CN220876892U

CN220876892U - Endoscope imaging catheter

Info

Publication number: CN220876892U
Application number: CN202322052915.4U
Authority: CN
Inventors: 骆志祥; 顾晴康; 华嘉伦; 韦正堂; 印帅
Original assignee: Hunan Weidekang Medical Technology Co ltd
Current assignee: Hunan Weidekang Medical Technology Co ltd
Priority date: 2023-08-01
Filing date: 2023-08-01
Publication date: 2024-05-03
Anticipated expiration: 2033-08-01

Abstract

The utility model provides an endoscope imaging catheter which is used in combination with an endoscope, the endoscope imaging catheter comprises an insertion tube and an operating handle, the operating handle is respectively provided with a clamp hole, a first liquid injection hole and a second liquid injection hole, a Y-shaped connecting tube is arranged in an inner cavity of the operating handle, a first branch pipeline of the Y-shaped connecting tube is communicated with the first liquid injection catheter pipeline, a second branch pipeline is communicated with the second liquid injection hole pipeline, and a third branch pipeline is communicated with a liquid outlet pipeline. The utility model has reasonable and effective structural design, the additional second liquid injection guide pipe is added on the operating handle, the second liquid injection guide pipe and the inherent forceps channel hole are mutually independent, the second liquid injection guide pipe can be used as a liquid injection pipe, and can also be used as a guide wire channel, and the guide wire channel of the endoscope imaging guide pipe and the forceps channel of the instrument forceps channel are mutually noninterfere, thereby being convenient for improving the operation efficiency and reducing the operation time of operators.

Description

Endoscope imaging catheter

Technical Field

The utility model relates to the technical field of endoscope equipment, in particular to an endoscope imaging catheter.

Background

The endoscope can be sent into the cavity of the human body, and can be visually inspected and treated under the action of the optical system. The choledochoscope is a branch type of an endoscope, and may also be referred to as an endoscope imaging catheter, and generally includes an operation handle and an insertion tube extending outward from the operation handle, and when the choledochoscope is used in combination with an endoscope, the insertion tube of the choledochoscope is usually inserted through a forceps channel hole of the endoscope to reach a target lesion position along with a lens of the endoscope.

In the prior art, the choledochoscope has only 1 forceps hole, only one minimally invasive surgical instrument, such as an ultrafine stone removing basket or an ultrafine guide wire, can be used each time, the choledochoscope is matched with an endoscope such as a duodenoscope, when the duodenoscope or the choledochoscope finds that stones exist in the biliary tract, the stone removing operation needs to be carried out firstly, the guide wire is arranged on the forceps of the choledochoscope firstly, the choledochoscope passes through the stones, a channel is established, the guide wire is withdrawn, then the stone removing basket is arranged in a penetrating mode, stones are removed one by one, thus instrument switching is involved, the operation time is long, a patient needs to wait for longer time, and the energy of an operator is consumed.

Meanwhile, the choledochoscope is provided with only 1 liquid injection port, the liquid injection port is generally positioned at the lower side of the handle, and the liquid injection port is correspondingly connected with the first liquid injection catheter in a U shape. If the guide wire is penetrated through the liquid injection port, the guide wire enters the first liquid injection guide pipe, and turns 180 degrees along with the shape of the first liquid injection guide pipe in the handle, so that the guide wire is easy to bend, and the situation that the actions of the end of the guide wire and the tail end of the guide wire are asynchronous easily occurs.

Therefore, how to further design the choledochoscope on the basis of the prior art is worth that the choledochoscope can be effectively and reliably led into the guide wire, and other minimally invasive instruments are arranged in the choledochoscope sign-in control in a penetrating manner, so that the choledochoscope sign-in control is an important point of the current improved design.

Disclosure of utility model

The utility model aims to solve the technical problems that: in order to overcome the defects in the prior art, the utility model provides the endoscope imaging catheter, which can reasonably design the distribution of the first liquid injection port, the forceps channel hole and the inlet of the guide wire on an endoscope, can easily establish a reliable guide wire channel, and the guide wire channel and the forceps channel of an instrument are not interfered with each other, thereby being convenient for improving the operation efficiency and reducing the operation time of operators.

The technical scheme adopted for solving the technical problems is as follows: the endoscope imaging catheter is used in combination with an endoscope, and comprises an insertion tube and an operating handle connected to the rear end of the insertion tube, wherein a forceps channel hole and a first liquid injection hole are formed in the operating handle respectively, a first liquid injection catheter is arranged in an inner cavity of the operating handle, a liquid outlet tube is arranged in the insertion tube, the first liquid injection hole is communicated with a liquid outlet tube through the first liquid injection catheter, and the first liquid injection catheter is U-shaped. The endoscope imaging catheter comprises a second liquid injection hole which is formed in the operating handle and communicated with the liquid outlet pipe; the Y-shaped connecting pipe is arranged in the inner cavity of the operating handle and is provided with three branch pipelines, namely a first branch pipeline, a second branch pipeline and a third branch pipeline, wherein the first branch pipeline is communicated with the first liquid injection guide pipe pipeline, the second branch pipeline is communicated with the second liquid injection hole pipeline, and the third branch pipeline is communicated with the liquid outlet pipeline.

In the above scheme, through the cooperation design of second notes liquid hole and Y type connecting pipe for integrated endoscopic imaging pipe that can supply the seal wire to let in on the choledochoscope, second notes liquid hole cooperation second branch pipeline both can regard as annotating the liquid pipeline to use, still can regard as the seal wire passageway if necessary for let in the seal wire, let in the seal wire simultaneously need not to go out the buckling at the first notes liquid pipe of the U-shaped of first notes liquid mouth, seal wire lets in the process smoothly and reliably.

Further, in the Y-shaped connecting pipe, the second branch pipe and the third branch pipe form an angle ranging from 90 ° to 180 °.

Furthermore, the operating handle is provided with a steering mechanism, and the direction of the front end of the insertion tube of the endoscope imaging catheter is controlled by the steering mechanism.

Further, the steering mechanism comprises a pair of traction wire driving wheels, the pair of traction wire driving wheels comprises a first driving wheel and a second driving wheel, the steering mechanism further comprises two groups of traction wires, the two groups of traction wires are respectively arranged on the first driving wheel and the second driving wheel, the rotation between the first driving wheel and the second driving wheel is independent, and the other ends of the two groups of traction wires are connected with the distal end of the insertion tube to drive the distal end of the insertion tube to adjust the direction under the action of the traction wire driving wheels.

Further, the steering lock button is arranged on the operating handle, the steering lock button is arranged on one side of the second liquid injection hole, the damping seat is arranged in the operating handle, and the damping seat is arranged below the steering lock button and is used for controlling the locking of the traction wire driving wheel through the damping seat. The steering locking button is rotated to drive the threaded rotating shaft to rotate, the threaded rotating shaft drives the damping seat to do lifting motion relative to the threaded hole under the cooperation of the threaded hole, and when the damping seat descends, the damping seat is in pressure connection with the traction wire driving wheel to realize positioning and locking of the steering wheel.

Further, a threaded rotating shaft is arranged in the steering locking button, a threaded hole matched with the threaded rotating shaft is formed in the operating handle, the damping seat is arranged at the lower end of the threaded rotating shaft, and the damping seat is abutted to the periphery of the traction wire rotating wheel under the control of the threaded rotating shaft.

Further, a steering wheel coaxially connected with the traction wire driving wheel is further arranged on the operating handle, the steering wheel comprises a pair of coarse adjustment gears coaxially arranged, one coarse adjustment gear corresponds to the first driving wheel and guides to drive, and the other coarse adjustment gear corresponds to the second driving wheel and guides to drive.

Further, the axial direction of the threaded rotating shaft is perpendicular to the axial direction of the steering wheel.

Further, the second liquid injection guide pipe is inserted into the position of the operating handle corresponding to the second liquid injection hole, the hole of the second liquid injection guide pipe at the outer end part of the operating handle is the second liquid injection hole, the hole of the operating handle inner cavity is communicated with the second branch pipeline, and when the second liquid injection guide pipe is used as a guide wire channel, the guide wire is inserted from the second liquid injection hole and enters the liquid outlet pipe through the second liquid injection guide pipe and the second branch pipeline.

In order to better support the second liquid injection guide pipe, the cavity wall of the inner cavity of the operating handle is convexly provided with a supporting buckle, and the outer wall of the second liquid injection guide pipe is provided with a matching bayonet matched with the supporting buckle. When the choledochoscope is assembled, the second liquid injection guide pipe is in supporting and buckling cooperation at the position of the matched bayonet, the supporting and buckling provides positioning and supporting functions, the second liquid injection guide pipe is prevented from shaking in the inner cavity of the operating handle, and the reliability of the guide wire is further guaranteed.

The endoscope imaging catheter has the beneficial effects that the structural design is reasonable and effective, the additional second liquid injection catheter is added on the operating handle, and the second liquid injection catheter and the inherent forceps channel hole are mutually independent, can be used as a liquid injection catheter or a guide wire channel and are finally communicated with a liquid outlet at the front end of the insertion tube of the endoscope imaging catheter. When stones are found, the guide wire can penetrate through the guide wire channel formed by the second liquid injection catheter to dredge the stones and establish the channel, and the superfine stone-taking basket can enter the established channel through the forceps channel holes to clear and treat the stones, so that surgical instruments do not need to be switched, and the operation time of operators is shortened.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a schematic view of the structure of the present utility model (not shown in the insertion tube drawing).

Fig. 2 is a cross-sectional view of F-F in fig. 1.

Fig. 3 is a schematic view of another aspect of the present utility model.

Fig. 4 is a schematic view of the structure of the present utility model at the position of the Y-shaped connection pipe.

In the figure, 1, an operating handle 2, a clamp hole 3, a first liquid injection hole 4, a first liquid injection guide pipe 5, a liquid outlet pipe 6, a second liquid injection hole 7, a second liquid injection guide pipe 8, a first branch pipeline 9, a second branch pipeline 10, a third branch pipeline 11, a support bayonet 12, a matched bayonet 13 guide wire 14, an annular notch 15, a steering lock button 16, a traction wire rotating wheel 17, a steering wheel 18, a damping seat 19, a threaded rotating shaft 20 and a rough adjusting gear.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only those features which are relevant to the utility model, and orientation and reference (e.g., up, down, left, right, etc.) may be used solely to aid in the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

Embodiment one:

An endoscopic imaging catheter as shown in fig. 1 to 4 is a first embodiment of the present utility model.

The endoscopic imaging catheter is used in conjunction with an endoscope, such as an enteroscope, gastroscope, duodenoscope, etc., and in this embodiment, the endoscopic imaging catheter may also be referred to as a choledochoscope. The endoscope imaging catheter comprises an insertion tube and an operating handle 1, wherein the operating handle 1 is connected to the rear end of the insertion tube. A liquid outlet pipe 5 is arranged in the insertion pipe, and the tail end of the liquid outlet pipe 5 enters the inner cavity of the operating handle 1. The endoscope imaging catheter further comprises a branch pipeline, namely a second branch pipeline 9, which is communicated with the corresponding pipeline of the second liquid injection hole 6 and the second liquid injection hole 6. It will be appreciated that in this embodiment, the insertion tube may be a multi-lumen tube, i.e. the same tube, and a plurality of mutually independent lumens are provided, and different lumens correspond to different functions, for example, the liquid outlet tube 5 may be one of the lumens, and the forceps hole of the choledochoscope may be communicated with another tube to form an instrument channel, and similarly, reference may be made to the schemes disclosed in CN202022773375.5 and CN202020258458.8 regarding the lumens.

The operating handle 1 is respectively provided with a clamp hole 2, a first liquid injection hole 3 and a second liquid injection hole 6. The inner cavity of the operating handle 1 is provided with a first liquid injection guide pipe 4, and the first liquid injection hole 3 is communicated with a liquid outlet pipe 5 through the first liquid injection guide pipe 4. In practical design, the first liquid injection conduit 4 is in a U shape, and the liquid introduced into the first liquid injection conduit 4 flows along with the U-shaped conduit structure and then enters the liquid outlet pipe 5. The operating handle 1 is provided with a second liquid injection hole 6, and the second liquid injection hole 6 is also communicated with the liquid outlet pipe 5 through a pipeline. The first liquid injection conduit 4 and the second liquid injection hole 6 are independent from each other and are not communicated. Specifically, the liquid outlet pipe 5 has two liquid outlets, one of which communicates with the first liquid injection pipe 4, and the other of which communicates with the second liquid injection hole 6.

In this embodiment, the pipeline communication and isolation between the first liquid injection hole 3, the second liquid injection hole 6 and the liquid outlet pipe 5 are realized by a Y-shaped connecting pipe. Specifically, the Y-shaped connecting pipe is arranged in the inner cavity of the operating handle 1. The Y-shaped connecting pipe is provided with three branch pipelines, namely a first branch pipeline 8, a second branch pipeline 9 and a third branch pipeline 10, wherein the first branch pipeline 8 is in pipeline communication with the first liquid injection guide pipe 4, the second branch pipeline 9 is in pipeline communication with the second liquid injection hole 6, and the third branch pipeline 10 is in pipeline communication with the liquid outlet pipe 5. Specifically, the position of the operating handle 1 corresponding to the second liquid injection hole 6 is inserted with a second liquid injection guide pipe 7, the hole of the second liquid injection guide pipe 7 at the outer end part of the operating handle 1 is the second liquid injection hole 6, the hole of the inner cavity of the operating handle 1 is communicated with the second branch pipeline 9, and when the second liquid injection guide pipe 7 is used as a guide wire 13 channel, the guide wire 13 is inserted from the second liquid injection hole 6 and enters the liquid outlet pipe 5 through the second liquid injection guide pipe 7 and the second branch pipeline 9.

When the guide wire 13 needs to be introduced, the guide wire 13 can enter the second liquid injection guide pipe 7 through the second liquid injection hole 6 and then enter the second branch pipeline 9, and then is introduced into the liquid outlet pipe 5 along the third branch pipeline 10, and finally is communicated with the liquid outlet of the insertion pipe of the choledochoscope. Because the angle range formed by the second branch pipeline 9 and the third branch pipeline 10 is between 90 degrees and 180 degrees, when the guide wire 13 enters from the second liquid injection hole 6 to the liquid outlet pipe 5, the U-shaped first liquid injection guide pipe 4 of the first liquid injection port is not required to be bent, and the guide wire 13 is smoothly and reliably introduced.

In the present embodiment, the angle between the second branch pipe 9 and the third branch pipe 10 in the Y-shaped connecting pipe is between 90 ° and 180 °.

Specifically, the operating handle 1 is provided with a steering mechanism and a steering lock button 15, and the steering lock button 15 is adjacently arranged at one side of the second liquid injection hole 6. Specifically, the steering mechanism comprises a pair of traction wire driving wheels, a pair of steering wheels and two groups of traction wires. The traction wire driving wheel comprises a first driving wheel 16 and a second driving wheel 17, the traction wire driving wheel and the steering wheel are coaxial and are oppositely spliced, two groups of traction wires are respectively arranged on the first driving wheel 16 and the second driving wheel 17, the rotation between the two driving wheels is mutually independent, and the other end of the traction wire is connected with the end part of the endoscope imaging catheter, so that the adjustment of the direction of the end part of the endoscope imaging catheter can be realized. In this embodiment, the steering wheel includes a pair of coarse adjustment gears 20 coaxially disposed, each coarse adjustment gear 20 is fixedly connected with one of the traction wire driving wheels, and rotating one of the coarse adjustment gears 20 can drive the traction wire driving wheel fixedly connected with the coarse adjustment gear to rotate, so that the traction wire connected to the traction wire driving wheel is caused to advance or retreat, and the end of the endoscope imaging catheter is turned in a designated direction.

The position locking of the steering wheel is controlled by a steering lock button 15. A threaded rotating shaft 19 is arranged in the steering locking button 15, and the axial direction of the threaded rotating shaft 19 is perpendicular to the axial direction of the special steering wheel. The operating handle 1 is provided with a threaded hole matched with a threaded rotating shaft 19, and the lower end of the threaded rotating shaft 19 is provided with a damping seat 18. The damping seat 18 abuts against the outer periphery of the traction wire driving wheel under the control of the threaded rotating shaft 19, so that the rotation of the traction wire driving wheel is hindered. Damping mount 18 may be, but is not limited to, a silicone rubber ring. In use, the steering wheel is locked and unlocked by adjusting the steering locking button 15, and in the unlocked state, the steering wheel rotates to enable the end part of the endoscope imaging catheter, namely the distal end position of the insertion tube of the application, to be adjusted in four directions, so that the end part is conveniently placed in a position which is favorable for operation.

In this embodiment, the second infusion catheter 7 is independent of the native forceps channel hole 2, and at the same time, the second infusion catheter 7 is used as both an infusion tube and a guidewire channel. Through the cooperation of the second liquid injection hole 6, the second liquid injection guide pipe 7, the Y-shaped connecting pipe and the liquid outlet pipe 5, a penetrating channel of the guide wire 13 is effectively formed, and finally the penetrating channel is communicated with one liquid outlet of the liquid outlet pipe 5, so that the guide wire 13 can be penetrated in an operating mode. When stones are found, the guide wire 13 can enter from the second liquid injection hole 6, the guide wire penetrating channel formed by the second liquid injection guide pipe 7 is used for dredging stones and establishing channels, the superfine stone-taking basket can enter the channel established by the guide wire 13 through the forceps channel hole 2 for removing and treating stones, and surgical instruments do not need to be switched on the forceps channel hole 2, so that the operation time of operators is shortened.

Embodiment two:

An endoscopic imaging catheter, as shown in fig. 2 and 4, is a second embodiment of the present utility model. In the second embodiment, the second injection pipe 7 is further positioned and supported based on the first embodiment.

Specifically, the cavity wall of the inner cavity of the operating handle 1 is provided with a supporting buckle 11 in a protruding mode, and the outer wall of the second liquid injection catheter 7 is provided with a matching bayonet 12 matched with the supporting buckle 11. When the choledochoscope is assembled, the second liquid injection guide tube 7 is matched with the supporting buckle 11 at the position of the matched bayonet 12, the supporting buckle 11 provides positioning and supporting functions, the second liquid injection guide tube 7 is prevented from shaking in the inner cavity of the operating handle 1, and the reliability of the introduction of the guide wire 13 is further guaranteed.

Meanwhile, the second liquid injection guide pipe 7 is also provided with an annular notch 14 at a position corresponding to the matched connection with the operating handle 1, and is used for being installed in a matched mode of being clamped with the shell of the operating handle 1 in an annular mode.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. An endoscopic imaging catheter for use with an endoscope, the endoscopic imaging catheter characterized by: the endoscope imaging catheter include the inserted tube and connect operating handle (1) at the inserted tube rear end, operating handle (1) on be equipped with pincers way hole (2) and first notes liquid hole (3) respectively, operating handle (1) intracavity has first notes liquid pipe (4), the inserted tube in be equipped with drain pipe (5), first notes liquid hole (3) through first notes liquid pipe (4) and drain pipe (5) pipeline intercommunication, first notes liquid pipe (4) be U type, its characterized in that: the liquid injection device comprises a second liquid injection hole (6), wherein the second liquid injection hole (6) is formed in an operating handle (1), and the second liquid injection hole (6) is communicated with a liquid outlet pipe (5) through a pipeline;

The Y-shaped connecting pipe is arranged in the inner cavity of the operating handle (1), and is provided with three branch pipelines, namely a first branch pipeline (8), a second branch pipeline (9) and a third branch pipeline (10), wherein the first branch pipeline (8) is communicated with a first liquid injection guide pipe (4) pipeline, the second branch pipeline (9) is communicated with a second liquid injection hole (6) pipeline, and the third branch pipeline (10) is communicated with a liquid outlet pipe (5) pipeline.

2. The endoscopic imaging catheter according to claim 1, wherein: in the Y-shaped connecting pipe, the angle range between the second branch pipeline (9) and the third branch pipeline (10) is between 90 degrees and 180 degrees.

3. The endoscopic imaging catheter of claim 2, wherein: the operating handle (1) is provided with a steering mechanism, and the direction of the front end of the insertion tube of the endoscope imaging catheter is controlled by the steering mechanism.

4. An endoscopic imaging catheter according to claim 3, wherein: the steering mechanism comprises a pair of traction wire driving wheels, the pair of traction wire driving wheels comprises a first driving wheel (16) and a second driving wheel (17), the steering mechanism further comprises two groups of traction wires, the two groups of traction wires are respectively arranged on the first driving wheel (16) and the second driving wheel (17), the rotation between the first driving wheel (16) and the second driving wheel (17) is independent, and the other ends of the two groups of traction wires are connected with the distal end of the insertion tube to drive the distal end of the insertion tube to adjust the direction under the action of the traction wire driving wheels.

5. The endoscopic imaging catheter according to claim 4, wherein: the steering handle (1) on be equipped with steering lock button (15), steering lock button (15) set up in second annotate liquid hole (6) one side, operating handle (1) in be equipped with damping seat (18), damping seat (18) set up in steering lock button (15) below to by steering lock button (15) through the locking of damping seat (18) control traction wire drive wheel.

6. The endoscopic imaging catheter according to claim 5, wherein: the steering locking button (15) is internally provided with a threaded rotating shaft (19), the operating handle (1) is provided with a threaded hole matched with the threaded rotating shaft (19), the damping seat (18) is arranged at the lower end of the threaded rotating shaft (19), and the damping seat (18) is abutted to the periphery of the traction wire rotating wheel under the control of the threaded rotating shaft (19).

7. The endoscopic imaging catheter according to claim 6, wherein: the steering handle (1) is provided with a steering wheel coaxially connected with a traction wire driving wheel, the steering wheel comprises a pair of coaxially arranged rough adjusting gears (20), one rough adjusting gear (20) corresponds to the first driving wheel (16) and guides and drives, and the other rough adjusting gear (20) corresponds to the second driving wheel (17) and guides and drives.

8. The endoscopic imaging catheter according to claim 6, wherein: the axial direction of the threaded rotating shaft (19) is perpendicular to the axial direction of the steering wheel.

9. The endoscopic imaging catheter according to claim 1, wherein: the operation handle (1) correspond second annotate liquid hole (6) position department peg graft have second annotate liquid pipe (7), the hole that second annotate liquid pipe (7) are located operation handle (1) outside tip is second annotate liquid hole (6), the hole that is located operation handle (1) inner chamber then with second branch pipeline (9) intercommunication, second annotate liquid pipe (7) when guide wire (13) passageway, guide wire (13) insert from second annotate liquid hole (6) and pass through second annotate liquid pipe (7), second branch pipeline (9) entering drain pipe (5).

10. The endoscopic imaging catheter according to claim 9, wherein: the inner cavity wall of the inner cavity of the operating handle (1) is provided with a supporting buckle (11) in a protruding mode, and the outer wall of the second liquid injection catheter (7) is provided with a matching bayonet (12) matched with the supporting buckle (11).