Auxiliary stone grabbing sheath for nephroscope

Abstract

The utility model relates to the technical field of nephroscope lithotripsy assistance, in particular to a nephroscope auxiliary stone grabbing sheath which comprises a sheath body and a nephroscope connector, a fixing mechanism is arranged in the sheath body, and the fixing mechanism is used for grabbing and fixing stones during lithotripsy; the fixing mechanism comprises a clamping assembly and a control assembly, the control assembly is detachably and fixedly installed at one end of the outer sheath body, and a nephroscope connector connected with a nephroscope in a matched mode is installed at the far end of the control assembly. The clamping assembly is slidably installed at the end, away from the nephroscope connector, of the outer sheath body, and the output end of the control assembly extends into the outer sheath body and is in transmission connection with the clamping assembly. According to the nephroscope lithotripsy device, calculi can be clamped and fixed in the lithotripsy process through matched arrangement of the outer sheath body and the fixing mechanism, so that the nephroscope can accurately lithotripsy through laser, the operation time is shortened, and meanwhile the operation risk that the laser accidentally damages the bladder mucosa in the operation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nephroscope lithotripsy assistance, in particular to a nephroscope-assisted stone-grabbing outer sheath. Background Art

[0002] Bladder stones are a common disease in male patients. Stones blocking the urethra can lead to urinary retention, and in severe cases, secondary hydronephrosis and renal failure can occur. Transurethral lithotripsy is a minimally invasive treatment method for bladder stones currently commonly used in hospitals at all levels. This technology requires the use of a nephroscope and a holmium laser lithotripsy device. At the same time, in order to maintain intraoperative water circulation and protect the surgical field of view, a nephroscope auxiliary sheath is required.

[0003] The outer sheath of the nephroscope currently used in clinical practice can only play a role in water injection. The space inside the bladder is large, and the stones in the bladder will move with the water injection, making it difficult to use the nephroscope to aim at the stones. The operation time is prolonged, time-consuming and labor-intensive, and it is easy to cause bladder damage. Especially for patients with multiple bladder stones, the surgical risk also increases accordingly. Utility Model Content

[0004] The purpose of the utility model is to provide a nephroscope-assisted stone-grasping sheath to solve the problems raised in the above-mentioned background technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A nephroscope-assisted stone-grabbing outer sheath comprises an outer sheath body and a nephroscope connector, wherein the outer sheath body is provided with a fixing mechanism for grasping and fixing stones during lithotripsy;

[0007] The fixing mechanism includes a clamping component and a control component. The control component is detachably fixedly mounted on one end of the outer sheath, and a nephroscope connector that cooperates with the nephroscope is installed on the end away from the nephroscope connector; the clamping component is slidably mounted in the outer sheath at the end away from the nephroscope connector, and the output end of the control component extends into the outer sheath and is transmission-connected with the clamping component.

[0008] Furthermore, the control assembly includes a hollow column fixedly connected to the outer sheath, and the nephroscope connector is fixedly mounted on one end of the hollow column away from the outer sheath;

[0009] Two symmetrically arranged sliding grooves are provided on the periphery of the hollow column, and a second circular ring is slidably installed between the inner walls of the hollow column. Two symmetrically arranged wrenches are fixedly connected to the periphery of the second circular ring. The ends of the two wrenches away from the second circular ring respectively pass through the two sliding grooves to the outside of the hollow column, and the wrenches are in sliding contact with the sliding grooves;

[0010] Two symmetrically distributed metal strips are fixedly connected to the side of the second circular ring close to the outer sheath. One end of the two metal strips away from the second circular ring extends into the outer sheath and is fixedly connected to the clamping assembly.

[0011] Furthermore, an indicator arrow is provided on the periphery of the hollow column along the length direction of the slide groove.

[0012] Furthermore, the clamping assembly includes a circular ring 1 slidably mounted between the inner wall of the outer sheath, and one end of the two metal strips away from the circular ring 2 is fixedly connected to a side of the circular ring 1 close to the hollow column;

[0013] A plurality of hooks arranged in an array circumferentially about the axis of the ring 1 are fixedly connected to the side of the ring 1 away from the hollow column;

[0014] The hook is made of elastic metal.

[0015] Furthermore, an inner sheath is fixedly connected between the through hole of the second circular ring and the through hole of the first circular ring.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model can clamp and fix stones during the lithotripsy process through the coordinated arrangement of the outer sheath and the fixing mechanism, so that the nephroscope can use laser to accurately break up stones, shorten the operation time, and reduce the surgical risk of accidentally damaging the bladder mucosa with the laser during the operation.

[0018] 2. The coordinated arrangement of the control assembly and the clamping assembly in the fixing mechanism facilitates the clamping and releasing operations of the stones, thereby improving the practicality of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0020] Figure 1 It is a schematic structural diagram of the utility model as a whole;

[0021] Figure 2 yes Figure 1 Enlarged view of part A;

[0022] Figure 3 This is a schematic diagram of the structure inside the outer sheath of the utility model;

[0023] Figure 4 yes Figure 3 Enlarged view of part B;

[0024] Figure 5 yes Figure 3 Enlarged view of part C;

[0025] The accompanying drawings are numerals as follows:

[0026] 1-outer sheath, 2-nephroscope connector, 3-hollow column, 4-slide groove, 5-wrench, 6-indicator arrow, 7-metal strip, 8-inner sheath, 9-hook, 10-ring one, 11-ring two. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1:

[0029] See also Figures 1 to 5 In an embodiment of the present invention, a nephroscope-assisted stone-grabbing outer sheath comprises an outer sheath body 1 and a nephroscope connector 2. The outer sheath body 1 is provided with a fixing mechanism for grasping and fixing stones during lithotripsy.

[0030] The fixing mechanism includes a clamping component and a control component. The control component is detachably fixedly mounted on one end of the outer sheath 1, and a nephroscope connector 2 that is connected to the nephroscope is installed on the end of the control component away from 1; the clamping component is slidably mounted on the end of the outer sheath 1 away from the nephroscope connector 2, and the output end of the control component extends into the outer sheath 1 and is transmission-connected to the clamping component.

[0031] The control assembly includes a hollow column 3 fixedly connected to the outer sheath 1, and a nephroscope connector 2 is fixedly installed on one end of the hollow column 3 away from the outer sheath 1;

[0032] Two symmetrically arranged chutes 4 are provided on the periphery of the hollow column 3. A second circular ring 11 is slidably mounted between the inner walls of the hollow column 3. Two symmetrically arranged wrenches 5 are fixedly connected to the periphery of the second circular ring 11. The ends of the two wrenches 5 away from the second circular ring 11 respectively pass through the two chutes 4 to the outside of the hollow column 3, and the wrenches 5 are in sliding contact with the chutes 4.

[0033] Two symmetrically distributed metal strips 7 are fixedly connected to the side of the second circular ring 11 close to the outer sheath 1. The two metal strips 7 extend into the outer sheath 1 at one end away from the second circular ring 11 and are fixedly connected to the clamping assembly.

[0034] Indicating arrows 6 are provided on the periphery of the hollow column 3 along the length direction of the chute 4 .

[0035] The clamping assembly includes a ring 10 slidably mounted between the inner walls of the outer sheath 1, and two metal strips 7 are fixedly connected to one side of the ring 10 close to the hollow column 3 at one end away from the ring 2 11;

[0036] A plurality of hooks 9 are fixedly connected to the side of the ring 10 away from the hollow column 3 and arranged in an array circumferentially about the axis of the ring 10;

[0037] The hook 9 is made of elastic metal.

[0038] Among them, the inner sheath 8 is fixedly connected between the through hole of the ring 2 11 and the through hole of the ring 1 10.

[0039] When the utility model is in use:

[0040] The nephroscope is passed through the nephroscope connector 2, the second ring 11, the inner sheath 8 and the first ring 10 in sequence, and then the stability of the nephroscope is ensured by the connection between the nephroscope connector 2 and the nephroscope;

[0041] Before crushing the stone, the control component is used to control the clamping component to clamp and fix the target stone. Specifically, the wrench 5 drives the ring 2 11 to slide in the direction close to the outer sheath 1. The sliding of the ring 2 11 drives the ring 10 to slide accordingly in the outer sheath 1 through the metal bar 7. During the process, the distance between the ends of the multiple hooks 9 away from the ring 10 gradually increases. When the multiple hooks 9 surround the periphery of the target stone, the wrench 5 is slid in the opposite direction to make the ring 10 reset and slide. The multiple hooks 9 will be tightened, thereby grasping and clamping the target stone, and then the target stone is crushed through the nephroscope.

[0042] Therefore, the utility model can clamp and fix the stones during the lithotripsy process through the coordinated setting of the outer sheath 1 and the fixing mechanism, so that the nephroscope can use laser to accurately crush the stones, shorten the operation time, and reduce the surgical risk of accidentally damaging the bladder mucosa with the laser during the operation.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A nephroscope-assisted stone-grasping sheath, comprising an outer sheath body (1) and a nephroscope connector (2), characterized in that: The outer sheath (1) is provided with a fixing mechanism, which is used to grab and fix the stones during lithotripsy; The fixing mechanism comprises a clamping assembly and a control assembly, wherein the control assembly is detachably fixedly mounted on one end of the outer sheath (1), and a nephroscope connector (2) for connecting with a nephroscope is mounted on the end of the control assembly away from 1; the clamping assembly is slidably mounted on the end of the outer sheath (1) away from the nephroscope connector (2), and the output end of the control assembly extends into the outer sheath (1) and is transmission-connected to the clamping assembly.

2. A nephroscope-assisted stone-grasping sheath according to claim 1, characterized in that: The control assembly comprises a hollow column (3) fixedly connected to the outer sheath (1), and the nephroscope connector (2) is fixedly mounted on one end of the hollow column (3) away from the outer sheath (1); Two symmetrically arranged chute (4) are provided on the periphery of the hollow column (3), a second circular ring (11) is slidably installed between the inner walls of the hollow column (3), and two symmetrically arranged wrenches (5) are fixedly connected to the periphery of the second circular ring (11), and one end of the two wrenches (5) away from the second circular ring (11) passes through the two chute (4) to the outside of the hollow column (3), and the wrenches (5) are in sliding contact with the chute (4); Two symmetrically distributed metal strips (7) are fixedly connected to the side of the second circular ring (11) close to the outer sheath (1), and the two metal strips (7) extend into the outer sheath (1) at one end away from the second circular ring (11) and are fixedly connected to the clamping assembly.

3. A nephroscope-assisted stone-grasping sheath according to claim 2, characterized in that: An indicator arrow (6) is provided on the periphery of the hollow column (3) along the length direction of the chute (4).

4. A nephroscope-assisted stone-grasping sheath according to claim 2, characterized in that: The clamping assembly comprises a circular ring (10) slidably mounted between the inner walls of the outer sheath (1), and the ends of the two metal strips (7) away from the circular ring (11) are fixedly connected to the side of the circular ring (10) close to the hollow column (3); A plurality of hooks (9) arranged in an array circumferentially about the axis of the circular ring (10) are fixedly connected to the side of the circular ring (10) away from the hollow column (3); The hook (9) is made of elastic metal.

5. A nephroscope-assisted stone-grasping sheath according to claim 4, characterized in that: An inner sheath (8) is fixedly connected between the through hole of the second circular ring (11) and the through hole of the first circular ring (10).

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