CN219742655U

CN219742655U - Medical instrument

Info

Publication number: CN219742655U
Application number: CN202320525859.9U
Authority: CN
Inventors: 高宏硕; 张锦标
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-09-26
Anticipated expiration: 2033-03-17

Abstract

The utility model provides a medical appliance, which comprises a puncture needle, a Y-shaped joint, an endoscope and a working instrument. The endoscope comprises a cannula, a light source input end and an output end, wherein the light source input end is used for inputting a light source and transmitting the light source into the cannula; the Y-shaped joint is provided with a first branch, a second branch and a third branch, one end of the first branch is connected with the puncture needle, the insertion tube enters from the interface at the other end of the first branch, passes through the first branch and the puncture needle, and then extends out from the puncture end of the puncture needle; the actuating part and the pipeline part of the working device enter from the interface of the third branch, pass through the first branch and then extend out from the puncture end. Thus, the medical instrument of the utility model can treat biological tissues through the working instrument, the working instrument can directly treat the biological tissues after being arranged in the endoscope for positioning, and the injection interface can be used for injecting medicaments for treatment.

Description

Medical instrument

Technical Field

The utility model relates to a medical appliance with the functions of injecting, clamping and placing medical materials or medicines, in particular to a medical appliance which can directly treat biological tissues by using a working appliance after an endoscope is positioned by combining the endoscope with the working appliance.

Background

As surgical operations continue to progress, minimally invasive surgical methods have been widely employed from traditional open surgery to current minimally invasive surgery, such as arthroscopic surgery and laparoscopic surgery. In minimally invasive surgery, small incisions are made at the site of insertion and introduction of the internal organs or tissues to be operated on into tubular catheters (e.g., cannulas and trocars), and one or more surgical instruments are introduced through the individual tubular catheters, respectively, in order to perform the surgical procedure. Since only a few pores are created for insertion of the working instrument, minimally invasive surgery causes less injury to the patient, faster healing periods and less cosmetic damage.

Secondly, the medical endoscope and accessories thereof can enter the human body through various pipelines to observe the interior of the human body or be used as surgical instruments, and can be widely applied to digestive systems such as throat, stomach, intestines, gall bladder and the like of the human body and urinary systems. The known endoscope detection is that a lens is arranged at one end of a flexible pipeline, and various types of endoscope lenses are arranged in cooperation with different endoscopes; when the endoscope is used, the insertion tube of the endoscope is inserted into a body, so that the light source enters the front of the insertion tube and is observed through the lens, the observation of the body is facilitated, and then data are transmitted back to observers and related electronic instruments, so that diagnosis and treatment are facilitated for doctors. In addition, common accessories such as clamps, surgeons can use different clamps to grasp, peel, cut or repair internal organs or internal tissues according to the operation requirement. However, the endoscope generally used does not have the function of injecting the medicament, and the surgeon needs to perform the medicament injection by other modes, so that the operation steps are complicated and the operation time is increased, and the operation risk is easily generated

In view of this, the present inventors have put into many developments in energy and spirit, and have made breakthroughs and innovations in the art, and have been able to solve the deficiencies of the prior art by means of novel techniques, and promote the development of industry in addition to bringing more improved products to society.

Disclosure of Invention

In view of the above-mentioned needs, it is an object of the present utility model to provide a medical device which can be directly injected when an endoscope is positioned and which can be used to grasp, peel, cut or repair internal organs or tissues; the wound made by the method is smaller, and the recovery period can be shortened without additional treatment after operation.

In order to achieve the above object, the present utility model provides a medical apparatus, comprising a puncture needle, a Y-shaped connector, an endoscope and a working device; the puncture needle is provided with a puncture end, a tubular part, a seat body and a connecting part, wherein the seat body is communicated with the tubular part and the connecting part, and the puncture end is positioned at the front end of the tubular part. The Y-shaped joint is provided with a first rotating part, a second rotating part, a third rotating part and three communicating pipes, wherein the three communicating pipes comprise a first branch, a second branch and a third branch, the first branch is communicated with the second branch and the third branch, the first rotating part and the second rotating part are oppositely arranged at two ends of the first branch, the third rotating part is arranged at one end of the second branch, and the puncture needle is screwed into a protruding block of the first rotating part along an internal thread of the first rotating part through a penetrating opening on the connecting part of the puncture needle. Furthermore, the endoscope comprises a cannula, a light source input end and an output end, wherein the cannula is provided with a lens and a tube part, the lens is arranged at the front end of the tube part and is used for capturing a plurality of images, and the cannula is a hose or a hard tube; the light source input end is used for inputting a light source and transmitting the light source into the pipe part; the holding part is communicated with the light source input end; the output end is arranged at one end of the holding part and communicated with the holding part. In addition, the working device comprises an executing part, a pipeline part and a grab handle, wherein the executing part and the grab handle are respectively connected with two ends of the pipeline part; the cannula enters from a first connector of the second rotating part, passes through the first branch of the Y-shaped joint, passes through the first rotating part and passes through the connecting part of the puncture needle, the seat body and the tubular part, and the lens of the cannula extends out from the puncture end. Then, the actuating part and the pipeline part of the working device enter from a second interface of the third rotating part, pass through the first branch of the Y-shaped joint, pass through the first rotating part and pass through the connecting part, the seat body and the tubular part of the puncture needle, and extend out from the puncture end.

In the medical apparatus of the present utility model, the first rotating portion has a first sealing ring for being pressed to force the inner diameter of the first sealing ring to be reduced when the first rotating portion is screwed, so as to tightly seal the tube portion of the endoscope and the pipe portion of the working device; the second rotating part is provided with a second sealing ring, and when the second rotating part is screwed, the second sealing ring is pressed to force the inner diameter of the second rotating part to be reduced so as to tightly close the pipe part of the endoscope; the third rotating part is provided with a third sealing ring, and when the third rotating part is screwed, the third sealing ring is pressed to force the inner diameter of the third sealing ring to be reduced so as to tightly clamp the pipeline part of the working device.

In the medical device according to the present utility model, the puncture tip of the puncture needle is a flat surface, an inclined surface, a conical surface, a blunt conical surface, a circular arc shape or a conical surface.

In the medical apparatus of the present utility model, the endoscope further comprises a switching mechanism, the switching mechanism is connected with the output end, the switching mechanism is an optical fiber light collecting structure, an image transmission switching mechanism or a power supply required by an LED light source, and the switching mechanism comprises a wireless transmission module or a conventional wire transmission.

In the medical device of the present utility model, the third branch has an injection port for injecting a drug from the injection port, so that the drug is distributed among the puncture needle, the tube portion and the tube portion through the first rotating portion after being injected.

In the medical apparatus of the present utility model, the injection needle further comprises an optical member disposed in front of the lens, wherein the optical member has a hollow rounded-tip triangle structure composed of a parallel plate and a semi-cylinder with an inclined surface.

In the medical apparatus of the present utility model, the optical member is a solid rounded triangle structure, the inclined surface portion of the solid rounded triangle structure has a stepped processing plane, the stepped processing plane is partially or completely distributed on the inclined surface portion, and the stepped processing plane may be a micro-scale structure or a nano-scale structure.

In the medical apparatus of the present utility model, the output end is respectively connected with an output device, an image reading device and an image processing device, the output device comprises a communication device, a control device and a display device, the communication device is coupled with the lens and is used for transmitting the plurality of images captured by the lens; the control device is in communication connection with the communication device and is used for receiving the plurality of images sent by the communication device and processing the plurality of images; the display device is coupled with the control device and used for receiving and displaying the processed plurality of images.

In the medical device of the present utility model, the working device is a biopsy forceps, an electrocoagulation device, an ultrasonic scalpel, an electric scalpel, or a laser fiber device, or a combination thereof.

In the medical device according to the present utility model, when the working device is a biopsy forceps, the actuator includes at least two gripping portions connected to the fixed portion, and a fixed portion connected to the line portion.

In view of the foregoing, and in order to provide a better understanding of the present utility model, a preferred embodiment is disclosed, and the following detailed description of the construction of the present utility model and the effects achieved by the construction will be given with reference to the drawings and figures.

Drawings

FIG. 1a is a schematic view of a lancet of the present utility model;

FIG. 1b is a schematic view of a Y-connector according to the present utility model;

FIG. 1c is a schematic view of the connection of the puncture needle with a Y-connector according to the present utility model;

FIG. 1d is a schematic view of another view of a Y-connector of the present utility model;

FIG. 1e is a schematic view of the cannula of the endoscope of the present utility model penetrating a Y-connector;

FIG. 1f is a schematic view of the connection of the needle, Y-connector and endoscope of the present utility model;

FIG. 1g is a schematic view of the connection of the lancet, Y-connector, endoscope and working instrument of the present utility model;

FIG. 2 is a schematic cross-sectional view of the structure of embodiment 1 of the present utility model;

fig. 3a to 3h are schematic views of different modes of the actuator according to the present utility model.

FIG. 4 is a schematic structural diagram of embodiment 2 of the present utility model;

FIG. 5 is a schematic cross-sectional view of a structure of an embodiment 2 of the present utility model;

FIG. 6 is a schematic cross-sectional view of a structure of embodiment 3 of the present utility model;

FIG. 7a is an enlarged side perspective view of A in FIG. 1 g;

FIG. 7b is another enlarged side perspective view of A in FIG. 1 g;

FIG. 7c is a further enlarged side perspective view of A in FIG. 1 g;

FIG. 7d is a further enlarged side perspective view of A in FIG. 1 g;

FIG. 8 is an enlarged partial cross-sectional view of the lancet of the present utility model;

FIG. 9 is an enlarged partial cross-sectional view of yet another embodiment of the lancet of the present utility model; and

fig. 10 is a schematic view of an endoscope of the present utility model.

Reference numerals illustrate: 1-medical appliance; 10-puncture needle; 11-piercing end; 12-a tubular portion; 13-a base; 14-connecting part; 141-a through-penetration; a 20-Y type joint; 21-a first rotating part; 211-internal threads; 212-a bump; 213-a first sealing ring; 22-a second rotating part; 221-a first interface; 222-a second sealing ring; 23-a third rotation section; 231-a second interface; 24-three communicating pipes; 241-first branch; 242-a second branch; 243-third branch; 2431-an injection interface; 2432-a medicament; 30-an endoscope; 301-optical fiber beam; 31-intubation; 311-lens; 312-tube portion; 313-an optical member; 314—a first side; 32-a light source input; 33-a grip; 34-an output; 341-output means; 3411-communication means; 3412-control means; 3413-display device; 40-working device; 41-an execution unit; 411-a gripping portion; 412-a fixing part; 42-connecting part; 43-grab handle.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the present disclosure, when the following description of the embodiments is taken in conjunction with the accompanying drawings. In addition, the utility model may be practiced or carried out in other embodiments and modifications without departing from the spirit thereof.

Referring to fig. 1a to 2, fig. 1a is a schematic view of a puncture needle according to the present utility model; FIG. 1b is a schematic view of a Y-connector according to the present utility model; FIG. 1c is a schematic view of the connection of the puncture needle with a Y-connector according to the present utility model; FIG. 1d is a schematic view of another view of a Y-connector of the present utility model; FIG. 1e is a schematic view of the cannula of the endoscope of the present utility model penetrating a Y-connector; FIG. 1f is a schematic view of the connection of the needle, Y-connector and endoscope of the present utility model; FIG. 1g is a schematic view of the connection of the lancet, Y-connector, endoscope and working instrument of the present utility model; and FIG. 2 is a schematic cross-sectional view of the structure of embodiment 1 of the present utility model.

As shown in fig. 1a to 2, the present utility model relates to a medical device 1, which comprises a puncture needle 10, a Y-joint 20, an endoscope 30 and a working device 40; the puncture needle 10 has a puncture end 11, a tubular portion 12, a seat 13 and a connecting portion 14, wherein the seat 13 is communicated with the tubular portion 12 and the connecting portion 13, the puncture end 11 is located at the front end of the tubular portion 12, and the puncture end 11 is a plane, an inclined plane, a conical plane, a blunt conical plane, a circular arc or a conical plane. Next, the Y-joint 20 has a first rotating portion 21, a second rotating portion 22, a third rotating portion 23 and a three communicating tube 24, the three communicating tube 24 includes a first branch 241, a second branch 242 and a third branch 243, the first branch 241 is communicated with the second branch 242 and the third branch 243, the first rotating portion 21 and the second rotating portion 22 are oppositely disposed at two ends of the first branch 241, the third rotating portion 23 is disposed at one end of the second branch 242, and the penetrating needle 10 is screwed into a protruding block 212 of the first rotating portion 21 along an internal thread 211 of the first rotating portion 21 through a penetrating hole 141 of the connecting portion 14 of the penetrating needle 10. In addition, the third branch 243 has an injection port 2431, and the medicine is injected from the injection port 2431, enters the first branch 241 through the third branch 243, and flows into the puncture needle 10, and enters the puncture needle 10 through the first branch 31.

Furthermore, the endoscope 30 comprises a cannula 31, a light source input end 32, a holding part 33 and an output end 34; the cannula 31 has a lens 311 and a tube 312, the lens 211 is disposed at the front end of the tube 312 for capturing a plurality of images, wherein the lens may be a conventional optical image transmitter (e.g. optical fiber, but the utility model is not limited thereto), a CCD (Charge Coupled Device, photosensitive coupling element) lens, or a CMOS (Complementary Metal-Oxide Semiconductor, complementary metal oxide semiconductor) lens; the cannula 31 is a flexible tube or a rigid tube, and the cannula 31 may be movably or fixedly coupled to the inside of the lancet 10. The light source input end 32 is used for inputting a light source and transmitting the light source into the pipe portion 312, the light source can be an optical fiber light beam or an LED light source, when the light source is an LED light source, the light source is located at the front end of the pipe portion 312, and an LED power line is arranged in the pipe portion 312; the holding part 33 is communicated with the light source input end 32; and an output end 34 disposed at one end of the holding portion 33 and communicating with the holding portion 33. In this embodiment, the light source is the fiber light beam, and the light source input end 32 is used for inputting the fiber light beam 101 and transmitting the fiber light beam 101 into the cannula 21. Furthermore, the diameter of the cannula 21 may be between 0.8mm and 1.6 mm; and the diameter of the needle 10 may be between 1.2mm and 2.5 mm.

In addition, the working device 40 includes an executing portion 41, a pipe portion 42 and a handle 43, wherein the executing portion 41 and the handle 43 are respectively connected to two ends of the pipe portion 42; wherein the cannula 31 enters from a first port 221 of the second rotating portion 22, the cannula 31 passes through the first branch 241 of the Y-shaped connector 20, passes through the first rotating portion 21 and passes through the connecting portion 14, the base 13 and the tubular portion 12 of the puncture needle 10, and the lens 311 of the cannula 31 protrudes from the puncture end 11; the actuating portion 41 and the pipeline portion 42 of the working device 40 enter from a second interface 231 of the third rotating portion 23, the actuating portion 41 and the pipeline portion 42 pass through the second branch 242 of the Y-shaped connector 20, pass through the first rotating portion 21 and pass through the connecting portion 14, the seat 13 and the tubular portion 12 of the puncture needle 10, and the actuating portion 41 protrudes from the puncture end 11.

As shown in fig. 2, the first rotating portion 21 has a first sealing ring 213, and when the first rotating portion 21 is screwed, the first sealing ring 213 is pressed to reduce the inner diameter thereof so as to tightly seal the tube portion 312 of the endoscope 30 and the pipe portion 42 of the working device 40; the second rotating part 22 has a second sealing ring 222, and when the second rotating part 22 is screwed, the second sealing ring 222 is pressed to reduce the inner diameter so as to tightly seal the tube part 312 of the endoscope 30; the third rotary part 23 has a third sealing ring 232, and when the third rotary part 23 is screwed, the third sealing ring 232 is pressed to reduce the inner diameter thereof so as to tightly seal the pipe line part 42 of the work implement 40.

Referring to fig. 3a to 3h, fig. 3a to 3h are schematic views of the execution part according to the present utility model.

As shown in fig. 3a to 3h, the working device 40 may be arbitrarily changed according to the needs of the user, and the working device 40 may be a biopsy forceps, an electrocoagulation device, an ultrasonic scalpel, an electric scalpel, a laser fiber-optic device, or the like, but the present utility model is not limited thereto. In this embodiment, the working device 40 is a biopsy forceps, the performing portion 41 is a forceps head, and has at least two clamping portions 411 and a fixing portion 412, the two clamping portions 411 are connected to the fixing portion 412, the fixing portion 412 is connected to the pipeline portion 42, and the two clamping portions 411 are used for clamping biological tissue. The actuator 41 of fig. 3a can be used for in vivo examinations; the actuator 41 of fig. 3b is serrated; the actuator 41 of fig. 3c can be used to grip foreign objects; the actuator 41 of fig. 3d is a pair of scissors. Fig. 3e to 3h show the same clamp head as the actuator 41 for placing medical materials or medicines, and fig. 3e shows the actuator 41 in an undeployed state; FIG. 3f shows the half-open state of the executing portion 41, wherein the clamping portion 411 can open the biological tissue and then extend a solid portion 411 'into the biological tissue, and the arrows in the drawing represent the moving directions of the clamping portion 411 and the solid portion 411'; FIG. 3g shows the clamping portion 411 and the solid portion 411' fully opened; fig. 3h shows the state that the clamping part 411 and the solid part 411' are closed. The form of the actuator 41 can be changed according to the user's needs, but the present utility model is not limited thereto, and any working apparatus that can be used for grasping, peeling, cutting or repairing viscera or internal tissues is encompassed by the present utility model. Next, the shape of the top end of the solid portion 411' may be changed according to the user's requirement, and the shape of the top end of the solid portion 411' may be rectangular, shield-shaped, pointed or saw-tooth, but the present utility model is not limited thereto. Furthermore, as shown in fig. 3g, the length of the inner space of the clamping portion 411 is F, and the length of the solid portion 411' is D, when 0.5F < D < F, the executing portion 41 is adapted to penetrate into the harder tissue to take out or push out the medical material or medicine; when D is smaller than (1/2) F, the actuator 41 is adapted to place a larger drug in the inner space; and when D is greater than or equal to 1/2F, the actuator 11 is adapted to place a smaller drug in the interior space.

FIG. 4 is a schematic structural diagram of embodiment 2 of the present utility model; and FIG. 5 is a schematic cross-sectional view of the structure of embodiment 2 of the present utility model.

As shown in fig. 4 and 5, the medical device of embodiment 2 of the present utility model is substantially the same as embodiment 1, except that the cannula 31 of the endoscope 30 of embodiment 1 is a flexible tube, and the cannula 31 of the endoscope 30 of embodiment 2 is a hard tube. The cannula 31 of the endoscope 30 is inserted through the interface 221 of the second rotating portion 22, the cannula 31 passes through the first branch 231 of the Y-shaped connector 20, through the first rotating portion 21 and through the connecting portion 14, the base 13 and the tubular portion 12 of the puncture needle 10, and the lens 511 of the cannula 51 protrudes from the puncture end 11. Next, the first rotating part 21 has the first sealing ring 213, so as to tightly seal the tube 512 of the endoscope 50; the second rotating part 22 has the second sealing ring 222, which can tightly seal the tube part 512 of the endoscope 50; medicament can be injected from the injection port 2431 of the second branch 242 so that medicament can be distributed in the puncture needle 10

Referring to fig. 6, fig. 6 is a schematic cross-sectional view of an embodiment 3 of the present utility model.

As shown in fig. 6; the endoscope 30 further comprises a switching mechanism 35, the switching mechanism 35 is connected with the output end 34, the switching mechanism 35 is an optical fiber light collecting structure, an image transmission switching mechanism or a power supply required by an LED light source, and the switching mechanism comprises a wireless transmission module or a traditional line transmission.

Referring to fig. 7a to 7d, fig. 7a is an enlarged side perspective view of a of fig. 1 g; FIG. 7b is another enlarged side perspective view of A in FIG. 1 g; FIG. 7c is a further enlarged side perspective view of A in FIG. 1 g; and FIG. 7d is a further enlarged side perspective view of A in FIG. 1 g.

As shown in fig. 7a, the lens 311 is disposed at the front end of the tube portion 312 of the cannula 31 for capturing a plurality of images; the lens 311 may be a CCD (Charge Coupled Device, photo-sensitive coupling device) lens or a CMOS (Complementary Metal-Oxide Semiconductor, complementary metal oxide semiconductor) lens. As shown in fig. 7b, the structures of fig. 7b and 7a are substantially the same, except that: the puncture needle 10 of fig. 7b further includes an optical member 313, wherein the optical member 313 is disposed in front of the lens 311, and the optical member 313 is a hollow round-pointed triangle structure formed by a parallel plate and a semi-cylinder with an inclined plane, and the optical member 313 can be a glass or an optical plastic, and the optical plastic can avoid the problem of optical refraction of the image captured by the lens 311. As shown in fig. 7c, fig. 7c is substantially identical to fig. 7b in structure, except that: the optical member 313 of fig. 7c is a solid rounded triangle structure, and the inclined surface portion of the solid rounded triangle structure has a stepped processing plane, which may be a micro-scale structure or a nano-scale structure, and the stepped processing plane may be partially distributed or completely distributed on the inclined surface portion according to the requirement of the user. As shown in fig. 7d, fig. 7d is substantially identical to the structure of fig. 7a, except that: in fig. 7d, the lens 311 is disposed above in fig. 7a, and in fig. 7d, the lens 311 is disposed below, and the front end of the cannula 31 is a first surface 314, and the first surface 314 is a circular arc or a conical surface to avoid optical refraction.

Referring to fig. 8, fig. 8 is an enlarged partial cross-sectional view of the puncture needle according to the present utility model.

As shown in fig. 8, the optical fiber beam 301 is located at two sides of the lens 311, when the medicine 2432 is injected from the injection port 2431, the medicine 2432 is distributed in the puncture needle 10, and the working device 40 is disposed in the puncture needle 10.

Referring to fig. 9, fig. 9 is an enlarged partial cross-sectional view of a lancet according to the present utility model.

As shown in fig. 9, the working device 40 is disposed in the puncture needle 10, the lens 311 is disposed above the working device 40, and the medicament 2432 is distributed in the puncture needle 10 and in the gap between the lens 311 and the working device 40; wherein, the lens 311 may have a diameter of 0.6mm and a length of 20cm to 2m.

Referring to fig. 10, fig. 10 is a schematic view of an endoscope according to the present utility model.

As shown in fig. 10, the output 34 may be an eyepiece or the output 34 may be coupled to an output device 341. The output device 341 includes a communication device 3411, a control device 3412, and a display device 3413, where the communication device 3411 is coupled to the lens 311 for sending the plurality of images captured by the lens 311; the control device 3412 is communicatively connected to the communication device 3411, and is configured to obtain the plurality of images sent by the communication device 3411 and process the plurality of images; the display device 3413 is coupled to the control device 3412 for displaying the processed images, so that a doctor can observe the body through the lens 311, and then transmit the data back to the communication device 3411 for further image processing and display the result on the display device 3413 for diagnosis and treatment. In an embodiment, the output terminal 34 may be connected to the output device 341 through a wireless connection, which may include bluetooth, zigBee, wi-Fi, or RF, but the present utility model is not limited thereto. Next, the output device 341 may be a display screen, a portable electronic device or a VR glasses, and the doctor can watch the image captured by the lens by wearing the VR glasses, but the utility model is not limited thereto. Next, the image reading device 342 is coupled to the lens 311 for reading the plurality of images captured by the lens 311; the image processing device 343 can process the plurality of images read by the image reading device 342.

Claims

1. A medical device, comprising:

the puncture needle is provided with a puncture end, a tubular part, a seat body and a connecting part, wherein the seat body is communicated with the tubular part and the connecting part, and the puncture end is positioned at the front end of the tubular part;

the Y-shaped connector is provided with a first rotating part, a second rotating part, a third rotating part and three communicating pipes, the three communicating pipes comprise a first branch, a second branch and a third branch, the first branch is communicated with the second branch and the third branch, the first rotating part and the second rotating part are oppositely arranged at two ends of the first branch, the third rotating part is arranged at one end of the second branch, and the puncture needle can be screwed into a protruding block of the first rotating part along an internal thread of the first rotating part through a penetrating opening on the connecting part of the puncture needle;

an endoscope, comprising:

a cannula having a lens and a tube portion, the lens being disposed at a front end of the tube portion for capturing a plurality of images, the cannula being a hose or a hard tube;

a light source input end for inputting a light source and transmitting the light source into the tube portion;

a holding part communicated with the light source input end; a kind of electronic device with high-pressure air-conditioning system

The output end is arranged at one end of the holding part and communicated with the holding part; and

the working device comprises an execution part, a pipeline part and a grab handle, wherein the execution part and the grab handle are respectively connected with two ends of the pipeline part;

the cannula enters from a first connector of the second rotating part, passes through the first branch of the Y-shaped joint, passes through the first rotating part and passes through the connecting part of the puncture needle, the seat body and the tubular part, and the lens of the cannula extends out from the puncture end;

the actuating part and the pipeline part of the working instrument enter from a second interface of the third rotating part, pass through the second branch of the Y-shaped joint, pass through the first rotating part and pass through the connecting part, the seat body and the tubular part of the puncture needle, and extend out from the puncture end.

2. The medical device according to claim 1, wherein the first rotating portion has a first sealing ring for being pressed to force the inner diameter of the first sealing ring to be reduced when the first rotating portion is screwed so as to tighten the tube portion of the endoscope and the tube portion of the working instrument; the second rotating part is provided with a second sealing ring, and when the second rotating part is screwed, the second sealing ring is pressed to force the inner diameter of the second rotating part to be reduced so as to tightly close the pipe part of the endoscope; the third rotating part is provided with a third sealing ring, and when the third rotating part is screwed, the third sealing ring is pressed to force the inner diameter of the third sealing ring to be reduced so as to tightly clamp the pipeline part of the working device.

3. The medical device of claim 1, wherein the piercing end of the piercing needle is a flat surface, a beveled surface, a tapered surface, a blunt tapered surface, a rounded or a conical surface.

4. The medical apparatus of claim 1, wherein the endoscope further comprises a switching mechanism, the switching mechanism is connected to the output end, the switching mechanism is a fiber optic light collecting structure, an image transmission switching mechanism or a power source required by an LED light source, and the switching mechanism comprises a wireless transmission module or a conventional wire transmission.

5. The medical device of claim 1, wherein the third branch has an injection port for injecting a medicament from the injection port such that the medicament is distributed between the puncture needle, the tube portion and the connection portion through the first rotation portion after being injected.

6. The medical device of claim 1, further comprising an optical member disposed in front of the lens, the optical member being a hollow rounded-tip triangle formed of a parallel plate and a beveled semi-cylinder.

7. The medical device of claim 1, further comprising an optical member disposed in front of the lens, the optical member having a solid rounded triangle structure, the bevel portion of the solid rounded triangle structure having a stepped processing plane partially or fully distributed in the bevel portion, the stepped processing plane being a micro-scale structure or a nano-scale structure.

8. The medical apparatus according to claim 1, wherein the output end is respectively connected with an output device, an image reading device and an image processing device, the output device comprises a communication device, a control device and a display device, the communication device is coupled with the lens for transmitting the plurality of images captured by the lens; the control device is in communication connection with the communication device and is used for receiving the plurality of images sent by the communication device and processing the plurality of images; the display device is coupled with the control device and used for receiving and displaying the processed plurality of images.

9. The medical device of claim 1, wherein the working device is a biopsy forceps, an electrocoagulation device, an ultrasonic surgical blade, an electrotome, or a laser fiber optic device, or a combination thereof.

10. The medical device according to claim 9, wherein when the working device is a biopsy forceps, the actuator has at least two gripping portions and a fixing portion, the two gripping portions being connected to the fixing portion, the fixing portion being connected to the line portion.