An injection structure, an insertion component, and an endoscope

Abstract

The present invention relates to the technical field of medical devices, and discloses an injection structure, an insertion assembly, and an endoscope. The injection structure includes: an injection tube having an injection channel; the injection channel is used to guide the injection agent to move from the proximal end of the injection channel to the distal end of the injection channel for discharge; a sharp portion is provided on the injection tube and is connected to the distal end of the injection channel; a driving portion is used to drive the sharp portion to puncture radially outward along the injection tube. The insertion assembly includes an insertion tube and the injection structure, and the injection tube is located in the instrument channel of the insertion tube and can be controllably moved along the axial direction of the instrument channel. The endoscope includes an endoscope handle, a syringe, and the insertion assembly, and the injection end of the syringe is connected to the instrument nozzle of the endoscope handle; the proximal end of the injection tube extends into the endoscope handle and is communicated with the injection end of the syringe. The present invention can solve the technical problem that the puncture path of the needle in the syringe in the related art is relatively long and the damage to the tissue is relatively large.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an injection structure, an insertion component and an endoscope. Background Art

[0002] An injection agent is used to treat women with stress urinary incontinence. The injection agent can be injected into the tissues around the bladder neck and the proximal urethra through the urethra or around the urethra, so as to support the bladder neck and the proximal urethra.

[0003] Currently, during the process of injecting the injection agent, the insertion part is first inserted into the urethra to make the part of the urethra to be injected bulge. Then, medical staff insert the needle of the syringe from the outside into the bulged part of the urethra, which causes relatively great harm to the tissue.

[0004] Therefore, providing an injection structure, an insertion component and an endoscope with a short puncture path is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] The present invention discloses an insertion component and an endoscope handle to solve the technical problem that the needle of the syringe in the related art has a relatively long puncture path and causes relatively great harm to the tissue.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] In a first aspect, an injection structure is disclosed, including:

[0008] An injection tube extending from a proximal end to a distal end, having an injection channel; the injection channel is used to guide the injection agent to move from the proximal end of the injection channel to the distal end of the injection channel and be discharged;

[0009] A sharp part disposed on the injection tube and connected to the distal end of the injection channel; the sharp part is used to puncture human tissue to guide the injection agent into the human tissue;

[0010] A driving part for driving the sharp part to move radially outward along the injection tube to puncture human tissue.

[0011] In some solutions, the distal end of the injection tube corresponding to the injection channel is a moving part, and the sharp part is disposed on the moving part;

[0012] The moving part can move radially outward along the injection tube under the drive of the driving part, so that the sharp part can puncture human tissue.

[0013] In some solutions, the injection tube includes a first injection part, a second injection part and a traction part that are rotatably connected in sequence from the proximal end to the distal end;

[0014] The injection channel extends from the first injection part to the second injection part;

[0015] The sharp part is connected to the distal end of the second injection part;

[0016] The driving part is used to drive the distal end of the traction part to move towards the proximal end of the injection tube, so that the distal end of the second injection part drives the sharp part to move radially towards the outside of the injection tube along the injection tube.

[0017] In some solutions, a groove is provided at the proximal end of the traction part, and the groove extends axially along the traction part towards the distal end of the traction part;

[0018] During the process that the distal end of the second injection part drives the sharp part to move radially towards the outside of the injection tube along the injection tube, the sharp part leaves the groove.

[0019] In some solutions, a shielding part is provided at the distal end of the second injection part, and the shielding part extends axially along the second injection part towards the distal end;

[0020] The rotational connection part between the second injection part and the traction part on the side corresponding to the groove where the sharp part leaves is covered by the shielding part.

[0021] In some solutions, the distal end of the shielding part has a bent part;

[0022] When the bent part abuts against the traction part, an included angle is formed between the side of the second injection part radially away from the shielding part and the side of the traction part radially away from the shielding part.

[0023] In a second aspect, an insertion assembly is disclosed, which includes an insertion tube and the injection structure of the first aspect;

[0024] The injection tube is located in the instrument channel of the insertion tube and can be controllably moved axially along the instrument channel; the sharp part can move to the outside of the distal end of the instrument channel.

[0025] In some solutions, the insertion assembly includes a camera module;

[0026] The camera module is arranged at the distal end of the insertion tube, or the camera module is arranged at the distal end of the injection tube.

[0027] In a third aspect, an endoscope is disclosed, which includes an endoscope handle, a syringe and the insertion assembly of the second aspect;

[0028] The injection end of the syringe is connected to the instrument nozzle of the endoscope handle; the proximal end of the injection tube extends into the endoscope handle and is communicated with the injection end of the syringe.

[0029] In some solutions, the proximal end of the driving part is connected to the top of the piston end of the syringe; during the process that the piston end of the syringe moves towards the instrument nozzle, the distal end of the driving part makes the sharp end of the needle move towards one side;

[0030] And / or, the injection end of the syringe is connected to the instrument nozzle through a connector, and the proximal end of the injection tube is connected to the distal end of the connector; the connector can move axially along the instrument nozzle, driving the injection tube to move within the instrument channel.

[0031] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0032] In the injection structure of the present application, during the injection process, the distal end of the injection tube is first inserted into the patient's body cavity. When the injection tube reaches the injection site, the driving part controls the sharp part to move towards the inner wall of the body cavity and pierce into the human tissue. The injection agent is transported from the injection tube to the sharp part through the injection channel and finally enters the human tissue. Since the insertion assembly of the present application directly performs the injection within the body cavity, the needle puncture path is short and the damage to the tissue is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 is the axonometric view of the endoscope of the present invention;

[0035] Figure 2 is Figure 1 the enlarged view of part A in

[0036] Figure 3 is Figure 1 the enlarged view of part B in

[0037] Figure 4 is Figure 3 the enlarged view of part C in

[0038] Figure 5 is the axonometric view of the insertion assembly of the present invention Figure 1 ;

[0039] Figure 6 is the axonometric view of the insertion assembly of the present invention Figure 2 ;

[0040] Figure 7 is the axonometric view of the injection structure of the present invention Figure 1 ;

[0041] Figure 8 is the axonometric view of the injection structure of the present invention Figure 2 ;

[0042] Figure 9Is the axonometric view of the injection structure of the present invention Figure 3 ;

[0043] Figure 10 Is the axonometric view of the hidden part of the endoscope handle housing and the instrument nozzle of the present invention;

[0044] Figure 11 Is Figure 10 The enlarged view at position D in

[0045] Figure 12 Is Figure 11 The enlarged view at position E in

[0046] Figure 13 Is the schematic diagram of the injection structure of the present invention.

[0047] In the figure:

[0048] 100 - injection structure, 110 - injection tube, 111 - first injection part, 1111 - guiding part, 112 - second injection part, 113 - traction part, 1131 - annular groove, 114 - shielding part, 1141 - bending part, 115 - groove, 116 - hose, 120 - insertion tube, 121 - instrument channel, 130 - sharp part, 140 - camera module;

[0049] 200 - endoscope handle, 201 - instrument nozzle, 210 - syringe, 211 - fixed pulley, 220 - driving part, 230 - joint, 240 - sleeve. Detailed implementation mode

[0050] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0051] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0052] In various embodiments of the present application, "proximal end" and "distal end" refer to the relative distances of various components from the user in the usage environment. Specifically, 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".

[0053] The inventors found during the surgery for treating urodynamic stress urinary incontinence combined with internal sphincter deficiency that during the existing process of injecting the injection agent, the insertion part is first inserted into the urethra to make the part of the urethra to be injected bulge. Then, the medical staff inserts the sharp part 130 of the syringe 210 from the outside into the bulging part of the urethra and completes the injection. When the syringe 210 is inserted from the outside into the bulging part of the urethra, the puncture path of the sharp part 130 is relatively long, causing relatively great harm to the tissue.

[0054] The following combines the attached Figures 1 to 13 drawings to elaborate in detail on an injection structure 100, an insertion component, and an endoscope provided by the present application through specific embodiments and their application scenarios.

[0055] Some embodiments of the present application provide an injection structure 100, as Figures 7 - 9 shown, including an injection tube 110, a sharp part 130, and a driving part 220.

[0056] As Figures 7 - 9 shown, the injection tube 110 extends from the proximal end to the distal end and has an injection channel. The injection tube 110 has a certain length. When the distal end of the injection tube 110 is inserted into the patient's body cavity and reaches the position of the injection structure 100, the proximal end of the injection tube 110 is located outside the body cavity to facilitate the operation of the injection tube 110. The injection channel is used to guide the injection agent to move from the proximal end of the injection channel to the distal end of the injection channel and be discharged.

[0057] It should be noted that the body cavity in this embodiment refers to the urethra, and the urethra is used for illustration hereinafter.

[0058] As Figures 7 - 9 shown, the sharp part 130 is arranged on the injection tube 110 and is connected to the distal end of the injection channel. The sharp part 130 is used to puncture human tissue. During the injection process, the sharp part 130 pierces into the human tissue, and the injection agent is transported from the injection tube 110 to the sharp part 130 through the injection channel and finally enters the human tissue.

[0059] It should be noted that the filling material can be substances such as collagen, carbon particles, and autologous fat.

[0060] In some embodiments, as Figure 7 shown, the proximal end and the distal end of the sharp part 130 are coaxial.

[0061] In some embodiments, as Figure 2As shown, the distal end of the sharp portion 130 is bent toward the proximal end of the insertion tube 120.

[0062] As Figure 2 and Figures 6 - 9 shown, the driving portion 220 is used to drive the sharp portion 130 to puncture outward along the radial direction of the injection tube 110 toward the outside of the injection tube 110.

[0063] During the process of inserting the injection tube 110 into the urethra, the sharp portion 130 is parallel to the axis of the injection tube 110 or hidden inside the injection tube 110 to avoid unnecessary harm to the patient caused by the sharp portion 130. During the injection process, the driving portion 220 controls the sharp portion 130 to move toward the inner wall of the urethra, so that the sharp portion 130 penetrates the inner wall of the urethra, and then an injection agent is injected into the injection structure 100 of the urethra through the injection channel. The injection method of directly piercing the inner wall of the urethra with the sharp portion 130 can greatly reduce the puncture path of the sharp portion 130 to reduce the harm to tissues.

[0064] Correspondingly, after the injection is completed, a part of the sharp portion 130 at the distal end of the corresponding injection channel rotates in the opposite direction to return to the initial state, so that the sharp portion 130 is separated from the inner wall of the urethra, and then the insertion tube 120 can be withdrawn from the urethra.

[0065] Secondly, in the prior art, the injection method of inserting from the outside to the raised part of the urethra requires an asymmetric offset nose at the distal end of the insertion part to raise the injection structure 100 of the urethra through the asymmetric offset nose. However, the size of the asymmetric offset nose is larger than the size of the insertion part, which will increase the discomfort of the patient when inserting into the urethra. In this embodiment, the injection tube 110 is moved toward the inner wall of the body cavity after entering the urethra, which can reduce the discomfort of the patient when the injection tube 110 is inserted into the urethra.

[0066] In the first embodiment, as Figures 7 - 9 shown, the distal end of the injection tube 110 corresponding to the injection channel is a moving part, and the sharp portion 130 is arranged at the moving part. After the injection tube 110 is inserted into the urethra, the driving portion 220 can drive the moving part to move outward along the radial direction of the injection tube 110, so that the sharp portion 130 can puncture human tissues.

[0067] In the second embodiment, as Figure 13 shown, the sharp portion 130 is rotatably arranged on the injection tube 110. After the injection tube 110 is inserted into the urethra, the driving portion 220 can drive the sharp portion 130 to rotate, so that the sharp portion 130 can puncture human tissues.

[0068] Correspondingly, the injection channel of the injection tube 110 can be communicated with the sharp portion 130 through the hose 116, which will not affect the rotation of the sharp portion 130.

[0069] Correspondingly, in order to facilitate the separation of the sharp part 130 from the inner wall of the urethra, an elastic member may be provided at the rotational connection between the sharp part 130 and the injection tube 110.

[0070] Among them, in the first embodiment, as Figures 7 - 9 shown, the injection tube 110 includes a first injection part 111, a second injection part 112, and a traction part 113 that are rotatably connected in sequence from the proximal end to the distal end. The injection channel extends from the first injection part 111 to the second injection part 112, and the sharp part 130 is connected to the distal end of the second injection part 112.

[0071] When the insertion tube 120 is located in the urethra and reaches the injection position, the proximal end of the first injection part 111 is located outside the urethra and can be connected to the syringe 210. The distal end of the traction part 113 can be controlled by the driving part 220 to move along the proximal end of the injection tube 110. During this process, the distal end of the second injection part 112 will rotate relative to the proximal end of the traction part 113, driving the proximal end of the second injection part 112 to rotate relative to the distal end of the first injection part 111. Furthermore, the distal end of the second injection part 112 performs a circular motion, driving the sharp part 130 to move radially outward along the injection tube 110 to pierce the human tissue.

[0072] Specifically, the injection channel includes a first injection hole axially provided along the first injection part 111, a second injection hole axially provided along the second injection part 112, and a hose 116 connecting the first injection hole and the second injection hole. Since the second injection part 112 will rotate relative to the first injection part 111, the hose 116 can ensure that the first injection hole and the second injection hole are always connected.

[0073] During the injection process, the syringe 210 injects the injection agent, which passes through the first injection hole, the hose 116, and the second injection hole in sequence, and enters the inner wall of the urethra from the sharp part 130.

[0074] Preferably in this embodiment, the driving part 220 is a stainless steel wire rope. Correspondingly, in order to facilitate the connection between the stainless steel wire rope and the distal end of the traction part 113, a circular groove 1131 is provided at the distal end of the traction part 113, and the distal end of the stainless steel wire rope is sleeved on the circular groove 1131.

[0075] Preferably in this embodiment, the first injection part 111 is provided with a plurality of guiding parts 1111 in the axial direction, and one end of the driving part 220 can pass through the plurality of guiding parts 1111. The guiding parts 1111 play a guiding role for the driving part 220 to ensure the smooth movement of the driving part 220 during the movement.

[0076] Preferably in this embodiment, the first injection part 111, the second injection part 112, and the traction part 113 are all cylindrical structures and have the same diameter.

[0077] Preferably in this embodiment, the first injection part 111, the second injection part 112 and the traction part 113 rotate in the same plane.

[0078] Optionally, an elastic member is provided at the rotational connection of the first injection part 111 and the second injection part 112. During the process of the second injection part 112 rotating towards the inner wall of the urethra, the proximal end of the second injection part 112 rotates relative to the distal end of the first injection part 111, and the elastic member stores elastic potential energy. After the traction part 113 loses the external force, the elastic potential energy of the elastic member is released, driving the second injection part 112 to rotate in the opposite direction, so that the sharp part 130 is separated from the inner wall of the urethra.

[0079] As Figure 6 and Figure 8 shown, a groove 115 is provided at the proximal end of the traction part 113, and the groove 115 extends axially along the traction part 113 towards the distal end of the traction part 113. As the second injection part 112 rotates relative to the traction part 113, the sharp part 130 can enter or leave the groove 115.

[0080] Specifically, during the movement of the second injection part 112 and the traction part 113 in the urethra, the sharp part 130 is located in the groove 115 to avoid unnecessary damage to the inner wall of the urethra caused by the sharp part 130. When the distal end of the second injection part 112 reaches the part to be injected, the second injection part 112 rotates relative to the traction part 113, and the sharp part 130 moves radially outward along the injection tube 110 and leaves the groove 115.

[0081] As Figure 2 and Figures 6 - 9 shown, a shielding member 114 is provided at the distal end of the second injection part 112, and the shielding member 114 extends axially along the second injection part 112 towards the distal end. The rotational connection of the second injection part 112 and the traction part 113 is covered by the shielding member 114.

[0082] During the process of the distal end of the traction part 113 moving towards the proximal end, the rotational connection of the second injection part 112 and the traction part 113 will abut against the inner wall of the urethra. Since the cross-sectional area of the rotational connection of the second injection part 112 and the traction part 113 is small, a large pressure will be generated during the process of abutting against the inner wall of the urethra, which is likely to cause damage to the inner wall of the urethra of the patient. Therefore, a shielding member 114 is provided at the distal end of the second injection part 112, and the shielding member 114 can cover the rotational connection of the second injection part 112 and the traction part 113 to avoid damage to the urethra caused by the rotational connection of the second injection part 112 and the traction part 113.

[0083] During the injection process, the shielding member 114 abuts against the inner wall of the patient's urethra. Since the shielding member 114 has a certain area, and the area is much larger than the area of the rotational connection between the second injection part 112 and the traction part 113, the shielding member 114 will not cause a large pressure on the inner wall of the urethra, reducing the risk of harm to the inner wall of the patient's urethra.

[0084] As Figures 7 - 9 shown, the distal end of the shielding member 114 has a bent portion 1141. When the bent portion 1141 abuts against the traction part 113, an angle is formed between the side of the second injection part 112 radially away from the shielding member 114 and the side of the traction part 113 radially away from the shielding member 114.

[0085] When the bent portion 1141 abuts against the traction part 113, the injection tube 110 is in a non-injection state. It is necessary to drive the traction part 113 to move towards the proximal end so that the injection tube 110 can drive the sharp part 130 to move radially outward along the injection tube 110. By forming an angle between the side of the second injection part 112 radially away from the shielding member 114 and the side of the traction part 113 radially away from the shielding member 114, the traction part 113 has a tendency to move towards the proximal end. When the traction part 113 is more easily affected by an external force, it moves towards the proximal end, and thus the injection tube 110 can more easily drive the sharp part 130 to move radially outward along the injection tube 110.

[0086] Some embodiments of the present application further provide an insertion assembly, as Figure 2 、 Figure 5 and Figure 6 shown, including an insertion tube 120 and an injection structure 100.

[0087] As Figure 2 、 Figure 5 and Figure 6 shown, the injection tube 110 is located in the instrument channel 121 of the insertion tube 120 and can be controllably moved along the axial direction of the instrument channel 121. During the injection process, first insert the insertion tube 120 into the patient's urethra, and then insert the injection tube 110 into the patient's urethra through the instrument channel 121. Alternatively, the injection tube 110 is preset in the instrument channel 121 in advance and enters the patient's urethra synchronously with the insertion tube 120.

[0088] It should be noted that the inner diameter of the instrument channel 121 is larger than the outer diameter of the injection tube 110, so that the injection tube 110 can move along the axial direction of the instrument channel 121.

[0089] After the insertion tube 120 is inserted into the patient's urethra and reaches or is about to reach the site where injection is required, the insertion tube 120 stops moving and drives the injection tube 110 to move toward the distal end of the insertion tube 120, and the sharp portion 130 is completely extended out of the instrument channel 121. During the injection process, at least a portion of the sharp portion 130 exceeds the insertion tube 120, so that the sharp portion 130 can pierce human tissue.

[0090] Due to the urethral stenosis, the injection tube 110 is easily bent by force during the insertion into the urethra, which may cause the sharp portion 130 to pierce the inner wall of the urethra at a non-injection position. Therefore, by inserting the insertion tube 120 into the urethra first and then extending the injection tube 110 from the instrument channel 121, the injection tube 110 is bent and deformed by the resistance of the urethra, which causes the sharp portion 130 to pierce the inner wall of the urethra at a non-injection position. The insertion tube 120 protects the injection tube 110.

[0091] As preferred in this embodiment, Figure 2 and Figure 6 As shown, when the sharp portion 130 moves to the maximum position along the radial direction of the injection tube 110 toward the outside of the injection tube 110 , the sharp portion 130 completely exceeds the insertion tube 120 , thereby enabling the sharp portion 130 to better pierce the inner wall of the urethra.

[0092] like Figure 5 As shown, the insertion assembly includes a camera module 140. The camera module 140 is used to obtain the field of view near the sharp portion 130 and transmit image information to the outside world, so that medical staff can find a suitable injection position in the urethra.

[0093] In the prior art, the injection method of inserting from the outside into the urethral protrusion requires the use of an introducer against the patient's skin, and the medical staff then passes the sharp portion 130 through the introducer and pierces the skin to reach the injection structure 100. During the entire puncture process, if the positioning of the introducer is inaccurate, the needle insertion direction of the sharp portion 130 may be offset, causing a certain deviation between the final injection structure 100 and the actually required injection structure 100. This embodiment adopts a camera module 140 to obtain the intraurethral field of view, and the sharp portion 130 is injected into the urethra to more accurately inject the actually required injection site.

[0094] In some embodiments, the camera module 140 is disposed at the distal end of the insertion tube 120 .

[0095] In some embodiments, the camera module 140 is disposed at the distal end of the injection tube 110 .

[0096] Some embodiments of the present application also provide an endoscope, such as Figure 1 , Figure 3 , Figure 4and Figures 10 - 12 As shown, it includes an endoscope handle 200, a syringe 210, and an insertion assembly.

[0097] As Figure 1 and Figure 3 shown, the injection end of the syringe 210 is connected to the instrument nozzle 201 of the endoscope handle 200; the proximal end of the injection tube 110 extends into the endoscope handle 200 and communicates with the injection end of the syringe 210.

[0098] Specifically, the proximal end of the first injection part 111 extends into the endoscope handle 200 and is connected to the instrument nozzle 201 of the endoscope handle 200. During the injection process, the injectant sequentially passes through the first injection hole, the hose 116, and the second injection hole and is delivered from the sharp part 130 to the inner wall of the urethra.

[0099] As Figure 3 , Figure 4 and Figure 12 shown, one end of the driving part 220 is connected to the top of the piston end of the syringe 210, and the other end is connected to the distal end of the injection tube 110. During the injection process, the medical staff presses the piston end of the syringe 210. As the piston end moves towards the instrument nozzle 201, the driving part 220 drives the distal end of the injection tube 110 to move towards the proximal end, thereby driving the sharp part 130 to puncture the human tissue radially outward along the injection tube 110.

[0100] Specifically, in the embodiment where the distal end of the injection tube 110 corresponding to the injection channel is a moving part and the sharp part 130 is arranged at the moving part, as Figure 2 and Figure 6 shown, the other end of the driving part 220 is connected to the distal end of the traction part 113. During the injection process, the medical staff presses the piston end of the syringe 210. As the piston end moves towards the instrument nozzle 201, the driving part 220 drives the distal end of the traction part 113 to move towards the proximal end, thereby driving the distal end of the second injection part 112 to drive the sharp part 130 to puncture the human tissue radially outward along the injection tube 110.

[0101] Specifically, in the embodiment where the sharp part 130 is rotatably arranged on the injection tube 110, as Figure 13 shown, the other end of the driving part 220 is connected to the sharp part 130. During the injection process, the medical staff presses the piston end of the syringe 210. As the piston end moves towards the instrument nozzle 201, the driving part 220 drives the sharp part 130 to rotate towards the direction of the inner wall of the urethra and puncture the human tissue.

[0102] Preferably, in this embodiment, there is a mark on the driving part 220. When the mark on the driving part 220 moves to a preset position, it indicates that the distal end of the traction part 113 moves towards the proximal end to the maximum stroke, or the sharp part 130 rotates to the maximum angle, prompting the medical staff to stop pressing the piston end of the syringe 210.

[0103] Further, as Figure 3 shown, a fixed pulley 211 is provided on the syringe 210. One end of the driving part 220 is connected to the top of the piston end of the syringe 210 after being guided by the fixed pulley 211. By providing the fixed pulley 211, the resistance received by the driving part 220 during the process of pulling the traction part 113 or the sharp part 130 to move can be effectively reduced.

[0104] As Figure 3 shown, the injection end of the syringe 210 is connected to the instrument nozzle 201 of the endoscope handle 200 through a connector 230. The injection tube 110 extends to the proximal end of the endoscope handle 200 and is connected to the connector 230, and the connector 230 can move along the axial direction of the instrument nozzle 201 of the endoscope handle 200. By connecting the proximal end of the injection tube 110 through the connector 230 and the connector 230 can move along the axial direction of the instrument nozzle 201, by sliding the connector 230, the injection tube 110 can move back and forth, so that the injection tube 110 can extend out of the instrument channel 121 or all return to the instrument channel 121.

[0105] During the injection process, the medical staff drives the connector 230 to move closer to the instrument nozzle 201. During this process, the distal end of the injection tube 110 gradually extends out of the instrument channel 121 until the sharp part 130 completely moves out of the instrument channel 121. After the injection is completed, the medical staff drives the connector 230 to move away from the instrument nozzle 201. During this process, the injection tube 110 gradually returns to the instrument channel 121 completely.

[0106] Specifically, in the embodiment where the moving part is at the distal end of the injection tube 110 corresponding to the injection channel and the sharp part 130 is arranged at the moving part, as Figure 3 shown. By connecting the proximal end of the first injection part 111 through the connector 230 and the connector 230 can move along the axial direction of the instrument nozzle 201, by sliding the connector 230, the first injection part 111, the second injection part 112 and the traction part 113 can move back and forth, so that the second injection part 112 and the traction part 113 can extend out of the instrument channel 121 or all return to the instrument channel 121.

[0107] Specifically, in the embodiment where the sharp part 130 is rotatably arranged on the injection tube 110, as Figure 3 and Figure 11As shown, the proximal end of the injection tube 110 is connected by a connector 230, and the connector 230 can move axially along the instrument nozzle 201. By sliding the connector 230, the injection tube 110 can move back and forth, so that the injection tube 110 drives the sharp part 130 to extend out of the instrument channel 121 or fully retract into the instrument channel 121.

[0108] Preferably, in this embodiment, as Figure 3 shown, the connector 230 is a three-way pipe. Two of the ends of the connector 230 are connected to the injection end of the syringe 210 and the instrument nozzle 201, and the third end can inject flushing fluid, medicinal liquid, etc. according to the usage requirements, or can also extract liquid from the urethra according to the situation.

[0109] Optionally, in this embodiment, as Figure 4 shown, a sleeve 240 is installed on the outer wall of the syringe 210, and the distal end of the sleeve 240 extends into the endoscope handle 200; the proximal end of the driving part 220 passes through the sleeve 240 and is connected to the piston end of the syringe 210. Since the proximal end of the driving part 220 is connected to the piston end of the syringe 210, part of the driving part 220 is inevitably exposed to the air, increasing the possibility of accidentally touching the driving part 220. Therefore, by connecting the proximal end of the driving part 220 to the piston end of the syringe 210 through the sleeve 240, the part of the driving part 220 exposed to the air is minimized as much as possible, playing a role in protecting the driving part 220.

[0110] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0111] In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0112] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An injection structure, characterized in that: include: An injection tube extends from a proximal end to a distal end and has an injection channel; the injection tube comprises a first injection portion, a second injection portion and a traction portion which are sequentially connected and rotated from the proximal end to the distal end, and the injection channel extends from the first injection portion to the second injection portion; the injection channel is used to guide the injection to move from the proximal end of the injection channel to the distal end of the injection channel for discharge, and the distal end of the injection tube corresponding to the injection channel is a moving portion; A sharp portion, arranged at the moving part, connected to the distal end of the second injection part; the sharp portion is used to puncture human tissue to guide the injection into the human tissue; A driving part, wherein the driving part is used to drive the distal end of the traction part to move toward the proximal end of the injection tube, so that the distal end of the second injection part drives the moving part and then drives the sharp part to move along the radial direction of the injection tube toward the outside of the injection tube to puncture human tissue.

2. An injection structure according to claim 1, characterized in that: The proximal end of the traction portion is provided with a groove, and the groove extends along the axial direction of the traction portion toward the distal end of the traction portion; When the distal end of the second injection part drives the sharp portion to move along the radial direction of the injection tube toward the outside of the injection tube, the sharp portion leaves the groove.

3. An injection structure according to claim 2, characterized in that: A shielding member is provided at the distal end of the second injection portion, and the shielding member extends toward the distal end along the axial direction of the second injection portion; The side where the sharp portion corresponding to the rotational connection between the second injection portion and the traction portion leaves the groove is covered by the shielding member.

4. An injection structure according to claim 3, characterized in that: The shielding member has a curved portion at its distal end; When the bending portion abuts against the traction portion, an angle is formed between a side of the second injection portion radially away from the shielding member and a side of the traction portion radially away from the shielding member.

5. An insertion assembly, characterized in that: comprising an insertion tube and the injection structure according to any one of claims 1 to 4; The injection tube is located in the instrument channel of the insertion tube and can be controlled to move along the axial direction of the instrument channel; the sharp portion can move to the outside of the distal end of the instrument channel.

6. An insert assembly according to claim 5, characterized in that: The insertion component includes a camera module; The camera module is arranged at the distal end of the insertion tube, or the camera module is arranged at the distal end of the injection tube.

7. An endoscope, characterized in that: comprising an endoscope handle, a syringe and the insertion assembly according to claim 5 or 6; The injection end of the syringe is connected to the instrument mouth of the endoscope handle; the proximal end of the injection tube extends into the endoscope handle and is communicated with the injection end of the syringe.

8. An endoscope according to claim 7, characterized in that: The proximal end of the driving part is connected to the top of the piston end of the syringe; when the piston end of the syringe moves toward the mouth of the instrument, the distal end of the driving part causes the sharp end of the needle to move toward one side; And / or, the injection end of the syringe is connected to the instrument mouth through a connector, and the proximal end of the injection tube is connected to the distal end of the connector; the connector can move axially along the instrument mouth to drive the injection tube to move in the instrument channel.

Images