Injection structure, insertion assembly and endoscope

Abstract

The invention relates to the technical field of medical instruments, and discloses an injection structure, an insertion assembly and an endoscope. The injection structure comprises an injection tube with an injection channel; the injection channel is used for guiding injection to move from the near end of the injection channel to the far end of the injection channel to be discharged; the sharp part is arranged on the injection tube and is connected with the far end of the injection channel; the driving part is used for driving the sharp part to puncture towards the outer side of the injection tube in the radial direction of the injection tube. The insertion assembly comprises an insertion tube and an injection structure, and the injection tube is located in the instrument channel of the insertion tube and can be controlled to move in the axial direction of the instrument channel. The endoscope comprises an endoscope handle, an injector and an insertion assembly, and the injection end of the injector is connected with an instrument mouth of the endoscope handle; and the near end of the injection tube extends into the endoscope handle and is communicated with the injection end of the injector. The technical problems that according to an injector in the related technology, the puncture path of a needle head is long, and damage to tissue is large can be solved.

Description

Technical Field

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

[0002] Injections are used to treat women with stress urinary incontinence. Injections can be injected through the urethra or around the urethra into the tissues around the bladder neck and proximal urethra to support the bladder neck and proximal urethra.

[0003] At present, in the existing injection process, the insertion part is first inserted into the urethra to make the part of the urethra that needs to be injected bulge. The medical staff then inserts the needle of the syringe into the bulge part of the urethra from the outside, which causes great damage to the tissue.

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

[0005] The invention discloses an insertion component and an endoscope handle to solve the technical problem that the puncture path of the needle of the syringe in the related art is long and the damage to the tissue is relatively large.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions: In a first aspect, an injection structure is disclosed, comprising: The injection tube extends from the proximal end to the distal end and has an injection channel; 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; A sharp portion is provided on the injection tube and connected to the distal end of the injection channel; the sharp portion is used to puncture human tissue to guide the injection into the human tissue; The driving part is used to drive the sharp part to move along the radial direction of the injection tube toward the outside of the injection tube to puncture human tissue.

[0007] In some embodiments, the distal end of the injection tube corresponding to the injection channel is a moving portion, and the sharp portion is disposed at the moving portion; The moving part can be driven by the driving part to move along the radial direction of the injection tube toward the outside of the injection tube, so that the sharp part can pierce human tissue.

[0008] In some embodiments, the injection tube includes a first injection portion, a second injection portion, and a pulling portion that are rotatably connected in sequence from the proximal end to the distal end; The injection channel extends from the first injection portion to the second injection portion; The sharp portion is connected to the distal end of the second injection portion; 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 sharp part to move along the radial direction of the injection tube toward the outside of the injection tube.

[0009] In some embodiments, a groove is provided at the proximal end of the traction portion, 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 toward the outside of the injection tube along the radial direction of the injection tube, the sharp portion leaves the groove.

[0010] In some embodiments, 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 rotational connection between the second injection part and the traction part corresponds to one side of the groove where the sharp part leaves, and is covered by the shielding member.

[0011] In some embodiments, the distal end of the shielding member has a curved portion; 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.

[0012] In a second aspect, an insertion assembly is disclosed, comprising an insertion tube and the injection structure of the first aspect; 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.

[0013] In some embodiments, the insert assembly 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.

[0014] In a third aspect, an endoscope is disclosed, comprising an endoscope handle, a syringe, and the insertion assembly of the second aspect; 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.

[0015] In some embodiments, the proximal end of the driving part is connected to the top of the piston end of the syringe; during the movement of the piston end of the syringe 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 joint, and the proximal end of the injection tube is connected to the distal end of the joint; the joint can move along the axial direction of the instrument mouth to drive the injection tube to move in the instrument channel.

[0016] The technical solution adopted by the present invention can achieve the following beneficial effects: 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 site where injection is required, the drive unit controls the sharp portion to move toward the inner wall of the body cavity and pierce the human tissue. The injection is transported from the injection tube to the sharp portion through the injection channel and finally enters the human tissue. Since the insertion component of the present application is injected directly in the body cavity, the needle puncture path is short and the damage to the tissue is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0018] Figure 1 is an axial view of the endoscope of the present invention; Figure 2 yes Figure 1 The enlarged view of point A in the middle; Figure 3 yes Figure 1 The enlarged view of point B in the middle; Figure 4 yes Figure 3 Enlarged view of point C in the middle; Figure 5 The axial view of the insertion assembly of the present invention is Figure 1 ; Figure 6 The axial view of the insertion assembly of the present invention is Figure 2 ; Figure 7 It is the axial view of the injection structure of the present invention. Figure 1 ; Figure 8 It is the axial view of the injection structure of the present invention. Figure 2 ; Fig. 9 It is the axial view of the injection structure of the present invention. Figure 3 ; Fig.10 is an axial view of the hidden portion of the housing and the instrument mouth of the endoscope handle of the present invention; Fig.11 yes Fig.10 The enlarged view of point D in the middle; Fig.12 yes Fig.11 Enlarged view of point E in the middle; Fig.13 It is a schematic diagram of the injection structure of the present invention.

[0019] In the figure: 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 member, 1141-bending part, 115-groove, 116-hose, 120-insertion tube, 121-instrument channel, 130-sharp part, 140-camera module; 200 - endoscope handle, 201 - instrument nozzle, 210 - syringe, 211 - fixed pulley, 220 - driving unit, 230 - connector, 240 - sleeve. DETAILED DESCRIPTION

[0020] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0021] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0022] 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".

[0023] The inventor discovered during an operation to treat urodynamic stress urinary incontinence combined with internal sphincter defect that in the existing injection process, the insertion portion is first inserted into the urethra, and the part of the urethra to be injected is raised. The medical staff then inserts the sharp portion 130 of the syringe 210 from the outside into the raised part of the urethra and completes the injection. When the syringe 210 is inserted from the outside into the raised part of the urethra, the puncture path of the sharp portion 130 is long, causing greater damage to the tissue.

[0024] The following is combined with Figures 1 to 13, an injection structure 100, an insertion component and an endoscope provided in the present application are described in detail through specific embodiments and their application scenarios.

[0025] Some embodiments of the present application provide an injection structure 100, such as Figure 7-Figure 9 As shown, it includes an injection tube 110 , a sharp portion 130 and a driving portion 220 .

[0026] like Figure 7-Figure 9 As 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 injection structure 100, the proximal end of the injection tube 110 is located outside the body cavity, so as to facilitate the operation of the injection tube 110. 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.

[0027] It should be noted that the body cavity in this embodiment refers to the urethra, and the urethra is used for schematic description below.

[0028] like Figure 7-Figure 9 As shown, the sharp portion 130 is disposed on the injection tube 110 and connected to the distal end of the injection channel. The sharp portion 130 is used to puncture human tissue. During the injection process, the sharp portion 130 pierces the human tissue, and the injection is transported from the injection tube 110 to the sharp portion 130 through the injection channel and finally enters the human tissue.

[0029] It should be noted that the filler can be collagen, carbon particles, autologous fat and other substances.

[0030] In some embodiments, Figure 7 As shown, the proximal and distal ends of the sharp portion 130 are coaxial.

[0031] In some embodiments, Figure 2 As shown, the distal end of the sharp portion 130 is bent toward the proximal end of the insertion tube 120 .

[0032] like Figure 2 and Figure 6-Figure 9 As shown, the driving portion 220 is used to drive the sharp portion 130 to puncture the outside of the injection tube 110 along the radial direction of the injection tube 110 .

[0033] 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 in the injection tube 110, so as to avoid unnecessary damage to the patient caused by the sharp portion 130. During the injection process, the driving unit 220 controls the sharp portion 130 to move toward the inner wall of the urethra, so that the sharp portion 130 pierces the inner wall of the urethra, and then injects the injection into the injection structure 100 of the urethra through the injection channel. The injection method in which the sharp portion 130 directly pierces the inner wall of the urethra can greatly reduce the puncture path of the sharp portion 130 to reduce damage to the tissue.

[0034] Correspondingly, after the injection is completed, 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.

[0035] Secondly, in the prior art, the injection method of inserting from the outside into the raised part of the urethra requires an asymmetric offset nose to be provided at the distal end of the insertion part, and the injection structure 100 of the urethra is raised by 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 patient's discomfort when inserted into the urethra. This embodiment adopts a method in which the injection tube 110 enters the urethra and then moves toward the inner wall of the body cavity, which can reduce the discomfort of the patient when the injection tube 110 is inserted into the urethra.

[0036] In the first embodiment, if Figure 7-Figure 9 As shown, 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. After the injection tube 110 is inserted into the urethra, the driving part 220 can drive the moving part to move along the radial direction of the injection tube 110 toward the outside of the injection tube 110, so that the sharp part 130 can puncture human tissue.

[0037] In the second embodiment, if Fig.13 As shown, the sharp portion 130 is rotatably disposed 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 tissue.

[0038] Accordingly, the injection channel of the injection tube 110 can be connected to the sharp portion 130 through the hose 116 , which will not affect the rotation of the sharp portion 130 .

[0039] Accordingly, in order to facilitate the separation of the sharp portion 130 from the inner wall of the urethra, an elastic member may be provided at the rotational connection between the sharp portion 130 and the injection tube 110 .

[0040] Among them, in the first embodiment, if Figure 7-Figure 9As shown, the injection tube 110 includes a first injection part 111, a second injection part 112 and a traction part 113 which are rotated and 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.

[0041] 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, thereby causing the distal end of the second injection part 112 to move in a circular motion, driving the sharp part 130 to move along the radial direction of the injection tube 110 toward the outside of the injection tube 110 to puncture human tissue.

[0042] Specifically, the injection channel includes a first injection hole axially arranged along the first injection part 111, a second injection hole axially arranged 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 can 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.

[0043] During the injection process, the syringe 210 injects the injection, 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 portion 130.

[0044] As a preferred embodiment of the present invention, the driving part 220 is a stainless steel wire rope. Accordingly, in order to facilitate the connection between the stainless steel wire rope and the distal end of the traction part 113 , the distal end of the traction part 113 is provided with an annular groove 1131 , and the distal end of the stainless steel wire rope is sleeved on the annular groove 1131 .

[0045] As a preferred embodiment of the present invention, the first injection part 111 is provided with a plurality of guide parts 1111 along the axial direction, and one end of the driving part 220 can pass through the plurality of guide parts 1111. The guide part 1111 guides the driving part 220 to ensure that the driving part 220 is stable during movement.

[0046] As a preferred embodiment of the present invention, the first injection part 111 , the second injection part 112 and the pulling part 113 are all cylindrical structures with the same diameter.

[0047] As a preferred embodiment of the present invention, the first injection part 111 , the second injection part 112 and the pulling part 113 rotate in the same plane.

[0048] Optionally, an elastic member is provided at the rotation connection between the first injection part 111 and the second injection part 112. When the second injection part 112 rotates toward 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. When 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.

[0049] like Figure 6 and Figure 8 As shown, the proximal end of the traction part 113 is provided with a groove 115, and the groove 115 extends along the axial direction of the traction part 113 toward 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 the groove 115 or leave the groove 115.

[0050] Specifically, when the second injection part 112 and the traction part 113 move in the urethra, the sharp part 130 is located in the groove 115 to prevent the sharp part 130 from causing unnecessary damage to the inner wall of the urethra. When the distal end of the second injection part 112 reaches the site to be injected, the second injection part 112 rotates relative to the traction part 113, and the sharp part 130 moves along the radial direction of the injection tube 110 toward the outside of the injection tube 110 and leaves the groove 115.

[0051] like Figure 2 and Figure 6-Figure 9 As shown, a shielding member 114 is provided at the distal end of the second injection portion 112 , and the shielding member 114 extends toward the distal end along the axial direction of the second injection portion 112 . The rotation connection between the second injection portion 112 and the pulling portion 113 is shielded by the shielding member 114 .

[0052] During the process of the distal end of the traction part 113 moving toward the proximal end, the rotational connection between the second injection part 112 and the traction part 113 will stop against the inner wall of the urethra. Since the cross-sectional area of ​​the rotational connection between the second injection part 112 and the traction part 113 is small, a large pressure will be generated during the process of stopping against the inner wall of the urethra, which may easily 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 between the second injection part 112 and the traction part 113 to prevent the rotational connection between the second injection part 112 and the traction part 113 from causing damage to the urethra.

[0053] During the injection process, the shielding member 114 stops 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 causing damage to the inner wall of the patient's urethra.

[0054] like Figure 7-Figure 9 As shown, the distal end of the shielding member 114 has a curved portion 1141. When the curved portion 1141 abuts against the traction portion 113, an angle is formed between the side of the second injection portion 112 radially away from the shielding member 114 and the side of the traction portion 113 radially away from the shielding member 114.

[0055] When the curved portion 1141 abuts against the traction portion 113, the injection tube 110 is in a non-injection state, and the traction portion 113 needs to be driven to move toward the proximal end so that the injection tube 110 can drive the sharp portion 130 to move toward the outside of the injection tube 110 along the radial direction of the injection tube 110. By forming an angle between the side of the second injection portion 112 radially away from the shielding member 114 and the side of the traction portion 113 radially away from the shielding member 114, the traction portion 113 has a tendency to move toward the proximal end. When the traction portion 113 is more easily affected by an external force, it moves toward the proximal end, and the injection tube 110 can more easily drive the sharp portion 130 to move toward the outside of the injection tube 110 along the radial direction of the injection tube 110.

[0056] Some embodiments of the present application also provide an insertion component, such as Figure 2 , Figure 5 and Figure 6 As shown, an insertion tube 120 and an injection structure 100 are included.

[0057] like Figure 2 , Figure 5 and Figure 6 As shown, the injection tube 110 is located in the instrument channel 121 of the insertion tube 120 and can be controlled to move along the axial direction of the instrument channel 121. During the injection process, the insertion tube 120 is first inserted into the patient's urethra, and then the injection tube 110 enters the patient's urethra through the instrument channel 121. Alternatively, the injection tube 110 is preset in the instrument channel 121 and enters the patient's urethra synchronously with the insertion tube 120.

[0058] It should be noted that the inner diameter of the instrument channel 121 is greater than the outer diameter of the injection tube 110 , thereby enabling the injection tube 110 to move axially along the instrument channel 121 .

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] In some embodiments, the camera module 140 is disposed at the distal end of the insertion tube 120 .

[0065] In some embodiments, the camera module 140 is disposed at the distal end of the injection tube 110 .

[0066] Some embodiments of the present application also provide an endoscope, such as Figure 1 , Figure 3 , Figure 4 and Figure 10-12 As shown, it includes an endoscope handle 200, a syringe 210 and an insertion assembly.

[0067] like Figure 1 and Figure 3As 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 is connected to the injection end of the syringe 210 .

[0068] Specifically, the proximal end of the first injection portion 111 extends into the endoscope handle 200 and is connected to the instrument mouth 201 of the endoscope handle 200. During the injection process, the injection is sequentially delivered from the sharp portion 130 to the inner wall of the urethra through the first injection hole, the hose 116 and the second injection hole.

[0069] like Figure 3 , Figure 4 and Fig.12 As 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, and as the piston end moves toward the instrument mouth 201, the driving part 220 drives the distal end of the injection tube 110 to move toward the proximal end, thereby driving the sharp part 130 to puncture the human tissue along the radial direction of the injection tube 110 toward the outside of the injection tube 110.

[0070] Specifically, in an embodiment where the distal end of the injection tube 110 corresponding to the injection channel is a moving portion, the sharp portion 130 is disposed at the moving portion, such as Figure 2 and Figure 6 As 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, and as the piston end moves toward the instrument mouth 201, the driving part 220 drives the distal end of the traction part 113 to move toward the proximal end, thereby driving the distal end of the second injection part 112 to drive the sharp part 130 along the radial direction of the injection tube 110 toward the outside of the injection tube 110 to puncture the human tissue.

[0071] Specifically, in an embodiment where the sharp portion 130 is rotatably disposed on the injection tube 110, as shown in FIG. Fig.13 As 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, and as the piston end moves toward the instrument mouth 201, the driving part 220 drives the sharp part 130 to rotate toward the inner wall of the urethra and puncture the human tissue.

[0072] As a preferred embodiment of the present invention, a mark is provided 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 to 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.

[0073] Further, such as Figure 3As 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 encountered by the driving part 220 in the process of pulling the traction part 113 or the sharp part 130 to move can be effectively reduced.

[0074] like Figure 3 As shown, the injection end of the syringe 210 is connected to the instrument mouth 201 of the endoscope handle 200 through the joint 230, and the injection tube 110 extends to the proximal end of the endoscope handle 200 and is connected to the joint 230, and the joint 230 can move along the axial direction of the instrument mouth 201 of the endoscope handle 200. The proximal end of the injection tube 110 is connected to the joint 230, and the joint 230 can move along the axial direction of the instrument mouth 201. By sliding the joint 230, the injection tube 110 can move forward and backward, thereby allowing the injection tube 110 to extend out of the instrument channel 121 or return completely to the instrument channel 121.

[0075] During the injection process, the medical staff drives the connector 230 to move closer to the instrument mouth 201. During this process, the distal end of the injection tube 110 gradually extends out of the instrument channel 121 until the sharp portion 130 is completely moved out of the instrument channel 121. After the injection is completed, the medical staff drives the connector 230 to move away from the instrument mouth 201. During this process, the injection tube 110 gradually returns to the instrument channel 121.

[0076] Specifically, in an embodiment where the distal end of the injection tube 110 corresponding to the injection channel is a moving portion, the sharp portion 130 is disposed at the moving portion, such as Figure 3 The proximal end of the first injection part 111 is connected by the joint 230, and the joint 230 can move axially along the instrument mouth 201. By sliding the joint 230, the first injection part 111, the second injection part 112 and the traction part 113 can move forward and backward, so that the second injection part 112 and the traction part 113 can extend out of the instrument channel 121 or return to the instrument channel 121 completely.

[0077] Specifically, in an embodiment where the sharp portion 130 is rotatably disposed on the injection tube 110, as shown in FIG. Figure 3 and Fig.11 The proximal end of the injection tube 110 is connected by the joint 230, and the joint 230 can move axially along the instrument mouth 201. By sliding the joint 230, the injection tube 110 can move forward and backward, so that the injection tube 110 drives the sharp part 130 to extend out of the instrument channel 121 or return to the instrument channel 121 completely.

[0078] As preferred in this embodiment, Figure 3As shown, the connector 230 is a three-way pipe. Two 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 be injected with flushing liquid, liquid medicine, etc. according to the use requirements, and can also be used to extract liquid from the urethra according to the situation.

[0079] As an option of this embodiment, Figure 4 As 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 unit 220 passes through the sleeve 240 and is connected to the piston end of the syringe 210. Since the proximal end of the driving unit 220 is connected to the piston end of the syringe 210, part of the driving unit 220 is inevitably exposed to the air, which increases the possibility of accidentally touching the driving unit 220. Therefore, by the way that the proximal end of the driving unit 220 passes through the sleeve 240 and is connected to the piston end of the syringe 210, the part of the driving unit 220 exposed to the air is reduced as much as possible, which plays a role in protecting the driving unit 220.

[0080] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0081] In addition, it should be noted 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 a 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 be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0082] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection structure, characterized in that: include: 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 to move from the proximal end of the injection channel to the distal end of the injection channel for discharge; A sharp portion is arranged on the injection tube and connected to the distal end of the injection channel; the sharp portion is used to puncture human tissue to guide the injection into the human tissue; The driving part is used to drive 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 distal end of the injection tube corresponding to the injection channel is a moving part, and the sharp part is arranged at the moving part; The moving part can be driven by the driving part to move along the radial direction of the injection tube toward the outside of the injection tube, so that the sharp part can puncture human tissue.

3. An injection structure according to claim 2, characterized in that: The injection tube comprises a first injection part, a second injection part and a pulling part which are rotatably connected in sequence from the proximal end to the distal end; The injection channel extends from the first injection portion to the second injection portion; The sharp portion is connected to the distal end of the second injection portion; 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 sharp part to move along the radial direction of the injection tube toward the outside of the injection tube.

4. An injection structure according to claim 3, 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.

5. An injection structure according to claim 4, 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.

6. An injection structure according to claim 5, 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.

7. An insertion assembly, characterized in that: comprising an insertion tube and the injection structure according to any one of claims 1 to 6; 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.

8. An insert assembly according to claim 7, 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.

9. An endoscope, characterized in that: comprising an endoscope handle, a syringe and the insertion assembly according to claim 7 or 8; 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.

10. An endoscope according to claim 9, 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.

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