CN219501090U - Plugging device - Google Patents

Abstract

The utility model relates to an occlusion device comprising an occlusion element, a catheter, a guide wire and a sheath. The blocking piece is provided with a fixed end and a fixed end, wherein the fixed end and the movable end are oppositely arranged along a first direction, and the fixed end of the blocking piece is connected with the movable end through a conduit. The guide wire movably penetrates through the fixed end of the catheter and the blocking piece, and is connected with the movable end of the blocking piece to drive the movable end to be close to or far away from the fixed end along the first direction, so that the blocking piece can be unfolded in the direction perpendicular to the first direction to be in an unfolded state or contracted to be in a contracted state. The sheath is movably sleeved outside the catheter, and the sheath is configured to accommodate the blocking member in a contracted state. Above-mentioned plugging device has plugging piece regulatory function and plugging piece receive and release function concurrently, has guaranteed that the plugging piece can laminate patient ureter inner wall and do not cause too big pressure, has avoided the urethra and the ureter of fish tail patient when the plugging piece gets into and withdraws from the human body cavity, has further reduced operation degree of difficulty and patient treatment risk.

Description

Plugging device

Technical Field

The utility model relates to the technical field of urological surgical instruments, in particular to a plugging device.

Background

Ureteral calculus is one of the common diseases of urinary surgery. In the lithotripsy operation process, ureteral cavity behind the calculus is blocked by the blocking device to prevent the calculus from being backflushed back to the kidney. In the related art, some occlusion devices can adjust the state of the occlusion member to the size of the patient ureter to ensure that the occlusion member can conform to the inner wall of the patient ureter and not cause excessive pressure. Some occlusion devices are capable of receiving the occluding component within the sheath upon entry and exit from the body lumen to avoid the occluding component from scratching the patient's urethra and ureter. However, at present, there is no plugging device with plugging piece adjusting function and plugging piece retracting function, and the operation difficulty and the treatment risk of patients cannot be further reduced.

Disclosure of Invention

Based on this, it is necessary to provide a plugging device with both plugging piece adjusting function and plugging piece retracting function, so as to reduce the operation difficulty and the treatment risk of patients.

The embodiment of the utility model provides a plugging device, which comprises:

the plugging piece is provided with a fixed end and a movable end which are oppositely arranged along a first direction;

a conduit connecting the fixed ends of the plugs;

the guide wire is movably arranged on the catheter and the fixed end of the plugging piece in a penetrating manner, and is connected with the movable end of the plugging piece so as to drive the movable end to be close to or far away from the fixed end along the first direction, so that the plugging piece can be unfolded in a direction perpendicular to the first direction to be in an unfolded state or contracted to be in a contracted state; and

the sheath is movably sleeved outside the catheter and is configured to accommodate the plugging piece in the contracted state.

In one embodiment, the occlusion device further comprises an operating mechanism;

the operating mechanism is respectively connected with the catheter, the guide wire and the sheath;

the operating mechanism is configured to drive movement of the guidewire and the sheath relative to the catheter.

In one embodiment, the operating mechanism includes a grip, a first operating member, and a second operating member;

the holding piece is fixedly connected with the catheter;

the first operation piece is fixedly connected with the guide wire so as to drive the guide wire to move relative to the catheter;

the second operating piece is fixedly connected with the sheath tube so as to drive the sheath tube to move relative to the catheter.

In one embodiment, the first operating member is in sliding engagement with the grip member.

In one embodiment, the second operating member is in sliding engagement with the grip member.

In one embodiment, the occlusion device further comprises a support tube;

the support tube is fixedly connected with the holding piece, and the support tube is sleeved outside the catheter.

In one embodiment, the closure is configured as one of a basket, balloon, or blade.

In one embodiment, the occlusion device further comprises a guide;

the guide member is connected to the free end of the closure member.

In one embodiment, the inner diameter of the sheath is greater than the maximum outer diameter of the occluding component in the contracted state.

In one embodiment, the outer diameter of the guidewire is less than the inner diameter of the catheter;

the catheter has an outer diameter less than an inner diameter of the sheath.

Above-mentioned plugging device passes through the stiff end of pipe fixed shutoff piece, through the expansion and the shrink of the seal piece of the seal wire control of movably wearing to locate the pipe, guaranteed that the seal piece can laminate patient ureter inner wall and do not cause too big pressure. The release and recovery of the blocking piece are controlled through the sheath tube movably sleeved outside the catheter, so that the urethra and ureter of a patient are prevented from being scratched when the blocking piece enters and exits from the body cavity. The plugging device has the plugging piece adjusting function and the plugging piece collecting and releasing function, and the operation difficulty and the treatment risk of patients are further reduced.

Drawings

FIG. 1 is a schematic view of an occlusion device in an expanded state according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the occluding device shown in FIG. 1 in a contracted state;

FIG. 3 is a schematic view of a plugging device according to another embodiment of the present utility model;

FIG. 4 is a schematic view of the operating mechanism of the occluding device of FIG. 3;

fig. 5 is a partial enlarged view at a in fig. 4.

Reference numerals illustrate:

1. a blocking member; 11. a fixed end; 12. a movable end; 2. a conduit; 3. a guide wire; 4. a sheath; 5. an operating mechanism; 51. a grip; 511. a catheter fixing section; 52. a first operating member; 53. a second operating member; 6. a guide.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

FIG. 1 is a schematic view showing the structure of an occlusion device in an expanded state according to an embodiment of the present utility model; fig. 2 shows a schematic view of the occlusion device of fig. 1 in a contracted state.

Referring to fig. 1 and 2, an embodiment of the present utility model provides an occlusion device comprising an occlusion member 1, a catheter 2, a guidewire 3 and a sheath 4. The closure 1 has a fixed end 11 and a movable end 12 which are arranged opposite one another in a first direction (direction a in the drawing). The catheter 2 is connected to the fixed end 11 of the closure 1. The guide wire 3 movably penetrates through the catheter 2 and the fixed end 11 of the plugging piece 1, the guide wire 3 is connected with the movable end 12 of the plugging piece 1 to drive the movable end 12 to be close to or far away from the fixed end 11 along the first direction, so that the plugging piece 1 can be unfolded in a direction perpendicular to the first direction to be in an unfolded state or contracted to be in a contracted state. The sheath tube 4 is movably sleeved outside the catheter 2, and the sheath tube 4 is configured to accommodate the plugging piece 1 in a contracted state.

Specifically, the lithotripsy procedure employing the occlusion device is as follows: a ureteroscope (not shown) is advanced from the urethra into the body to the point of the stone in the ureter. The blocking device is passed through the ureteroscope into the ureter to bring the blocking piece 1 behind the stone, as shown in fig. 2, in which the blocking piece 1 is in a contracted state and accommodated in the sheath 4. Then, the sheath 4 is pulled outwards to release the blocking piece 1, the guide wire 3 is pulled outwards to enable the movable end 12 to be close to the fixed end 11 along the first direction, as shown in fig. 1, so that the blocking piece 1 is unfolded in the direction perpendicular to the first direction to block ureteral cavity behind the calculus, the holmium laser is used for carrying out calculus breaking operation on the calculus, and the blocking piece 1 can prevent the calculus from being backflushed back to the kidney. After the lithotripsy operation is finished, the blocking piece 1 is kept in an unfolding state, the whole blocking device is pulled outwards, and the blocked lithotripsy is pulled into the bladder from the ureter. Finally, pushing the guidewire 3 inwardly moves the movable end 12 away from the fixed end 11 in a first direction, causing the occluding component 1 to collapse in a direction perpendicular to the first direction, pushing the sheath 4 inwardly to retrieve the occluding component 1, causing the occluding component 1 to exit the urethra.

The plugging device is characterized in that the plugging piece 1 is fixed through the catheter 2, and the expansion and the contraction of the plugging piece 1 are controlled through the guide wire 3 movably penetrating through the catheter 2, so that the plugging piece 1 can be attached to the inner wall of the patient ureter and excessive pressure is not caused. The sheath tube 4 movably sleeved outside the catheter 2 controls the release and recovery of the plugging piece 1, so that the urethra and ureter of a patient are prevented from being scratched when the plugging piece 1 enters and exits from the body cavity. The plugging device has the plugging piece adjusting function and the plugging piece collecting and releasing function, and the operation difficulty and the treatment risk of patients are further reduced.

It should be noted that, the blocking member 1, the catheter 2, the guide wire 3 and the sheath 4 are made of flexible materials, so that the blocking device can be deformed adaptively when entering and exiting the body cavity. Alternatively, the occluding component 1, the catheter 2, the guidewire 3 and the sheath 4 may be made of a flexible polymeric material or other materials that are safe and effective.

The blocking piece 1 is a component which can temporarily block the ureteral cavity after operation in lithotripsy operation and prevent stone drift. Alternatively, the closure 1 may be configured in the form of a basket, balloon, blade or the like. The plugging piece 1 shown in the drawing of the utility model is in the form of a basket.

In some embodiments, the inner diameter of the sheath 4 is greater than the maximum outer diameter of the occluding component 1 in the contracted state. In this way, the sheath 4 releases or retrieves the occluding component 1 in the contracted state, minimizing friction with each other, thereby reducing wear of the components while avoiding clogging.

In some embodiments, the outer diameter of the guidewire 3 is smaller than the inner diameter of the catheter 2, and the outer diameter of the catheter 2 is smaller than the inner diameter of the sheath 4. In this way, the guide wire 3 and the sheath 4 can be moved relative to the catheter 2 with minimal friction to minimize wear of the components while avoiding clogging.

Fig. 3 shows a schematic structural view of a plugging device according to another embodiment of the present utility model.

Referring to fig. 3, in some embodiments, the occlusion device further comprises an operating mechanism 5. An operating mechanism 5 is connected to the catheter 2, the guide wire 3 and the sheath 4, respectively, the operating mechanism 5 being configured to be able to drive the guide wire 3 and the sheath 4 to move relative to the catheter 2. Therefore, an operator can drive the guide wire 3 and the sheath tube 4 through the operating mechanism 5, so that the adjustment operation and the retraction operation of the plugging piece 1 are completed, and the operation difficulty is reduced.

FIG. 4 shows a schematic view of the operating mechanism of the occlusion device of FIG. 3; fig. 5 shows a partial enlarged view at a in fig. 4.

Referring to fig. 4 and 5, as an alternative embodiment, the operating mechanism 5 includes a grip member 51, a first operating member 52, and a second operating member 53. The grip 51 is fixedly connected to the catheter 2. The first operating member 52 is fixedly connected to the guide wire 3 to drive the guide wire 3 to move relative to the catheter 2. The second operating member 53 is fixedly connected to the sheath 4 to move the sheath 4 relative to the catheter 2. The holding piece 51 provides a holding part for an operator and plays a role in fixing the catheter 2, so that the fixed end 11 of the plugging piece 1, the catheter 2 and the holding piece 51 are relatively fixed, and stable operation is ensured. When an operator holds the holding piece 51, the guide wire 3 connected with the first operating piece 52 can be driven to move relative to the guide tube 2 connected with the holding piece 51 by operating the first operating piece 52, and the sheath tube 4 connected with the second operating piece 53 can be driven to move relative to the guide tube 2 connected with the holding piece 51 by operating the second operating piece 53, so that the adjustment operation and the retraction operation of the plugging piece 1 are completed, and the operation is simple and convenient.

In some embodiments, the first operating member 52 is in sliding engagement with the grip member 51. Thus, the operating mechanism is compact in structure, and when an operator holds the holding piece 51, the operator can press and slide the first operating piece 52 by one hand, so that the adjustment operation of the plugging piece 1 is completed, and the operation difficulty is reduced.

In some embodiments, the second operating member 53 is slidably engaged with the grip member 51. Thus, the operating mechanism is compact in structure, and when an operator holds the holding piece 51, the operator can press and slide the second operating piece 53 by one hand, so that the retraction operation of the plugging piece 1 is completed, and the operation difficulty is reduced.

In particular, in the embodiment shown in fig. 3 to 5, the first operating member 52 and the second operating member 53 are slidably engaged with the holding member 51, and the first operating member 52 and the second operating member 53 are respectively located at two sides of the holding member 51, so that the distance between the first operating member 52 and the second operating member 53 in the sliding direction can be shortened on the premise of ensuring that the sliding stroke of the first operating member 52 and the sliding stroke of the second operating member 53 are unchanged and cannot interfere with each other, so that the structure of the operating mechanism 5 is more compact and convenient to operate. Of course, in other embodiments, the first operating member 52 and the second operating member 53 may be disposed at a distance from each other along the sliding direction on one side of the grip member 51.

In some embodiments, with continued reference to fig. 5, the grip 51 is provided with a catheter securement 511, and the end of the catheter 2 remote from the occluding component 1 is secured to the catheter securement 511. The solid line portion 4a and the broken line portion 4b of the sheath tube 4 respectively show two extreme positions of the movement of the sheath tube 4 along with the second operation member 53, and it can be seen from the figure that, in the whole travel of the sheath tube 4, there is a suspended portion of the catheter 2 which is not sleeved on the sheath tube 4 nor fixed to the catheter fixing portion 511, and the length of the suspended portion is L. When L is excessively large, the strength of the catheter 2 itself is insufficient to support the reciprocating movement of the sheath 4, and a phenomenon in which the catheter 2 is bent may occur.

Therefore, as shown in fig. 3 to 5, by disposing the first operating element 52 and the second operating element 53 on both sides of the holding element 51, the structure of the operating mechanism 5 is more compact, and the length L of the suspended portion of the catheter 2 is also reduced, so that the strength of the catheter 2 itself is sufficient to support the reciprocating movement of the sheath tube 4, so as to prevent the catheter 2 from bending.

In some embodiments, the occluding device further comprises a support tube (not shown). The support tube is fixedly connected with the holding piece 51, and the support tube is sleeved outside the catheter 2. The supporting force of the catheter 2 is increased by the supporting tube, and the catheter 2 is prevented from bending during the movement of the sheath tube 4. Specifically, the support tube is fixedly connected with the catheter fixing portion 511, extends out of the catheter fixing portion 511 and is sleeved on the suspended portion of the catheter 2. Alternatively, the support tube is constructed as a stainless steel tube.

With continued reference to fig. 3, in some embodiments the occluding device further comprises a guide member 6, the guide member 6 being connected to the movable end 12 of the occluding component 1. The guide 6 serves to enhance the self-guiding ability of the occluding device within the body lumen, providing better compliance of the occluding device and thereby enhancing the ability of the occluding device to clear obstacles such as stones.

In summary, according to the plugging device disclosed by the utility model, the fixed end 11 of the plugging piece 1 is fixed through the catheter 2, and the expansion and contraction of the plugging piece 1 are controlled through the guide wire 3 movably penetrating through the catheter 2, so that the plugging piece 1 can be attached to the inner wall of the patient ureter and excessive pressure is not caused. The sheath tube 4 movably sleeved outside the catheter 2 controls the release and recovery of the plugging piece 1, so that the urethra and ureter of a patient are prevented from being scratched when the plugging piece 1 enters and exits from the body cavity. The operating mechanism 5 is used for driving the guide wire 3 and the sheath tube 4 to move relative to the catheter 2 so as to reduce the operation difficulty of the plugging device. The guide 6 is used to improve the ability of the occlusion device to clear obstacles. The plugging device has the plugging piece adjusting function and the plugging piece collecting and releasing function, and the operation difficulty and the treatment risk of patients are further reduced.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the patent. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the protection scope of this patent shall be subject to the appended claims.

Claims (10)

1. A closure device, comprising:

the plugging piece is provided with a fixed end and a movable end which are oppositely arranged along a first direction;

a conduit connecting the fixed ends of the plugs;

the guide wire is movably arranged on the catheter and the fixed end of the plugging piece in a penetrating manner, and is connected with the movable end of the plugging piece so as to drive the movable end to be close to or far away from the fixed end along the first direction, so that the plugging piece can be unfolded in a direction perpendicular to the first direction to be in an unfolded state or contracted to be in a contracted state; and

the sheath is movably sleeved outside the catheter and is configured to accommodate the plugging piece in the contracted state.

2. The occlusion device of claim 1, further comprising an operating mechanism;

the operating mechanism is respectively connected with the catheter, the guide wire and the sheath;

the operating mechanism is configured to drive movement of the guidewire and the sheath relative to the catheter.

3. The occlusion device of claim 2, wherein said operating mechanism comprises a grip, a first operating member, and a second operating member;

the holding piece is fixedly connected with the catheter;

the first operation piece is fixedly connected with the guide wire so as to drive the guide wire to move relative to the catheter;

the second operating piece is fixedly connected with the sheath tube so as to drive the sheath tube to move relative to the catheter.

4. The occlusion device of claim 3, wherein said first operating member is in sliding engagement with said grip member.

5. The occlusion device of claim 3, wherein said second operating member is in sliding engagement with said grip member.

6. The occlusion device of claim 3, further comprising a support tube;

the support tube is fixedly connected with the holding piece, and the support tube is sleeved outside the catheter.

7. The occlusion device of any of claims 1-6, wherein said occlusion element is configured as one of a basket, balloon, or blade.

8. The occlusion device of any of claims 1-6, further comprising a guide;

the guide member is connected to the free end of the closure member.

9. The occlusion device of any of claims 1-6, wherein an inner diameter of said sheath is greater than a maximum outer diameter of said occlusion member in said contracted state.

10. The occlusion device of any of claims 1-6, wherein an outer diameter of said guidewire is less than an inner diameter of said catheter;

the catheter has an outer diameter less than an inner diameter of the sheath.