CN210158636U

CN210158636U - Ureteral sheath

Info

Publication number: CN210158636U
Application number: CN201821999127.9U
Authority: CN
Inventors: 刘红上; 刘红腾
Original assignee: SHANXI RUIKEPU BIOLOGICAL TECHNOLOGY Co Ltd
Current assignee: SHANXI RUIKEPU BIOLOGICAL TECHNOLOGY Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2020-03-20
Anticipated expiration: 2028-11-30

Abstract

The utility model discloses a ureteral sheath, including expansion pipe subassembly, sheath body, the handle body, adjust knob, the expansion pipe subassembly includes expansion pipe and expansion pipe joint, the one end of expansion pipe is connected on expansion pipe joint, expansion pipe joint passes through the buckle and connects on the sheath body, adjust knob one end passes through threaded connection with the sheath body, the adjust knob other end and handle body coupling, the handle body constitutes axial movable structure with sheath body coupling. The utility model discloses a rotatory adjust knob finely tunes the sheath pipe at the volume of advancing and moving back at the operation position, easy operation, inaccurate problem when having avoided preceding sheath fine setting has reduced the use degree of difficulty of ureteral sheath.

Description

Ureteral sheath

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to ureteral sheath.

Background

The ureteral sheath provides an access channel for instruments such as an endoscope and the like used in a ureteroscope operation in clinic, before operation, an expansion tube of the ureteral sheath is used as a guide to be pushed to a preset treatment position together with a sheath body, then the expansion tube is taken out, the instruments such as the endoscope and the like can treat the position needing to be treated through the channel formed by the sheath body, and at the moment, if the position of the sheath body in a body is not proper, an operator needs to adjust according to prejudgment, the adjustment is too fast, the preset position cannot be accurately reached, and the position needing to be treated is easily touched, so that pain is brought to a patient.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a ureteral sheath capable of finely adjusting the telescopic amount.

The method is characterized in that: including expansion pipe subassembly, sheath body, handle body, adjust knob, the expansion pipe subassembly includes expansion pipe and expansion pipe joint, the one end of expansion pipe is connected on expansion pipe joint, and the other end of expansion pipe is the toper tubulose, the aperture clearance fit of expansion pipe external diameter and sheath body, expansion pipe joint passes through the buckle and connects on the sheath body, adjust knob one end passes through threaded connection with the sheath body, the adjust knob other end and handle body coupling, the handle body constitutes axial movable structure with sheath body coupling.

Furthermore, the inner wall of the adjusting knob is provided with internal threads, and the sheath tube body is provided with corresponding external threads matched with the sheath tube body.

Furthermore, the inner wall of the adjusting knob is also provided with a groove, and the handle body is provided with a corresponding bulge matched with the handle body.

Furthermore, the sheath tube body outer wall is equipped with the guide rail, the handle body inner wall is established corresponding recess and is constituted the axial movable structure.

The utility model has the advantages that: the utility model provides a ureteral sheath, the handle is held to people's one hand in the operation process, and the advancing and retreating volume of sheath pipe at the operation position can be finely tuned through rotating the knob to another hand, and easy operation is not accurate problem when having avoided preceding sheath fine setting, has reduced ureteral sheath's the use degree of difficulty.

Drawings

FIG. 1 is a schematic view of the three-dimensional structure of the utility model;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view B-B of FIG. 2;

FIG. 4 is an enlarged view at C of FIG. 3;

FIG. 5 is a cross-sectional view A-A of FIG. 2;

FIG. 6 is a schematic structural view of an adjusting knob;

FIG. 7 is a schematic view of a sheath body structure;

FIG. 8 is a schematic view of the structure of the handle body.

Detailed Description

The contents of the present invention will be further described with reference to specific embodiments, but the embodiments are only preferred embodiments of the present invention, so that all equivalent changes made by the features and principles described in the claims of the present invention are included in the claims of the present invention.

As shown in fig. 1-8, the ureteral sheath comprises an expansion tube assembly 1, a sheath tube body 2, a handle body 3 and an adjusting knob 4, wherein the expansion tube assembly 1 comprises an expansion tube and an expansion tube connector, the expansion tube is inserted into the sheath tube body, the front end of the conical shape of the expansion tube extends out of the front end of the sheath tube body 2, the other end of the expansion tube is connected to the expansion tube connector, the outer diameter of the expansion tube is in clearance fit with the aperture of the sheath tube body 2, the expansion tube connector is connected to the sheath tube body 2 through a buckle, and when the ureteral sheath is inserted, the expansion tube and the sheath tube body 2 are clamped on the sheath tube body 2 through the expansion tube connector, so that the expansion tube and the sheath tube body 2. The handle body 3 is connected on the sheath body 2, and its connected mode is: the outer wall of the sheath tube body 2 is provided with a guide rail 201, and the inner wall of the handle body 3 is provided with a groove 303 matched with the guide rail 201 to form a radial fixed and axial movable structure. One end of the adjusting knob 4 is connected with the sheath tube body 2, and the other end is connected with the handle body 3; the inner wall of one end of the adjusting knob 4 connected with the sheath tube body 2 is provided with a section of internal thread 402, and the outer wall of the sheath tube body 2 is provided with a corresponding external thread 202; the inner wall of one end of the adjusting knob 4 connected with the handle body 3 is provided with a groove 401, and the handle body 3 is provided with a bulge 301 matched with the groove 401.

In the preferred embodiment, the guide rails 201 on the outer wall of the sheath tube 2 are two symmetrically distributed protrusions.

The utility model discloses ureteral sheath practical process: in the flexible ureteroscope operation, the expansion tube and the sheath tube body 2 are inserted into the ureter together, and the expansion tube assembly 1 is withdrawn after the expansion tube and the sheath tube body 2 reach the vicinity of a preset position, and when the insertion depth of the sheath tube body 2 needs to be finely adjusted in the operation process, the advance and retreat amount of the sheath tube at the operation position can be finely adjusted by rotating the adjusting knob 4; under the condition that the handle body 3 is held by an operator, when the adjusting knob 4 is rotated in the positive direction or the negative direction, the groove 401 of the adjusting knob 4 is connected and matched with the protrusion 301 of the handle body 3, so that the adjusting knob 4 does not generate axial displacement relative to the handle body 3, the tooth surface of the external thread 202 of the sheath body 2 is extruded by the tooth surface of the internal thread 402 of the adjusting knob 4 to generate axial displacement relative to the handle body 3, and the groove 303 on the handle body 3 is matched with the guide rail 201 on the sheath body 2, so that the sheath body 2 can only realize axial displacement and does not generate rotary motion relative to the handle body 3, the advance and retreat amount of the sheath at an operation part can be finely adjusted by rotating the adjusting knob 4, and the operation is convenient.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A ureteral sheath, comprising: including expansion pipe subassembly (1), the sheath body (2), the handle body (3), adjust knob (4), the expansion pipe subassembly includes expansion pipe and expansion pipe joint, the one end of expansion pipe is connected on expansion pipe joint, and the other end of expansion pipe is the toper tubulose, the aperture clearance fit of expansion pipe external diameter and sheath body (2), expansion pipe joint passes through the buckle and connects on sheath body (2), threaded connection is passed through with sheath body (2) to adjust knob (4) one end, and adjust knob (4) other end is connected with the handle body (3), the handle body (3) is connected with sheath body (2) and is constituted axial movable structure.

2. The ureteral sheath of claim 1, wherein: the inner wall of the adjusting knob (4) is provided with internal threads, and the sheath tube body (2) is provided with corresponding external threads matched with the sheath tube body.

3. The ureteral sheath of claim 2, wherein: the inner wall of the adjusting knob (4) is also provided with a groove (401), and the handle body (3) is provided with a corresponding bulge (301) matched with the handle body.

4. The ureteral sheath of claim 1, wherein: the outer wall of the sheath tube body (2) is provided with a guide rail, and the inner wall of the handle body (3) is provided with a corresponding groove (303) to form the axially movable structure.