Negative pressure suction ureter guide sheath

Abstract

The invention relates to a negative pressure suction ureter guiding sheath which comprises a sheath tube, a bending adjusting handle and a multifunctional connector which are connected in sequence. The sheathing canal is communicated with the multifunctional joint through the bending adjusting handle; the bending adjusting handle comprises an upper shell, a lower shell, a traction scroll and a locking assembly. The upper shell and the lower shell are connected to form a handle body, the traction wire disc is rotationally installed in a cavity defined by the lower shell and the upper shell, the traction wire disc is connected with the sheathing canal through a traction wire, and the traction wire disc rotates to drive the traction wire to pull the head end of the sheathing canal to be bent. The locking assembly is installed on the traction scroll and can be switched between a locking state and an unlocking state, and when the locking assembly is in the locking state, the traction scroll and the upper shell are relatively fixed; when the locking assembly is in the unlocking state, the traction wire disc can rotate relative to the upper shell, and the operation is convenient and fast, the handle does not need to be continuously operated, the operation burden of a doctor is effectively relieved, and the operation effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a negative pressure suction ureteral guide sheath. Background Art

[0002] Currently, retrograde intrarenal surgery (RIRS) is an advanced minimally invasive surgery for the treatment of kidney stones. It is particularly suitable for treating small stones or stones located in complex areas of the kidney. During the operation, a channel needs to be established to introduce instruments or other operations. The commonly used method to establish the surgical channel is to insert the sheath tube with a ureteroscope in combination with a guidewire to establish the surgical channel.

[0003] During the operation, doctors usually use the surgical channel to insert optical fibers to cooperate with laser lithotripsy to perform lithotripsy, and remove the lithotripsy through the negative pressure suction function on the sheath connector. However, the sheath often cannot be locked when bent, and doctors often need to press the handle continuously, which increases the doctor's operating burden. In addition, some locking mechanisms are complicated to operate, requiring doctors to spend extra time and energy to adjust, which increases the difficulty and risk of the operation and affects the surgical effect. Summary of the invention

[0004] 1. Technical issues to be resolved

[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 that the prior art cannot self-lock or the locking and bending adjustment is not convenient enough, thus affecting the surgical effect.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] The present invention provides a negative pressure suction ureteral guide sheath, comprising a sheath tube, a bending adjustment handle and a multifunctional joint connected in sequence; the sheath tube is connected through the bending adjustment handle and the multifunctional joint; the bending adjustment handle comprises an upper shell body, a lower shell body, a traction wire reel and a locking assembly; the upper shell body and the lower shell body are connected to form a handle body, the traction wire reel is rotatably installed in a cavity enclosed by the lower shell body and the upper shell body, the traction wire reel is connected to the sheath tube through a traction wire, and the rotation of the traction wire reel can drive the traction wire to pull the sheath tube head end to bend; the locking assembly is installed on the traction wire reel and can be switched between a locked state and an unlocked state, when the locking assembly is in the locked state, the traction wire reel and the upper shell body are relatively fixed; when the locking assembly is in the unlocked state, the traction wire reel can rotate relative to the upper shell body.

[0009] Optionally, a slot is provided on the side of the upper shell; the locking assembly includes a claw and a pressure rod; the claw is installed on the side of the traction wire reel, and the pressure rod is installed on the claw; when the traction wire reel is rotated 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 achieving relative fixation of the traction wire reel and the upper shell.

[0010] Optionally, the clamping claw includes two integrally formed structural claws; the two structural claws are symmetrically arranged, and a mounting groove is formed therebetween; the pressure rod is clamped in the mounting groove, and the size of the connecting end of the pressure rod is larger than the size of the mounting groove; when locking, the pressure rod is pressed to open the mounting groove through the connecting end so that the two structural claws open up and down, and the structural claw located above approaches and clamps the clamping slot.

[0011] Optionally, the card slot includes a plurality of grooves extending circumferentially along the upper shell; a plurality of protrusions are provided at the engaging part of the structural claw, and the number of the grooves is greater than the number of the protrusions; when locked, the plurality of protrusions at the engaging part are connected one by one to some of the grooves.

[0012] Optionally, a pressure block as a connecting end is provided at the end of the pressure rod, and the pressure block is clamped in the installation groove; two symmetrically arranged limiting protrusions are provided in the installation groove to prevent the pressure block from escaping from the installation groove.

[0013] Optionally, the sheath includes a sheath body, a collection and delivery module, and a temperature and pressure measurement module; the sheath body is connected to the multi-functional connector via a bending handle, the traction wire is connected to the sheath body, and the collection and delivery module and the temperature and pressure measurement module are arranged at the free end of the sheath body; the water injection unit and the optical fiber unit of the collection 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 acquisition and delivery module also includes a lighting unit and a camera unit.

[0015] Optionally, the multifunctional joint includes a joint body, a water injection joint and a fiber insertion joint; the water injection joint and the fiber insertion joint are connected to the joint body, and the joint body is connected to the sheath.

[0016] Optionally, a Luer connector is provided on the optical fiber insertion connector; the drug solution can be injected through the sheath tube via the Luer connector.

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

[0018] (III) Beneficial effects

[0019] The beneficial effects of the present invention are:

[0020] The negative pressure suction ureteral guide sheath provided by the present invention, when in use, the sheath head end is bent by rotating the traction wire disc through the traction wire, and after reaching the target curvature, the traction wire disc and the upper shell are connected and locked by the locking assembly. The operation is convenient and quick, and there is no need to continuously operate the handle, which effectively reduces the doctor's operating burden and improves the surgical effect. The multifunctional connector can be connected to an external negative pressure suction device to achieve effective suction of gravel and dirt, thereby shortening the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 is a structural exploded diagram of the bending handle in Embodiment 1 of the present invention;

[0023] Figure 3 is a schematic structural diagram of a wire drawing disc in Embodiment 1 of the present invention;

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

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

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

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

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

[0029] Fig. 9 yes Figure 8 The enlarged view of point B in the middle;

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

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

[0032] Fig.12 is a schematic structural diagram of the multifunctional connector in Example 1 of the present invention;

[0033] Fig.13 is a schematic structural diagram of the multifunctional joint in Embodiment 1 of the present invention from another angle;

[0034] Fig.14 yes Fig.13 Schematic diagram of the middle BB section;

[0035] Fig.15 yes Fig.13 Schematic diagram of the CC section;

[0036] Fig.16 is a cross-sectional schematic diagram of another angle of the multifunctional connector in Example 1 of the present invention;

[0037] Fig.17 It is a structural schematic diagram of another negative pressure regulating component on the multifunctional connector in Example 1 of the present invention.

[0038] [Description of Reference Numerals]

[0039] 1: sheath tube; 11: sheath tube body; 12: collection and transportation module; 121: water injection unit; 122: optical fiber unit; 123: lighting unit; 124: camera unit; 13: temperature and pressure measurement module; 131: temperature measurement unit; 132: pressure measurement unit; 14: optical fiber channel; 15: water injection channel;

[0040] 2: bending handle; 21: upper shell; 211: slot; 22: lower shell; 23: traction wire reel; 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: Optical fiber insertion connector; 34: Luer connector; 35: Negative pressure adjustment member. DETAILED DESCRIPTION

[0042] In order to better understand the above technical solution, 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 accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention 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, including a sheath tube 1, a bending handle 2 and a multifunctional connector 3 connected in sequence; the sheath tube 1 is connected to the multifunctional connector 3 via the bending handle 2; the bending handle 2 includes an upper shell 21, a lower shell 22, a traction wire reel 23 and a locking assembly; the upper shell 21 and the lower shell 22 are connected to form a handle body, and the traction wire reel 23 is rotatably installed in the cavity enclosed by the lower shell 22 and the upper shell 21, and the traction wire reel 23 is connected to the sheath tube 1 through a traction wire, and the rotation of the traction wire reel 23 can drive the traction wire to pull the head end of the sheath tube 1 to bend; the locking assembly is installed on the traction wire reel 23 and can be switched between a locked state and an unlocked state. When the locking assembly is in the locked state, the traction wire reel 23 and the upper shell 21 are relatively fixed; when the locking assembly is in the unlocked state, the traction wire reel 23 can rotate relative to the upper shell 21.

[0044] Specifically, when it is used, the traction wire disc 23 is rotated to pull the sheath tube 1 head end to bend through the traction wire, and after reaching the target curvature, the traction wire disc 23 and the upper shell 21 are connected and locked through the locking assembly. The operation is convenient and quick, and there is no need to continuously operate the handle, which effectively reduces the doctor's operating burden and improves the surgical effect. The multifunctional connector 3 can be connected to an external negative pressure suction device to effectively remove gravel and dirt, thereby shortening the operation time.

[0045] Furthermore, if Figure 2-Figure 6 As shown, a slot 211 is provided on the side of the upper shell 21; the locking assembly includes a claw 24 and a pressure rod 25; the claw 24 is installed on the side of the traction wire disc 23, and the pressure rod 25 is installed on the claw 24; when the traction wire disc 23 rotates to the target angle, the claw 24 is opened by pressing the pressure rod 25, so that the claw 24 is close to and engaged with the slot 211, and the locking assembly is in a locked state, so that the traction wire disc 23 and the upper shell 21 are relatively fixed. Specifically, the claw 24 includes two structural claws 241 formed in one piece; the two structural claws 241 are symmetrically arranged, and a mounting groove 242 is formed between the two; the pressure rod 25 is engaged in the mounting groove 242, and the size of the connecting end of the pressure rod 25 is larger than the size of the mounting groove 242; when locked, the pressure rod 25 is pressed to open the mounting groove 242 through the connecting end so that the two structural claws 241 are opened up and down, and the structural claw 241 located at the upper side is close to and engaged with the slot 211. In this specific embodiment, a pressure block 251 serving as a connecting end is provided at the end of the pressure rod 25. The pressure block 251 is clamped in the mounting groove 242, and the pressure block 251 is larger than the size 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 detaching from the mounting groove 242.

[0046] like Figure 3-Figure 6As shown, in this specific embodiment, the card slot 211 includes a plurality of strip-shaped grooves extending along the circumference of the upper shell 21; the engagement part of the structural claw 241 is provided with a plurality of strip-shaped protrusions, and the number of the grooves is greater than the number of the protrusions; when locking, the pressure rod 25 is pressed, and the pressure block 251 penetrates into the installation groove 242 to open the installation groove 242, and the structural claw 241 located above moves upward toward the card slot 211 until the plurality of protrusions at the engagement part are connected to some of the grooves one by one, thereby achieving locking. The plurality of strip-shaped grooves extending along the circumference of the upper shell 21 can meet the locking requirements of various precise angles.

[0047] Furthermore, if Figure 7-Figure 11 As shown, the sheath tube 1 includes 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 connected to the multifunctional connector 3 through the bending handle 2, and the traction wire is connected to the sheath tube body 11 to control the curvature of the sheath tube body 11. Specifically, one end of the traction wire is pre-buried in the sheath tube body 11, and the other end is drawn out from the sheath tube body 11 and connected to the traction wire reel 23, and the head end of the sheath tube body 11 is bent by rotating the traction wire reel 23; 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 water injection unit 121 and the optical fiber unit 122 of the collection and delivery module 12 are connected to the multifunctional connector 3 through the optical fiber channel 14 and the water injection channel 15 in the sheath tube body 11 respectively. Specifically, the collection and delivery module 12 also includes a lighting 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 measuring 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 an 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 and thus reducing the patient's pain, and improving the efficiency and safety of the operation.

[0048] Furthermore, if Figure 12-Figure 17 As shown, the multifunctional 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 member 35 is provided on the negative pressure channel for adjusting the negative pressure, such as Fig.12 and Fig.16 As shown, the negative pressure regulating member 35 is in the form of a ring, and the negative pressure is adjusted by rotating the negative pressure regulating member 35; Fig.17As shown, this specific embodiment also provides another structure of a paddle-shaped negative pressure regulating member 35, and negative pressure adjustment is achieved by toggling the negative pressure regulating member 35. The water injection joint 32 is connected to the water injection channel 15, and water can be injected through the water injection joint 32. The optical fiber insertion joint 33 is connected to the optical fiber channel 14, and an optical fiber can be inserted for laser lithotripsy. A Luer connector 34 is provided on the optical fiber insertion joint 33. While laser lithotripsy is performed, liquid medicine is injected through the Luer connector 34 through the water injection channel 15, and lithotripsy and liquid injection are performed simultaneously.

[0049] The use of a negative pressure suction ureteral guide sheath provided in this embodiment is as follows: when in use, the lighting unit 123 and the camera unit 124 are turned on, and 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, and the temperature and pressure measurement module 13 monitors the temperature and pressure changes during the operation in real time, and adjusts the curvature of the sheath body 11 through the traction wire disc 23. After reaching the position required by the doctor, the curvature of the sheath body 11 is locked by pressing the pressure rod 25. Then, the optical fiber is inserted through the optical fiber channel 14 through the optical fiber insertion connector 33 to crush the stones, and the liquid medicine is injected through the water injection channel 15 through the Luer connector 34, and the crushed stones and dirt are sucked out through the sheath body 11 through the negative pressure suction device.

[0050] Embodiment 2:

[0051] This embodiment provides a method for using the negative pressure suction ureteral guide sheath in Embodiment 1, comprising the steps of:

[0052] S1. Turn on the lighting unit 123 and the camera unit 124 in advance, connect the camera unit to an external display device, and after entering the patient's body, determine the position of the sheath body 11 according to the image transmitted by the camera unit 124.

[0053] S2. Monitor the temperature and pressure changes during the operation in real time through the temperature and pressure measuring module 13, adjust the curvature of the sheath body 11 through the traction wire reel 23 to reach the position required by the doctor, and lock the curvature of the sheath body 11 by pressing the pressure rod 25.

[0054] S3, insert the optical fiber through the optical fiber insertion connector 33 through the optical fiber channel 14 to crush the stones, inject the medicine through the Luer connector 34 through the water injection channel 15, and at the same time use the negative pressure suction device to suck out the crushed stones and dirt through the sheath body 11.

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

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0058] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify 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 adjustment handle (2) and a multifunctional joint (3) which are connected in sequence; The sheath tube (1) is connected to the multifunctional connector (3) via the bending handle (2); The bending handle (2) comprises an upper shell (21), a lower shell (22), a traction wire reel (23) and a locking assembly; The upper shell (21) and the lower shell (22) are connected to form a handle body, and the traction wire reel (23) is rotatably installed in a cavity enclosed by the lower shell (22) and the upper shell (21). The traction wire reel (23) is connected to the head end of the sheath tube (1) through the traction wire. The rotation of the traction wire reel (23) can drive the traction wire to pull the head end of the sheath tube (1) to bend. The locking assembly is mounted on the traction wire reel (23) and can be switched between a locked state and an unlocked state. When the locking assembly is in the locked state, the traction wire reel (23) and the upper shell (21) are relatively fixed; when the locking assembly is in the unlocked state, the traction wire reel (23) can rotate relative to the upper shell (21).

2. The negative pressure suction ureteral guide sheath according to claim 1, characterized in that: A slot (211) is provided on the side of the upper housing (21); The locking assembly comprises a claw (24) and a pressure rod (25); The clamping claw (24) is installed on the side of the traction wire disc (23), and the pressure rod (25) is installed on the clamping claw (24); When the traction wire disc (23) is rotated to a target angle, the clamping claw (24) is opened by pressing the pressure rod (25), so that the clamping claw (24) approaches and engages with the clamping slot (211), and the locking assembly is in a locked state, thereby achieving relative fixation of the traction wire disc (23) and the upper shell (21).

3. The negative pressure suction ureteral guide sheath according to claim 2, characterized in that: The clamping claw (24) includes two structural claws (241) formed in one piece; The two structural claws (241) are symmetrically arranged, and a mounting groove (242) is formed between the two. The pressure rod (25) is clamped in the installation groove (242), and the connection end of the pressure rod (25) is larger than the size of the installation groove (242); when locked, the pressure rod (25) is pressed to open the installation groove (242) through the connection end so that the two structural claws (241) open up and down, and the structural claw (241) located on the upper side approaches and clamps the clamping groove (211).

4. The negative pressure suction ureteral guide sheath according to claim 3, characterized in that: The card slot (211) comprises a plurality of grooves extending along the circumference of the upper shell (21); The engaging part of the structural claw (241) is provided with a plurality of convex parts, and the number of the concave parts is greater than the number of the convex parts; when locked, the plurality of convex parts at the engaging part are connected to some of the concave parts in a one-to-one correspondence.

5. The negative pressure suction ureteral guide sheath according to claim 3, characterized in that: A pressure block (251) serving as a connection end is provided at the end of the pressure rod (25), and the pressure block (251) is clamped in the mounting groove (242); two symmetrically arranged limiting protrusions (243) are provided in the mounting groove (242) to prevent the pressure block (251) from escaping from the mounting groove (242).

6. 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 transportation module (12) and a temperature and pressure measurement module (13); The sheath body (11) is connected to the multifunctional connector (3) via the bending handle (2), the traction wire is connected to the sheath 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 body (11); The optical fiber channel (14) and the water injection channel (15) of the collection and delivery module (12) are connected to the multifunctional connector (3).

7. The negative pressure suction ureteral guide sheath according to claim 6, characterized in that: The collection and delivery module (12) comprises a water injection unit (121), an optical fiber unit (122), a lighting unit (123) and a camera unit (124); The water injection unit (121) is in communication with the water injection channel (15), and the optical fiber unit (122) is in communication with the optical fiber channel (14).

8. The negative pressure suction ureteral guide sheath according to claim 1, characterized in that: 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) and the sheath tube (1) are in communication.

9. The negative pressure suction ureteral guide sheath according to claim 8, characterized in that: A Luer connector (34) is provided on the optical fiber insertion connector (33); The drug solution can be injected through the sheath tube (1) via the Luer connector (34).

10. The negative pressure suction ureteral guide sheath according to claim 8, characterized in that: A negative pressure regulating member (35) is provided on the negative pressure channel of the joint body (31).

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