Disposable percutaneous nephrolithy visually expands sheath
Technical field
The utility model relates to a kind of Medical Devices, more particularly to a kind of percutaneous nephrolithy.
Background technique
The method of surgical intervention kidney stone has: Lithotomy, external stone crushing, percutaneous nephrolithotomy.Traditional " operates on
Take stone " method, need to do the big notch of 20cm or so in waist, cut the muscle of waist, kidney is separated,
One osculum of renal plevis or kidney parenchyma incision, calculus is taken out.This method damage is big, bleeding is more, painful weight, restores slow.
Usually 7 days or so in hospital are needed after operation.Because operative incision is big, not only skin unsightly, and the physical strength of postoperative patients
It is impacted bigger.Compared with open surgery, percutaneous nephrolithotomy have damage it is small, painful it is light, take stone thoroughly, restore fast etc.
Advantage.The notch of waist is usually less than 1cm, because not cutting muscle, does not affect the appearance not only, and to labour after operation
Power has little effect.It can leave hospital within usual 2~3 days after operation.Compared with laparoscope takes stone, percutaneous nephrolithotomy is to kidney
And the structure influence of surrounding is small, does not influence later various kidney surgeries.Compared with external stone crushing, its treatment cycle is short, imitates
Fruit is got instant result, and the influence to renal function is also smaller.
But there is also defects for traditional percutaneous nephrolithy, such as when being expanded after puncture, traditional expansion
Sheath is not due to it is observed that the position that expansion sheath is advanced, be easy to cause and puncture through pursuit of advanced studies into malpractices such as nephrorrhagias.
Utility model content
The utility model is exactly to solve the above-mentioned problems, to overcome present in percutaneous nephrolithy puncture expansion in the prior art
Problem, the utility model provide disposable percutaneous nephrolithy and expand sheath visually with meet demand.
To achieve the goals above, the technical solution of the utility model is as follows:
Disposable percutaneous nephrolithy visually expands sheath, including tearing sheath and is set to the intrathecal expansion pipe of tearing, special
Sign is that the expansion pipe is cylindrical shape, and front end is circular cone, and the top of circular cone is circular flat, is provided in the expansion pipe
Optical-fibre channel and silk guide passage, the optical-fibre channel and silk guide passage are arranged in parallel with expansion pipe, and optical-fibre channel and seal wire
Channel is pierced by from circular flat.
Above-mentioned disposable percutaneous nephrolithy visually expands sheath, which is characterized in that the cross-sectional shape of the optical-fibre channel
It is one of following: semicircle, ellipse, triangle;The cross-sectional shape of the silk guide passage is circle.
Above-mentioned disposable percutaneous nephrolithy visually expands sheath, which is characterized in that further includes tearing sheath connector and expansion pipe
Connector, the tearing sheath connector are connect with tearing sheath, and are torn sheath connector and torn sheath and be set in expansion pipe outer wall;The expansion
It opens pipe fitting to connect with expansion pipe, the expansion pipe fitting is connect with tearing sheath connector.
Above-mentioned disposable percutaneous nephrolithy visually expands sheath, which is characterized in that the expansion pipe fitting includes three chambers
Road, respectively seal wire cavity, optical fiber cavity and fluid injection cavity, the optical fiber cavity and fluid injection cavity are connected to optical-fibre channel, institute
Seal wire cavity is stated to be connected to silk guide passage.
Above-mentioned disposable percutaneous nephrolithy visually expands sheath, which is characterized in that further includes for connecting expansion pipe fitting
With the connector of tearing sheath connector, the both ends of the connector are detachably connected with expansion pipe fitting and tearing sheath connector respectively.
Above-mentioned disposable percutaneous nephrolithy visually expands sheath, which is characterized in that is provided with suction on the tearing sheath connector
Draw channel.
Above-mentioned disposable percutaneous nephrolithy visually expands sheath, which is characterized in that is provided with two on the tearing sheath connector
A attraction channel, one of attraction channel are through-hole, another attraction channel is blind way, and two attraction channels are symmetrically set
It sets.
Above-mentioned disposable percutaneous nephrolithy visually expands sheath, which is characterized in that the seal wire cavity and optical fiber cavity
It is provided with step on inner wall, is provided with external screw thread on outer wall, further includes locked joints and locked cock, the locked cock is set to step
Locate, is provided with interior spiral shell corresponding with the external screw thread on seal wire cavity and optical fiber cavity pipeline outer wall on the inner wall of the locked joints
Line, and the inner wall of locked joints is additionally provided with a circle and squeezes circle, and the top for squeezing circle is contacted with locked cock.
The beneficial effects of the utility model are: visible image can be applied when carrying out dilated penetration using visual expansion sheath
System prevents routine operation and punctures through pursuit of advanced studies into malpractices such as nephrorrhagias effectively to expansion positioning is punctured.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the utility model;
Fig. 2 is the schematic side view for expanding pipe;
Fig. 3 is the enlarged diagram in Fig. 1 at A;
Fig. 4 is the enlarged diagram in Fig. 1 at B.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
Referring to Fig. 1-Fig. 3, disposable percutaneous nephrolithy visually expands sheath, including tears sheath 100 and be set to tearing sheath
Expansion pipe 200 in 100, expansion pipe 200 are cylindrical shape, and front end is circular cone, and the top of circular cone is circular flat 230, expansion pipe
Optical-fibre channel 210 and silk guide passage 220 are provided in 200.Wherein optical-fibre channel 210 can be by optical fiber and water filling, and seal wire is logical
Road 220 can pass through seal wire.Optical-fibre channel 210 and silk guide passage 220 are arranged in parallel with expansion pipe 200, and optical-fibre channel 210
It is pierced by from circular flat 230 with silk guide passage 220.
In the present invention, the cross-sectional shape of optical-fibre channel 210 is semicircle, ellipse or triangle, works as optical fiber
When the cross-sectional shape in channel 210 is triangle, three angles of triangle are fillet;The cross-sectional shape of silk guide passage 220 is
It is round.The considerations of setting semicircle, ellipse or triangle for the cross-sectional shape of optical-fibre channel 210 is due in this reality
With novel middle optical-fibre channel 210 and all concentrated settings of silk guide passage 220 on circular flat 230, while it being limited to whole expansion again
The diameter of pipe 200 is opened, after only flattening the cross section of optical-fibre channel 210, is convenient for optical-fibre channel 210 and silk guide passage
220 are all pierced by from circular flat 230.
It further include tearing sheath connector 300 and expansion pipe fitting 400, tearing sheath connector 300 is connect with tearing sheath 100, is torn
It uses the technique that heat is melted or glue is Nian Jie to be attached between sheath connector 300 and tearing sheath 100, and tears 300 He of sheath connector
Tearing sheath 100 is set in expansion 200 outer wall of pipe;Expansion pipe fitting 400 is connect with expansion pipe 200, expansion pipe fitting 400 and tearing
Sheath connector 300 connects.It further include for connecting expansion pipe fitting 400 and tearing the connector 500 of sheath connector 300, connector 500
Both ends be detachably connected respectively with expansion pipe fitting 400 and tearing sheath connector 300, the mode of connection can be to pass through buckle
Mode, can also be by way of interference fit.
It expands pipe fitting 400 and includes three cavities, respectively seal wire cavity 410, optical fiber cavity 420 and fluid injection cavity 430,
Optical fiber cavity 420 and fluid injection cavity 430 are connected to optical-fibre channel 210, and seal wire cavity 410 is connected to silk guide passage 220.
Attraction channel 310 is provided on tearing sheath connector 300.And it is logical there are two attracting to tear setting on sheath connector 300
Road 310, one of attraction channel 310 are through-hole, another attraction channel 320 is blind way, and two attraction channels 310 are right
Claim setting.
Referring to Fig. 4, it is provided with step 610 on the inner wall of seal wire cavity 410 and optical fiber cavity 420, is provided on outer wall
External screw thread 620 further includes locked joints 630 and locked cock 640, and locked cock 640 is set at step 610, the inner wall of locked joints 630
On be provided with internal screw thread 650 corresponding with the external screw thread 620 on 420 outer wall of seal wire cavity 410 and optical fiber cavity, and lock
The inner wall of connector 630 is additionally provided with a circle and squeezes circle 660, and the top for squeezing circle 660 is contacted with locked cock 640, by that will lock
To determine connector 630 and is installed to seal wire cavity 410 and optical fiber cavity 420, twisting screw thread to squeeze 660 extruding locked cock 640 of circle, so that
Deformation occurs for locked cock 640, thus seal wire and optical fiber that locking is passed through from locked cock 640.
In operation, optical fiber and seal wire are passed through into optical fiber cavity 420 respectively and seal wire cavity 410 enters optical-fibre channel 210
With silk guide passage 220, final seal wire stretches out the top of silk guide passage 220, and optical fiber is flushed with the top of optical-fibre channel 210.So
Expansion pipe 200 expands puncturing hole afterwards, and due to there is the presence of optical fiber, what operator can will be apparent that sees expansion pipe 200
Advanced positions can be filled the water by fluid injection cavity 430 if it find that the optical fiber front end visual field is unclear, when expansion pipe 200
The case where after reaching in renal plevis, halting, not will cause degree of puncturing through thus or pierce through kidney appearance.Then sheath will be torn
It stays in puncturing hole, while expansion pipe fitting 400 being removed from tearing sheath connector 300, then extract expansion pipe 200.It
Subsequent procedures instrument is connect on tearing sheath 300 afterwards.
The beneficial effects of the utility model are: visible image can be applied when carrying out dilated penetration using visual expansion sheath
System prevents routine operation and punctures through pursuit of advanced studies into malpractices such as nephrorrhagias effectively to expansion positioning is punctured.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, the utility model can also on the premise of not departing from the spirit and scope of the utility model
There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model is wanted
Protection scope is asked to be defined by appended claims and its equivalent.