CN210124816U - Stone-taking basket structure with stress safety mechanism - Google Patents
Stone-taking basket structure with stress safety mechanism Download PDFInfo
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- CN210124816U CN210124816U CN201920201720.2U CN201920201720U CN210124816U CN 210124816 U CN210124816 U CN 210124816U CN 201920201720 U CN201920201720 U CN 201920201720U CN 210124816 U CN210124816 U CN 210124816U
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- basket
- spring
- hole
- guide pipe
- movable seat
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Abstract
The utility model discloses a get stone basket structure with atress safety mechanism, it comprises basket body, basket sheath pipe, brake valve lever, handle sliding block and atress safety mechanism etc.. The stress safety mechanism mainly comprises a spring fixing sleeve, a spring movable seat, an inner layer guide pipe, an outer layer guide pipe, a buffer spring, an inner layer heat-shrinkable pipe, an outer layer heat-shrinkable pipe, a pushing guide pipe and the like. The beneficial effects of the utility model reside in that: the operation strength of an operator is relieved, and unsafe factors that the stone-taking basket is broken due to the conditions of excessive force and the like in the stone-taking process are avoided.
Description
Technical Field
The utility model relates to the field of medical equipment, especially a get stone basket structure with atress safety mechanism extensively is used for the wicresoft of biliary tract, uropoiesis stone disease to intervene the operation.
Background
Biliary and urinary calculi afflict many patients for many years, often require treatment by open surgery in the early stage, and patients need to be recovered in hospitals after a period of time. The minimally invasive surgery greatly reduces the pain of patients and shortens the hospitalization time, one of the instruments is a disposable calculus-taking basket which comprises three main parts, namely a basket body, a basket sheath tube and a control handle. The basket body is made of biocompatible metal wires. The basket body can be closed and opened through the back-and-forth movement of the handle sliding block in the control handle.
The invention discloses a convenient-to-operate stone-taking basket structure, which is disclosed in Chinese patent application CN106420004A, and comprises a basket component and an operating handle, wherein the basket component is connected with the operating handle through a push rod, the operating handle comprises a shell and a sliding block, the shell is arranged in a hollow manner, the upper end surface of the shell is provided with a sliding groove, the sliding block is connected with the sliding groove in a sliding manner, the sliding block comprises an upper part and a lower part, the upper part is arranged outside the shell, and the lower part is hidden in the shell. When in operation, the thumb is directly used for extending and retracting. However, different operators of the mechanism operate according to own feelings in the process of extending and retracting, the force can be different, and part of operators can damage the net basket due to excessive force.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to cause the damage because of the operator is too big hard to the basket among the prior art, provide a novel stone basket structure of getting that has atress safety mechanism.
In order to realize the purpose, the technical scheme of the utility model is as follows: a stone-taking basket structure with a stress safety mechanism, which comprises,
a basket body;
the basket sheath tube is internally provided with a basket traction wire;
a control handle;
a handle slider slidably provided on the control handle; and the number of the first and second groups,
the stress safety mechanism is provided with a spring fixing sleeve, a spring movable seat, an inner layer guide pipe, an outer layer guide pipe, a buffer spring, an inner layer heat-shrinkable pipe, an outer layer heat-shrinkable pipe and a pushing guide pipe;
the spring fixing sleeve is arranged between the basket sheath tube and the control handle;
the spring movable seat is accommodated in the spring fixing sleeve and divides the inside of the spring fixing sleeve into a fixing sleeve front section and a fixing sleeve rear section, the front end of the basket sheath pipe extends forwards to the inside of the fixing sleeve rear section, a movable seat through hole which is communicated in the front and rear direction is formed in the spring movable seat, and the movable seat through hole is divided into a through hole front section and a through hole rear section;
the inner layer guide pipe is accommodated in the front section of the fixed sleeve, and the rear end of the inner layer guide pipe extends backwards to the inside of the rear section of the fixed sleeve through the movable seat penetrating hole;
the outer layer conduit is accommodated in the front section of the fixed sleeve and surrounds the periphery of the inner layer conduit, the rear end of the outer layer conduit extends backwards to the inside of the front section of the through hole, and the outer surface of the outer layer conduit is bonded with the inner surface of the front section of the through hole;
the buffer spring is accommodated in the front section of the fixed sleeve and surrounds the periphery of the outer layer guide pipe, the buffer spring is provided with a movable end close to the spring movable seat and a fixed end far away from the spring movable seat, and the movable end of the buffer spring is abutted against or corresponds to the spring movable seat in the front-back direction;
the inner heat-shrinkable tube is accommodated in the rear section of the fixed sleeve and surrounds the rear end of the inner catheter and the periphery of the front end of the basket sheath tube, the inner heat-shrinkable tube extends forwards to the inside of the rear section of the through hole, the outer surface of the inner heat-shrinkable tube is bonded with the inner surface of the rear section of the through hole, and the inner surface of the inner heat-shrinkable tube is bonded with the outer surface of the inner catheter and the outer surface of the basket sheath tube respectively;
the pushing catheter is accommodated in the rear part of the handle, and the rear end of the pushing catheter extends backwards to a position between the inner catheter and the outer catheter;
the basket traction wire sequentially passes through the pushing guide pipe, the inner layer guide pipe and the basket sheath pipe from the handle sliding block and finally extends to the basket body.
As a preferred scheme of the stone-taking basket structure with the stress safety mechanism, the stress safety mechanism is further provided with an outer-layer heat-shrinkable tube, and the outer-layer heat-shrinkable tube is accommodated in the rear section of the fixing sleeve and surrounds the periphery of the inner-layer heat-shrinkable tube.
As a preferred scheme of the stone-taking basket structure with the stress safety mechanism, the bonding is formed by quick-drying glue.
Compared with the prior art, the beneficial effects of the utility model reside in at least: move forward the handle sliding block is in order to snatch the calculus, utilizes buffer spring is right a reverse effort is applyed to the handle sliding block, alleviates the too big operating force of operator, avoids the operator to exert oneself the fracture of getting the stone net that too big caused, improves the security of apparatus, alleviates patient's misery, reaches the operation effect well.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the present invention, other technical features included in the technical solutions, and advantages brought by the technical features of the present invention will be further described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural appearance diagram according to an embodiment of the present invention.
Fig. 2 is a schematic view of an interior of the structure according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a wave ball screw according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram at a in fig. 2.
Fig. 5 is a schematic view of the structure at B in fig. 2 (first case).
Fig. 6 is a schematic view of the structure at B in fig. 2 (second case).
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Referring to fig. 1-2, a stone extraction basket structure with a forced safety mechanism is shown. The basket body mainly comprises a basket body 1, a basket sheath pipe 2, a control handle 3, a handle sliding block 4, a handle positioning block 5, a positioning locking mechanism 6, a stress safety mechanism 7 and the like.
The basket traction wire 20 is accommodated in the basket sheath tube 2.
The control handle 3 has a handle front portion, a handle middle portion, and a handle rear portion. The handle front portion is formed with a radially disposed screw receiving hole.
The handle sliding block 4 is slidably disposed in the middle of the handle. In this embodiment, a sliding groove extending in the front-rear direction is formed in the middle of the handle. The handle slider 4 is accommodated inside the slide groove. The handle slide block 4 is displaced in the front-rear direction along the slide groove. The basket traction wire 20 is connected with the basket body 1 and the handle sliding block 4. The handle sliding block 4 is moved back and forth, and the basket traction wire 20 drives the basket body 1 to open or close so as to grab or release the stone.
The handle sliding block 4 is formed with a sliding block limiting hole 41 arranged along the radial direction. The inner end of the sliding block limiting hole 41 is flush with the outer end of the screw accommodating hole.
The handle positioning block 5 is fixedly arranged at the rear part of the handle. In this embodiment, a positioning groove is formed on the rear portion of the handle. The handle positioning block 5 is accommodated inside the positioning groove. Further, the handle positioning block 5 is also locked and positioned by using a locking joint.
Move back handle sliding block 4, work as handle sliding block 4 with handle locating piece 5 is the back to leaning on mutually, handle locating piece 5 is right handle sliding block 4 rear end is spacing.
The positioning and locking mechanism 6 is provided with a wave ball screw 60. The wave ball screw 60 is received in the screw receiving hole. The wave ball screw 60 is a common standard for molds. Referring to fig. 3, the wave ball screw 60 has a screw housing, a screw spring and a screw top ball 600. The screw top bead 600 is exposed to the outside of the front of the handle through the screw receiving hole. The screw top bead 600 can be displaced in the radial direction by the screw spring.
The process of grabbing stones: the handle sliding block 4 moves forwards, and the basket traction wire 20 drives the basket body 1 to be gradually closed and grabbed. In-process, handle sliding block 4 will screw top pearl 600 is impressed earlier the inside of screw accommodation hole, and work as the screw accommodation hole with when the spacing hole 41 of sliding block is radial coincidence mutually (i.e. handle sliding block 4 reaches its extreme position, shows to snatch the completion), screw top pearl 600 just in time pushes up the inside of the spacing hole 41 of sliding block, ripples pearl screw 60 is right handle sliding block 4 front end is spacing, handle sliding block 4 keeps the location motionless. It is easy to see that, the operation mode does not need an operator to hold the handle sliding block 4 all the time as mentioned in the background art, so that the labor intensity of the operator can be greatly reduced, and unsafe factors that the stones fall off due to situations such as unstable grasping in the stone taking process are avoided.
The process of loosening stones: the handle sliding block 4 is pushed backwards by the operator through one-hand operation, so that the screw top bead 600 is separated from the sliding block limiting hole 41, the limitation of the wave bead screw 60 on the front end of the handle sliding block 4 is eliminated, and the operation is convenient, time-saving and labor-saving. When the handle sliding block 4 moves backwards to be abutted against the handle positioning block 5 in a forward and backward direction, the basket body 1 is restored to a released state.
Referring to fig. 4, the stressed safety mechanism 7 mainly comprises a spring fixing sleeve 71, a spring movable seat 72, an inner conduit 73, an outer conduit 74, a buffer spring 75, an inner heat-shrinkable tube 76, an outer heat-shrinkable tube 77, and a pushing conduit 78. Preferably, the inner conduit 73, the outer conduit 74, the inner heat shrinkable tube 76, the outer heat shrinkable tube 77 and the push conduit 78 are flexible tubes.
The spring fixing sleeve 71 is arranged between the basket sheath tube 2 and the control handle 3.
The spring movable seat 72 is accommodated inside the spring fixing sleeve 71 and divides the inside of the spring fixing sleeve 71 into a fixing sleeve front section and a fixing sleeve rear section. The front end of the basket sheath tube 2 extends forwards to the inside of the rear section of the fixed sleeve. The spring sliding seat 72 is formed with a sliding seat through hole 720 which is through from front to back, and the sliding seat through hole 720 is divided into a through hole front section and a through hole rear section.
The inner conduit 73 is housed inside the front section of the fixed sleeve. The rear end of the inner conduit 73 extends rearward through the sliding seat through hole 720 to the interior of the rear section of the stationary sleeve.
The outer conduit 74 is housed inside the front section of the sheath and surrounds the outer periphery of the inner conduit 73. The rear end of the outer conduit 74 extends rearwardly into the interior of the forward section of the bore. The outer face of the outer conduit 74 is bonded to the inner face of the perforated front section.
The buffer spring 75 is accommodated inside the front section of the fixing sleeve and surrounds the outer periphery of the outer conduit 74. The buffer spring 75 has a movable end close to the spring seat 72 and a fixed end far from the spring seat 72. The movable end of the buffer spring 75 abuts against or corresponds to the spring movable seat 72 in the forward and backward directions.
The inner heat shrinkable tube 76 is accommodated in the rear section of the fixing sleeve and surrounds the rear end of the inner conduit 73 and the periphery of the front end of the basket sheath tube 2. The inner heat shrink tubing 76 extends forward to the interior of the rear section of the hole. The outer face of the inner heat shrinkable tube 76 is bonded to the inner face of the rear section of the through hole. The inner surface of the inner heat shrinkable tube 76 is bonded to the outer surface of the inner catheter 73 and the outer surface of the basket sheath tube 2.
The push catheter 78 is housed inside the rear portion of the handle. The rear end of the push catheter 78 extends rearward between the inner catheter 73 and the outer catheter 74.
The outer heat shrinkable tube 77 is accommodated inside the rear section of the fixing sleeve and surrounds the periphery of the inner heat shrinkable tube 76. The outer heat shrinkable tube 77 covers the inner heat shrinkable tube, and increases the strength of the connection portion of the inner catheter 73 and the basket sheath tube 2. The inner heat shrinkable tube 76 and the outer heat shrinkable tube 77 provide flexible connection for the basket sheath tube 2, so that the basket sheath tube 2 can be effectively prevented from being broken.
The basket traction wire sequentially passes through the pushing conduit 78, the inner conduit 73 and the basket sheath tube 2 from the handle sliding block 4, and finally extends to the basket body.
Additionally, the bonding is made of quick-drying glue.
Additionally, the mating relationship between the basket body 1 and the basket drawing wires 20 may be a structure with a head (see fig. 5) or a structure without a head (see fig. 6).
The working principle of the stress safety mechanism 7 is as follows: the basket body 1 is driven by the basket traction wire 20 to receive the rear end of the basket sheath tube 2. If the force is continuously applied, the spring movable seat 72, the inner conduit 73, the outer conduit 74, the buffer spring 75, the inner heat-shrinkable tube 76, the outer heat-shrinkable tube 77 and the like are synchronously displaced forwards, and the buffer spring 75 is compressed by the spring movable seat 72, so that the excessive force is buffered, the safety of the instrument is improved, and the stone-taking net is prevented from being broken due to the excessive force applied by an operator. Without the stress safety mechanism 7, after an excessive force is applied, the basket body 1 is damaged due to the axial relative movement along the basket sheath tube 2.
The above description is only intended to illustrate embodiments of the present invention, and the description is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (3)
1. A stone-taking basket structure with a stress safety mechanism is characterized by comprising,
a basket body;
the basket sheath tube is internally provided with a basket traction wire;
a control handle;
a handle slider slidably provided on the control handle; and the number of the first and second groups,
the stress safety mechanism is provided with a spring fixing sleeve, a spring movable seat, an inner layer guide pipe, an outer layer guide pipe, a buffer spring, an inner layer heat-shrinkable pipe, an outer layer heat-shrinkable pipe and a pushing guide pipe;
the spring fixing sleeve is arranged between the basket sheath tube and the control handle;
the spring movable seat is accommodated in the spring fixing sleeve and divides the inside of the spring fixing sleeve into a fixing sleeve front section and a fixing sleeve rear section, the front end of the basket sheath pipe extends forwards to the inside of the fixing sleeve rear section, a movable seat through hole which is communicated in the front and rear direction is formed in the spring movable seat, and the movable seat through hole is divided into a through hole front section and a through hole rear section;
the inner layer guide pipe is accommodated in the front section of the fixed sleeve, and the rear end of the inner layer guide pipe extends backwards to the inside of the rear section of the fixed sleeve through the movable seat penetrating hole;
the outer layer conduit is accommodated in the front section of the fixed sleeve and surrounds the periphery of the inner layer conduit, the rear end of the outer layer conduit extends backwards to the inside of the front section of the through hole, and the outer surface of the outer layer conduit is bonded with the inner surface of the front section of the through hole;
the buffer spring is accommodated in the front section of the fixed sleeve and surrounds the periphery of the outer layer guide pipe, the buffer spring is provided with a movable end close to the spring movable seat and a fixed end far away from the spring movable seat, and the movable end of the buffer spring is abutted against or corresponds to the spring movable seat in the front-back direction;
the inner heat-shrinkable tube is accommodated in the rear section of the fixed sleeve and surrounds the rear end of the inner catheter and the periphery of the front end of the basket sheath tube, the inner heat-shrinkable tube extends forwards to the inside of the rear section of the through hole, the outer surface of the inner heat-shrinkable tube is bonded with the inner surface of the rear section of the through hole, and the inner surface of the inner heat-shrinkable tube is bonded with the outer surface of the inner catheter and the outer surface of the basket sheath tube respectively;
the pushing catheter is accommodated in the rear part of the handle, and the rear end of the pushing catheter extends backwards to a position between the inner catheter and the outer catheter;
the basket traction wire sequentially passes through the pushing guide pipe, the inner layer guide pipe and the basket sheath pipe from the handle sliding block and finally extends to the basket body.
2. The stone extraction basket structure with the stress safety mechanism as claimed in claim 1, wherein the stress safety mechanism further comprises an outer heat-shrinkable tube, the outer heat-shrinkable tube is accommodated inside the rear section of the fixing sleeve and surrounds the periphery of the inner heat-shrinkable tube.
3. The structure of the stone-taking basket with the stress safety mechanism as claimed in claim 1 or 2, wherein the bonding is made of quick-drying glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920201720.2U CN210124816U (en) | 2019-02-15 | 2019-02-15 | Stone-taking basket structure with stress safety mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920201720.2U CN210124816U (en) | 2019-02-15 | 2019-02-15 | Stone-taking basket structure with stress safety mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN210124816U true CN210124816U (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920201720.2U Active CN210124816U (en) | 2019-02-15 | 2019-02-15 | Stone-taking basket structure with stress safety mechanism |
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| CN (1) | CN210124816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117338374A (en) * | 2023-10-07 | 2024-01-05 | 上海威高医疗技术发展有限公司 | Basket stone taking device |
-
2019
- 2019-02-15 CN CN201920201720.2U patent/CN210124816U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117338374A (en) * | 2023-10-07 | 2024-01-05 | 上海威高医疗技术发展有限公司 | Basket stone taking device |
| CN117338374B (en) * | 2023-10-07 | 2024-09-27 | 上海威高医疗技术发展有限公司 | Basket stone taking device |
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