CN114052829B

CN114052829B - Ureter stone removing device

Info

Publication number: CN114052829B
Application number: CN202111183143.7A
Authority: CN
Inventors: 王小康; 向虎成; 孙云; 戴会新; 李菲
Original assignee: Wuhan Weirun Bafang Medical Technology Co ltd
Current assignee: Wuhan Weirun Bafang Medical Technology Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2023-12-19
Anticipated expiration: 2041-10-11
Also published as: CN114052829A

Abstract

The invention discloses a ureter stone removing device. The device comprises a sheath tube, an endoscope, an accessory group, a basket and a handle; the endoscope is configured with a lens and a cable which are deployed in the sheath; the accessory group is provided with a lens accessory and a cable accessory; the lens accessory is configured to be sleeved on the lens, and the cable accessory is configured to be sleeved on the cable and can relatively displace along the cable; and, the lens accessory interfering with the cable accessory at a distal end of the cable; the handle is configured with an actuator; the actuator is configured to push the cable attachment toward the proximal end of the sheath and pull the cable toward the distal end of the sheath. The basket is configured to be partially pushed into the sheath for closure when the lens accessory and the cable accessory interfere. The stone removing device can combine the basket with the endoscope, and effectively reduce the necessary distribution space of the instruments in the sheath.

Description

Ureter stone removing device

Technical Field

The invention relates to the field of medical instruments, in particular to a ureter stone removing device.

Background

Kidney stones affect about 5% of adults in america and are characterized by a lithiated, proliferative, shaped structure, including insoluble or poorly soluble excreted salts. Kidney stones that may migrate through the urinary tract may cause significant pain and may obstruct the flow of urine or act as a focus of infection, both of which may in turn acutely or chronically damage the kidneys.

The stone-taking basket is widely applied to the treatment of the symptoms of stones in different operation fields such as urology surgery, biliary tract and the like, is a surgical instrument frequently used in hard-lens gallbladder-protecting stone-taking operation, can clearly observe stones in the cavity by means of a television monitoring system of an endoscope during operation, stretches into the stone-taking basket from the working cavity of the endoscope, takes out the stones broken by laser, and aims at relieving obstruction, avoiding infection and protecting functions of human organs.

In the prior instrument, the endoscope, the basket and the adjustable structure for bending the sheath are independently arranged in the sheath, so that the occupied space is large, and the endoscope cannot be conveniently observed after being inserted into a human body.

Disclosure of Invention

The embodiment of the invention discloses a ureter stone removing device. Through the stone extraction device in the embodiment, the basket can be combined with the endoscope, so that the occupied space of the endoscope in the sheath tube is effectively reduced; meanwhile, the endoscope can partially extend out of the sheath after the stone removing device is inserted into a human body, so that the observation breadth and definition of the endoscope are improved.

To achieve the above, the device comprises a sheath tube, an endoscope, an accessory set, a basket and a handle; the endoscope is configured with a lens and a cable which are deployed in the sheath; the accessory group is provided with a lens accessory and a cable accessory; the lens accessory is configured to be sleeved on the lens, and the cable accessory is configured to be sleeved on the cable and can relatively displace along the cable; and, the lens accessory interfering with the cable accessory at a distal end of the cable; the handle is configured with an actuator; the actuator is configured to push the cable attachment toward the proximal end of the sheath and pull the cable toward the distal end of the sheath. The basket is configured to be pushed into the closure of the sheath when the lens accessory and the cable accessory interfere.

In some embodiments of the present disclosure, the cable surface is configured with cable armor; the actuator is configured to pull the cable armor toward the distal end of the sheath.

In some embodiments of the present disclosure, the cable armor is configured as a snake bone structure that is bendable and sleeved on the cable; the actuator is configured to drive the bending of the snake bone structure and to pull the snake bone structure entirely toward the distal end of the sheath.

In some embodiments of the present disclosure, the snake bone structure comprises a hollow bend-adjusting section, a steering section, and a bend-adjusting tail section; the bend adjusting section is rotationally connected with the steering section in a first bend adjusting plane; the bending tail section is rotationally connected with the steering section in a second bending plane; the first bending adjustment plane and the second bending adjustment plane are intersected; the cable is sleeved on the bend adjusting section, the steering section and the bend adjusting tail section; the bending adjusting head section is connected with at least two bending adjusting ropes; the actuator is configured to control the rotational connection of the bend-adjusting section and the turn section and/or the rotational connection of the bend-adjusting tail section and the turn section via the bend-adjusting rope, and the actuator is configured to pull the bend-adjusting tail section towards the distal end of the sheath.

In some embodiments of the present disclosure, the turning section is configured with at least two sub-turning sections; the adjacent two sub-steering sections are hinged on respective sub-rotation planes; adjacent two of the sub-rotation planes intersect. In some embodiments of the present disclosure, the actuator is configured to pull the lens accessory toward the distal end of the sheath.

In some embodiments of the present disclosure, the basket is configured with a connector disposed at a proximal end of the lens and at least three memory wires welded at the connector at a proximal end thereof, and a distal end thereof passing over the lens accessory and connected thereto.

In some embodiments of the disclosure, the lens accessory is a lens collar; the lens sleeve ring is tightly sleeved on the lens; the cable accessory is a cable collar; the cable lantern ring is movably sleeved on the cable.

Other features of embodiments of the present invention and advantages thereof will be apparent from the following detailed description of the disclosed exemplary embodiments with reference to the drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a lens structure according to an embodiment;

FIG. 2 is a partial detail view of an embodiment of a stone removal device;

FIG. 3 is a block diagram of cable armor in an embodiment;

fig. 4 is a structural view of the stone removing device in the embodiment.

The drawings are marked: 110. a lens; 120. a cable; 210. a lens collar; 220. a cable collar; 221. a memory wire; 222. a connector; 310. adjusting the elbow section; 320. a turning section; 330. bending the tail section; 340. bending the rope; 350. a lens pushes and pulls a guide wire; 360. the accessory pushes and pulls the guide wire; 400. a sheath.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. Numerous specific details are set forth in the following detailed description in order to provide a thorough understanding of the various described embodiments. It will be apparent, however, to one of ordinary skill in the art that the various described embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail so as not to unnecessarily obscure aspects of the embodiments.

The embodiment discloses a ureter stone removing device for implementing a ureter sleeve stone removing operation. The device can be bent to face the position of the calculus after being inserted into the ureter, and the treatment position can be observed through an endoscope which can extend out of the sheath 400 after being faced to the calculus; in view and in preparation for the stone removal procedure, the endoscope may be returned to the sheath 400 and a basket procedure may be performed on the stone through the basket.

Referring to fig. 1, the device in this embodiment includes a sheath 400, an endoscope, an accessory set and a basket which are fitted inside the sheath 400, and a handle which is fitted outside the sheath 400.

Referring to fig. 1, in the embodiment, the endoscope is composed of a lens 110 and a cable 120. Wherein, the endoscope is arranged at the proximal end of the sheath 400, which is inserted into the human body, and is used for collecting images of ureteral calculus and other diseases after the endoscope extends out of the proximal end of the sheath 400; the cable 120 is connected to the lens 110 at the proximal end of the sheath 400 for transmitting image data to the outside of the body through the sheath 400.

Referring to fig. 2, in the embodiment, the accessory set includes a lens accessory and a cable accessory. The lens accessory is a lens collar 210. The lens collar 210 is fastened to the lens 110 in a snap-fit manner, so as to displace the lens 110 driven by the lens collar 210. Meanwhile, the cable accessory is a cable loop 220, and the cable loop 220 is movably connected with a portion of the cable 120 near the proximal end of the sheath 400, so that the cable loop 220 can flexibly displace along the cable 120. However, when the cross-sectional diameter of the cable collar 220 is similar to the cross-sectional diameter of the lens collar 210, the cable collar 220 will interfere with the end surface of the lens collar 210 away from the proximal end of the sheath 400 when displaced along the cable 120 in the direction toward the proximal end of the sheath 400. When the cable collar 220 is pushed to the proximal end of the sheath 400, the cable collar 220 touches the lens collar 210, so that the lens collar 210 is pushed to the proximal end of the sheath 400; conversely, when the lens collar 210 is pulled back toward the distal end of the sheath 400, the lens collar 210 touches the cable collar 220, and the cable collar 220 is pushed toward the distal end of the sheath 400. When the lens collar 210 is pushed toward the proximal end of the sheath 400, the cable collar 220 is not displaced, and the lens 110 synchronized with the lens collar 210 is extended toward the proximal end of the sheath 400 or beyond.

Further, fig. 2 shows that the basket structure includes four memory wires 221 of nitinol material bundled within a sheath 400 and a connector 222 for welding with the memory wires 221. The connector 222 is disposed at a spaced apart position on the end of the lens 110 near the proximal end of the sheath 400, the proximal ends of the four memory wires 221 are directly welded to the connector 222, and the distal ends span from the periphery of the lens collar 210 and are welded to the cable collar 220.

The memory wire 221 and the connector 222 gradually come out of the sheath 400 as the cable collar 220 is displaced toward the proximal end of the sheath 400. After the memory wire 221 and the connector 222 are removed from the sheath 400, the previously bundled memory wire 221 is deployed around, and the connector 222 binds the deployment of the memory wire 221, so that the connector 222 and the four memory wires 221 form a basket for capturing stones by the user outside the sheath 400. Meanwhile, as the cable collar 220 is displaced toward the distal end of the sheath 400, portions of the memory wire 221 gradually collapse into the sheath 400. In the process of partially constricting the memory metal wire 221 into the sheath 400, the memory metal wire 221 positioned outside the sheath 400 is constricting inwards, so that the whole basket is constricting to be in a closing trend, and the device is used for clamping and capturing the captured stones and even realizing stone breaking.

In addition, two accessory pushing guide wires extending out of the body are connected to the cable collar 220, so that pushing or pulling is realized. Preferably, the pushing or pulling performed by the accessory pushing guide wire is controlled by an actuator of the handle.

Referring to fig. 3, the surface of the cable 120 in the present embodiment is further configured with the cable 120 armor. Specifically, the cable 120 is armored in a bending-adjustable and snake-bone structure sleeved on the cable 120. The snake bone structure consists of a bend adjusting section 310, a steering section 320 and a bend adjusting tail section 330 which are hollow. The bending section 310 and the steering section 320 are rotatably connected by a pin in a first bending plane. The bending tail section and the steering section 320 are rotatably connected through a pin shaft on a second bending plane. At the same time, the first bending plane and the second bending plane are kept vertical. The cable 120 is sequentially sleeved and bound inside the bend section 310, the turn section 320 and the bend tail section 330.

In addition, the cable 120 is armored with four bending cords 340. One end of each of four bending ropes 340 is connected to the bending section 310, and the other end sequentially passes through the steering section 320 and the bending tail section 330 and then is connected to an external handle. When the actuating mechanism of the handle pulls in or slacks a plurality of bending ropes 340, the bending end section 310 and the turning section 320 and the bending tail section 330 and the turning section 320 rotate, so that the cable 120 armored and bound by the cable 120 is bent. Then, the cable 120 bends to enable the lens 110 to bend synchronously to a certain extent, so that the adjustment of the direction of the lens 110 and the common direction of the basket can be realized.

Preferably, the steering section 320 is configured with at least two sub-steering sections 320. Adjacent sub-steering sections 320 are hinged at respective sub-rotational planes. The adjacent two sub-rotation planes remain perpendicular.

Further, the cable 120 is sheathed with two lenses 110 push-pull guide wires. The two lenses 110 push-pull guide wires pass through the bending tail section 330 and the steering section 320 in the same way and then are connected with the bending head section 310. Then the pushing and pulling back of the push-pull guidewire by the actuator of the external handle may cause the lens collar 210 to be pushed proximally of the sheath 400 or pulled back distally of the sheath 400 simultaneously.

Preferably, in this embodiment, the cable collar 220 is sleeved on the elbow adjusting section 310, and the cable collar 120 and the elbow adjusting section 310 are displaced along the length direction, so that the structure of the device at the proximal end of the sheath 400 is more compact.

Preferably, the two accessories of this embodiment push the wire gap through the bend block 310, the turn block 320 and the bend block tail 330 before being connected to the cable collar 220.

Through the technical scheme and the stone removing device shown in fig. 4, when the device is applied to ureteral basket stone removing operation, the device can be implemented through the following steps. Sheath 400 and the endoscope deployed within sheath 400 are first advanced to the ureteral calculus site. The two accessory pushing guide wires are pushed out of the proximal end of the sheath 400 together with the cable sleeve 220 and the lens sleeve 210 by the actuating mechanism of the handle, at this time, the lens 110 and the basket are positioned outside the sheath 400, and the basket naturally returns to a basket structure capable of capturing stones. At this point the location of stones and other conditions in the ureter may be observed through lens 110 outside of sheath 400. In addition, if the lens 110 is far away from the position of the stone or the angle is insufficient, the two lenses 110 can push and pull the guide wires through the actuating mechanism of the handle to push the cable 120 to be communicated with the lens 110 to a position far away from the sheath 400, so that the observation is facilitated; and after the observation of the lens 110 is finished, the two lenses 110 push and pull the guide wires to pull the lens 110 back. If necessary, the cable 120 can also be connected with the sheath 400 to bend towards the calculus in the ureter by tightening one or more of the four bending adjusting ropes 340 to different degrees through the actuating mechanism of the handle. After the stones are captured by the basket, pushing the guide wires through the two cables 120 to enable the lens 110 to return to the sheath 400, pushing the guide wires 360 through the two accessories to enable the cable sleeve 220 to return to the sheath 400, and at the moment, returning of the cable sleeve 220 enables the basket to retract the stones to be clamped.

In addition, the actuator of the handle in this embodiment refers to a general actuator for pulling and pushing the rope and the guide wire in the embodiment, and this is not particularly limited in this embodiment.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A ureter stone removing device is characterized in that,

the device comprises a sheath tube, an endoscope, an accessory group, a basket and a handle;

the endoscope is configured with a lens and a cable which are deployed in the sheath;

the accessory group is provided with a lens accessory and a cable accessory;

the lens accessory is configured to be sleeved on the lens, and the cable accessory is configured to be sleeved on the cable and can relatively displace along the cable; and, the lens accessory interfering with the cable accessory at a distal end of the cable;

the cable surface is provided with cable armor which is of a snake bone structure capable of adjusting bending and sleeved on the cable;

the snake bone structure comprises a bend adjusting head section, a steering section and a bend adjusting tail section which are of hollow structures;

the bend adjusting section is rotationally connected with the steering section in a first bend adjusting plane;

the bending tail section is rotationally connected with the steering section in a second bending plane;

the first bending adjustment plane and the second bending adjustment plane are intersected;

the cable is sleeved on the bend adjusting section, the steering section and the bend adjusting tail section;

the bending adjusting head section is connected with at least two bending adjusting ropes;

the handle is configured with an actuator;

the actuating mechanism is configured to control the rotational connection of the bending adjustment section and the steering section and/or the rotational connection of the bending adjustment tail section and the steering section through the bending adjustment rope, and the actuating mechanism is configured to pull the bending adjustment tail section and the lens accessory towards the distal end of the sheath tube;

the basket is configured with a connector and at least three memory wires, the connector is disposed at the proximal end of the lens, the proximal end of the memory wires is welded to the connector, and the distal end of the memory wires passes over the lens accessory and is connected to the cable accessory.

2. The ureteral lithotomy device of claim 1, wherein,

the steering section is configured with at least two sub-steering sections;

the adjacent two sub-steering sections are hinged on respective sub-rotation planes;

adjacent two of the sub-rotation planes intersect.

3. The ureteral lithotomy device of claim 1, wherein,

the lens accessory is a lens lantern ring; the lens sleeve ring is tightly sleeved on the lens;

the cable accessory is a cable collar; the cable lantern ring is movably sleeved on the cable.