CN118750099B - A stone-taking net basket fixing part and stone-taking net basket - Google Patents

Abstract

The invention provides a stone-taking basket fixing piece and a stone-taking basket, which relate to the field of medical appliances and comprise basket heads, wherein the basket heads are used for being connected with the distal ends of basket wires; the basket head comprises a basket head, a movable piece, a driving piece and a driving piece, wherein the basket head is movably connected with the movable piece so as to be switched from a fixed state to a release state, the driving piece is used for driving the movable piece to move relative to the basket head so as to enable the movable piece to be switched from the fixed state to the release state, the basket wires can be fixed on the basket head by the movable piece when the movable piece is in the fixed state, and the basket head can be disconnected from the basket wires when the movable piece is in the release state. Compared with the prior art, the invention has the advantages that the embedded basket can be taken out without surgical operation, thereby greatly reducing clinical risks and pains of patients.

Description

Stone-taking basket fixing piece and stone-taking basket

Technical Field

The invention relates to the technical field of medical instruments, in particular to a stone-taking basket fixing piece and a stone-taking basket.

Background

The stone-taking basket is a common medical instrument which is mainly used for taking out stones in ureter or renal pelvis in urinary surgery. The working principle is that the basket is extended into the target area through the working channel of the endoscope, and the stones are taken out of the body smoothly after being grasped. The stone-taking basket has the advantages of simple operation, small wound and quick recovery, and is widely applied to minimally invasive urological surgery.

In practical application, the stone-taking basket is mainly used for taking out broken stone fragments after stone breaking operation. However, when the basket is used for shifting the stones during operation, the stones may be blocked at the ureter or the neck of the cup, so that the stones cannot be released due to the loosening of the basket. If improperly operated during surgery, the most serious complication ureteral avulsion may be caused. In such a case, reinsertion of the working channel into other lithotripsy devices such as laser fibers and the like may become difficult. At this point, surgery is often required to remove the embedded basket, which greatly increases clinical risk and patient pain.

Disclosure of Invention

In order to solve the above problems, the present application provides a stone removal basket fixing piece and a stone removal basket.

In a first aspect, the application provides a stone removal basket fixing piece, which adopts the following technical scheme:

The utility model provides a get stone basket mounting, is applied to and gets stone basket, it includes the basket silk to get stone basket, the basket silk has elasticity, includes:

The basket head is used for being connected with the distal end of the basket wire;

A movable part movably connected to the basket head for switching from a fixed state to a release state, and

The driving piece is used for driving the movable piece to move relative to the basket head so as to enable the movable piece to be switched from a fixed state to a release state;

under the condition that the movable piece is in a fixed state, the movable piece can fix the basket wires to the basket head;

and under the condition that the movable piece is in a release state, the basket head can be separated from the basket wires.

Preferably, a gap is formed between the movable piece and the basket head, and the basket wires are clamped in the gap when the movable piece is in a fixed state;

When the movable piece is in a release state, the slit is opened so that the basket wires can be pulled out of the slit.

Preferably, the basket head and/or the movable piece is/are provided with a fitting groove for fitting with the outer wall of the basket wire, and the basket wire is located in the fitting groove under the condition that the basket wire is located in the crack.

Preferably, the movable parts are provided with through holes, and the number of the movable parts is at least two;

The movable pieces are hinged to the basket heads, and adjacent movable pieces are close to each other in the process of switching the movable pieces from a release state to a fixed state;

and a part of the basket wires is positioned in the through holes so as to push the adjacent movable pieces to be close to each other.

Preferably, the movable piece is hinged with the basket head through a hinge shaft, and the through hole comprises an inlet and an outlet, wherein:

The through hole is positioned at one side of the movable piece far away from the hinge shaft;

And/or, in the process of switching the movable piece from the fixed state to the release state, the movable piece rotates towards the side far away from the central axis of the basket head, the inlet is positioned at the side of the movable piece close to the central axis of the basket head, and the outlet is positioned at the side of the movable piece far away from the central axis of the basket head;

and/or the distance of the outlet from the hinge shaft is smaller than the distance of the inlet from the hinge shaft.

Preferably, the basket head is movably provided with a linkage member, and the linkage member can push the movable member to switch from a fixed state to a release state under the condition that the linkage member moves relative to the basket head;

the driving piece comprises a cutting wire which is connected with the linkage piece to drive the linkage piece to move relative to the basket head;

the cutting wire can move relative to the basket wire under the condition that the cutting wire is pulled, so that the linkage piece can move relative to the basket head;

the cutting wire is disconnected from the linkage in the event that the tensile force applied by the cutting wire exceeds a predetermined value.

Preferably, the cutting wire is sleeved with an outer sleeve, the cutting wire can move along the central axis direction of the cutting wire relative to the outer sleeve, the outer sleeve and the basket wires together form a basket, and the outer sleeve can be linked with the basket wires so as to enable the stone taking basket to be unfolded or stored;

the cutting wire is positioned near the end of the linkage piece and is provided with a breaking notch, and the cutting wire can be broken from the breaking notch under the condition that the cutting wire is pulled.

Preferably, the movable member is provided with binding members, the outer sleeve is located between adjacent binding members, and the outer sleeve is pressed between the binding members under the condition that the movable member is in a fixed state.

Preferably, when the movable member is in a fixed state, adjacent binding members are in contact with each other;

The binding pieces are provided with glue, adjacent binding pieces can be mutually adhered through the glue, and the glue is invalid after contacting with water for a preset time, so that the adjacent binding pieces can be mutually separated.

In a second aspect, the application provides a stone removal basket, which adopts the following technical scheme:

A stone-taking basket comprises the technical scheme, a handle and a sheath tube, wherein the sheath tube is provided with a winding opening, basket wires, an outer sleeve and cutting wires can be unfolded or stored through the winding opening, a first push button and a second push button are movably arranged on the handle, the basket wires, the outer sleeve and the cutting wires can be unfolded or stored through the winding opening under the condition that the first push button is movable, and the cutting wires can be moved relative to the outer sleeve under the condition that the second push button is movable, so that the cutting wires are broken.

The invention has the following advantages and beneficial effects:

Through setting up the moving part, can fix the basket silk on the basket head to make get stone basket and can carry out the operation of catching and catch objects such as calculus. When stones and the stone taking basket are clamped at the ureter or the neck of the cup, the driving piece can drive the movable piece to move, so that the movable piece loosens the basket wires, the basket wires move relative to the stones, and finally, the basket is loosened and the stones are released. Thus, the embedded basket can be taken out without surgical operation, thereby greatly reducing clinical risks and pains of patients.

On the other hand, after the basket is taken out, enough space is reserved for inserting other stone breaking equipment, so that the embedded stones can be broken, the embedded stones can be taken out without surgical operation, and the clinical risks and the pain of patients are reduced.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a first schematic configuration of an embodiment of the present application;

FIG. 2 is a second schematic structural view of an embodiment of the present application;

FIG. 3 is a first cross-sectional view of an embodiment of the present application;

FIG. 4 is a second cross-sectional view of an embodiment of the present application;

FIG. 5 is a schematic view of the structure of basket wires;

FIG. 6 is a schematic view of the structure of the cut wire as it is connected to the linkage;

FIG. 7 is a first schematic view of the engagement of the basket head with the moveable member;

FIG. 8 is a second schematic view of the engagement of the basket head with the moveable member;

FIG. 9 is a schematic view of a third configuration of the basket head mated with the moveable member;

FIG. 10 is a fourth schematic view of the engagement of the basket head with the moveable member;

FIG. 11 is a third schematic structural view of an embodiment of the present application;

fig. 12 is a schematic view of the structure of the stone removal basket.

Marked in the figure as:

10. The stone taking basket comprises a stone taking basket body, 11 parts, a handle, 12 parts, a first push button, 13 parts, a second push button, 14 parts, a sheath tube, 14a parts, a collecting opening, 15 parts, basket wires, 100 parts, basket heads, 110 parts, a linkage part, 111 parts, a pushing part, 200 parts, a movable part, 210 parts, a crack, 211 parts, a fitting groove, 220 parts, a through hole, 221 parts, an inlet, 222 parts, an outlet, 230 parts, a binding part, 300 parts, a driving part, 310 parts, a cutting wire, 311 parts, a fracture notch, 320 parts, an outer sleeve, 400 parts and a hinge shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In various embodiments of the present application, "proximal" and "distal" refer to the endoscope and its components in the environment of use, relative to the user's proximal-distal position, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

The following describes a stone removal basket fixing piece and a stone removal basket provided by the embodiment of the application in detail through specific embodiments and application scenes thereof with reference to fig. 1 to 12.

A first aspect of the present embodiment provides a detailed description of a stone removal basket fixture.

Referring to fig. 12, a stone removal basket fixture for use with stone removal basket 10. Illustratively, the stone removal basket 10 includes a handle 11, a sheath 14, and a basket, the sheath 14 being connected to the handle 11, the basket being movable within the sheath 14 to allow the basket to be deployed or stowed, it being understood that the basket is capable of capturing stones when deployed.

In some aspects, referring to fig. 12, 5, the basket includes basket wires 15, at least a portion of basket wires 15 being located within sheath 14, and a portion of basket wires 15 extending from the distal end of sheath 14 to the outside, i.e., the distal end of basket wires 15 being located outside sheath 14. Wherein the basket wires 15 have elasticity. It will be appreciated that the basket wires 15 herein are resilient, meaning that the basket wires 15 are capable of deforming under their own resilience to deploy the basket. Illustratively, when the basket is operated to move outside the sheath tube 14, the basket wires 15 move outside the sheath tube 14, and the basket wires 15 outside the sheath tube 14 deform under the action of self elasticity due to no constraint of the sheath tube 14, so that the distance between the adjacent basket wires 15 is increased, and stones can enter the basket surrounded by the basket wires 15. By manipulating the basket to move into the sheath tube 14, the basket wires 15 will passively deform under the action of the sheath tube 14, reducing the spacing between the basket wires 15, and thereby firmly capturing the stones.

In some embodiments, the anchor is removably attached to the basket wire 15 at a distal end thereof, and when the anchor is separated from the basket wire 15, the basket wire 15 is released, thereby releasing the basket, at which point stones will be dislodged from the basket.

Referring to fig. 1 and 2, the fixing member includes a basket head 100, a movable member 200, and a driving member 300. Illustratively, the basket head 100 is a basic component, the movable member 200 is movably connected to the basket head 100, and the driving member 300 is used for driving the movable member 200 to move relative to the basket head 100. In some embodiments, the moveable member 200 has both a fixed state and a released state. In the case where the movable member 200 moves relative to the basket head 100, the movable member 200 can be switched from the fixed state to the released state. When the movable member 200 is in the fixed state, the movable member 200 can fix the basket wires 15 to the basket head 100, and when the movable member 200 is in the released state, the basket head 100 can be disconnected from the basket wires 15.

In some aspects, referring to fig. 3 and 6, the driving member 300 can drive the movable member 200 to switch from the fixed state to the released state. Illustratively, the driving member 300 is a driving cord, and by pulling the driving cord, the movable member 200 may be moved relative to the basket head 100, switching the movable member 200 from the fixed state to the released state. At this time, the basket wires 15 fixed to the basket head 100 will be separated from the basket head 100. By driving the basket wires 15 into the sheath 14 (see fig. 12), the basket can be separated from the stone and eventually completely into the sheath 14. The basket may be removed from the body by removing the sheath 14 from the body. In some embodiments, the driving member 300 may also be an air bag structure, where the air bag structure is fixed between the basket head 100 and the movable member 200, and the air bag structure is inflated by blowing air into the air bag structure, so as to push the movable member 200 to move relative to the basket head 100, so that the movable member 200 is switched from the fixed state to the released state.

According to an alternative embodiment, referring to fig. 3 and 4, a gap 210 is formed between the movable member 200 and the basket head 100, and the basket wires 15 are clamped in the gap 210 when the movable member 200 is in a fixed state. With the moveable member 200 in the released state, the slit 210 opens to allow the basket wires 15 to be removed from the slit 210. That is, by moving the movable member 200 relative to the basket head 100, the size of the gap 210 may be changed. When the gap 210 is small, the basket wires 15 are clamped between the movable member 200 and the basket head 100. When the gap 210 is larger, the gap 210 is larger in size than the basket wires 15, and the basket wires 15 can be pulled out of the gap 210.

Illustratively, the movable member 200 is slidably coupled to the basket head 100 in a direction toward or away from the basket head 100 (not shown), and the slit 210 is located in an area between a side of the movable member 200 facing the basket head 100 and a side of the basket head 100 facing the movable member 200. When the movable member 200 moves toward the basket head 100, the size of the slit 210 gradually decreases, and if the basket wires 15 are positioned in the slit 210, the basket wires 15 will be clamped in the slit 210 as the movable member 200 continuously slides, and at this time, the basket wires 15 are fixed to the basket head 100, i.e., the movable member 200 is in a fixed state. As the movable member 200 moves away from the basket head 100, the size of the slit 210 gradually increases, and if the basket wires 15 are clamped in the slit 210, the basket wires 15 are released from the slit 210 as the movable member 200 continues to slide, so that the basket head 100 is separated from the basket wires 15, i.e., the movable member 200 is in a released state. It will be appreciated that the moveable member 200 may also be connected to the basket head 100 by other means, for example, the moveable member 200 may be hinged to the basket head 100 (see fig. 3 and 4).

According to an alternative embodiment, referring to fig. 7 and 8, the basket head 100 is provided with a fitting groove 211, and an opening of the fitting groove 211 is located in the nip 210. When it is desired to clamp the basket wires 15 in the slots 210, the basket wires 15 may be placed in the attachment slots 211. Illustratively, the shape of the fitting groove 211 is adapted to the outer contour shape of the basket wire 15, and when the basket wire 15 is pressed in the fitting groove 211, the contact area between the fitting groove 211 and the basket wire 15 is larger, so that a better fixing effect can be provided, and the basket wire 15 is effectively prevented from sliding relative to the basket head 100 or the movable member 200. It is understood that the fitting groove 211 may be provided on the movable member 200, or the fitting groove 211 may be provided on both the basket head 100 and the movable member 200. The specific installation position of the fitting groove 211 is not particularly limited in this embodiment.

According to an alternative embodiment, the number of moving parts 200 is at least two, and at least one through hole 220 is provided in each moving part 200. The through-hole 220 is shown as having two openings, i.e., the basket wires 15 may pass through one of the openings into the through-hole 220 and may pass out of the through-hole 220 through the other opening.

In some embodiments, the movable member 200 is hinged to the basket head 100, and illustratively, a hinge shaft 400 is connected to the basket head 100, the movable member 200 is rotatably connected to the hinge shaft 400, and the gap 210 is located at a hinge position between the movable member 200 and the basket head 100, so that the size of the gap 210 can be changed when the movable member 200 rotates relative to the basket head 100.

In some aspects, adjacent moveable members 200 are adjacent to each other during the transition of moveable members 200 from the released state to the secured state. Illustratively, the end of the moveable member 200 remote from the hinge shaft 400 is a free end, and when the moveable member 200 is moved relative to the basket head 100, the free end of the moveable member 200 will move toward or away from the center side of the basket head 100. In this way, when the movable members 200 are switched from the released state to the fixed state, adjacent movable members 200 can be brought close to each other.

In some aspects, referring to fig. 9 and 10, portions of the basket wires 15 are positioned within the through holes 220 to urge adjacent movable members 200 toward each other. It will be appreciated that the basket wires 15 are made of a memory alloy or the like having a predetermined initial shape. When the shape of the basket wires 15 is changed, elastic force is formed inside the basket wires 15, and after the external force is removed, the basket wires 15 can be restored to the original shape.

Illustratively, when it is desired to capture a stone, the basket wires 15 are pushed out of the sheath 14. Because the sheath tube 14 is not bound, the basket wires 15 can be diffused and deformed to the periphery, the distance between the adjacent basket wires 15 is increased, and stones can enter the interior of the basket through the distance between the adjacent basket wires 15. In this state, the basket wires 15 are still constrained by the body organ or lumen due to the restriction of the body organ or lumen, thereby generating a collapsing force. Because a portion of the basket wires 15 is located in the through holes 220, the collapsing force of the portion is transferred to the movable member 200, thereby pushing the movable member 200 to be in a fixed state, and fixing the basket head 100 and the basket wires 15 together.

According to an alternative embodiment, referring to fig. 8 and 11, the movable member 200 is hinged with the basket head 100 through the hinge shaft 400, the through-hole 220 includes the inlet 221 and the outlet 222, and the through-hole 220 is located at a side of the movable member 200 remote from the hinge shaft 400. That is, the through hole 220 is provided at the free end side of the movable member 200, and since a portion of the basket wire 15 is located in the through hole 220 and the basket wire 15 needs to be pushed to rotate by the basket wire 15 to fix the basket wire 15 to the basket head 100, in order to improve the fixing effect of the basket wire 15, the pushing force of the basket wire 15 to push the movable member 200 to rotate needs to be increased to clamp the basket wire 15 into the slit 210. The through hole 220 is provided at the free end side of the movable member 200, so that the torque for pushing the movable member 200 to rotate can be increased, thereby the movable member 200 can clamp the basket wires 15 into the slits 210 more easily, and the fixing effect can be improved.

According to an alternative embodiment, during the switching of the movable member 200 from the fixed state to the released state, the movable member 200 rotates to the side away from the central axis of the basket head 100, the inlet 221 is located at the side of the movable member 200 close to the central axis of the basket head 100, and the outlet 222 is located at the side of the movable member 200 away from the central axis of the basket head 100. I.e., inlet 221 is closer to the central axis of basket head 100. Referring to fig. 8 and 12, the basket wires 15 pass out of the distal position of the sheath 14, enter the through holes 220 through the inlet 221, and then exit the outlet 222 and enter the slit 210. By locating the inlet 221 adjacent the central axis of the basket head 100, adjacent basket wires 15 may be brought into close proximity with one another at the inlet 221, thereby allowing the basket wires 15 to form a basket around, facilitating the capture of stones.

According to an alternative embodiment, referring to fig. 2 and 8, the distance of the outlet 222 from the hinge shaft 400 is smaller than the distance of the inlet 221 from the hinge shaft 400. Illustratively, the inlet 221 is located at the free end side of the moveable member 200 and the outlet 222 is located at the side of the moveable member 200 adjacent the hinge shaft 400. This arrangement allows the basket wires 15 to approach each other at the free end side of the movable member 200. When the basket wire 15 is restrained by the organ or the cavity in the body, the movable member 200 can be pushed to rotate towards the central axis side of the basket wire 15 better, so that the basket wire 15 is pressed in the slit 210.

According to an alternative embodiment, referring to fig. 6 and 7, the basket head 100 is movably provided with a linkage member 110, and when the linkage member 110 moves relative to the basket head 100, the linkage member 110 can push the movable member 200 to switch from the fixed state to the release state. Illustratively, the linkage 110 is slidably coupled to the basket head 100. When the link 110 slides relative to the basket head 100, the movable member 200 can be pushed to rotate, thereby switching the movable member 200 from the fixed state to the released state. For example, the linkage 110 is slidably disposed on the basket head 100 in a direction approaching or separating from the basket head 100 and is located between at least two moving members 200. A guide surface, such as a slope, is provided between the link member 110 and the movable member 200. By allowing the linkage member 110 to slide relative to the basket head 100, the linkage member 110 pushes the movable member 200 to rotate under the action of the guide surface, thereby achieving the purpose of switching the movable member 200 from the fixed state to the released state.

In some embodiments, the linkage 110 is hinged to the basket head 100, the linkage 110 having a push portion 111. When the link 110 rotates, the pushing portion 111 can move to a side away from the central axis of the basket head 100. By arranging the pushing part 111 between at least two movable pieces 200 and enabling the movable piece 110 to rotate, the pushing part 111 can be in contact with the movable piece 200, namely, when the movable piece 110 rotates, the movable piece 200 is pushed by the pushing part 111 to rotate towards the central axis side deviating from the basket head 100, so that the purpose of switching the movable piece 200 from the fixed state to the release state is realized. Illustratively, the number of the movable members 200 and the linkage members 110 is two, and the two movable members 200 are disposed opposite to each other with the linkage member 110 between the two movable members 200. The linkage members 110 are arranged in a one-to-one correspondence with the movable members 200, one linkage member 110 is positioned at a side close to one of the movable members 200, and the other linkage member 110 is positioned at a side close to the other movable member 200. The pushing part 111 faces the corresponding movable member 200, and when the linkage member 110 rotates, the pushing part 111 can push the corresponding movable member 200 to rotate, so that the movable member 200 is switched from the fixed state to the release state.

In some aspects, referring to fig. 6 and 7, the driver 300 includes a cutting wire 310, the cutting wire 310 being connected to the linkage 110 to drive the linkage 110 to move relative to the basket head 100, the cutting wire 310 and the basket wires 15 together forming a basket. With the wire 310 in tension, the wire 310 may be moved relative to the basket wires 15 so that the linkage 110 may be moved relative to the basket head 100. The linkage 110 may be pulled to move by the breaking wire 310, thereby pushing the movable member 200 to rotate. It will be appreciated that the action of the cutting wire 310 pulling the linkage 110 may be pulling the linkage 110 to slide relative to the basket head 100 or pulling the linkage 110 to rotate relative to the basket head 100. The particular manner in which the pull linkage 110 is moved depends on the manner in which the moveable member 200 is disposed. For example, if the linkage 110 is hinged to the basket head 100, the cutting wire 310 may pull the linkage 110 to rotate relative to the basket head 100.

In some aspects, the wire 310 is disconnected from the linkage 110 in the event that the tensile force of the wire 310 exceeds a predetermined value. It will be appreciated that the wire 310 may be formed from a member having a tensile strength within a desired range, thereby achieving a breaking effect when the tensile force of the wire 310 exceeds a predetermined value. It will be appreciated that the tensile strength of the wire 310 is related to the tensile strength of the weakest point thereof, and that this embodiment controls the amount of tension required to break the wire 310 by specifically treating a localized area of the wire 310 to reduce the tensile strength in that area. For example, the cutting wire 310 is provided with a ring groove, so that the strength of the ring groove is remarkably reduced, thereby controlling the breakage of the cutting wire 310. In addition, by adjusting the position of the ring groove, the breaking position of the breaking wire 310 can be controlled to meet specific requirements. It should be noted that, the local part of the cutting wire 310 may be made thinner, or the local material of the cutting wire 310 may be changed to achieve the same effect.

According to an alternative embodiment, referring to fig. 6 and 7, the cutting wire 310 is sleeved with an outer sleeve 320, the cutting wire 310 can move along the central axis direction of the cutting wire 310 relative to the outer sleeve 320, the outer sleeve 320 and the basket wires 15 together form a basket, and the outer sleeve 320 can be linked with the basket wires 15 so as to enable the stone taking basket 10 to be unfolded or stored. It will be appreciated that the outer sleeve 320 and the basket wires 15 together form a basket, which means that the basket includes the outer sleeve 320 and the basket wires 15, and when the basket needs to be unfolded or stored, the basket wires 15 and the outer sleeve 320 need to be synchronously driven to move so that the basket can be unfolded or stored. Illustratively, the outer sleeve 320 may be understood as a thicker basket wire 15, and the thicker basket wire 15 is disposed in a hollow state. The cut wire is threaded into the thicker basket wires 15. It is understood that the outer sleeve 320 may be made of the same material as the basket wires 15 or may be made of a different material than the basket wires 15. However, the outer sleeve 320 has similar or identical characteristics to the basket wires 15, for example, the outer sleeve 320 is also resilient, and the outer sleeve 320 has a predetermined initial shape that is the same as or similar to the basket wires 15, so that the outer sleeve 320 forms a basket with the basket wires 15 to capture stones with the basket wires 15.

The deployment or storage of the stone removal basket 10 means that the basket itself may be deployed or stored during use. The stone removal basket 10 may be represented as being in a stowed condition when the basket is stowed and may be represented as being in a deployed condition when the basket is deployed.

In some aspects, the cutting wire 310 is positioned near the end of the linkage 110 with a break notch 311, and the cutting wire 310 may break from the break notch 311 when the cutting wire 310 is pulled. The breaking notches 311 allow the breaking wire 310 to be easily broken, so that the breaking wire 310 is broken when the force applied to the breaking wire 310 is greater than a preset value.

It will be appreciated that when it is desired to capture a stone, the basket wires 15 and outer sleeve 320 are driven simultaneously outwardly of the sheath 14, deploying the basket, thereby allowing the stone to enter the basket. The basket wires 15 and outer sleeve 320 are then driven simultaneously into the sheath 14 until the stones are captured. Then, the sheath 14 is moved to drive the basket wires 15 and the outer sleeve 320 to move outwards together so as to take out the stones from the body.

In the process of taking out the stones outside the body, if the stones and the basket are in a incarceration state, the basket needs to be separated from the stones. At this time, the cutting wire 310 may be driven, so that the cutting wire 310 pulls the linkage 110 to move relative to the basket head 100 under the action of external force. With the linkage 110 active, the movable member 200 is pushed to rotate, thereby releasing the basket wires 15 in the slits 210 and disengaging the basket wires 15 from the basket head 100. Subsequently, the external force applied to the cutting wire 310 is increased until the cutting wire 310 is broken from the breaking notch 311. At this time, the cutting wire 310 and the basket wire 15 are separated from the basket head 100, so that stones can be separated from the basket, and the stone-taking basket 10 can be removed from the body, so that other stone crushing devices can be inserted into the body for crushing stones. After the stones are broken, they can be removed through a new stone removal basket 10. When the crushed stone is removed by the new stone removing basket 10, the basket head 100 left in the body needs to be removed together.

According to an alternative embodiment, referring to fig. 6 and 7, the movable member 200 is provided with tie-down members 230, and the outer sleeve 320 is positioned between adjacent tie-down members 230, and the outer sleeve 320 is compressed between the tie-down members 230 with the movable member 200 in a fixed state. Illustratively, the proximal end of the outer sleeve 320 is positioned within the sheath 14 (see FIG. 12) and is movable with the basket wires 15. The distal end of the outer cannula 320 is compressed by the tie down 230 to secure the distal end of the outer cannula 320 to the basket head 100. It will be appreciated that if the tie 230 is released from the distal end of the outer sleeve 320, the outer sleeve 320 will be connected to the basket head 100 by the cutting wire 310.

The connection of the outer sleeve 320 to the basket head 100 herein does not mean that the outer sleeve 320 is directly connected to the basket head 100, but that the outer sleeve 320 is sleeved outside the cutting wire 310 and the linkage 110 is connected to the basket head 100 because the cutting wire 310 is connected to the linkage 110, so that the outer sleeve 320 can be regarded as being connected to the basket head 100. Thus, if the cutting wire 310 is disconnected from the linkage 110, the distal end of the outer sleeve 320 will be free, such that both the outer sleeve 320 and the cutting wire 310 can be received into the sheath 14.

According to an alternative embodiment, adjacent tie down members 230 are in contact with each other with moveable member 200 in a fixed state. The tie-down members 230 are provided with glue, adjacent tie-down members 230 may be adhered to each other by the glue, and the glue may fail after contacting the water for a predetermined time, so that the adjacent tie-down members 230 may be separated from each other. Because the movable member 200 is movably connected to the basket head 100, when the movable member 200 moves relative to the basket head 100, the binding member 230 is also driven to move relative to the basket head 100. Illustratively, when the adjacent movable members 200 are rotated in the direction away from each other, the adjacent tie members 230 are driven away from each other, whereas when the adjacent movable members 200 are rotated in the direction toward each other, the adjacent tie members 230 are driven toward each other, so that the adjacent tie members 230 can contact each other.

Because of the relatively complex in vivo environment, the moveable member 200 may be caused to rotate and loosen the basket wires 15 by the action of in vivo tissue, which may be detrimental to the capture of stones. To avoid this, adjacent tie down members 230 are glued together by glue. Because the binding 230 is connected with the movable member 200, the adjacent movable member 200 can not move, so that the situation that the basket wires 15 are accidentally loosened is avoided.

However, in some special cases, it is desirable to rotate the moveable member 200 relative to the basket head 100, so that special glue (e.g., hydrosol, which reduces adhesion after a period of contact with water, and even fails) is used to disable the tie down 230 after a period of contact with bodily fluids in the body, thereby not affecting the movement of the moveable member 200. In the use process, if the operation is smooth, the stone taking basket 10 is taken out of the body before the glue fails, and the basket wires 15 are not separated from the basket head 100, so that the purpose of capturing stones is achieved. If the operation is problematic, stones cannot be removed, the operation time is prolonged, and the glue will fail after contacting with body fluid for more than a predetermined time, so that the movable member 200 can be moved, and at this time, the movable member 200 is driven to move by the cutting wire 310, so that the basket wires 15 are separated from the basket head 100.

A second aspect of the present embodiment is a detailed description of a stone removal basket.

Referring to fig. 12, a stone removing net comprises a stone removing basket fixing member according to the above embodiment, and further comprises a handle 11 and a sheath tube 14, wherein the sheath tube 14 is provided with a receiving opening 14a, the basket wire 15, the outer sleeve 320 and the cutting wire 310 can be unfolded or stored through the receiving opening 14a, the handle 11 is movably provided with a first push button 12 and a second push button 13, the first push button 12 can be used for unfolding or storing the basket wire 15, the outer sleeve 320 and the cutting wire 310 through the receiving opening 14a when the handle 11 is movable, and the second push button 13 can be used for moving the cutting wire 310 relative to the outer sleeve 320 when the second push button 13 is movable, so that the cutting wire 310 is broken.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.

Claims (10)

1. The utility model provides a get stone basket mounting, is applied to get stone basket (10), get stone basket (10) including basket silk (15), basket silk (15) have elasticity, its characterized in that includes:

A basket head (100) for connection with the distal end of the basket wires (15);

A movable member (200) movably connected to the basket head (100) to switch from a fixed state to a released state, and

The driving piece (300) is used for driving the movable piece (200) to move relative to the basket head (100) so as to enable the movable piece (200) to be switched from a fixed state to a release state;

wherein, under the condition that the movable piece (200) is in a fixed state, the movable piece (200) can fix the basket wires (15) on the basket head (100);

the basket head (100) can be disconnected from the basket wires (15) when the movable piece (200) is in a release state;

The movable pieces (200) are hinged to the basket head (100), and adjacent movable pieces (200) are close to each other in the process of switching the movable pieces (200) from a release state to a fixed state, wherein the number of the movable pieces (200) is at least two;

the basket head (100) is movably provided with a linkage piece (110), and the linkage piece (110) can push the movable piece (200) to be switched from a fixed state to a release state under the condition that the linkage piece (110) moves relative to the basket head (100).

2. A stone removal basket fixing according to claim 1, characterized in that a gap (210) is formed between the movable member (200) and the basket head (100), the basket wires (15) being clamped in the gap (210) with the movable member (200) in a fixed state;

with the moveable member (200) in a released state, the slit (210) opens to allow the basket wires (15) to escape from within the slit (210).

3. A stone removal basket fixture according to claim 2, wherein the basket head (100) and/or the moveable member (200) is provided with a fitting groove (211) for fitting with the outer wall of the basket wire (15), the basket wire (15) being located in the fitting groove (211) with the basket wire (15) located in the slit (210).

4. A stone removal basket fixture according to claim 1 wherein the moveable members (200) are provided with through holes (220), portions of the basket wires (15) being located within the through holes (220) to urge adjacent moveable members (200) toward each other.

5. The stone removal basket fixture of claim 4 wherein the moveable member (200) is hinged to the basket head (100) by a hinge shaft (400), the through-hole (220) including an inlet (221) and an outlet (222), wherein:

The through hole (220) is positioned at one side of the movable piece (200) away from the hinge shaft (400);

And/or, in the process of switching the movable piece (200) from the fixed state to the release state, the movable piece (200) rotates towards the central axis side far away from the basket head (100), the inlet (221) is positioned at the central axis side of the movable piece (200) close to the basket head (100), and the outlet (222) is positioned at the central axis side of the movable piece (200) far away from the basket head (100);

And/or the outlet (222) is at a smaller distance from the hinge axis (400) than the inlet (221) is from the hinge axis (400).

6. A stone removal basket fixture as claimed in claim 1 wherein,

The driving piece (300) comprises a cutting wire (310), and the cutting wire (310) is connected with the linkage piece (110) to drive the linkage piece (110) to move relative to the basket head (100);

the cutting wire (310) is movable relative to the basket wires (15) under tension, so that the linkage (110) is movable relative to the basket head (100);

the cutting wire (310) is disconnected from the linkage (110) when the tensile force applied by the cutting wire (310) exceeds a predetermined value.

7. The stone removal basket fixture according to claim 6, wherein the cutting wire (310) is sleeved with an outer sleeve (320), the cutting wire (310) is movable relative to the outer sleeve (320) along the central axis direction of the cutting wire (310), the outer sleeve (320) and the basket wire (15) together form a basket, and the outer sleeve (320) can be linked with the basket wire (15) to enable the stone removal basket (10) to be unfolded or stored;

The cutting wire (310) is positioned near the end of the linkage piece (110) and is provided with a breaking notch (311), and the cutting wire (310) can be broken from the breaking notch (311) under the condition that the cutting wire (310) is pulled.

8. A stone removal basket fixture according to claim 7, wherein said movable members (200) are provided with tie members (230), said outer sleeve (320) being located between adjacent said tie members (230), said outer sleeve (320) being compressed between said tie members (230) with said movable members (200) in a fixed state.

9. A stone basket fixing according to claim 8, characterized in that adjacent tie-down elements (230) are in contact with each other with the movable element (200) in a fixed state;

the binding members (230) are provided with glue, adjacent binding members (230) are adhered to each other by the glue, and the glue is ineffective after contacting with water for a predetermined time, so that the adjacent binding members (230) can be separated from each other.

10. The stone removal basket is characterized by comprising the stone removal basket fixing piece according to claim 7, and further comprising a handle (11) and a sheath tube (14), wherein the sheath tube (14) is provided with a receiving opening (14 a), the basket wires (15), the outer sleeve (320) and the cutting wires (310) can be unfolded or contained through the receiving opening (14 a), the handle (11) is movably provided with a first push button (12) and a second push button (13), the basket wires (15), the outer sleeve (320) and the cutting wires (310) can be unfolded or contained through the receiving opening (14 a) under the condition that the first push button (12) is movable, and the cutting wires (310) can be moved relative to the outer sleeve (320) under the condition that the second push button (13) is movable, so that the cutting wires (310) are broken.