Injection assembly and endoscope

Abstract

The present invention relates to the field of medical device technology, and discloses an injection assembly and an endoscope. The injection assembly includes: an insertion portion extending from the proximal end to the distal end, having a suction channel and an injection channel; the injection channel is used to guide the medicine to move from the proximal end of the injection channel to the distal end of the injection channel for discharge; an injection structure used to puncture human tissue, including a plurality of first injection needles; the plurality of first injection needles are arranged at the distal end of the insertion portion and connected to the injection channel; a marking tube extending from the proximal end to the distal end and arranged in the suction channel; the marking tube has an injection channel for guiding the dye to move from the proximal end of the injection channel to the distal end of the injection channel for discharge. The endoscope includes an endoscope handle, an injection portion and an injection assembly. Through the above technical solution, the present invention can solve the technical problem of multiple injections in a certain area in the related art of uterine end wall injection.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an injection assembly and an endoscope. Background Art

[0002] Endoscopes are commonly used medical devices that allow direct access to the body's natural channels, providing doctors with comprehensive diagnostic information for treating diseases. However, existing endoscopic procedures for injecting medications into the uterine lining can lead to multiple injections in the same area.

[0003] Therefore, providing an injection assembly and an endoscope that can mark the injection point is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The present invention discloses an injection assembly and an endoscope, which are used to solve the technical problem of multiple injections in a certain area in the related art of uterine inner wall injection.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] In a first aspect, an injection assembly is disclosed, comprising:

[0007] The insertion portion extends from the proximal end to the distal end and has a suction channel and a drug injection channel; the drug injection channel is used to guide the drug to move from the proximal end of the drug injection channel to the distal end of the drug injection channel for discharge;

[0008] The injection structure is used to puncture human tissue and includes a plurality of first injection needles; the plurality of first injection needles are arranged at the distal end of the insertion portion and are connected to the injection channel;

[0009] The marking tube extends from the proximal end to the distal end and is disposed in the suction channel; the marking tube has an injection channel for guiding the dye to move from the proximal end of the injection channel to the distal end of the injection channel for discharge;

[0010] The distal end of the marking tube does not exceed the distal end of the first injection needle.

[0011] In some embodiments, the distal end of the marker tube is located within the suction channel, and the proximal end of the suction channel is used to connect to a negative pressure device.

[0012] In some embodiments, there are at least two first injection needles, which are evenly arranged along the circumference of the insertion portion; the distal end of the marking tube is fixedly arranged on the inner wall of the suction channel close to the axis of the insertion portion;

[0013] And / or, the distal end of the marker tube has an oblique cut, and the oblique cut is inclined from one side of the marker tube fixed to the suction channel to the other side in the radial direction of the marker tube toward the proximal end of the marker tube.

[0014] In some embodiments, the injection structure further includes a plurality of second injection needles; the plurality of second injection needles are disposed at the distal end of the insertion portion and communicate with the drug injection channel;

[0015] The distal end of any one of the first injection needle and the second injection needle is located outside the distal end of the other one.

[0016] In some aspects, the plurality of first injection needles and / or the plurality of second injection needles are configured to have an expanded state and a collapsed state;

[0017] When in the expanded state, the distal ends of the first injection needles and / or the distal ends of the second injection needles are located radially outside the insertion portion;

[0018] When in the retracted state, the distal ends of the first injection needles and / or the distal ends of the second injection needles are located radially inward of the insertion portion;

[0019] The plurality of first injection needles and / or the plurality of second injection needles may be switched between an expanded state and a collapsed state.

[0020] In some embodiments, the plurality of first injection needles and / or the plurality of second injection needles are slidably disposed in the drug injection channel, and as the plurality of first injection needles and / or the plurality of second injection needles slide, the plurality of first injection needles and / or the plurality of second injection needles are switched between an expanded state and a retracted state;

[0021] When in the expanded state, the distal ends of the plurality of first injection needles and / or the distal ends of the plurality of second injection needles are located outside the distal end of the drug injection channel;

[0022] When in the retracted state, the distal ends of the plurality of first injection needles and / or the distal ends of the plurality of second injection needles are located in the drug injection channel.

[0023] In some embodiments, the drug injection channel includes a delivery channel and a distribution channel; the distal end of the delivery channel is connected to the distribution channel, and the distal end of the distribution channel is connected to a plurality of first injection needles and a plurality of second injection needles, for evenly distributing the drug to all the first injection needles and all the second injection needles;

[0024] Alternatively, the plurality of first injection needles and the plurality of second injection needles are connected to the drug injection channel through injection tubes respectively.

[0025] In some embodiments, the insertion portion includes an insertion tube and a medicine sheath; the medicine sheath is disposed at the distal end of the insertion tube;

[0026] The distribution channel is arranged in the medicine sheath, and the delivery channel is arranged in the insertion tube and / or the medicine sheath;

[0027] The suction channel is arranged in the insertion tube.

[0028] In a second aspect, an endoscope is disclosed, comprising an endoscope handle, an injection portion, and the injection assembly of the first aspect;

[0029] The injection part is arranged on the instrument mouth of the endoscope handle. The proximal end of the insertion part and the proximal end of the marking tube extend into the endoscope handle and are connected to the injection part. The injection part is used to deliver medicine to the injection channel and deliver dye to the injection channel.

[0030] In some embodiments, the injection portion includes a syringe and a piston; the syringe has two chambers, one of which is used to place a drug and is connected to the drug injection channel, and the other is used to place a dye and is connected to the injection channel; the piston is used to drive the drug into the drug injection channel and drive the dye into the injection channel;

[0031] And / or, the injection portion is slidably connected to the instrument mouth to drive the injection structure to move axially along the drug injection channel.

[0032] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0033] During injection, the injection assembly of the present application uses a plurality of first injection needles to puncture human tissue. The drug then moves through the injection channel from the proximal end to the distal end of the injection channel, entering the human tissue through the plurality of first injection needles. During the injection process, the dye moves from the proximal end of the injection channel to the distal end and is discharged, marking the human tissue. During multiple injections, the doctor can observe the marked locations on the tissue to determine whether an injection has been performed there, thereby avoiding the problem of multiple injections in a single area. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 is an axonometric view of the endoscope of the present invention;

[0036] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0037] Figure 3 Is the axonometric view of the injection assembly of the present invention Figure 1 ;

[0038] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0039] Figure 5 Is the axonometric view of the injection assembly of the present invention Figure 2 ;

[0040] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0041] Figure 7 is a cross-sectional view of the endoscope of the present invention;

[0042] Figure 8 yes Figure 7 Enlarged view of point D in the middle;

[0043] Figure 9 is a cross-sectional view of the injection assembly of the present invention Figure 1 ;

[0044] Figure 10 yes Figure 9 Enlarged view of point E in the middle;

[0045] Figure 11 is a cross-sectional view of the injection assembly of the present invention Figure 2 ;

[0046] Figure 12 yes Figure 11 Enlarged view of point F in the middle;

[0047] Figure 13 Is the axonometric view of the injection assembly of the present invention Figure 3 ;

[0048] Figure 14 It is a cross-sectional view of the injection portion of the present invention.

[0049] In the picture:

[0050] 100 - injection assembly, 110 - insertion portion, 111 - insertion tube, 112 - medicine sheath, 120 - injection structure, 121 - first injection needle, 122 - second injection needle, 130 - suction channel, 140 - injection channel, 141 - delivery channel, 142 - distribution channel, 150 - marking tube, 151 - oblique cut, 152 - injection channel, 160 - injection tube;

[0051] 200 - endoscope, 210 - endoscope handle, 220 - injection part, 221 - syringe, 222 - piston, 223 - chamber. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0053] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0054] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0055] The inventors discovered that during existing uterine lining injection procedures using endoscope 200, inexperienced surgeons may repeat injections due to unfamiliarity with the procedure, while experienced surgeons may also experience similar issues due to fatigue or distraction. Furthermore, the uterine lining tissues appear similar and lack distinct markings, making it difficult for surgeons to accurately distinguish between injected and uninjected areas. This increases the risk of repeated injections and can lead to multiple injections in the same area.

[0056] The following is combined with Figures 1 to 14 , an injection assembly 100 and an endoscope 200 provided in this application are described in detail through specific embodiments and their application scenarios.

[0057] Some embodiments of the present application disclose an injection assembly 100, such as Figure 2 、 Figure 8 and Figure 12 As shown, it includes an inserting portion 110 , an injection structure 120 and a marking tube 150 .

[0058] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 9 、 Figure 11 and Figure 13As shown, the insertion portion 110 extends from the proximal end to the distal end to form a slender tubular structure, so that it can be smoothly inserted into the human body cavity.

[0059] like Figure 2 、 Figure 6 、 Figure 8 and Figure 10 As shown, the injection structure 120 includes a plurality of first injection needles 121 for piercing human tissue.

[0060] like Figure 4 and Figure 9 As shown, the insertion portion 110 has an injection channel 140, and a plurality of first injection needles 121 are disposed at the distal end of the insertion portion 110 and communicate with the injection channel 140. During surgery, the insertion portion 110 is inserted into a human body cavity, and the plurality of first injection needles 121 puncture human tissue. The injection channel 140 guides the medication from the proximal end of the injection channel 140 to the distal end of the injection channel 140 for discharge, and then enters the human tissue through the plurality of first injection needles 121.

[0061] In this embodiment, the cross-sections of the first injection needles 121 may be circular, elliptical, polygonal, or other shapes. This embodiment may be flexibly configured according to usage requirements and is not limited thereto.

[0062] It should be noted that the human cavity in this embodiment refers to the vagina, and the human tissue refers to the inner wall of the uterus, and the same applies hereinafter.

[0063] like Figure 2 、 Figure 4 、 Figure 6 and Figures 8-13 As shown, the insertion portion 110 further comprises a suction channel 130. A marking tube 150 is disposed within the suction channel 130 and extends from the proximal end to the distal end. The marking tube 150 also includes an injection channel 152. During surgery, the insertion portion 110 is inserted into a human body cavity. The dye moves from the proximal end of the injection channel 152 to the distal end of the injection channel 152, where it is discharged and marks the tissue. During the injection process, the doctor can observe the presence of the marking in the area to determine whether the injection has been performed. This allows the doctor to accurately distinguish between injected and uninjected areas, preventing duplicate injections.

[0064] like Figure 8 、 Figure 10 and Figure 12As shown, the distal end of the marking tube 150 does not extend beyond the distal end of the first injection needles 121. During surgery, the insertion portion 110 is inserted into a human cavity, and the first injection needles 121 puncture human tissue. Because the distal end of the marking tube 150 does not extend beyond the distal end of the first injection needles 121, the marking tube 150 is prevented from pressing against the human tissue, preventing the first injection needles 121 from successfully puncturing the tissue.

[0065] like Figure 8 、 Figure 10 and Figure 12 As shown, the distal end of the marking tube 150 is located in the suction channel 130, and the proximal end of the suction channel 130 is used to connect to the negative pressure device. During the operation, the insertion portion 110 is inserted into the human tissue, and the negative pressure device operates in the suction channel 130 to form a negative pressure, which attracts and gathers the human tissue in the area into the suction channel 130. First, the human tissue around the center of the injection area can be tightened to improve puncture efficiency; second, the negative pressure can also draw away excess dye, preventing excessive dye from spreading in the human tissue in the injection area, resulting in the doctor being unable to observe the center of the injection area; third, because human tissue is relaxed, the negative pressure can attract and gather the human tissue in the suction channel 130. After the first injection needle 121 completes the injection and the negative pressure disappears, the human tissue will return to its original state, thereby expanding a wider injection area.

[0066] It should be noted that the negative pressure equipment can be manually controlled to generate or eliminate negative pressure.

[0067] like Figure 2 、 Figure 6 、 Figure 8 and Figure 10 As shown, there are at least two first injection needles 121, which are evenly arranged along the circumference of the insertion portion 110. Multiple injection needles working simultaneously can significantly shorten the injection time and improve the overall injection efficiency.

[0068] like Figure 8 、 Figure 10 and Figure 12As shown, the distal end of the marking tube 150 is fixedly mounted on the inner wall of the suction channel 130 near the axis of the insertion portion 110. It should be noted that when the injection assembly 100 is used in an endoscope 200, a camera module will be integrated at the distal end of the insertion portion 110. To facilitate the installation of the camera module, the suction channel 130 needs to be eccentrically mounted relative to the insertion portion 110. Therefore, by fixing the distal end of the marking tube 150 on the inner wall of the suction channel 130 near the axis of the insertion portion 110, the marking tube 150 can be positioned as close to the axis of the insertion portion 110 as possible, thereby allowing the marking tube 150 to mark the center of the injection area as closely as possible during the process of marking human tissue.

[0069] and / or, such as Figure 8 、 Figure 10 and Figure 12 As shown, the distal end of the marking tube 150 has an oblique cutout 151. The oblique cutout 151 slopes from one side where the marking tube 150 is fixed to the suction channel 130, toward the other radial side of the marking tube 150, toward the proximal end of the marking tube 150. The oblique cutout 151 increases the contact area between the marking tube 150 and the human tissue when the human tissue is drawn and collected within the suction channel 130, thereby better marking the injection area.

[0070] like Figure 2 and Figure 8 As shown, the injection structure 120 further includes a plurality of second injection needles 122 , which have the same function as the plurality of first injection needles 121 and are all used to puncture human tissue.

[0071] like Figure 2 and Figure 8 As shown, a plurality of second injection needles 122 are disposed at the distal end of the insertion portion 110 and communicate with the injection channel 140. During surgery, the insertion portion 110 is inserted into a human body cavity, and the plurality of second injection needles 122 puncture human tissue. The injection channel 140 guides the medication from the proximal end of the injection channel 140 to the distal end of the injection channel 140 for discharge, and then enters the human tissue through the plurality of second injection needles 122.

[0072] like Figure 2 As shown, the distal end of any one of the first injection needle 121 and the second injection needle 122 is located outside the distal end of all other needles. The plurality of first injection needles 121 and the plurality of second injection needles 122 form two injection layers with different diameters, allowing the drug to cover a wider area faster, thereby improving injection efficiency.

[0073] In some embodiments, the second injection needle 122 is located outside the first injection needle 121 .

[0074] In some embodiments, the first injection needle 121 is located outside the second injection needle 122 .

[0075] like Figure 2 and Figure 12 As shown, the plurality of first injection needles 121 and / or the plurality of second injection needles 122 are configured to have an extended state and a retracted state. In the extended state, the distal ends of the plurality of first injection needles 121 and / or the plurality of second injection needles 122 are located radially outward from the insertion portion 110; in the retracted state, the distal ends of the plurality of first injection needles 121 and / or the plurality of second injection needles 122 are located radially inward from the insertion portion 110. The plurality of first injection needles 121 and / or the plurality of second injection needles 122 can switch between the extended state and the retracted state.

[0076] When in the retracted state, the distal ends of the first injection needles 121 and / or the distal ends of the second injection needles 122 are located radially inward of the insertion portion 110, thereby minimizing the diameter of the first injection needles 121 and / or the second injection needles 122, allowing the insertion portion 110 to be smoothly inserted into the human body cavity. After the insertion portion 110 reaches the injection area, the first injection needles 121 and / or the second injection needles 122 are switched to the deployed state, with the distal ends of the first injection needles 121 and / or the second injection needles 122 located radially outward of the insertion portion 110, thereby increasing the diameter of the distal ends of the first injection needles 121 and / or the second injection needles 122, thereby expanding the injection range.

[0077] In some embodiments, in the expanded state, the distal ends of the plurality of first injection needles 121 are located radially inside the insertion portion 110 , and the distal ends of the plurality of second injection needles 122 are located radially outside the insertion portion 110 .

[0078] In some embodiments, in the expanded state, the distal ends of the plurality of second injection needles 122 are located radially inside the insertion portion 110 , and the distal ends of the plurality of first injection needles 121 are located radially outside the insertion portion 110 .

[0079] In some embodiments, in the expanded state, the distal ends of the plurality of second injection needles 122 and the distal ends of the plurality of first injection needles 121 are both located radially outside the insertion portion 110 .

[0080] like Figure 2 and Figure 12As shown, the plurality of first injection needles 121 and / or the plurality of second injection needles 122 are slidably disposed in the injection channel 140. As the plurality of first injection needles 121 and / or the plurality of second injection needles 122 slide, the plurality of first injection needles 121 and / or the plurality of second injection needles 122 switch between an extended state and a retracted state. In the extended state, the distal ends of the plurality of first injection needles 121 and / or the distal ends of the plurality of second injection needles 122 are located outside the distal end of the injection channel 140; in the retracted state, the distal ends of the plurality of first injection needles 121 and / or the distal ends of the plurality of second injection needles 122 are located inside the injection channel 140.

[0081] When in the retracted state, the distal ends of the first injection needles 121 and / or the distal ends of the second injection needles 122 are located within the injection channel 140. This prevents the first injection needles 121 and / or the second injection needles 122 from causing damage to human tissue during insertion of the insertion portion 110 into a human body cavity. After the insertion portion 110 reaches the injection area, the first injection needles 121 and / or the second injection needles 122 move toward the distal end of the insertion portion 110, allowing the distal ends of the first injection needles 121 and / or the second injection needles 122 to move to the outside of the distal end of the injection channel 140, thereby puncturing human tissue.

[0082] It should be noted that the first injection needle 121 and / or the second injection needle 122 are elastic. When the first injection needle 121 and / or the second injection needle 122 are in the retracted state, they deform and store elastic potential energy. When the first injection needle 121 and / or the second injection needle 122 move to the outside of the distal end of the injection channel 140, the first injection needle 121 and / or the second injection needle 122 recover their deformation, switching to the deployed state. This positions the distal ends of the first injection needle 121 and / or the distal ends of the second injection needle 122 radially outward from the insertion portion 110, thereby enabling injection into the injection area.

[0083] In some embodiments, a plurality of first injection needles 121 are slidably disposed in the drug injection channel 140 .

[0084] In some embodiments, a plurality of second injection needles 122 are slidably disposed in the drug injection channel 140 .

[0085] In some embodiments, a plurality of first injection needles 121 and a plurality of second injection needles 122 are slidably disposed in the drug injection channel 140 .

[0086] like Figure 9As shown, the injection channel 140 includes a delivery channel 141 and a distribution channel 142. The distal end of the delivery channel 141 is connected to the distribution channel 142. The proximal end of the delivery channel 141 is used to connect to the source of the medicine, and the medicine can enter the distribution channel 142 through the delivery channel 141.

[0087] like Figure 9 and Figure 10 As shown, the distal end of the distribution channel 142 is connected to a plurality of first injection needles 121 and a plurality of second injection needles 122, thereby evenly distributing the drug to all of the first injection needles 121 and all of the second injection needles 122. Drug entering through the delivery channel 141 flows into the distribution channel 142 and is ultimately discharged through the first and second injection needles 121, 122. The provision of the distribution channel 142 ensures that all of the first and second injection needles 121, 122 receive the same dose of drug, avoiding the problem of uneven dosage and ensuring that the same dose is delivered to each injection portion 220 of the injection structure 120 during the injection process.

[0088] In this embodiment, the distribution channel 142 is an annular channel, thereby allowing all first injection needles 121 and all second injection needles 122 to receive the same dose of the drug. The number of delivery channels 141 can be one, two, three, or more, and can be flexibly configured according to actual usage requirements, which is not limited in this embodiment.

[0089] In this embodiment, the plurality of first injection needles 121 and / or the plurality of second injection needles 122 are slidably disposed in the distribution channel 142. In the retracted state, the distal ends of the plurality of first injection needles 121 and / or the distal ends of the plurality of second injection needles 122 are located within the distribution channel 142; in the extended state, the distal ends of the plurality of first injection needles 121 and / or the distal ends of the plurality of second injection needles 122 are located outside the distribution channel 142.

[0090] Or, as Figure 12 and Figure 13 As shown, the plurality of first injection needles 121 and the plurality of second injection needles 122 are connected to the injection channel 140 via injection tubes 160. The proximal ends of the injection tubes 160 are connected to a source of medication. The medication can enter the plurality of first injection needles 121 and the plurality of second injection needles 122 through the plurality of injection tubes 160 and be discharged from the plurality of first injection needles 121 and the plurality of second injection needles 122. By assigning each of the plurality of first injection needles 121 and the plurality of second injection needles 122 to a corresponding injection tube 160, the same dose of medication can be ensured for all first injection needles 121 and all second injection needles 122, thus avoiding the problem of uneven dosage and ensuring that the same dose is delivered at each injection portion 220 of the injection structure 120 during the injection process.

[0091] In this embodiment, at least a portion of the injection tube 160 can move axially along the injection channel 152, thereby driving several first injection needles 121 and / or several second injection needles 122 to move in the injection channel 152, so that several first injection needles 121 and / or several second injection needles 122 switch between the expanded state and the retracted state.

[0092] like Figure 9 and Figure 10 As shown, the insertion portion 110 includes an insertion tube 111 and a medicine sheath 112, which is sheathed at the distal end of the insertion tube 111. In this embodiment, a plurality of first injection needles 121 and a plurality of second injection needles 122 are disposed at the distal end of the medicine sheath 112, and a suction channel 130 is disposed within the insertion tube 111.

[0093] like Figure 9 and Figure 10 As shown, the distribution channel 142 is disposed within the medicine sheath 112, and the delivery channel 141 is disposed within the insertion tube 111 and / or the medicine sheath 112. Because the distribution channel 142 is an annular channel and the distal end of the insertion tube 111 is also integrated with a camera module, it is difficult to machine an annular channel within the insertion tube 111. This embodiment, by directly placing the medicine sheath 112 over the distal end of the insertion tube 111, fabricating an annular channel directly on the medicine sheath 112 is much easier than machining it on the insertion tube 111 with the integrated camera module, thereby reducing the machining difficulty.

[0094] In some embodiments, the delivery channel 141 is disposed within the insertion tube 111 .

[0095] In some embodiments, the delivery channel 141 is disposed within the sheath 112 .

[0096] Some embodiments of the present application also disclose an endoscope 200, such as Figure 1 、 Figure 7 and Figure 14 As shown, it includes an endoscope handle 210, an injection part 220 and an injection assembly 100.

[0097] like Figure 1 and Figure 7As shown, the injection unit 220 is mounted on the instrument nozzle of the endoscope handle 210. The proximal ends of the insertion unit 110 and the marking tube 150 extend into the endoscope handle 210 and communicate with the injection unit 220. The injection unit 220 is used to deliver medication to the injection channel 140 and dye to the injection channel 152. During surgery, the insertion unit 110 is inserted into a body cavity, allowing the first and second injection needles 121, 122 to puncture human tissue. The injection unit 220 delivers medication to the injection channel 140, allowing the medication to enter the tissue through the first and second injection needles 121, 122. During surgery, the negative pressure device operates to generate negative pressure within the suction channel 130, drawing tissue in the area into the suction channel 130. The injection unit 220 delivers dye to the injection channel 152, allowing the marking tube 150 to mark the injection area.

[0098] like Figure 7 and Figure 14 As shown, the injection unit 220 includes a syringe 221 and a piston 222. The syringe 221 has two chambers 223, one of which is used to store medicine and is connected to the injection channel 140, and the other chamber 223 is used to store dye and is connected to the injection channel 152. By providing two chambers 223 in the syringe 221, the medicine and dye can be stored simultaneously, eliminating the need for two syringes 221, thus saving space.

[0099] In this embodiment, two chambers 223 are separated in the syringe 221 by a partition.

[0100] like Figure 7 and Figure 14 As shown, the piston 222 is used to drive the medicine into the injection channel 140 and the dye into the injection channel 152. During the operation, the first injection needle 121 and the second injection needle 122 pierce the human tissue. When the human tissue in the injection area is attracted and gathered in the suction channel 130, by pressing the piston 222, the medicine can be driven into the injection channel 140 and the dye into the injection channel 152, and finally the medicine enters the human tissue and the dye is marked on the surface of the human tissue.

[0101] In some embodiments, there is one piston 222. When the piston 222 is pressed, the dye enters the injection channel 152 and the medicine also enters the injection channel 140.

[0102] In some embodiments, there are two pistons 222, each corresponding to a chamber 223. When a drug needs to be injected, the corresponding piston 222 is pressed; when a dye needs to be injected, the corresponding piston 222 is pressed; when a drug and a dye need to be injected simultaneously, both are pressed simultaneously.

[0103] and / or, such as Figure 7As shown, the injection part 220 is slidably connected to the instrument mouth and is used to drive the injection structure 120 to move axially along the injection channel 140. By moving the injection part 220, the first injection needle 121 and / or the plurality of second injection needles 122 are driven to switch between the expanded state and the retracted state.

[0104] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0105] Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in reverse order depending on the functions involved. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0106] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. An injection assembly, characterized in that: include: An insertion portion, extending from a proximal end to a distal end, having a suction channel and a drug injection channel; The injection channel is used to guide the medicine to move from the proximal end of the injection channel to the distal end of the injection channel for discharge, and the proximal end of the suction channel is used to connect to a negative pressure device; An injection structure, used for puncturing human tissue, comprising a plurality of first injection needles; the first injection needles are arranged at the distal end of the insertion portion and communicated with the drug injection channel; a marking tube extending from a proximal end to a distal end and disposed in the suction channel, wherein the distal end of the marking tube is located in the suction channel for contacting a surface of human tissue; The marking tube has an injection channel for guiding the dye to move from the proximal end of the injection channel to the distal end of the injection channel and be discharged to mark the surface of human tissue; Wherein, the distal end of the marking tube does not exceed the distal end of the first injection needle.

2. An injection assembly according to claim 1, characterized in that: There are at least two first injection needles, which are evenly arranged along the circumference of the insertion portion; the distal end of the marking tube is fixedly arranged on the inner wall of the suction channel close to the axis of the insertion portion; And / or, the distal end of the marking tube has an oblique cut, and the oblique cut is inclined from one side where the marking tube is fixed to the suction channel to the other side in the radial direction of the marking tube toward the proximal end of the marking tube.

3. An injection assembly according to claim 1, characterized in that: The injection structure further includes a plurality of second injection needles; the plurality of second injection needles are arranged at the distal end of the insertion portion and communicate with the drug injection channel; Wherein, the distal end of any one of the first injection needle and the second injection needle is located outside the distal end of the other one.

4. An injection assembly according to claim 3, characterized in that: The plurality of first injection needles and / or the plurality of second injection needles are configured to have an expanded state and a collapsed state; When in the expanded state, the distal ends of the first injection needles and / or the distal ends of the second injection needles are located radially outside the insertion portion; When in the retracted state, the distal ends of the first injection needles and the distal ends of the second injection needles are located radially inward of the insertion portion; The first injection needles and / or the second injection needles may be switched between the expanded state and the collapsed state.

5. An injection assembly according to claim 4, characterized in that: The plurality of first injection needles and / or the plurality of second injection needles are slidably disposed in the drug injection channel, and as the plurality of first injection needles and / or the plurality of second injection needles slide, the plurality of first injection needles and / or the plurality of second injection needles are switched between the deployed state and the retracted state; When in the expanded state, the distal ends of the plurality of first injection needles and / or the distal ends of the plurality of second injection needles are located outside the distal end of the drug injection channel; When in the retracted state, the distal ends of the first injection needles and / or the distal ends of the second injection needles are located in the drug injection channel.

6. An injection assembly according to claim 5, characterized in that: The drug injection channel includes a delivery channel and a distribution channel; the distal end of the delivery channel is connected to the distribution channel, and the distal end of the distribution channel is connected to a plurality of the first injection needles and a plurality of the second injection needles, for evenly distributing the drug to all the first injection needles and all the second injection needles; Alternatively, a plurality of the first injection needles and a plurality of the second injection needles are connected to the drug injection channel through injection tubes respectively.

7. An injection assembly according to claim 6, characterized in that: The insertion portion includes an insertion tube and a medicine sheath; the medicine sheath is arranged at the distal end of the insertion tube; The distribution channel is arranged in the medicine sheath, and the delivery channel is arranged in the insertion tube and / or the medicine sheath; Wherein, the suction channel is arranged in the insertion tube.

8. An endoscope, characterized in that: comprising an endoscope handle, an injection portion and the injection assembly according to any one of claims 1 to 7; The injection part is arranged on the instrument mouth of the endoscope handle, and the proximal end of the insertion part and the proximal end of the marking tube extend into the endoscope handle and are connected to the injection part; the injection part is used to deliver medicine to the injection channel and deliver dye to the injection channel.

9. An endoscope according to claim 8, characterized in that: The injection unit includes a syringe and a piston; the syringe has two chambers, one of which is used to hold medicine and is connected to the injection channel, and the other is used to hold dye and is connected to the injection channel; the piston is used to drive the medicine into the injection channel and drive the dye into the injection channel; And / or, the injection portion is slidably connected to the instrument mouth to drive the injection structure to move axially along the drug injection channel.

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