Endoscope

Abstract

The utility model relates to the technical field of medical instruments, in particular to an endoscope. The utility model discloses an endoscope which comprises a handle of a hollow structure, one end of the handle is provided with an operation sheath and a data output line, a water outlet pipe communicated with the operation sheath is arranged in the handle, the handle is connected with an integrated mechanism in the length reverse extension direction of the operation sheath, and the integrated mechanism comprises a three-way pipe body. A first pipe opening of the three-way pipe body is used for being connected with the handle, and a second pipe opening and a third pipe opening of the three-way pipe body are used for being connected with a water inlet pipe and used in cooperation with biopsy forceps. The utility model has the advantage of integrating the functions of water feeding, water pumping, broken stone suction and the like into a whole.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an endoscope. Background Art

[0002] An endoscope is a testing instrument that integrates traditional optics, ergonomics, precision mechanics, modern electronics, mathematics, and software. It is generally used to examine patients with renal pelvic or bladder lesions and is also known as a flexible pyeloscope or cystoscope.

[0003] Chinese patent application number 201410116766.6 discloses a 3D-printed disposable cystoscope operating sheath, which includes a cystoscope body channel and an operating channel. A Luer connector is provided at the end of the operating channel. The front end of the cystoscope body channel is made of transparent material. The cystoscope body channel and the operating channel are independent of each other. The exposed operating channel intersects obliquely with the operating channel of the cystoscope sheath body. Two Luer connectors intersecting perpendicularly with the operating channel are provided near the intersection of the exposed operating channel and the operating channel of the cystoscope operating sheath body. A cystoscope fixing groove is provided at the tail of the cystoscope body channel. The tail of the cystoscope body channel is also provided with two parallel arms with a rectangular cross-section. The lower ends of the two arms can be closed, and the two arms are provided with through holes parallel to the rectangular surface.

[0004] In the above technical solution, the cystoscope body channel and the operating channel are separated by a split arrangement, so that the operating channel and the cystoscope body channel are separated and do not contaminate each other. The cystoscope does not need to be sterilized after use and can be reused after cleaning, thereby saving costs. However, although a Luer connector is provided at the intersection of the operating channel and the cystoscope operating sheath in the above technical solution, it is still unable to integrate the functions required by the cystoscope operating sheath (integrating water supply, water delivery and stone suction into one), resulting in a single function of the cystoscope and poor use effect. Utility Model Content

[0005] The utility model aims to provide an endoscope which can integrate water delivery, water feeding and stone suction into one.

[0006] To achieve the above-mentioned purpose, the utility model discloses an endoscope, comprising a handle with a hollow structure, an operating sheath and a data output line provided at one end of the handle, a water outlet pipe connected to the operating sheath provided in the handle, an integrated mechanism connected to the handle along the reverse extension direction of the length of the operating sheath, the integrated mechanism comprising a three-way tube body, a first tube opening of the three-way tube body being used for connecting to the handle, and a second tube opening and a third tube opening of the three-way tube body being used for connecting to a water inlet pipe and for use with a biopsy forceps, respectively.

[0007] When minimally invasive surgery is required, the doctor uses an operating sheath to enter the patient's body, and then inserts medical equipment such as biopsy forceps or holmium laser into the patient's body through the third tube port, the first tube port and the operating sheath in sequence, opens the second tube port to connect the water inlet pipe and closes the water outlet pipe; when the lithotripsy needs to be suctioned, the water inlet pipe is closed and the water outlet pipe is opened, and the water outlet pipe uses the negative pressure principle to discharge the lithotripsy out of the patient's body.

[0008] The utility model provides an independent water outlet pipe and a three-way pipe body on the endoscope handle, and utilizes the joints of the three-way pipe body to connect the water inlet pipe and the biopsy forceps inlet. While ensuring that medical instruments can smoothly enter the patient's body through the three-way pipe body, the utility model integrates the functions of water intake, water pumping and lithotripsy, thereby reducing the frequency of doctors replacing medical instruments during minimally invasive surgery. The utility model has the advantage of integrating the functions of water intake, water pumping and lithotripsy.

[0009] Preferably, the three-way tube body includes a first channel located between the first tube opening and the third tube opening and a second channel connected to the first channel, and the length direction of the first channel coincides with the length direction of the operating sheath.

[0010] The first channel and the second channel can be connected obliquely. When the angle between the second channel and the first channel is 90 degrees, the first channel and the second channel are vertical, thereby facilitating the insertion or removal of medical equipment into the operating sheath through the second tube opening.

[0011] Preferably, the first pipe opening and the handle are connected via a Luer connector.

[0012] Compared with a method in which the first pipe mouth is directly adhered to the handle or threadedly connected to the handle, the invention has higher waterproof performance, thereby allowing multiple mutually compatible fluids to be managed using the same pipe.

[0013] Preferably, the integrated mechanism further includes a water inlet valve provided on the second channel, the water inlet valve including a water inlet valve core provided in the second channel and a water inlet valve provided outside the second channel, the water inlet valve core being connected to the water inlet valve.

[0014] By controlling the opening and closing state of the water inlet valve core through the water inlet valve core, fluid or medical equipment can be directly supplied through the second channel through the second pipe opening and the water inlet valve core into the first channel, and thus into the operating sheath. There is no need to connect an external switch, and the opening and closing of the second channel can be controlled by only a switch close to the doctor's hand, which is convenient for the doctor to operate.

[0015] Preferably, the integrated mechanism also includes a tail assembly arranged at the third pipe mouth, the tail assembly includes a tail plug with a hollow structure and a tail core arranged at the axis of the tail plug, the side wall between the tail plug and the tail core forms an assembly groove, and the third pipe mouth is threadedly connected to the side wall of the assembly groove.

[0016] The tail plug is connected to the first channel through the tail core, thereby facilitating the medical equipment to be inserted into the operating sheath through the third tube opening.

[0017] Preferably, a sealing ring is provided between the tail core and the third pipe opening, and the sealing ring can be deformed in the axial direction after being squeezed.

[0018] When the sealing ring is squeezed, it can deform inwards until it blocks the head of the tail core, thereby achieving sealing of the third pipe opening.

[0019] Preferably, a step is provided on the inner side of the assembly groove, an annular ridge is provided at the opening of the assembly groove, and an annular ridge is provided on the outer circular surface of the first channel, which is located between the step and the annular ridge; when the sealing ring is squeezed to an extreme shape, the annular ridge is offset against the annular ridge, and when the sealing ring is in a normal state, the steps are offset against each other.

[0020] The annular ridges and the steps can limit the stopping positions on both sides of the tail plug when the tail plug moves along the length direction of the first channel.

[0021] Preferably, the annular protrusion is provided with a chamfer at one end along the length direction of the first channel.

[0022] The chamfer can reduce the stress when the annular protrusion and the annular convex strip are assembled, thereby facilitating the assembly of the tail plug onto the third opening.

[0023] Preferably, an open-ended guide channel is provided on the side of the tail core away from the third pipe opening. The open-ended guide channel can expand the entrance size of the tail plug, thereby facilitating the medical equipment to enter the first channel through the third pipe opening.

[0024] The utility model can integrate the functions of water intake, water pumping and lithotripsy while ensuring that medical instruments can smoothly enter the patient's body through the three-way tube body 20, and has the advantage of reducing the frequency of doctors replacing medical instruments during minimally invasive surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the present utility model.

[0026] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0027] Figure 3It is a schematic cross-sectional structural diagram of the integrated mechanism of the present utility model.

[0028] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0029] In the figure: 11, handle; 12, operating sheath; 13, data output line; 14, water outlet pipe; 20, three-way pipe body; 201, water inlet valve core; 202, water inlet channel; 21, Luer connector; 211, first connecting part; 212, second connecting part; 213, third connecting part; 22, water inlet valve; 23, tail plug; 24, annular protrusion; 241, chamfer; 25, tail core; 251, guide channel; 26, annular ridge; 27, step; 30, sealing ring. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Depend on Figure 1 As shown, the present embodiment discloses an endoscope, including a handle 11 with a hollow structure. The handle 11 is in an arc-shaped structure that fits with the user's hand after gripping. An operating sheath 12 and a data output line 13 are provided at one end of the handle 11 along the arc direction. A water outlet pipe 14 connected to the operating sheath 12 is provided in the handle 11. The water outlet pipe 14 fits with the overall arc of the handle 11. The water outlet pipe 14 is the same as the negative pressure pipe structure in the prior art for achieving suction inside an object through the negative pressure principle. An integrated mechanism is connected to the handle 11 along the length of the operating sheath 12 in the opposite extension direction. The integrated mechanism includes a three-way pipe body 20. The three-way pipe body 20 includes a first A channel and a second channel vertically connected to the first channel, the length direction of the first channel coincides with the length direction of the operating sheath 12, the first pipe mouth of the three-way tube body 20 is connected to the handle 11 through a Luer connector 21, the Luer connector 21 includes a first connecting part 211, a second connecting part 212 and a third connecting part 213 for supporting the first connecting part 211 and the second connecting part 212, the first connecting part 211 is used to connect to the handle 11, the second connecting part 212 is matched with the three-way tube body 20 through its own material toughness through a concave-convex fit, the integrated mechanism also includes a water inlet valve provided on the second channel and a tail assembly provided at the third pipe mouth.

[0032] Depend on Figure 2 As shown, the water inlet valve includes a water inlet valve core 201 arranged in the second channel and a water inlet valve 22 arranged outside the second channel. The water inlet valve core 201 is connected to the water inlet valve 22. The second pipe port and the third pipe port of the three-way pipe body 20 are respectively used to be connected to the water inlet pipe and used in conjunction with the biopsy forceps.

[0033] When the water inlet channel 202 in the water inlet valve core 201 is in a state of coinciding with the length direction of the second channel, the water inlet valve is in an open state, thereby allowing fluid or medical equipment to enter the first channel through the second pipe opening and the water inlet valve core 201, and then enter the operating sheath 12.

[0034] Depend on Figure 3 、 Figure 4 As shown, the tail assembly includes a tail plug 23 with a hollow structure and a tail core 25 arranged at the axis of the tail plug 23. The side wall between the tail plug 23 and the tail core 25 forms an assembly groove. The tail core 25 is provided with an open guide channel 251 on the side away from the third pipe opening. The third pipe opening is threadedly connected to the side wall of the assembly groove. A sealing ring 30 is provided between the tail core 25 and the third pipe opening. The sealing ring 30 can be deformed in the axial direction after being squeezed. A step 27 is provided on the inner side of the assembly groove, and an annular ridge 26 is provided at the opening of the assembly groove. An annular protrusion 24 is provided on the outer circumferential surface of the first channel and is located between the step 27 and the annular ridge 26. The annular protrusion 24 is provided with a chamfer 241 at one end along the length direction of the first channel.

[0035] When the sealing ring 30 is in normal state, the steps 27 abut against each other; when the sealing ring 30 is squeezed to the extreme shape, the annular protrusion 24 abuts against the annular ridge 26. At this time, the sealing ring 30 deforms inward until the head of the tail core 25 is blocked, thereby achieving sealing of the third pipe opening.

[0036] When minimally invasive surgery is required, the doctor uses the operating sheath 12 to enter the patient's body, and then inserts medical equipment such as biopsy forceps or holmium laser into the patient's body through the third pipe port, the first pipe port and the operating sheath 12 in sequence, rotates the water inlet valve 22, and then connects the second pipe port with the outside world. At this time, the water inlet pipe is connected to the second pipe port and the water outlet pipe 14 is closed; when it is necessary to suction the gravel, reverse the water inlet valve 22 and connect the water outlet pipe 14 to the outside world. The water outlet pipe 14 can use the negative pressure principle to discharge the gravel out of the patient's body.

Claims

1. An endoscope comprising a handle having a hollow structure, one end of which is provided with an operating sheath and a data output line, characterized in that: A water outlet pipe connected to the operating sheath is provided in the handle, and an integrated mechanism is connected to the handle along the reverse extension direction of the length of the operating sheath. The integrated mechanism includes a three-way pipe body, and the first pipe opening of the three-way pipe body is used to be connected to the handle, and the second pipe opening and the third pipe opening of the three-way pipe body are respectively used to be connected to the water inlet pipe and used in conjunction with the biopsy forceps.

2. An endoscope according to claim 1, characterized in that: The three-way tube body includes a first channel located between the first tube opening and the third tube opening and a second channel connected to the first channel. The length direction of the first channel coincides with the length direction of the operating sheath.

3. An endoscope according to claim 2, characterized in that: The first pipe opening is connected to the handle via a Luer connector.

4. An endoscope according to claim 2 or 3, characterized in that: The integrated mechanism further includes a water inlet valve arranged on the second channel, the water inlet valve includes a water inlet valve core arranged in the second channel and a water inlet valve arranged outside the second channel, and the water inlet valve core is connected to the water inlet valve.

5. An endoscope according to claim 2 or 3, characterized in that: The integrated mechanism also includes a tail assembly arranged at the third pipe mouth, the tail assembly includes a tail plug with a hollow structure and a tail core arranged at the axis of the tail plug, the side wall between the tail plug and the tail core forms an assembly groove, and the third pipe mouth is threadedly connected to the side wall of the assembly groove.

6. An endoscope according to claim 5, characterized in that: A sealing ring is provided between the tail core and the third pipe opening, and the sealing ring can be deformed in the axial direction after being squeezed.

7. An endoscope according to claim 6, characterized in that: A step is provided on the inner side of the assembly groove, an annular ridge is provided at the opening of the assembly groove, and an annular ridge is provided on the outer circumferential surface of the first channel; when the sealing ring is squeezed to an extreme shape, the annular ridge and the annular ridge are offset, and when the sealing ring is in a normal state, the steps are offset.

8. An endoscope according to claim 7, characterized in that: One end of the annular protrusion along the length direction of the first channel is chamfered.

9. An endoscope according to claim 5, 6, 7 or 8, characterized in that: An open guide channel is provided on a side of the tail core away from the third pipe opening.

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