CN219440351U

CN219440351U - Guiding sheath with adjustable bending angle

Info

Publication number: CN219440351U
Application number: CN202320165762.1U
Authority: CN
Inventors: 贺亦峰; 李亚承
Original assignee: Hunan Reborn Medical Science And Technology Development Co ltd
Current assignee: Hunan Reborn Medical Science And Technology Development Co ltd
Priority date: 2023-02-02
Filing date: 2023-02-02
Publication date: 2023-08-01
Anticipated expiration: 2033-02-02

Abstract

The utility model discloses an adjustable bending angle guiding sheath, which comprises a bendable sheath tube, wherein a channel for an endoscope to enter and exit is formed in the sheath tube, the rear end of the sheath tube is connected with a guiding sheath connector, an adjusting structure for adjusting the bending angle of the sheath tube is arranged on the guiding sheath connector, the adjusting structure comprises a first traction wire, a second traction wire and an adjusting sliding block, one end of the first traction wire and one end of the second traction wire are symmetrically connected on the inner wall of the front end of the sheath tube, and the other end of the first traction wire and the other end of the second traction wire extend to the inner cavity of the guiding sheath connector to be connected and tensioned through a wire wheel. According to the utility model, the adjusting slide block, the first traction wire and the second traction wire are arranged, the left-right bending direction and the angle of the sheath tube are flexibly controlled by changing the front-back travel of the adjusting slide block, so that the angle of the sheath tube can easily cross the ureter of the renal pelvis, the sheath tube is safely placed into the renal pelvis, the operation efficiency and the operation effect are effectively improved, and the experience of an operator is greatly improved.

Description

Guiding sheath with adjustable bending angle

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an guiding sheath with an adjustable bending angle.

Background

The guiding sheath is a medical instrument commonly used in urology surgery and is used for a surgical channel without a vertical surgical instrument, in ureteroscope lithotomy, the guiding sheath enters a patient in advance and directly enters the vicinity of a focus part under development so as to assist an endoscope and other instruments to enter a urologic cavity channel and provide a continuous operation channel for the endoscope and other instruments. The ureter can be protected when the instrument is repeatedly exchanged, the trauma to the ureter is reduced, and the precise instrument is protected from being damaged.

At present, the sheath tube of the ureter guiding sheath is made of flexible materials, the front end of the sheath tube can be passively bent when being abutted against the flexible ureter wall, but the flexible ureter guiding sheath is passively bent along with an endoscope, an operator cannot control the bending angle of the flexible ureter guiding sheath subjectively, and the angle of the flexible ureter guiding sheath needs to be adjusted repeatedly in the operation process, so that the operation time is delayed, the anesthesia risk of a patient is increased, and the experience of the operator is influenced.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide the guide sheath with the adjustable bending angle, so that the problem that the flexible ureter guide sheath in the prior art cannot control the bending angle is solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a bending angle adjustable guiding sheath, includes flexible sheath pipe, offer the passageway that is used for the endoscope business turn over in the sheath pipe, the rear end of sheath pipe is connected with guiding sheath joint, guiding sheath connects and installs the regulation structure that is used for adjusting sheath pipe bending angle, regulation structure includes first haulage line, second haulage line and regulation slider, the one end symmetry of first haulage line and second haulage line is connected on the inner wall of sheath pipe near the front end, the other end of first haulage line and second haulage line extends to guiding sheath joint inner chamber and connects and tensioning through the reel, the opening has been seted up along length direction on the guiding sheath joint, regulation slider lower extreme passes opening and first haulage line or second haulage line fixed connection, regulation slider is along opening slidable.

As a further improvement of the above technical scheme:

the first traction wire is adhered to the inner wall of the sheath near the front end right side through the fixing glue, and the second traction wire is symmetrically adhered to the inner wall of the sheath near the front end left side through the fixing glue.

The adjusting slide block comprises an adjusting block positioned at the outer side of the guiding sheath connector and a sliding block positioned in the inner cavity of the guiding sheath connector, the adjusting block and the sliding block are integrally formed, the sliding block is fixedly connected with the first traction wire or the second traction wire, and the sliding block can slide along the opening.

The outer surface of the adjusting block is provided with anti-skid patterns.

The two ends of the inner cavity of the sheath connector are fixedly provided with mounting seats, a sliding rod is arranged between the mounting seats, and the sliding block penetrates through the opening to be in sliding connection with the sliding rod.

The number of the sliding rods is two.

The first through holes are formed in the mounting seats on the two outer sides of the sliding rod, the second through holes parallel to the first through holes on the same side are formed in one side of the sliding block, one end, far away from the sheath tube, of the first traction wire penetrates through the first through holes on the same side and the second through holes, the second traction wire penetrates through the first through holes on the other side to be connected with the first traction wire, the wire wheel tightens the first traction wire and the second traction wire, and the first traction wire and the second through holes Kong Jiaoge are formed in the wire wheel.

The outer surface of the front end of the sheath tube is a conical surface.

The side of the sheath connector is provided with a negative pressure suction pipe which is communicated with the inner cavity of the sheath connector.

The sheath tube is made of medical plastic materials.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the adjusting slide block, the first traction wire and the second traction wire are arranged, the left-right bending direction and the angle of the sheath tube are flexibly controlled by changing the front-back travel of the adjusting slide block, so that the angle of the sheath tube can easily cross the ureter of the renal pelvis, the sheath tube is safely placed into the renal pelvis, the operation efficiency and the operation effect are effectively improved, and the experience of an operator is greatly improved.

2. The utility model has the advantages of compact structure, small volume, convenient use, low production cost and the like, has very strong practicability and can be widely popularized.

Drawings

FIG. 1 is a schematic view of the overall structure of one direction of the present utility model;

FIG. 2 is a schematic view of the overall structure of the present utility model in another direction;

FIG. 3 is a schematic view of an opening structure of the present utility model;

FIG. 4 is a schematic view of the internal structure of the adaptor of the present utility model;

in the figure: 1. a sheath; 101. conical surface; 2. a channel; 3. a sheath adaptor; 4. an adjustment structure; 41. a first traction wire; 42. a second traction wire; 43. an adjusting slide block; 431. an adjusting block; 432. a sliding block; 5. a wire wheel; 6. an opening; 7. a mounting base; 71. a first through hole; 8. a slide bar; 9. a second through hole; 10. negative pressure suction pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The related circuits, electronic components and modules are all in the prior art, and can be completely implemented by those skilled in the art, and needless to say, the protection of the present application does not relate to improvements of software and methods.

As shown in fig. 1 and 4, the guiding sheath with adjustable bending angle of the present embodiment includes a bendable sheath tube 1, a channel 2 for an endoscope to enter and exit is provided in the sheath tube 1, a guiding sheath connector 3 is connected to the rear end of the sheath tube 1, an adjusting structure 4 for adjusting the bending angle of the sheath tube 1 is mounted on the guiding sheath connector 3, the adjusting structure 4 includes a first traction wire 41, a second traction wire 42 and an adjusting slider 43, one ends of the first traction wire 41 and the second traction wire 42 are symmetrically connected to the inner wall of the sheath tube 1 near the front end, the other ends of the first traction wire 41 and the second traction wire 42 extend to the inner cavity of the guiding sheath connector 3 and are tensioned by a wire wheel 5, an opening 6 is provided on the guiding sheath connector 3 along the length direction, the lower end of the adjusting slider 43 passes through the opening 6 and is fixedly connected with the first traction wire 41 or the second traction wire 42, and the adjusting slider 43 is slidable along the opening 6. The guide sheath is matched with accessories (a dilating tube and a guide wire) for use, and is applied to the endoscopic examination and operation of the urinary system to establish a channel so as to facilitate the endoscope or other instruments to enter the urinary tract. The outer surface of a sheath tube 1 of the guiding sheath is covered with a hydrophilic coating, the main material of the hydrophilic coating is polyvinylpyrrolidone, the lining material is Teflon (PTFE), nylon (PEBAX) and stainless steel wires (304), and when a force is applied to the sheath tube 1, the sheath tube 1 is easy to bend to be arc-shaped, and the diameter of a channel 2 is kept unchanged. When the device is used, an operator slides the adjusting slide block 43 back and forth, the adjusting slide block 43 drives the first traction wire 41 or the second traction wire 42 to move around the reel 5, the left and right direction bending and bending angle adjustment of the sheath tube 1 are realized through the front and back stroke change of the adjusting slide block 43, the sheath tube 1 is fixed at a certain position according to the needs, the position of the sheath tube 1 does not need to be adjusted through an endoscope repeatedly, the problem that the bending angle of the guiding sheath in the prior art cannot be effectively controlled is solved, the angle of the guiding sheath needs to be adjusted repeatedly in the operation process, and the anesthesia risk of a patient is increased.

In this embodiment, the first traction wire 41 is adhered to the inner wall of the sheath tube 1 near the right side of the front end by the fixing glue, and the second traction wire 42 is symmetrically adhered to the inner wall of the sheath tube 1 near the left side of the front end by the fixing glue.

In this embodiment, the adjusting slider 43 includes an adjusting block 431 located at the outer side of the guiding sheath connector 3 and a sliding block 432 located in the inner cavity of the guiding sheath connector 3, the adjusting block 431 and the sliding block 432 are integrally formed, the sliding block 432 is fixedly connected with the first traction wire 41 or the second traction wire 42, the sliding block 432 is slidable along the opening 6, and the adjusting block 431 is disposed at the outer side of the guiding sheath connector 3, so that an operator can adjust the guiding sheath connector conveniently by one hand.

In this embodiment, the outer surface of the adjusting block 431 is provided with anti-skid patterns.

In this embodiment, the two ends of the inner cavity of the sheath connector 3 are fixedly provided with mounting seats 7, a sliding rod 8 is arranged between the mounting seats 7, and a sliding block 432 passes through the opening 6 to be in sliding connection with the sliding rod 8. The slide bar 8 guides the slide block 432, and the mount 7 supports the slide bar 8 so that the slide block 432 moves forward and backward in balance along the slide bar 8.

In this embodiment, the number of the sliding bars 8 is two, and the two sliding bars 8 are arranged up and down.

In this embodiment, the mounting seats 7 on two outer sides of the sliding rod 8 are provided with first through holes 71, one side of the sliding block 432 is provided with second through holes 9 parallel to the first through holes 71 on the same side, one end of the first traction wire 41 far away from the sheath tube 1 passes through the first through holes 71 and the second through holes 9 on the same side, the second traction wire 42 passes through the first through holes 71 on the other side to be connected with the first traction wire 41, and the wire wheel 5 tightens the first traction wire 41 and the second traction wire 42, so that the first traction wire 41 and the second through holes 9 are glued. The first through hole 71 performs limit guiding of the movement of the first traction wire 41 and the second traction wire 42. In specific use, the adjusting block 431 moves forward (near one end of the sheath tube 1), the sliding block 432 pulls the first pulling wire 41 forward, the second pulling wire 42 applies a pulling force to the front end of the sheath tube 1, the sheath tube 1 is bent leftward (outwards), the adjusting block 431 moves reversely, and in particular, the adjusting block 431 moves for 10mm, and the bending angle of the sheath tube 1 changes by 90 ° towards the corresponding direction.

In this embodiment, the outer surface of the front end of the sheath tube 1 is a conical surface 101, and since the guiding sheath is in a advancing process and the ureter is in a contracted state, the ureter is in an expanded state after the guiding sheath passes, therefore, the conical surface 101 is arranged at the front end of the sheath tube 1, and the guiding sheath has a good development effect and reduces the damage of the ureter.

In this embodiment, a negative pressure suction pipe 10 is arranged on the side surface of the sheath connector 3, and the negative pressure suction pipe 10 is communicated with the inner cavity of the sheath connector 3.

In the embodiment, the sheath tube 1 is made of medical plastic materials, and the surface of the sheath tube is coated with a hydrophilic coating, so that the sheath tube can smoothly enter the ureter, is low in cost and disposable, and can effectively prevent cross infection.

The specific operation steps are as follows: a. delivering a guidewire wetted with physiological saline to a predetermined site under X-ray or fluoroscopic monitoring; b. inserting the tip of the dilating catheter into the ureter along the guide wire, pre-dilating the dilating catheter through the narrow part under the monitoring of X-ray or perspective, and withdrawing the dilating catheter after the dilating is finished; c. the withdrawn expansion tube and the guide sheath are combined, the expansion tube and the guide sheath are placed into the ureter along the guide wire under the monitoring of X-ray or perspective, the thumb pushes the adjusting block 431 and the sliding block 432 to move forwards and backwards in the advancing process, the bending of the sheath tube 1 in the left-right direction and the adjustment of the bending angle can be realized (the adjusting block 431 moves by 10mm, the bending angle of the sheath tube 1 changes by 90 degrees towards the corresponding direction) can be realized, and after the expansion tube reaches a preset position, the expansion tube is withdrawn along the guide wire, and the guide sheath is placed completely, so that the operation is performed; d. after the operation is finished, slowly withdrawing the guide wire and the ureter guide sheath; after the disposable ureter guiding sheath is used, the disposable ureter guiding sheath is properly treated according to the disposable medical supplies.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides an adjustable guiding sheath of bending angle, includes flexible sheath pipe (1), offer passageway (2) that are used for endoscope business turn over in sheath pipe (1), the rear end of sheath pipe (1) is connected with guiding sheath joint (3), install on guiding sheath joint (3) and be used for adjusting sheath pipe (1) bending angle's regulation structure (4), regulation structure (4) include first haulage line (41), second haulage line (42) and regulation slider (43), the one end symmetrical connection of first haulage line (41) and second haulage line (42) is on sheath pipe (1) is near the front end inner wall, the other end of first haulage line (41) and second haulage line (42) extends to guiding sheath joint (3) inner chamber joint and stretches up through wire wheel (5), opening (6) have been seted up along length direction on guiding sheath joint (3), regulation slider (43) lower extreme passes opening (6) and first haulage line (41) or second haulage line (42) fixed connection, regulation slider (43) are along opening (6).

2. The guiding sheath with adjustable bending angle according to claim 1, wherein the first traction wire (41) is adhered to the inner wall of the sheath tube (1) near the front end right side through fixing glue, and the second traction wire (42) is symmetrically adhered to the inner wall of the sheath tube (1) near the front end left side through fixing glue.

3. The guiding sheath with adjustable bending angle according to claim 2, wherein the adjusting slider (43) comprises an adjusting block (431) positioned at the outer side of the guiding sheath joint (3) and a sliding block (432) positioned in the inner cavity of the guiding sheath joint (3), the adjusting block (431) and the sliding block (432) are integrally formed, the sliding block (432) is fixedly connected with the first traction wire (41) or the second traction wire (42), and the sliding block (432) is slidable along the opening (6).

4. A bending-angle-adjustable guide sheath according to claim 3, characterized in that the outer surface of the adjusting block (431) is provided with anti-slip threads.

5. The guiding sheath with adjustable bending angle according to claim 4, wherein mounting seats (7) are fixedly arranged at two ends of the inner cavity of the guiding sheath connector (3), sliding rods (8) are arranged between the mounting seats (7), and the sliding blocks (432) penetrate through the openings (6) to be in sliding connection with the sliding rods (8).

6. The guiding sheath with adjustable bending angle according to claim 5, characterized in that the number of sliding bars (8) is two.

7. The guiding sheath with adjustable bending angle according to claim 6, characterized in that a first through hole (71) is formed in the mounting seat (7) at two outer sides of the sliding rod (8), a second through hole (9) parallel to the first through hole (71) at the same side is formed in one side of the sliding block (432), one end of the first traction wire (41) far away from the sheath tube (1) penetrates through the first through hole (71) and the second through hole (9) at the same side, the second traction wire (42) penetrates through the first through hole (71) at the other side to be connected with the first traction wire (41), the wire wheel (5) tightens the first traction wire (41) and the second traction wire (42), and the first traction wire (41) and the second through hole (9) are glued.

8. The guiding sheath with adjustable bending angle according to claim 7, wherein the outer surface of the front end of the sheath tube (1) is a conical surface (101).

9. The guiding sheath with adjustable bending angle according to claim 8, wherein a negative pressure suction pipe (10) is arranged on the side surface of the guiding sheath joint (3), and the negative pressure suction pipe (10) is communicated with the inner cavity of the guiding sheath joint (3).

10. The guiding sheath with adjustable bending angle according to claim 9, characterized in that the sheath tube (1) is made of medical plastic material.