CN211355353U - Transmission structure of endoscope apparatus - Google Patents

Abstract

The utility model discloses a transmission structure of an endoscope instrument, which comprises a handle part, a sheath tube, a flow guide tube, a traction wire, a cutting knife and an injection needle; the handle part comprises a first handle, a second handle, an injection tube and an electrode tube; an electrode tube and an injection tube which can move back and forth are arranged in the second handle, the electrode tube is in transmission connection with the injection tube through a transmission assembly, and the electrode tube is driven to move towards the direction opposite to the moving direction of the injection tube through the transmission assembly when the injection tube moves forwards or backwards; the transmission assembly comprises a plurality of transmission pieces arranged in the second handle, and a transmission belt is wound on the plurality of transmission pieces; the injection tube and the electrode tube move in opposite directions through the opposite movement of the conveyor belt A section and the conveyor belt B section. The structure realizes the reverse movement of each functional part through the linkage of the transmission assembly between the liquid injection function and the electric cutting function, thereby eliminating the accidental starting of the standby function and avoiding causing accidental injury to patients or interference to the operation process.

Description

Transmission structure of endoscope apparatus

Technical Field

The utility model relates to a multi-functional linkage structure for apparatus under scope, more specifically say, it relates to the transmission structure of an endoscope apparatus.

Background

With the development of endoscopic technology in recent years, endoscopic tissue biopsy, endoscopic mucosal resection and endoscopic mucosal dissection are widely applied, and play a key role in discovery, diagnosis and treatment of gastrointestinal hemorrhage, stenosis, polypectomy and early cancer of the digestive tract. The common instruments in the market at present are mainly single-function high-frequency electric cutting instruments, single-function electric coagulation instruments and single-function injection instruments under endoscope; a small number of manufacturers provide devices that combine the functions of electrosection and electrocoagulation, and very few manufacturers provide devices that combine the functions of electrosection and injection. However, the latter often adopts a mode of controlling the moving parts with different functions respectively, for example, a combined electric knife of the hangzhou angjex medical science and technology limited company, the patent numbers are: CN104055572A discloses a cylindrical combined high-frequency surgical instrument, which does not relate to the combined injection function; a high-frequency cutter for an endoscope of Shanghai Ellton medical instruments Limited has the following patent numbers: CN203861344U, discloses a high frequency cutter for endoscope, which does not relate to the combined injection function; a high-frequency cutter for an endoscope of Shanghai Ellton medical instruments Limited has the following patent numbers: CN201420273038.1, discloses a high frequency cutter for endoscope with a flushing hole in the cutter head; a combination electrotome of Hangzhou Anjiesi medical science and technology ltd, the patent number is: CN201410281645.7 discloses a combined electric knife, the knife head comprises at least two or more knife heads capable of moving or rotating relatively to each other. However, the control method of the above patent has some disadvantages: 1) the complexity of the doctor in the operation is increased; 2) accidents occur due to improper operation, such as: during the electric excision, the injection needle is pushed out carelessly; or during injection, the electric knife is pushed out carelessly.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a transmission structure of endoscope apparatus, this structure can realize the reverse motion of syringe needle and cutting knife through drive assembly, has eliminated the unexpected start-up of function of awaiting orders, has avoided causing unexpected injury or causing the interference to the operation process to patient.

In order to achieve the above purpose, the utility model provides a following technical scheme: a transmission structure of an endoscope instrument comprises a handle part, a sheath tube, a guide tube, a traction wire, a cutting knife and an injection needle; the handle part comprises a first handle, a second handle, an injection tube and an electrode tube;

an electrode tube and an injection tube which can move back and forth are arranged in the second handle, the electrode tube is in transmission connection with the injection tube through a transmission assembly, and the electrode tube is driven to move towards the direction opposite to the moving direction of the injection tube through the transmission assembly when the injection tube moves forwards or backwards;

the transmission assembly comprises a plurality of transmission pieces arranged in the second handle, at least two transmission pieces are arranged in the front and back direction, and a conveyor belt is wound on the plurality of transmission pieces; the conveyer belt includes conveyer belt A section and the conveyer belt B section opposite with conveyer belt A section motion direction, conveyer belt A section and electrode tube fixed connection, conveyer belt B section and injection syringe fixed connection make injection syringe and electrode tube move to opposite direction through the opposite movement of conveyer belt A section and conveyer belt B section.

When the first handle is pushed, the injection tube and the section B of the conveyor belt in the second handle are driven to move forwards, the injection tube is pushed to extend out of the front end of the sheath tube through the guide tube connected with the injection tube, meanwhile, the section A of the conveyor belt on the conveyor belt drives the electrode tube to move backwards until the first handle is pushed still, at the moment, the injection tube is completely pushed out, and the function of injection under mucosa can be finished; after the injection function is accomplished, draw first handle backward to end, injection tube, honeycomb duct and syringe needle backward movement simultaneously, until the syringe needle retracts the sheath pipe completely, conveyer belt A section on the conveyer belt drives the electrode tube forward motion, and the electrode tube promotes the cutting knife and stretches out the sheath pipe front end, can accomplish the cutting function after the circular telegram. In addition, when first handle was in the intermediate position, syringe needle and cutting knife all were in the sheath intraductal, and at this moment, this transmission structure can pass in and out the clamping-channel safely. The structure realizes the reverse movement of each functional part between the liquid injection function and the electric cutting function through the linkage of the transmission assembly, thereby completely eliminating the accidental starting of the standby function at first and avoiding the accidental injury to patients or the interference to the operation process; secondly, the movement of the functional component can be realized to simultaneously control the movement of the dual-function component, thereby reducing unnecessary actions in the operation of doctors and improving the operation efficiency.

Preferably, the conveyor belt A section is fixedly connected with the electrode tube through a first fixing block, and the conveyor belt B section is fixedly connected with the injection tube through a second fixing block.

Preferably, the transmission member is a guide post fixed in the second handle or a guide wheel rotatably arranged in the second handle.

Preferably, the guide post is integrally formed with the second handle. The guide post and the second handle are integrally formed, and the processing and the assembly are easy.

Preferably, the outer diameter of the drive member adjacent the front of the handle portion is smaller than the outer diameter of the drive member adjacent the rear of the handle portion. The external diameter of the transmission part close to the front of the handle part is smaller, so that the size of the transmission structure close to the front part can be reduced, and the operation is convenient.

Preferably, the injection tube and the electrode tube are slidably disposed in the second handle by means of a guide rail or a guide groove. The injection tube and the electrode tube are constrained in the second handle by means of a guide rail or a guide groove.

Preferably, the injection pipe, the second fixing block and the conveyor belt are connected in a glue bonding, hot melting or mechanical fixing mode; the electrode tube, the first fixing block and the conveyor belt are connected in a glue bonding, hot melting or mechanical fixing mode.

Preferably, the second handle comprises a handle main body and a handle side cover, an end cap is arranged at the front end of the handle side cover, the end cap is connected with the handle side cover through clamping, interference fit or threads, the handle main body is fixed at the rear end of the handle side cover, the rear end of the handle main body is connected with the first handle plug bush in a sliding mode, an injection connector is arranged on the first handle, and the transmission assembly is arranged in the handle side cover.

Preferably, the cutting knife and the injection needle are arranged at the front end of the sheath in parallel.

Preferably, the injection needle penetrates the cutting knife.

To sum up, the utility model discloses following beneficial effect has: the structure realizes the reverse movement of each functional part between the liquid injection function and the electric cutting function through the linkage of the transmission assembly, thereby completely eliminating the accidental starting of the standby function at first and avoiding the accidental injury to patients or the interference to the operation process; secondly, the movement of the functional component can be realized to simultaneously control the movement of the dual-function component, thereby reducing unnecessary actions in the operation of doctors and improving the operation efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the present invention;

FIG. 3 is a schematic cross-sectional view of the needle and cutting knife assembly of the present invention;

FIG. 4 is a schematic cross-sectional view of another assembly method of the injection needle and the cutting knife according to the present invention;

fig. 5 is a schematic view of a partial cross-sectional structure of a handle side cover according to the present invention.

Reference numerals: 1. a sheath tube; 2. a cutting knife; 3. an injection needle; 4. a first handle; 5. an injection tube; 6. an electrode tube; 7. a head end cap; 8. a handle body; 9. a handle side cover; 10. an end cap; 11. an electrode; 12. a transmission member; 13. a conveyor belt A section; 14. a conveyor belt B section; 15. a first fixed block; 16. and a second fixed block.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The embodiment discloses a transmission structure of an endoscope instrument, which comprises a handle part, a sheath tube 1, a guide tube, a traction wire, a cutting knife 2 and an injection needle 3, as shown in fig. 1 to 3; the handle portion comprises a first handle 4, a second handle, an injection tube 5 and an electrode tube 6.

The front end of sheath pipe 1 is fixed with head end cap 7, and the rear end and the second handle fixed connection of sheath pipe 1 run through in the sheath pipe 1 through there being honeycomb duct and traction wire, and sheath pipe 1 uses insulating macromolecular material to make, also can use multiple material to constitute and form insulating effect.

The front end of the traction wire is fixed with a cutting knife 2, the rear end of the traction wire is connected with an electrode tube 6 in a second handle, and the cutting knife 2 is driven to extend out and retract from a head end cap 7 by moving the electrode tube 6 back and forth; the front end of the flow guide pipe is fixedly provided with an injection needle 3, the rear end of the flow guide pipe is connected with an injection tube 5 in the second handle, and the injection tube 5 is moved back and forth to drive the injection needle 3 to extend out of and retract back from the head end cap 7; as shown in fig. 3 and 4, the cutting blade 2 and the injection needle 3 are arranged side by side at the front end of the sheath 1, or the injection needle 3 penetrates the cutting blade 2.

First handle 4 and second handle sliding connection, the second handle includes handle main part 8 and handle side cap 9, the front end of handle side cap 9 sets up end cap 10, through joint, interference fit or threaded connection between end cap 10 and the handle side cap 9, end cap 10 and 1 fixed connection of sheath pipe, handle main part 8 is fixed to the rear end of handle side cap 9, the rear end and the 4 plug bush sliding connection of first handle of handle main part 8, be equipped with the injection on the first handle 4 and connect, the injection connects for luer connects. An electrode 11 is fixed on the end cap 10, the electrode tube 6 and/or the traction wire penetrate through the end cap 10, and the electrode 11 is in contact with the electrode tube 6 and/or the traction wire through a brush for conducting electricity. The cutting knife 2 is connected with an electrode 11 of a second handle through a traction wire, and the cutting knife 2 can be electrified by connecting high-frequency electricity to the electrode 11, so that pathological changes can be cut off through high-frequency cutting in operation.

Set up in the handle side cap 9 of second handle and can carry out the electrode tube 6 and the injection syringe 5 of back-and-forth movement, injection syringe 5 and electrode tube 6 slide the setting in the second handle through the mode of guide rail or guide slot, injection syringe 5 runs through the second handle and with first handle 4 fixed connection, thereby first handle 4 carries out the back-and-forth movement and drives injection syringe 5 and honeycomb duct seesaw, the honeycomb duct drives injection syringe 3 and stretches out and withdraw from end cap 7, first handle 4 rear end is equipped with the injection joint, be connected to the injection joint with the syringe, carry the honeycomb duct with liquid through injection syringe 5, rethread removes first handle 4 drive injection syringe 3 back-and-forth movement, can carry out the injection of liquid such as normal saline clinically, hemostatic agent. In this way, the electrode 11 is fixed on the end cap 10 at the front end of the handle part, meanwhile, the injection port of the injection tube 5 is arranged at the rear end of the handle part, and the driven part injection tube 5 and the electrode tube 6 have no load caused by other connection, so that the part held when the instrument is used can be sufficiently avoided, the interference to an operator is reduced, the movement load of the instrument mechanism is reduced, and the difficulty in process realization and the additional requirements on material strength are reduced.

As shown in fig. 1 to 3, the electrode tube 6 is in transmission connection with the injection tube 5 through a transmission assembly, the injection tube 5 moves forwards or backwards, and the electrode tube 6 is driven by the transmission assembly to move in a direction opposite to the movement direction of the injection tube 5; when the first handle 4 is pushed forwards, the injection tube 5 in the handle side cover 9 is driven to move forwards, and the injection needle 3 is pushed to extend out of the front end of the sheath tube 1 through the guide tube connected with the injection tube 5; simultaneously injection tube 5 orders about 6 pullbacks of electrode tube through drive assembly to through electrode tube 6, traction wire pulling cutting knife 2 backtracking sheath pipe 1 depths, accomplish the injection functional state and ready this moment, the injection of liquids such as normal saline, hemostatic are carried out to injection tube 5 that the accessible first handle 4 is terminal. If the electric cutting function is needed, the corresponding action can be completed by pulling the first handle 4. The reverse movement of each functional part is realized through the linkage of the transmission assembly between the liquid injection function and the electric cutting function, so that the accidental starting of the standby function can be completely eliminated, and the accidental injury to a patient or the interference to the operation process can be avoided; secondly, the movement of the functional component can be realized to simultaneously control the movement of the dual-function component, thereby reducing unnecessary actions in the operation of doctors and improving the operation efficiency.

As shown in fig. 2, 3 and 5, the transmission assembly comprises a plurality of transmission members 12, and at least two transmission members 12 are arranged in the second handle in front of and behind each other, and a transmission belt is wound around the plurality of transmission members 12. Preferably, the transmission assembly includes two transmission members 12, the transmission member 12 is a guide post or a guide wheel rotatably disposed in the second handle, the outer diameter of the transmission member 12 near the front of the handle portion is smaller than the outer diameter of the transmission member 12 near the rear of the handle portion, the outer diameter of the transmission member 12 near the front is smaller, so that the size of the transmission structure near the front can be reduced, the operation is facilitated, and when the transmission member 12 is a guide post, the guide post and the second handle are integrally formed. The conveyer belt includes conveyer belt A section 13 and the conveyer belt B section 14 opposite with conveyer belt A section 13 direction of motion, and conveyer belt A section 13 and electrode tube 6 fixed connection, and conveyer belt B section 14 and injection tube 5 fixed connection make injection tube 5 and electrode tube 6 move to opposite direction through the opposite movement of conveyer belt A section 13 and conveyer belt B section 14. When the first handle 4 is pushed, the injection tube 5 and the conveyor belt B section 14 in the second handle are driven to move forwards, the injection needle 3 is pushed to extend out of the front end of the sheath tube 1 through the guide tube connected with the injection tube 5, meanwhile, the conveyor belt A section 13 on the conveyor belt drives the electrode tube 6 to move backwards until the first handle 4 is pushed still, and at the moment, the injection needle 3 is completely pushed out, so that the submucosal injection function can be completed; after the injection function is accomplished, pull back first handle 4 to end, injection tube 5, honeycomb duct and 3 backward movements of syringe needle simultaneously, until 3 complete withdrawal sheath pipes 1 of syringe needle, conveyer belt A section 13 on the conveyer belt drives electrode tube 6 forward motion, and electrode tube 6 promotes cutting knife 2 and stretches out 1 front end of sheath pipe, can accomplish the cutting function after the circular telegram. In addition, when the first handle 4 is in the middle position, the injection needle 3 and the cutting knife 2 are both in the sheath 1, and at the moment, the transmission structure can safely enter and exit the clamp channel. Preferably, the conveyor belt A section 13 is fixedly connected with the electrode tube 6 through a first fixing block 15, and the conveyor belt B section 14 is fixedly connected with the injection tube 5 through a second fixing block 16.

The injection pipe 5, the second fixing block 16 and the conveyor belt are connected in a glue bonding, hot melting or mechanical fixing mode; the electrode tube 6, the first fixing block 15 and the conveyor belt are connected through glue bonding, hot melting or mechanical fixing.

The directions given in the present embodiment are merely for convenience of describing positional relationships between the respective members and the relationship of fitting with each other. Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A transmission structure of an endoscope apparatus comprises a handle part, a sheath tube (1), a guide tube, a traction wire, a cutting knife (2) and an injection needle (3); the handle part comprises a first handle (4), a second handle, an injection tube (5) and an electrode tube (6);

an electrode tube (6) and an injection tube (5) which can move back and forth are arranged in the second handle, and the injection device is characterized in that: the electrode tube (6) is in transmission connection with the injection tube (5) through a transmission assembly, and the electrode tube (6) is driven to move towards the direction opposite to the movement direction of the injection tube (5) through the transmission assembly when the injection tube (5) moves forwards or backwards;

the transmission assembly comprises a plurality of transmission pieces (12) arranged in the second handle, at least two transmission pieces (12) are arranged in the front and back direction, and a conveyor belt is arranged on the plurality of transmission pieces (12) in a surrounding manner; the conveyer belt includes conveyer belt A section (13) and with conveyer belt A section (13) opposite conveyer belt B section (14) of direction of motion, conveyer belt A section (13) and electrode tube (6) fixed connection, conveyer belt B section (14) and injection tube (5) fixed connection, the opposite movement through conveyer belt A section (13) and conveyer belt B section (14) makes injection tube (5) and electrode tube (6) move to opposite direction.

2. The transmission structure of an endoscopic instrument as defined in claim 1, wherein: the conveying belt A section (13) is fixedly connected with the electrode tube (6) through a first fixing block (15), and the conveying belt B section (14) is fixedly connected with the injection tube (5) through a second fixing block (16).

3. The transmission structure of an endoscopic instrument as defined in claim 1, wherein: the transmission piece (12) is a guide post fixed in the second handle or a guide wheel rotatably arranged in the second handle.

4. The transmission structure of an endoscopic instrument as defined in claim 3, wherein: the guide post and the second handle are integrally formed.

5. The transmission structure of an endoscopic instrument as defined in claim 1, wherein: the outside diameter of the drive member near the front of the handle portion is smaller than the outside diameter of the drive member near the rear of the handle portion.

6. The transmission structure of an endoscopic instrument as defined in claim 1, wherein: the injection tube (5) and the electrode tube (6) are arranged in the second handle in a sliding mode through a guide rail or a guide groove.

7. The transmission structure of an endoscopic instrument as defined in claim 2, wherein: the injection pipe (5), the second fixing block (16) and the conveyor belt are connected in a glue bonding, hot melting or mechanical fixing mode; the electrode tube (6), the first fixing block (15) and the conveyor belt are connected in a glue bonding, hot melting or mechanical fixing mode.

8. The transmission structure of an endoscopic instrument as defined in claim 1, wherein: the second handle includes handle main part (8) and handle side cap (9), and the front end of handle side cap (9) sets up end cap (10), end cap (10) with through joint, interference fit or threaded connection between handle side cap (9), the fixed handle main part (8) of rear end of handle side cap (9), the rear end and the plug bush sliding connection of first handle (4) of handle main part (8), be equipped with the injection on first handle (4) and connect, drive assembly sets up in handle side cap (9).

9. The transmission structure of an endoscopic instrument as defined in claim 1, wherein: the cutting knife (2) and the injection needle (3) are arranged at the front end of the sheath tube (1) in parallel.

10. The transmission structure of an endoscopic instrument as defined in claim 1, wherein: the injection needle (3) penetrates through the cutting knife (2).

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