CN217118389U

CN217118389U - Reusable endoscope guider

Info

Publication number: CN217118389U
Application number: CN202123234642.2U
Authority: CN
Inventors: 景治安; 胡学成; 刘威; 毛业云; 龙刚; 颜雪辉; 吴淑香; 李莹; 张园; 李文; 张友林; 张承广; 李金平
Original assignee: Wuhan Youcare Technology Co ltd
Current assignee: Wuhan Youcare Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-08-05
Anticipated expiration: 2031-12-21

Abstract

The invention discloses a reusable endoscope guider, which comprises an operating handle, wherein an instrument joint, a perfusion joint and an endoscope joint are arranged on the operating handle; an outer sheath tube is coaxially and detachably fixed at the rear end of the operating handle, an extension connecting tube which is coaxially sealed and detachably fixed with the first guide tube at the front end is inserted into the outer sheath tube, a gap exists between the outer wall of the extension connecting tube and the inner wall of the outer sheath tube, and the outer sheath tube is connected with a negative pressure suction joint for sucking back perfusion fluid in the outer sheath tube. The endoscope guide has various functions and can meet various treatment requirements, and meanwhile, the endoscope guide can be divided into an operating handle, an outer sheath tube structure and a connecting tube structure to meet the cleaning requirement of the endoscope guide, so that the endoscope guide designed by the invention has the function of repeated use, and the cost is effectively reduced.

Description

Reusable endoscope guider

Technical Field

The invention relates to the technical field of urological treatment equipment, in particular to a reusable endoscope guider.

Background

Urinary calculus is a common and frequently encountered disease in urinary surgery, and is the first place among hospitalized patients in urinary surgery. The rigid ureteroscope plays an important role in diagnosing and treating urinary system stones, is in the primary position in treating stones in the middle and lower segments of ureters, has the advantages of small wound, quick recovery, exact effect, good economy and the like, and is widely applied to the treatment of urinary surgery. The existing hard ureteroscope generally comprises an insertion tube, a light guide fiber bundle, a light guide pixel, a scope body (operation part), an instrument channel and a perfusion channel. The hard ureteroscope can directly enter a ureter through a urethra to observe the pathological changes of the ureter in clinical use, and can utilize an instrument channel to introduce instruments to perform operations such as stone breaking and stone extraction in a continuous perfusion state. However, the hard ureteroscope also has the following disadvantages:

1. only one instrument channel of the ureteroscope is used for holmium laser and perfusate to enter, the perfusate cannot be discharged out of the body in time in the operation process, so that the pressure defect of the inner wall of the ureter causes postoperative stenosis, and the intrarenal pressure is too high to cause complications such as infection and the like;

2. heat generated by holmium laser cannot be taken away in time in the process of lithotripsy, so that the local temperature in the ureter is too high to cause ureter stenosis;

3. the residual stones rush to the places where the ureteroscope can not reach due to the fact that stones can not be cleared while the stones are crushed, and other instruments or operations are needed to be performed at a certain time.

Disclosure of Invention

The present invention is to solve the above-mentioned drawbacks of the background art, and provide a reusable endoscope guide device which can drain liquid and remove heat in time, and has multiple instrument channels to meet the requirements of urological surgery.

In order to achieve the purpose, the reusable endoscope guider comprises an operation handle, wherein an instrument joint, a perfusion joint and an endoscope joint are arranged on the operation handle, and a first guide pipe communicated with the instrument joint, the perfusion joint and the endoscope joint is fixed in the operation handle along the axial direction of the operation handle; the method is characterized in that: the back end of the operating handle is coaxially detachably fixed with an outer sheath tube, an extension connecting tube is inserted into the outer sheath tube, the front end of the extension connecting tube is coaxially sealed with the first guide tube, the extension connecting tube is detachably fixed, a gap is reserved between the outer wall of the extension connecting tube and the inner wall of the outer sheath tube, and the outer sheath tube is connected with a negative pressure suction joint used for sucking back perfusion fluid in the outer sheath tube. The rear end of the extension connecting pipe is flush with the rear end of the outer sheath pipe or the rear end of the extension connecting pipe is positioned in the outer sheath pipe and close to the rear end face of the outer sheath pipe, so that the observation of the endoscope and the operation of holmium laser are facilitated.

Furthermore, a standby joint is arranged on the operating handle, a second guide pipe communicated with the standby joint is fixed in the operating handle along the axial direction of the operating handle, and the sum of the outer diameter of the extension connecting pipe and the outer diameter of the second guide pipe is smaller than the inner diameter of the outer sheath pipe.

Furthermore, a backflow hole is formed in the side wall of the front end of the outer sheath tube, and a pressure reducing hole is formed in the side wall, opposite to the backflow hole, of the outer sheath tube.

Furthermore, the rear end of the operating handle is coaxially and rotatably connected with a locking cap, the front end of the outer sheath tube is coaxially fixed in the sheath tube seat, and the sheath tube seat is detachably fixed in the locking cap.

Furthermore, the locking cap comprises a cap body with an internal thread and a cylindrical shape and a positioning ring which is coaxially and fixedly connected with the front end face of the cap body and is integrated with the cap body into a whole, a positioning groove matched with the positioning ring is formed in the rear end of the operating handle, the inner side portion of the positioning ring is arranged in the positioning groove, and an external thread matched with the internal thread of the cap body is arranged on the surface of the front end of the sheath tube seat.

Furthermore, the negative pressure suction connector is fixed on the sheath tube seat, and the sheath tube seat is also provided with a pressure control structure for controlling the reflux rate of the negative pressure suction connector.

Furthermore, the pressure control structure comprises a pressure control hole arranged on the surface of the sheath tube seat

Furthermore, an operation groove convenient for a human hand to press is arranged around the pressure control hole.

Furthermore, a connecting seat is coaxially fixed at the front end of the extension connecting pipe, the connecting seat is coaxially arranged in the sheath pipe seat, a sealing block is fixed in the connecting seat, the butt joint position of the first guide pipe and the extension connecting pipe is located in the sealing block, and the second guide pipe penetrates through the sealing block and is located in the sheath pipe seat.

Furthermore, the inner wall of the sheath tube seat is provided with a limiting boss which is attached to the rear end face of the connecting seat and limits the rear end position of the connecting seat, the front end face of the sheath tube seat is attached to the rear end face of the operating handle and is detachably fixed, and the front end face of the sealing block is closely attached to the rear end face of the operating handle.

The invention has the beneficial effects that: an optical fiber uretero-nephroscope is inserted through an endoscope connector to observe a diseased region, holmium laser is inserted through an instrument connector to complete the lithotripsy operation, and meanwhile, perfusate is introduced through a perfusion connector and used in cooperation with negative pressure suction, so that the function of taking away heat and lithotripsy generated by the holmium laser in the operation is realized. On the basis of the joint function, the function of sheathing along the guide wire can be realized by leading the standby joint into the guide wire guide pipe, and after sheathing is finished, the standby joint can also be used as a second instrument joint to lead other instruments to assist in finishing treatment. The endoscope guider designed by the invention has multiple functions and can meet various treatment requirements, and meanwhile, the endoscope guider can be divided into the operating handle, the outer sheath tube structure and the connecting tube structure to meet the cleaning requirement of the endoscope guider, so that the endoscope guider designed by the invention has the function of repeated use, and the cost is effectively reduced.

Drawings

FIG. 1 is a front view of a reusable endoscopic guide of the present invention with a guidewire guide tube inserted;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a perspective view of the reusable endoscope guide of the present invention with a guidewire guide tube inserted;

FIG. 5 is a rear view of the reusable endoscope guide of the present invention with a guidewire guide tube inserted;

FIG. 6 is a left side view of the reusable endoscope guide of the present invention with a guidewire guide tube inserted;

FIG. 7 is a front view of the operating handle of the present invention;

FIG. 8 is a cross-sectional view taken at C-C of FIG. 7;

FIG. 9 is a rear elevational view of the operating handle of the present invention;

FIG. 10 is a perspective view of an outer sheath tube structure of the present invention;

FIG. 11 is a front view of an outer sheath tube structure of the present invention;

FIG. 12 is a top view of an outer sheath tube structure of the present invention;

FIG. 13 is a cross-sectional view taken along line D-D of FIG. 12;

FIG. 14 is a left side view of the outer sheath tube structure of the present invention;

FIG. 15 is a perspective view of the connecting tube structure of the present invention;

FIG. 16 is a front view of a connecting tube structure according to the present invention;

FIG. 17 is a cross-sectional view E-E of FIG. 16;

FIG. 18 is a left side view of a connector structure of the present invention;

FIG. 19 is a perspective view of a guidewire guide tube structure according to the present invention;

FIG. 20 is a front view of a guidewire guide tube structure according to the present invention;

FIG. 21 is a cross-sectional view F-F of FIG. 20;

the device comprises an operation handle 1, an instrument joint 2, a perfusion joint 3, an endoscope joint 4, a first guide tube 5, an outer sheath tube 6, an extension connecting tube 7, a negative pressure suction joint 8, a spare joint 9, a second guide tube 10, a backflow hole 11, a pressure reducing hole 12, a locking cap 13.1, a cap body 13.2, a positioning ring 14, a sheath tube seat 15, a positioning groove 16, a pressure control hole 17, an operation groove 18, a connecting seat 19, a sealing block 20, a limiting boss 20, a water valve 21, a knob 22, a hole closing device 23, a pin 24, a limiting seat 25, a fixing cap 26 and a guide wire guide tube 27.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The reusable endoscope guide shown in fig. 1-6 comprises an operation handle 1, and an instrument connector 2, a perfusion connector 3, an endoscope connector 4 and a spare connector 9 are arranged on the operation handle 1. A first guide tube 5 communicating with the instrument joint 2, the perfusion joint 3 and the endoscope joint 4 is fixed in the operation handle 1 along the axial direction. The rear end of the operating handle 1 is coaxially and detachably fixed with an outer sheath tube 6. An extension connecting pipe 7 with the front end coaxial and sealed with the first guide pipe 5 and detachably fixed is inserted into the outer sheath pipe 6. A second guide tube 10 communicated with the spare joint 9 is fixed in the operating handle 1 along the axial direction, and the sum of the outer diameter of the extension connecting tube 7 and the outer diameter of the second guide tube 10 is smaller than the inner diameter of the sheath tube 6. The rear end of the extension connecting pipe 7 is positioned in the sheath pipe 6 at a position close to the rear end face of the sheath pipe 6, so that the observation of the endoscope and the operation of the holmium laser are facilitated. Second guide tube 10 is located within sheath hub 14.

As shown in fig. 7 to 9, a limiting seat 25 is fixed at the rear end of the operating handle 1, a positioning groove 15 is formed in the rear of the limiting seat 25, the locking cap 13 includes a cylindrical cap body 13.1 having an internal thread and a positioning ring 13.2 coaxially and fixedly connected to the front end face of the cap body 13.1 and integrated with the cap body 13.1, the inner side portion of the positioning ring 13.2 is disposed in the positioning groove 15, and the locking cap 13 is rotatable.

As shown in fig. 10 to 14, a reflux hole 11 is formed on a side wall of a front end of the outer sheath tube 6, a pressure reducing hole 12 is formed on a side wall of the outer sheath tube 6 opposite to the reflux hole 11, the front end of the outer sheath tube 6 is coaxially fixed in a sheath tube base 14, a negative pressure suction joint 8 communicated with the outer sheath tube 6 is fixed on the sheath tube base 14, a pressure control hole 16 is formed on a surface of the sheath tube base 14, and an operation groove 17 facilitating manual pressing is formed around the pressure control hole 16. The negative pressure suction machine is butted against the negative pressure suction joint 8, and the perfusion fluid is pumped into the negative pressure suction joint 8 from the return hole 11 and discharged out of the guide. The pressure reducing hole 12 can return perfusate, thereby avoiding the damage of the structure of the sheath tube 6 caused by overlarge negative pressure suction pressure after the return hole 11 is blocked. The pressure control hole 16 is pressed by hands, the size of the negative pressure attraction force is adjusted by changing the plugging area of the hands on the pressure control hole 16, when the pressure control hole 16 is not plugged, the outer sheath tube 6 is communicated with the outside, the negative pressure disappears, and when the pressure control hole 16 is plugged completely, the negative pressure attraction force reaches the maximum.

The front end surface of the sheath tube base 14 is provided with an external thread, and the sheath tube base 14 is detachably fixed in the locking cap 13 through the thread.

As shown in fig. 15-18, a connection seat 18 is eccentrically fixed at the front end of the extension connection tube 7, the connection seat 18 is coaxially disposed in the sheath tube seat 14, and a sealing block 19 is fixed in the connection seat 18, as shown in fig. 2, the butt joint of the first guide tube 5 and the extension connection tube 7 is located in the sealing block 19, and the second guide tube 10 passes through the sealing block 19 and is located in the sheath tube seat 14. As shown in fig. 2 and 13, the inner wall of the sheath tube holder 14 is provided with a stopper boss 20 which abuts against the rear end surface of the connection holder 18 and regulates the rear end position of the connection holder 18. As shown in fig. 1 and 3, the front end surface of the sheath tube base 14 is fitted to the rear end surface of the operating handle 1 and detachably fixed by a pin 24, and the front end surface of the sealing block 19 is tightly fitted to the rear end surface of the operating handle 1.

In the present invention, first, the guide wire guide tube 27 shown in fig. 19 to 21 is inserted into the spare joint 9, the fixing cap 26 fixed coaxially with the guide wire guide tube 27 is fitted over the spare joint 9, the guide wire enters the guide wire guide tube 27, and the guide is sheathed over the guide wire. After sheathing is finished, the guide wire guide pipe 27 is taken out, the optical fiber nephroscope is inserted through the endoscope connector 4 to observe a diseased region, the holmium laser is inserted through the instrument connector 2 to carry out lithotripsy operation, and meanwhile, the perfusate is introduced through the perfusion connector 3 to cool the holmium laser treatment region. The negative pressure suction machine is connected with the negative pressure suction connector 8, the perfusate and the gravels are sucked out and discharged out of the body through negative pressure suction, and in the process, the plugging area of the pressure control hole 16 can be controlled by hands, so that the size of the negative pressure suction is controlled, and the optimal suction effect is achieved. In the holmium laser treatment process, if other treatment instruments are required to intervene, the holmium laser treatment device can be inserted through the standby joint 9 so as to meet the treatment requirement, achieve the optimal treatment effect and avoid the secondary operation from causing wound to the human body.

In conclusion, the invention can be inserted into an optical fiber uretero-nephroscope through the endoscope joint 4 to observe a diseased region, the holmium laser is inserted through the instrument joint 2 to complete the lithotripsy operation, and meanwhile, the perfusion fluid is introduced through the perfusion joint 3 and is matched with the negative pressure suction for use, so that the function of taking away the heat generated by the holmium laser and the lithotripsy in the operation is realized. On the basis of the joint function, the guide wire guide tube 27 can be guided into the standby joint 9 to realize the function of sheathing along the guide wire, and after sheathing is finished, the standby joint 9 can also be used as a second instrument joint to guide other instruments to assist in finishing treatment. The endoscope guider designed by the invention has multiple functions and can meet various treatment requirements, and meanwhile, the endoscope guider can be disassembled into the operating handle 1, the outer sheath tube structure and the connecting tube structure to meet the cleaning requirement of the endoscope guider, so that the endoscope guider designed by the invention has the function of repeated use, and the cost is effectively reduced.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A reusable endoscope guider comprises an operation handle (1), wherein an instrument joint (2), a perfusion joint (3) and an endoscope joint (4) are arranged on the operation handle (1), and a first guide tube (5) communicated with the instrument joint (2), the perfusion joint (3) and the endoscope joint (4) is fixed in the operation handle (1) along the axial direction of the operation handle; the method is characterized in that: the coaxial sheath pipe (6) that can dismantle of rear end of operating handle (1) is fixed with, insert in sheath pipe (6) the front end with first guiding tube (5) coaxial seal, can dismantle fixed extension connecting pipe (7), the outer wall of extension connecting pipe (7) with there is the clearance between the inner wall of sheath pipe (6), sheath pipe (6) are connected with and are used for the suction negative pressure suction joint (8) of backward flow perfusate in sheath pipe (6).

2. The reusable endoscopic guide of claim 1, wherein: the operating handle (1) is provided with a spare joint (9), a second guide pipe (10) communicated with the spare joint (9) is fixed in the operating handle (1) along the axial direction of the operating handle, and the sum of the outer diameter of the extension connecting pipe (7) and the outer diameter of the second guide pipe (10) is smaller than the inner diameter of the outer sheath pipe (6).

3. The reusable endoscopic guide of claim 2, wherein: backflow holes (11) are formed in the side wall of the front end of the outer sheath tube (6), and pressure reducing holes (12) are formed in the side wall, opposite to the backflow holes (11), of the outer sheath tube (6).

4. A reusable endoscopic guide according to claim 3, wherein: the rear end of the operating handle (1) is coaxially and rotatably connected with a locking cap (13), the front end of the outer sheath tube (6) is coaxially fixed in a sheath tube seat (14), and the sheath tube seat (14) is detachably fixed in the locking cap (13).

5. The reusable endoscopic guide of claim 4, wherein: locking cap (13) including have internal thread, cylindrical cap body (13.1) and coaxial fixed connection in cap body (13.1) preceding terminal surface, with holding ring (13.2) of cap body (13.1) structure as an organic whole, operating handle (1) rear end seted up with holding ring (13.2) complex constant head tank (15), the medial part of holding ring (13.2) set up in constant head tank (15), the front end surface of sheath tube socket (14) be provided with the external screw thread of the interior screw-thread fit of cap body (13.1).

6. The reusable endoscopic guide of claim 5 wherein: the negative pressure suction connector (8) is fixed on the sheath tube seat (14), and a pressure control structure for controlling the reflux rate of the negative pressure suction connector (8) is further arranged on the sheath tube seat (14).

7. The reusable endoscopic guide of claim 6, wherein: the pressure control structure comprises a pressure control hole (16) arranged on the surface of the sheath tube seat (14).

8. The reusable endoscopic guide of claim 7 wherein: an operation groove (17) convenient for a human hand to press is arranged around the pressure control hole (16).

9. The reusable endoscopic guide of claim 4, wherein: the front end of the extension connecting pipe (7) is coaxially fixed with a connecting seat (18), the connecting seat (18) is coaxially arranged in the sheath pipe seat (14), a sealing block (19) is fixed in the connecting seat (18), the butt joint position of the first guide pipe (5) and the extension connecting pipe (7) is located in the sealing block (19), and the second guide pipe (10) penetrates through the sealing block (19) and is located in the sheath pipe seat (14).

10. The reusable endoscopic guide of claim 9 wherein: be provided with on the inner wall of sheath tube seat (14) with the rear end face laminating of connecting seat (18), restriction spacing boss (20) of the rear end position of connecting seat (18), the preceding terminal surface of sheath tube seat (14) with the rear end face laminating of operating handle (1) and can dismantle fixedly, the preceding terminal surface of sealing block (19) with the rear end face of operating handle (1) closely laminates.