Explanation of Labels in the Attached Image]

[0039] 1: Sheath; 11: Sheath body; 12: Data acquisition and delivery module; 121: Water injection unit; 122: Fiber optic unit; 123: Illumination unit; 124: Camera unit; 13: Temperature and pressure measurement module; 131: Temperature measurement unit; 132: Pressure measurement unit; 14: Fiber optic channel; 15: Water injection channel;

[0040] 2: Bending handle; 21: Upper housing; 211: Slot; 22: Lower housing; 23: Traction spool; 24: Claw; 241: Structural claw; 242: Mounting slot; 243: Limiting protrusion; 25: Pressure rod; 251: Pressure block;

[0041] 3: Multifunctional connector; 31: Connector body; 32: Water injection connector; 33: Fiber optic insertion connector; 34: Luer connector; 35: Negative pressure regulating component. Detailed Implementation

[0042] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0043] like Figure 1 and Figure 2As shown, a specific embodiment of the present invention provides a negative pressure suction ureteral guide sheath, comprising a sheath tube 1, a bending handle 2, and a multi-functional connector 3 connected in sequence; the sheath tube 1 is connected via the bending handle 2 and the multi-functional connector 3; the bending handle 2 includes an upper shell 21, a lower shell 22, a traction wire disc 23, and a locking component; the upper shell 21 and the lower shell 22 are connected to form the handle body, the traction wire disc 23 is rotatably installed in the cavity enclosed by the lower shell 22 and the upper shell 21, the traction wire disc 23 is connected to the sheath tube 1 via a traction wire, and the rotation of the traction wire disc 23 can drive the traction wire to pull the end of the sheath tube 1 to bend; the locking component is installed on the traction wire disc 23 and can switch between a locked state and an unlocked state. When the locking component is in the locked state, the traction wire disc 23 and the upper shell 21 are relatively fixed; when the locking component is in the unlocked state, the traction wire disc 23 can rotate relative to the upper shell 21.

[0044] Specifically, in use, the traction wire disc 23 rotates, pulling the sheath 1 to bend to the target curvature. Then, the locking assembly connects and locks the traction wire disc 23 to the upper housing 21. This convenient and quick operation eliminates the need for continuous operation of the handle, effectively reducing the surgeon's workload and improving surgical outcomes. The multi-functional connector 3 can connect to an external negative pressure suction device to effectively remove lithotripsy and debris, thereby shortening surgical time.

[0045] Furthermore, such as Figures 2-6 As shown, a slot 211 is provided on the side of the upper housing 21; the locking assembly includes a claw 24 and a pressure rod 25; the claw 24 is installed on the side of the traction coil 23, and the pressure rod 25 is installed on the claw 24; when the traction coil 23 rotates to the target angle, the claw 24 is opened by pressing the pressure rod 25, so that the claw 24 approaches and engages with the slot 211, and the locking assembly is in a locked state, thereby fixing the traction coil 23 and the upper housing 21 relatively. Specifically, the claw 24 includes two integrally formed structural claws 241; the two structural claws 241 are symmetrically arranged, forming an installation groove 242 between them; the pressure rod 25 is engaged in the installation groove 242, and the connecting end of the pressure rod 25 is larger than the size of the installation groove 242; when locked, pressing the pressure rod 25 opens the installation groove 242 through the connecting end, causing the two structural claws 241 to open vertically, and the upper structural claw 241 approaches and engages with the slot 211. In this specific embodiment, the end of the pressure rod 25 is provided with a pressure block 251 as a connecting end. The pressure block 251 is snapped into the mounting groove 242, and the size of the pressure block 251 is larger than that of the mounting groove 242. Two symmetrically arranged limiting protrusions 243 are provided in the mounting groove 242 to prevent the pressure block 251 from falling out of the mounting groove 242.

[0046] like Figures 3-6As shown, in this specific embodiment, the slot 211 includes multiple strip-shaped grooves extending circumferentially along the upper housing 21; the engaging portion of the structural claw 241 is provided with multiple strip-shaped protrusions, the number of grooves being greater than the number of protrusions; when locking, pressing the pressure rod 25 causes the pressure block 251 to penetrate into the mounting groove 242, opening the mounting groove 242, and the upper structural claw 241 moves upward towards the slot 211 until the multiple protrusions at the engaging portion are correspondingly connected to parts of the grooves, thus achieving locking. The multiple strip-shaped grooves extending circumferentially along the upper housing 21 can satisfy locking at various precise angles.

[0047] Furthermore, such as Figures 7-11 As shown, the sheath 1 includes a sheath body 11, a data acquisition and delivery module 12, and a temperature and pressure measurement module 13. The sheath body 11 is connected to a multi-functional connector 3 via a bending handle 2. A traction wire is connected to the sheath body 11 to control the bending degree of the sheath body 11. Specifically, one end of the traction wire is pre-embedded inside the sheath body 11, and the other end is led out from the sheath body 11 and connected to a traction wire reel 23. The bending of the head end of the sheath body 11 is achieved by rotating the traction wire reel 23. The data acquisition and delivery module 12 and the temperature and pressure measurement module 13 are located at the free end of the sheath body 11. The water injection unit 121 and the optical fiber unit 122 of the data acquisition and delivery module 12 are connected to the multi-functional connector 3 through the optical fiber channel 14 and the water injection channel 15 inside the sheath body 11, respectively. Specifically, the data acquisition and delivery module 12 also includes an illumination unit 123 and a camera unit 124. The temperature and pressure measurement module 13 includes a temperature measurement unit 131 and a pressure measurement unit 132. The temperature and pressure measurement module 13 monitors the temperature and pressure changes during the operation in real time. The lighting unit 123 and the camera unit 124 can transmit the internal image to the external display device to determine the position of the sheath 1, so that the sheath 1 can quickly reach the position required by the doctor, reducing the operation time, thereby reducing the patient's pain and improving the efficiency and safety of the operation.

[0048] Furthermore, such as Figures 12-17 As shown, the multi-functional connector 3 includes a connector body 31, and a water injection connector 32 and an optical fiber insertion connector 33 connected to the connector body 31. The connector body 31 is connected to the sheath tube 1, and the negative pressure channel of the connector body 31 can be connected to an external negative pressure suction device to effectively remove gravel and dirt through the sheath tube body 11 of the sheath tube 1. A negative pressure regulating component 35 is provided on the negative pressure channel to adjust the negative pressure, such as... Figure 12 and Figure 16 As shown, the negative pressure regulating component 35 has a ring-shaped structure, and the negative pressure is adjusted by rotating the negative pressure regulating component 35; as Figure 17As shown, this specific embodiment also provides another structural form, a paddle-shaped negative pressure regulating component 35, which adjusts the negative pressure by moving the negative pressure regulating component 35. The water injection connector 32 is connected to the water injection channel 15, allowing water to be injected. The fiber optic insertion connector 33 is connected to the fiber optic channel 14, allowing fiber optic cable to be inserted for laser lithotripsy. The fiber optic insertion connector 33 is equipped with a Luer connector 34. Simultaneously with laser lithotripsy, medical solution is injected through the Luer connector 34 and the water injection channel 15, allowing lithotripsy and medical solution injection to occur simultaneously.

[0049] The negative pressure suction ureteral guide sheath provided in this embodiment is used as follows: During use, the lighting unit 123 and camera unit 124 are turned on. After entering the patient's body, the position of the sheath body 11 is determined based on the image transmitted by the camera unit 124. The temperature and pressure measurement module 13 monitors the temperature and pressure changes during the procedure in real time. The curvature of the sheath body 11 is adjusted by the traction wire disc 23 until it reaches the desired position. The curvature of the sheath body 11 is then locked by pressing the pressure rod 25. Then, an optical fiber is inserted through the optical fiber insertion connector 33 and the optical fiber channel 14 for lithotripsy. Medication is injected through the Luer connector 34 and the water injection channel 15. Simultaneously, the negative pressure suction device removes the lithotripsy and debris through the sheath body 11.

[0050] Example 2:

[0051] This embodiment provides a method for using the negative pressure suction ureteral guiding sheath in Embodiment 1, including the following steps:

[0052] S1. The lighting unit 123 and the camera unit 124 are turned on in advance, and the camera unit is connected to an external display device. After entering the patient's body, the position of the sheath body 11 is determined according to the image transmitted by the camera unit 124.

[0053] S2. The temperature and pressure changes during the operation are monitored in real time by the temperature and pressure measuring module 13. The curvature of the sheath body 11 is adjusted by the traction wire disc 23 to reach the position required by the doctor. The curvature of the sheath body 11 is locked by pressing the pressure rod 25.

[0054] S3. Optical fiber is inserted through optical fiber insertion connector 33 and optical fiber channel 14 to crush stones. Liquid medicine is injected through Luer connector 34 and water injection channel 15. At the same time, the crushed stones and dirt are sucked out through sheath body 11 by negative pressure suction device.

[0055] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A negative pressure suction ureteral guide sheath, characterized in that, It comprises a sheath tube (1), a bending handle (2) and a multifunctional connector (3) connected in sequence; The sheath tube (1) is communicated through the bending handle (2) and the multifunctional connector (3); The bending handle (2) comprises an upper shell (21), a lower shell (22), a traction wire disc (23) and a locking assembly; The upper shell (21) and the lower shell (22) are connected to form a handle body, the traction wire disc (23) is rotatably installed in a cavity enclosed by the lower shell (22) and the upper shell (21), the traction wire disc (23) is connected to the head end of the sheath tube (1) through a traction wire, and the rotation of the traction wire disc (23) can drive the traction wire to bend the head end of the sheath tube (1); The locking assembly is installed on the traction wire disc (23) and can be changed between a locked state and an unlocked state, when the locking assembly is in the locked state, the traction wire disc (23) and the upper shell (21) are relatively fixed, and when the locking assembly is in the unlocked state, the traction wire disc (23) can rotate relative to the upper shell (21); A clamping groove (211) is formed in the side of the upper shell (21), and the clamping groove (211) comprises a plurality of grooves extending circumferentially along the upper shell (21); The locking assembly comprises a clamping jaw (24) and a pressing rod (25), the clamping jaw (24) is installed on the side of the traction wire disc (23), and the pressing rod (25) is installed on the clamping jaw (24); the clamping jaw (24) comprises two structure jaws (241) integrally formed; the two structure jaws (241) are symmetrically arranged and form an installation groove (242) therebetween, a plurality of protrusions are arranged at the clamping part of the structure jaw (241), and the number of the grooves is greater than the number of the protrusions; The pressing rod (25) is clamped in the installation groove (242), and the connecting end of the pressing rod (25) is larger than the size of the installation groove (242); when locked, the pressing rod (25) is pressed to open the installation groove (242) through the connecting end to make the two structure jaws (241) open upward, the upper structure jaw (241) is close to the clamping groove (211) upward, and the plurality of protrusions at the clamping part are connected in the part of the grooves one by one.

2. The negative pressure suction ureteral guide sheath according to claim 1, characterized in that, A pressing block (251) is arranged at the end of the pressing rod (25) as a connecting end, and the pressing block (251) is clamped in the installation groove (242); two limiting protrusions (243) symmetrically arranged are arranged in the installation groove (242) to prevent the pressing block (251) from separating from the installation groove (242).

3. The negative pressure suction ureteral guide sheath according to claim 1, characterized in that, The sheath tube (1) comprises a sheath tube body (11), a collection and delivery module (12) and a temperature and pressure measurement module (13); The sheath tube body (11) is communicated with the multifunctional connector (3) through the bending handle (2), the traction wire is connected to the sheath tube body (11), and the collection and delivery module (12) and the temperature and pressure measurement module (13) are arranged at the free end of the sheath tube body (11); The optical fiber channel (14) and the water injection channel (15) of the collection and delivery module (12) are communicated with the multifunctional connector (3).

4. The negative pressure suction ureteral guide sheath according to claim 3, characterized in that, The collection and delivery module (12) comprises a water injection unit (121), an optical fiber unit (122), an illumination unit (123) and a camera unit (124); The water injection unit (121) is communicated with the water injection channel (15), and the optical fiber unit (122) is communicated with the optical fiber channel (14).

5. The negative pressure suction ureteral guide sheath according to claim 1, wherein The multifunctional joint (3) comprises a joint body (31), a water injection joint (32) and an optical fiber insertion joint (33); The water injection joint (32) and the optical fiber insertion joint (33) are connected to the joint body (31), and the joint body (31) is communicated with the sheath tube (1).

6. The negative pressure suction ureteral guide sheath according to claim 5, wherein A luer joint (34) is arranged on the optical fiber insertion joint (33); Through the luer joint (34), a drug solution can be injected through the sheath tube (1).

7. The negative pressure suction ureteral guide sheath according to claim 5, wherein A negative pressure adjusting member (35) is arranged on the negative pressure channel of the joint body (31).

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