CN212140534U

CN212140534U - Limiting mechanism of cold knife for cooperating ureter nephroscope

Info

Publication number: CN212140534U
Application number: CN202020237152.4U
Authority: CN
Inventors: 包国华; 张蔚飞; 孔晓晶
Original assignee: HANGZHOU HAWK OPTICAL ELECTRONIC INSTRUMENTS CO Ltd
Current assignee: HANGZHOU HAWK OPTICAL ELECTRONIC INSTRUMENTS CO Ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-12-15
Anticipated expiration: 2030-03-02

Abstract

The utility model relates to a medical endoscope. The utility model provides a cooperation ureter nephroscope is with stop gear of cold knife, includes the manipulator of ureter nephroscope, is equipped with the endoscope seat in the one end of manipulator, is equipped with the connecting seat at the other end of manipulator, is equipped with the person in charge between endoscope seat and connecting seat, has cup jointed the slider that can follow the main pipe axis and remove on being responsible for, is equipped with cold knife guide channel below being responsible for, is equipped with cold knife fixed knot on the slider and constructs. The utility model provides a cold knife limit structure which has simple structure, can quickly and safely reach the cutting depth under the examination of an endoscope, effectively reduces the diameter of a tube of the endoscope and simplifies the structure of the endoscope, and is convenient for the advance and retreat operation of the cold knife and is matched with a ureteroscope for use, and the cold knife is positioned outside the endoscope; the technical problems that an endoscope and an instrument are not smoothly matched, the endoscope with an instrument channel is complex in structure and the cold knife is inconvenient to operate in the prior art are solved.

Description

Limiting mechanism of cold knife for cooperating ureter nephroscope

Technical Field

The utility model relates to a medical endoscope especially relates to a stop gear of cold sword that uses with ureteroscope cooperation.

Background

At present, in the medical field, the examination, diagnosis and treatment of minimally invasive surgery are highly determined by the industry, wherein a medical endoscope is used as one of minimally invasive surgical instruments, can go deep into the body of a patient, can observe a focus part more intuitively, has accurate diagnosis result, has small damage to the human body, relieves the pain of the patient, and enables the patient to recover better and faster. The endoscope is mainly used in natural cavity and especially complex cavity surgery, such as bladder or biliary calculus surgery.

With the development of science and technology, instruments in modern surgical operations are more and more, and the surgical instruments can well help doctors to complete the operations, so that the convenience and the safety are improved. In urological surgery, removal of kidney stones requires interventional therapy, and generally, intrarenal lithotomy and percutaneous nephrolithotomy are performed by crushing stones with external shock waves. Therefore, in operation, an endoscope is often used and then an instrument is matched to perform the operation.

As in the Chinese patent: "a medical uretero-renoscope (CN 201620907037.7)" includes the mirror body, is equipped with fixed mirror tube in mirror body left side, and fixed mirror tube right side is equipped with mirror tube quick plug, and mirror tube quick plug passes through mirror tube quick socket and mirror body coupling, and the mirror tube quick plug outside is equipped with plug sealing connector, and the plug sealing connector outside is equipped with mirror tube connection antiskid line, and fixed mirror tube downside is equipped with supplementary mount. The prior uretero-nephroscope is provided with an instrument channel in a scope tube, and instruments are inserted into the instrument channel, so that the operation of the instruments is not convenient.

Disclosure of Invention

The utility model provides a cold knife limiting structure which has simple structure, under the examination of an endoscope, the cold knife can quickly and safely reach the cutting depth, the cold knife is positioned outside the endoscope, the diameter of a tube of the endoscope is effectively reduced, the structure of the endoscope is simplified, and the advancing and retreating operation of the cold knife is convenient to match with the ureteroscope for use; the technical problems that an endoscope and an instrument are not smoothly matched, the endoscope with an instrument channel is complex in structure and the cold knife is inconvenient to operate in the prior art are solved.

The above technical problem of the present invention is solved by the following technical solutions: the utility model provides a cooperation ureter nephroscope is with stop gear of cold knife, includes the manipulator of ureter nephroscope, is equipped with the endoscope seat in the one end of manipulator, is equipped with the connecting seat at the other end of manipulator, is equipped with the person in charge between endoscope seat and connecting seat, has cup jointed the slider that can follow the main pipe axis and remove on being responsible for, is equipped with cold knife guide channel below being responsible for, is equipped with cold knife fixed knot on the slider and constructs. The endoscope seat is used for grafting and fixed endoscope, and the connecting seat is used for connecting the sheath pipe structure, and the endoscope pipe is in being responsible for then arriving the sheath, has arranged the guide way of cold sword in the below parallel of being responsible for, and the cold sword is installed in the guide way, and the other end of cold sword with be located the sheath intraductally, cold sword is parallel with the endoscope pipe. And then the cold knife is fixed through the cold knife fixing structure. The end part of the cold knife is fixedly positioned in the sliding block, and the purpose of moving the cold knife is achieved by moving the sliding block. After the sheath tube is inserted into the ureter through the urethra, the narrow part is found under the visual effect of the endoscope, the sliding block is pushed, the cold knife is driven to extend out of the sheath tube of the endoscope to perform incision, and the purpose of safe cutting depth is achieved.

Preferably, the sliding block is provided with a sliding block positioning structure, and the sliding block positioning structure comprises a limiting rod arranged on the sliding block. The limiting rod can be made into a telescopic rod or a rotary rod, and the distance between the sliding block and the connecting seat after the sliding block moves along the main pipe is determined by adjusting the length or the position of the limiting rod. Therefore, the position of the cold knife is adjusted to form a multi-gear control of the extension length of the cold knife, and the purpose of safe cutting depth is achieved.

More preferably, the limiting rod is fixed on the sliding block through a rotating shaft, and the rotating angle range of the limiting rod is 90 degrees. The cold knife has two gears to control the extending length, and the adjustment controllability is good.

Preferably, the cold knife guide channel comprises a guide hole formed in the connecting seat and a guide hole formed in the sliding block, and the axes of the two guide holes are overlapped. A cold knife guide channel parallel to the main pipe is formed by the guide holes on the connecting seat and the sliding block, so that the cold knife is ensured to be parallel to the main pipe after being installed, namely to be parallel to the endoscope tube of the endoscope.

Preferably, the cold knife fixing structure comprises a knife locking seat arranged on the sliding block, a fixing hole is formed in the knife locking seat, a locking piece is arranged on one side of the fixing hole, a locking groove is formed in the end portion of the cold knife, and the locking piece is fixed in the locking groove. The cold knife is convenient to assemble and disassemble, and the fixing structure is firm.

Preferably, the connecting seat is sleeved with a front handle, the sliding block is provided with a rear handle, and an elastic connecting structure is arranged between the connecting seat and the sliding block. The rear handle drives the sliding block to move towards the front handle direction, the cold knife is operated to cut, and after cutting, automatic reset can be realized by the elasticity of the elastic connection structure.

Preferably, the elastic connection structure comprises an inner rotating plate and an outer rotating plate, the inner rotating plate is connected with the connecting seat, the outer rotating plate is connected with the sliding block, the inner rotating plate is connected with the connecting seat, the inner rotating plate is hinged with the outer rotating plate, and a torsion spring is arranged at the hinged position. The structure is simple.

Preferably, the connecting seat on be connected with sheath pipe structure, sheath pipe structure includes sheath lock and the sheath body, the sheath body passes through the sheath lock to be fixed on the connecting seat, is equipped with the sheath pipe on the sheath body, the sheath pipe with be responsible for the intercommunication, the mirror tube and the cold sword that have the endoscope are worn to connect in the sheath pipe.

Preferably, one side of the cold knife is provided with a sleeve which is sleeved outside the endoscope tube of the endoscope parallel to the cold knife. The cold knife is convenient to position, and the cold knife can keep parallel relation with the endoscope tube of the endoscope.

Therefore, the utility model discloses a stop gear who cooperates cold knife for ureter nephroscope possesses following advantage: simple structure can drive the cold sword through slider slip and reach the purpose of depth of cut fast safely, and the cold sword is installed alone, avoids with the mutual influence of endoscope, convenient operation.

Drawings

Fig. 1 is a front view of a stop mechanism of a cold knife for cooperating with a ureteral nephroscope of the present invention.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is a sectional view taken at a-a of fig. 2.

Fig. 4 is a schematic cross-sectional view of fig. 1 with the sheath, endoscope and cold knife installed.

Fig. 5 is a schematic view of the cold knife of fig. 4.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b):

as shown in figures 1 and 2, the limiting mechanism matched with the cold knife for the ureteral nephroscope comprises a main tube 3, a sliding block 9 is sleeved outside the main tube 3, and a rear handle 8 is connected to the sliding block 9 through a screw. The connecting seat 2 is installed at one end of the main pipe 3, and the endoscope seat 7 is sleeved at the other end of the main pipe 3. A front handle 1 is fixed on the connecting seat 2. The connecting base 2 is connected with one end of an inner rotating plate 4, the sliding block 9 is connected with one end of an outer rotating plate 6, the inner rotating plate 4 is hinged with the outer rotating plate 6, and the hinged part of the inner rotating plate 4 and the outer rotating plate 6 is provided with a torsion spring 5. Through holding front handle 1 and back handle 8 by hand, adjust the position between the two, slider 9 is close to connecting seat 2 along being responsible for 3 motions, compression torsional spring 5, when needing slider 9 to retreat, loosens the front and back handle of holding, utilizes torsional spring 5 torsion, pushes away slider 9 to endoscope seat 7 one side backward.

As shown in fig. 3, a cold knife guide hole 13 is formed in the slider 9, a cold knife guide hole 13 is also formed in the connecting seat 2, the axes of the two guide holes are overlapped to form a cold knife guide channel, and the axis of the cold knife guide channel is parallel to the axis of the main pipe 3. An O-shaped ring 12 is arranged on one side of a cold knife guide hole 13 of the connecting seat. The end part of the cold knife guide hole in the sliding block 9 is provided with a knife locking seat 16, a through hole is formed in the knife locking seat, a locking part 26 is installed in the through hole, the end part of the locking part 26 is inserted into a clamping groove 25 at the end part of the cold knife, and the cold knife 19 is fixed on the knife locking seat 16 through rotating a locking nut 10 at the end part of the locking part.

A limiting rod 11 is fixed on one side of the sliding block 9, which faces the connecting seat 2, through a rotating shaft, the moving range of the limiting rod 11 is 90 degrees, namely when the limiting rod 11 is parallel to the main pipe 3, the minimum distance between the connecting seat 2 and the sliding block 9 is the length of the limiting rod 11. When the adjusting limiting rod 11 is perpendicular to the main pipe 3, the minimum distance between the connecting seat 2 and the sliding block 9 is 0.

As shown in fig. 4 and 5, an endoscope lock 15 is provided outside the endoscope base 14, and after the endoscope 23 is inserted into the endoscope base 14, the endoscope 23 is fixed to the endoscope base 14 by the scope lock pin 22 and the endoscope lock 15. Install sheath pipe structure on connecting seat 2, sheath pipe structure includes sheath lock 21 and sheath body 20, and sheath body 20 passes through sheath lock 21 to be fixed on connecting seat 2, is equipped with sheath pipe 18 on sheath body 20, and sheath pipe 18 communicates with being responsible for 3, and the mirror tube 17 and the cold sword 19 of endoscope have worn to connect in the sheath pipe 18.

When the cold knife is used, the cold knife 19 is firstly inserted into the cold knife guide channel, and one end of the cold knife is fixed in the sliding block 9 through the locking piece 26. A sleeve 24 is arranged on one side of the cold knife in the sheath tube, then an endoscope 23 is inserted from the endoscope seat 14 in a penetrating way, the endoscope tube 17 is positioned in the sheath tube 18, the sleeve 24 on the side surface of the cold knife 19 is sleeved outside the endoscope tube 17 of the endoscope, the parallel relation between the cold knife 19 and the endoscope is ensured, and the cold knife 19 is fixed. After the endoscope and the cold knife are assembled, after a sheath tube of the endoscope sheath is inserted into a ureter through a urethra, under the visual effect of the endoscope, a narrow part is found, the sliding block 9 is pushed to drive the cold knife to extend out of the sheath tube 18 for incision, and two gears control the extending length of the cold knife 19 through the movable limiting rod 11, so that the purpose of safe cutting depth is achieved.

Claims

1. The utility model provides a cooperation ureter nephroscope is with stop gear of cold knife, includes the operation ware of ureter nephroscope, is equipped with the endoscope seat in the one end of operation ware, is equipped with connecting seat, its characterized in that at the other end of operation ware: a main pipe is arranged between the endoscope seat and the connecting seat, a sliding block which can move along the axial line of the main pipe is sleeved on the main pipe, a cold knife guide channel is arranged below the main pipe, and a cold knife fixing structure is arranged on the sliding block.

2. The cold knife stop mechanism for cooperating with uretero nephroscope according to claim 1, characterized in that: the slider on be equipped with slider location structure, slider location structure including installing the gag lever post on the slider.

3. The cold knife stop mechanism for cooperating with uretero nephroscope according to claim 2, characterized in that: the limiting rod is fixed on the sliding block through a rotating shaft, and the rotating angle range of the limiting rod is 90 degrees.

4. The cold knife stop mechanism for cooperating with uretero nephroscope according to claim 1, 2 or 3, characterized in that: the cold knife guide channel comprises a guide hole formed in the connecting seat and a guide hole formed in the sliding block, and the axes of the two guide holes are overlapped.

5. The cold knife stop mechanism for cooperating with uretero nephroscope according to claim 1, 2 or 3, characterized in that: the cold knife fixing structure comprises a knife locking seat arranged on the sliding block, a fixing hole is formed in the knife locking seat, a locking piece is arranged on one side of the fixing hole, a locking groove is formed in the end portion of the cold knife, and the locking piece is fixed in the locking groove.

6. The cold knife stop mechanism for cooperating with uretero nephroscope according to claim 1, 2 or 3, characterized in that: the connecting seat is sleeved with a front handle, the sliding block is provided with a rear handle, and an elastic connecting structure is arranged between the connecting seat and the sliding block.

7. The cold knife stop mechanism for cooperating with uretero nephroscope according to claim 6, wherein: the elastic connection structure comprises an inner rotating plate and an outer rotating plate, the inner rotating plate is connected with the connecting seat, the outer rotating plate is connected with the sliding block, the inner rotating plate is connected with the connecting seat, the inner rotating plate is hinged with the outer rotating plate, and a torsional spring is arranged at the hinged position.

8. The cold knife stop mechanism for cooperating with uretero nephroscope according to claim 1, 2 or 3, characterized in that: the connecting seat on be connected with sheath pipe structure, sheath pipe structure includes the sheath lock and the sheath body, the sheath body passes through the sheath lock to be fixed on the connecting seat, is equipped with the sheath pipe on the sheath body, the sheath pipe with be responsible for the intercommunication, the mirror pipe and the cold sword that have worn the endoscope in the sheath pipe.

9. The cold knife stop mechanism for cooperating with uretero nephroscope according to claim 8, wherein: one side of the cold knife is provided with a sleeve which is sleeved outside the endoscope tube of the endoscope parallel to the cold knife.