CN209932895U - Stone-taking basket structure with positioning and locking mechanism - Google Patents
Stone-taking basket structure with positioning and locking mechanism Download PDFInfo
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- CN209932895U CN209932895U CN201920201719.XU CN201920201719U CN209932895U CN 209932895 U CN209932895 U CN 209932895U CN 201920201719 U CN201920201719 U CN 201920201719U CN 209932895 U CN209932895 U CN 209932895U
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Abstract
A stone-taking basket structure with a positioning and locking mechanism comprises a basket body; the basket sheath tube is internally provided with a basket traction wire; the control handle is provided with a handle front part, a handle middle part and a handle rear part, and a screw accommodating hole arranged along the radial direction is formed in the handle front part; the handle sliding block is arranged in the middle of the handle in a sliding manner and can move in the front-back direction, and a sliding block limiting hole arranged along the radial direction is formed in the handle sliding block; a handle positioning block fixedly arranged at the rear part of the handle; and the positioning locking mechanism is provided with a wave ball screw, the wave ball screw is accommodated in the screw accommodating hole, the wave ball screw is provided with a screw top ball, and the screw top ball penetrates out of the screw accommodating hole to be exposed to the outer side of the front part of the handle. The utility model has the advantages that: the labor intensity of operators is reduced, and unsafe factors of stone falling caused by unstable grasping 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 location locking mechanism extensively is used for the wicresoft intervention operation of biliary tract, uropoiesis stone disease.
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 utility model discloses a chinese utility model patent CN206995303U announces "get stone basket" provides a structure of seting up a plurality of draw-in grooves along the slip direction of sliding sleeve, and aim at carries on the sliding sleeve spacing, avoids getting stone basket and can't lock after the calculus is got to the cover, needs to make the calculus restricted in the basket prevent to drop through artifical the holding. However, when the mechanism releases stones, the screw rod needs to be manually loosened, the spring and the connecting rod need to be adjusted, the mechanism needs to be reset before the stones are taken again, and the operation is time-consuming when the stones are taken repeatedly.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that the spacing and stone taking process operation that adopt artifical mode of holding to realize the handle sliding block among the prior art is comparatively troublesome, provides a neotype stone taking basket structure that has location locking mechanism.
In order to realize the purpose, the technical scheme of the utility model is as follows: a stone-taking basket structure with a positioning and locking mechanism, which comprises,
a basket body;
the basket sheath tube is internally provided with a basket traction wire;
the control handle is provided with a handle front part, a handle middle part and a handle rear part, and a screw accommodating hole arranged along the radial direction is formed in the handle front part;
the handle sliding block is arranged in the middle of the handle in a sliding manner and can move in the front-back direction, and a sliding block limiting hole arranged along the radial direction is formed in the handle sliding block;
the handle sliding block is fixedly arranged at the rear part of the handle, the handle sliding block is moved backwards, and when the handle sliding block is abutted with the handle positioning block forwards and backwards, the handle positioning block limits the rear end of the handle sliding block; and the number of the first and second groups,
the positioning locking mechanism is provided with a wave ball screw, the wave ball screw is accommodated in the screw accommodating hole, the wave ball screw is provided with a screw top ball, the screw top ball penetrates out of the screw accommodating hole and is exposed to the outer side of the front part of the handle, the handle sliding block is moved forwards, when the screw accommodating hole is radially overlapped with the sliding block limiting hole, the screw top ball is just jacked into the sliding block limiting hole, and the wave ball screw limits the front end of the handle sliding block;
the basket traction wire is used for connecting the basket body and the handle sliding block.
As a preferable scheme of the stone-taking basket structure with the positioning and locking mechanism, a sliding groove extending in the front-back direction is formed in the middle of the handle, and the handle sliding block is accommodated in the sliding groove.
As a preferable scheme of the stone-taking basket structure with the positioning and locking mechanism, a positioning groove is formed on the rear part of the handle, and the handle positioning block is accommodated inside the positioning groove.
Compared with the prior art, the beneficial effects of the utility model reside in at least: 1) the screw carries the pearl to push up go into the inside in the spacing hole of sliding block with this the ripples pearl screw is right handle sliding block front end is spacing, alleviates operator's intensity of labour greatly, avoids getting the emergence of the unsafe factor that the stone drops because of grasping circumstances such as unstable causing the calculus. 2) The calculus is easy to loosen, an operator only needs to operate with one hand, the handle sliding block is pushed by fingers, the screw top beads are separated from the sliding block limiting holes, and therefore the limitation of the wave bead screw to the front end of the handle sliding block is eliminated, the operation is convenient, and time and labor are saved.
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 basket construction with a detent locking 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 line 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 positioning and locking mechanism is characterized by comprising,
a basket body;
the basket sheath tube is internally provided with a basket traction wire;
the control handle is provided with a handle front part, a handle middle part and a handle rear part, and a screw accommodating hole arranged along the radial direction is formed in the handle front part;
the handle sliding block is arranged in the middle of the handle in a sliding manner and can move in the front-back direction, and a sliding block limiting hole arranged along the radial direction is formed in the handle sliding block;
the handle sliding block is fixedly arranged at the rear part of the handle, the handle sliding block is moved backwards, and when the handle sliding block is abutted with the handle positioning block forwards and backwards, the handle positioning block limits the rear end of the handle sliding block; and the number of the first and second groups,
the positioning locking mechanism is provided with a wave ball screw, the wave ball screw is accommodated in the screw accommodating hole, the wave ball screw is provided with a screw top ball, the screw top ball penetrates out of the screw accommodating hole and is exposed to the outer side of the front part of the handle, the handle sliding block is moved forwards, when the screw accommodating hole is radially overlapped with the sliding block limiting hole, the screw top ball is just jacked into the sliding block limiting hole, and the wave ball screw limits the front end of the handle sliding block;
the basket traction wire is used for connecting the basket body and the handle sliding block.
2. The structure of the stone-taking basket with the positioning and locking mechanism as claimed in claim 1, wherein the handle has a sliding groove formed in the middle part thereof and extending in the front-rear direction, and the handle sliding block is received in the sliding groove.
3. The stone extraction basket structure with the positioning and locking mechanism as claimed in claim 1, wherein the handle has a positioning groove formed on the rear portion thereof, and the handle positioning block is received in the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920201719.XU CN209932895U (en) | 2019-02-15 | 2019-02-15 | Stone-taking basket structure with positioning and locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920201719.XU CN209932895U (en) | 2019-02-15 | 2019-02-15 | Stone-taking basket structure with positioning and locking mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN209932895U true CN209932895U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920201719.XU Active CN209932895U (en) | 2019-02-15 | 2019-02-15 | Stone-taking basket structure with positioning and locking mechanism |
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| CN (1) | CN209932895U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109646075A (en) * | 2019-02-15 | 2019-04-19 | 深圳市奥斯福医疗器械有限公司 | A kind of stone extraction basket structure |
| CN112842465A (en) * | 2020-12-24 | 2021-05-28 | 上海埃尔顿医疗器械有限公司 | Flower-shaped stone-taking net basket for flexible endoscope |
-
2019
- 2019-02-15 CN CN201920201719.XU patent/CN209932895U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109646075A (en) * | 2019-02-15 | 2019-04-19 | 深圳市奥斯福医疗器械有限公司 | A kind of stone extraction basket structure |
| CN112842465A (en) * | 2020-12-24 | 2021-05-28 | 上海埃尔顿医疗器械有限公司 | Flower-shaped stone-taking net basket for flexible endoscope |
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