Endoscope and front end assembly and insertion part thereof

Abstract

The invention discloses an endoscope and a front-end assembly and an insertion part thereof, and relates to the field of medical instruments, the front-end assembly comprises a front-end shell, a camera module, an acupuncture mechanism and a driving mechanism, the front-end shell is provided with a movable cavity, the camera module is arranged in the front-end shell, the acupuncture mechanism comprises a syringe and an injection needle, the syringe can slide into or out of the movable cavity, and the injection needle is arranged in the movable cavity. The syringe is provided with an injection cavity, the injection needle is slidably matched in the injection cavity, and the driving mechanism is in transmission connection with the syringe. The syringe slides out of the movable cavity, and the far end of the syringe can be located in the view field of the camera module. The medical staff can observe the position information of the syringe and the affected part at the same time, adjust the endoscope based on the information, and guide and adjust the insertion direction and the insertion position of the injection needle so as to ensure that the injection needle can accurately pierce the affected part. By means of the arrangement, the treatment effect can be improved, damage to other tissue is reduced, and the situation that the acupuncture effect of the acupuncture mechanism is affected due to bending, twisting and the like of the endoscope in the human body cavity is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an endoscope and a front end component and an insertion part thereof. Background Art

[0002] Endoscope is a commonly used medical device. It is an inspection device that can directly enter the natural cavity of the human body and provide doctors with sufficient diagnostic information to treat diseases. Endoscopic acupuncture injection technology is an advanced medical technology that combines endoscopic observation with acupuncture injection operation. It is mainly used to inject drugs into lesions in the digestive tract, bladder and other internal cavities.

[0003] The existing endoscopic acupuncture structure has poor acupuncture effect. It is difficult for the endoscopic acupuncture structure to accurately puncture the affected part, which may lead to poor treatment effect. It may even accidentally puncture other tissues around the affected part, causing bleeding, pain or more serious tissue damage. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned related technologies, the present application provides an endoscope and its front end component and insertion part to solve the above-mentioned technical problems.

[0005] The present application provides a front end component of an endoscope, comprising a front end shell, a camera module, a puncture mechanism and a driving mechanism, wherein the front end shell has an active cavity, the camera module is arranged in the front end shell, the puncture mechanism comprises a syringe and an injection needle, the syringe can slide into or out of the active cavity, the syringe has an injection cavity, the injection needle is slidably fitted in the injection cavity, and the driving mechanism is connected to the syringe, wherein when the syringe slides out of the active cavity and moves to a first preset position, the distal end of the syringe is located within the field of view of the camera module, and the driving mechanism can inject a medium with a preset pressure value into the syringe, and the medium pushes the injection needle so that the injection needle extends out of the distal end of the syringe.

[0006] In one embodiment of the present application, a piston member is disposed at the proximal end of the injection needle, and the piston member is provided with a first channel, the first channel being connected to the injection needle, the piston member slidingly fits in the injection chamber, the driving mechanism being connected to the injection chamber, the medium being able to enter the injection chamber and push the piston member, and when the piston member slides to the second preset position, the medium being able to pass through the first channel and flow to the distal end of the injection needle.

[0007] In one embodiment of the present application, the driving mechanism includes a first tube body and a first elastic member, one end of the first elastic member is connected to the cavity wall of the movable cavity, and the other end is connected to the proximal end of the syringe. The first tube body is connected to the proximal end of the syringe. The first tube body is used to drive the syringe to move toward the proximal end of the syringe. The first tube body can inject a medium into the syringe, and the medium pushes the injection needle out of the syringe.

[0008] In one embodiment of the present application, the front end assembly further includes a second tube body, which is redundantly arranged in the syringe barrel, and the distal end of the second tube body is connected to the first channel, and the second tube body can inject a medium into the distal end of the injection needle.

[0009] In one embodiment of the present application, the second tube is disposed inside the first tube.

[0010] In one embodiment of the present application, the peripheral wall of the piston is configured as an arc surface.

[0011] In one embodiment of the present application, a second channel is provided on the tube wall of the injection barrel, the second channel extends along the axis of the injection barrel, and opposite ends of the second channel penetrate the inner wall of the injection barrel; When the piston slides to the second preset position, the distal end of the injection needle extends out of the injection barrel, the first channel is connected to the second channel, and the medium can pass through the second channel and flow into the first channel.

[0012] In one embodiment of the present application, the acupuncture mechanism also includes a second elastic member, which is located in the injection chamber, and one end of the second elastic member is connected to the inner wall of the injection barrel, and the other end is connected to the end of the piston member away from the injection needle. The second elastic member is used to drive the piston member to move toward the side close to the proximal end of the injection barrel.

[0013] In one embodiment of the present application, a guide groove is provided on the inner wall of the syringe, and the guide groove extends along the axis of the syringe. A protrusion is provided on the circumference of the piston, and the protrusion is embedded in the guide groove.

[0014] In one embodiment of the present application, the injection needle has an injection channel suitable for the flowing medium, and the cross-sectional area ratio between the injection channel and the injection cavity is 1:12-1:5.

[0015] In one embodiment of the present application, an opening is formed at the distal end of the injection barrel, and the injection needle is slidably fitted in the opening, so that chamfers are formed at opposite ends of the hole wall of the opening.

[0016] To achieve the above-mentioned purpose and other related purposes, the present application provides an insertion portion, which includes the aforementioned front end component.

[0017] To achieve the above-mentioned purpose and other related purposes, the present application provides an endoscope, which includes the aforementioned insertion portion.

[0018] The technical solution adopted by the present invention can achieve the following beneficial effects: the syringe can slide into or out of the active cavity. The syringe slides out of the active cavity, and the distal end of the syringe can be within the field of view of the camera module. Medical staff can simultaneously observe the position information of the syringe and the affected part, and adjust the endoscope based on the information to guide and adjust the insertion direction and insertion position of the injection needle to ensure that the injection needle can accurately penetrate the affected part. This setting can improve the treatment effect, reduce damage to other tissues, avoid the acupuncture effect of the acupuncture mechanism affected by bending, twisting, etc. of the endoscope in the human body cavity, reduce the probability of wrong insertion, and reduce surgical risks.

[0019] In addition, the drive mechanism can inject the medium into the syringe to push the injection needle. The pressure of the medium is controllable and stable. By changing the preset pressure value of the medium, the pushing effect of the medium on the injection needle can be changed, so as to adapt to different affected parts, avoid the situation of being unable to penetrate the affected part or piercing the cavity, etc., and significantly improve the implementation effect and efficiency of the front-end component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 is a schematic structural diagram of an insertion portion shown in an exemplary embodiment of the present application; Figure 2 is a schematic structural diagram of another insertion portion shown in an exemplary embodiment of the present application; Figure 3 is a schematic structural diagram of a front end assembly and an active bending section shown in an exemplary embodiment of the present application; Figure 4 is a schematic structural diagram of a front-end component from another perspective shown in an exemplary embodiment of the present application; Figure 5 is a schematic structural diagram of an insertion portion in a human organ shown in an exemplary embodiment of the present application; Figure 6 is a schematic structural diagram of another front end assembly and an active bending section shown in an exemplary embodiment of the present application; Figure 7 is a structural schematic diagram of another front end assembly and an active bending section shown in an exemplary embodiment of the present application; Figure 8 yes Figure 7 The enlarged view of point a in the figure; Fig. 9 It is a schematic diagram of the structure of an endoscope shown in an exemplary embodiment of the present application.

[0022] In the figure: 1, endoscope; 100, front end assembly; 110, front end shell; 111, active cavity; 120, acupuncture mechanism; 121, injection barrel; 1211, second channel; 1212, opening; 122, injection needle; 1221, injection channel; 123, injection cavity; 124, piston member; 1241, first channel; 125, second elastic member; 130, camera module; 140, driving mechanism; 141, first tube body; 142, first elastic member; 143, second tube body; 200, insertion portion; 210, active bending section. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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".

[0026] The acupuncture effect of the existing endoscope's acupuncture structure is not good. Because the human body's cavity is curved, the insertion part may twist, bend or slightly deform in the cavity, and the relative position between the acupuncture mechanism and the camera module 130 may change. In addition, during the insertion process of the insertion part, in order to prevent the acupuncture mechanism from scratching the inner wall of the cavity, the acupuncture mechanism is arranged in the insertion part. Before the acupuncture mechanism is inserted, the medical staff cannot observe the specific position of the acupuncture mechanism in the display screen of the endoscope. Medical staff can only judge the approximate position of the acupuncture mechanism through experience. This will make it difficult for the acupuncture structure of the endoscope to accurately pierce the affected part, which may result in poor treatment effect. There may even be accidental puncture of other tissues around the affected part, causing bleeding, pain or more serious tissue damage.

[0027] The present application provides a front end assembly 100 of an endoscope 1, see Figure 1 , the following content is referred to as the front-end component 100. The front-end component 100 can be inserted into a human body cavity, and under the operation of medical personnel, the front-end component 100 can perform different operations.

[0028] For example, please refer to Figure 1 The endoscope 1 may include an insertion portion 200, and the insertion portion 200 may include a front end assembly 100 and an active bending section 210. Under the operation of medical personnel, the active bending section 210 may be bent, and the front end assembly 100 is connected to the distal end of the active bending section 210. During the bending process of the active bending section 210, the front end assembly 100 may be set in a plurality of different directions, and the position and orientation of the front end assembly 100 may be adjusted so that the front end assembly 100 may observe or treat the affected part.

[0029] In addition, it is understandable that, in addition to the active bending section 210, medical staff can also change the relative position and orientation of the front end component 100 by pulling out, continuing to insert or rotating the endoscope 1, so that the front end component 100 can complete complex tasks, which will not be elaborated here.

[0030] In this example, see Figure 2 The front end assembly 100 may include a front end shell 110 , a needling mechanism 120 , a camera module 130 and a driving mechanism 140 . The camera module 130 and the needling mechanism 120 are disposed in the front end shell 110 , and the driving mechanism 140 is connected to the needling mechanism 120 .

[0031] The front end shell 110 has an active cavity 111, and the injection cavity 123 can extend from the proximal end to the distal end of the front end assembly 100. The shape of the active cavity 111 can be cylindrical, cubic, etc. Further, the distal end of the front end shell 110 is provided with an opening 1212, and the opening 1212 is connected to the injection cavity 123.

[0032] The camera module 130 is disposed in the front housing 110. The camera module 130 can observe the front image of the extended front assembly 100, prevent other substances from hindering the movement of the front assembly 100, and collect image information of the affected part, such as the relative position between the affected part and the front assembly 100.

[0033] The puncture mechanism 120 can be slidably fitted in the active cavity 111 . Exemplarily, the opening 1212 communicating with the active cavity 111 can pass through at least a portion of the puncture mechanism 120 . The puncture mechanism 120 is slidably disposed in the injection cavity 123 .

[0034] More specifically, see Figure 2 as well as Figure 3 The acupuncture mechanism 120 may include a syringe 121 and an injection needle 122. The syringe 121 may be an elongated tubular structure. The syringe 121 is slidably matched with the active cavity 111, and the syringe 121 can slide into or out of the active cavity 111. Figure 4 As shown, when the syringe 121 slides out of the active cavity 111 and moves to the first preset position, the distal end of the syringe 121 is located within the field of view b of the camera module 130. Figure 5 As shown, Figure 5 The insertion part 200 is inserted into the human organ (bladder), and the camera module 130 can simultaneously collect image information of the syringe 121 and the affected part c, and transmit the image back to the display device for medical staff to observe and use. This setting enables medical staff to simultaneously observe the relative position information of the syringe 121 and the affected part c, and adjust the endoscope 1 based on the information to guide and adjust the insertion direction and insertion position of the injection needle 122 to ensure that the injection needle 122 can accurately penetrate the affected part c. This setting can improve the treatment effect, reduce damage to other tissues, avoid the acupuncture effect of the acupuncture mechanism 120 due to bending, twisting, etc. of the endoscope 1 in the human cavity, reduce the probability of wrong insertion, and reduce surgical risks.

[0035] The first preset position refers to the position of the syringe 121 when it is extended to a preset length. When the syringe 121 is in the first preset position, the syringe 121 is spaced apart from the affected part. The distance between the syringe 121 and the affected part is less than or equal to the maximum extension length of the injection needle 122 relative to the syringe 121.

[0036] See also Figure 3 as well as Figure 6 , Figure 3 The schematic diagram shows the structure of the injection needle 122 being located in the injection cavity 123. Figure 6The schematic diagram of the structure in which the injection needle 122 extends out of the injection cavity 123 is shown. The syringe 121 has an injection cavity 123, and the injection needle 122 is slidably matched in the injection cavity 123. The driving mechanism 140 is connected to the syringe 121 in a transmission manner. When the syringe 121 slides to the first preset position, the driving mechanism 140 can inject a medium with a preset pressure value into the syringe 121, and the medium pushes the injection needle 122 so that the injection needle 122 extends out of the distal end of the syringe 121. During this period, the pressure of the medium is controllable and stable. Medical staff can change the pushing effect of the medium on the injection needle 122 by changing the preset pressure value of the medium, such as different insertion speeds or different depths of insertion ranges, so as to adapt to different affected parts, avoid the situation where the affected part cannot be pierced or the cavity is pierced, and significantly improve the implementation effect and efficiency of the front-end component 100.

[0037] In this example, please continue to refer to Figure 3 , a piston 124 is disposed at the proximal end of the injection needle 122 to ensure synchronization of the piston 124 and the injection needle 122 during movement in the injection cavity 123. The piston 124 may be made of rubber or thermoplastic elastomer (TPE), etc., which is not limited in this embodiment. The piston 124 is slidably fitted in the injection cavity 123, and the driving mechanism 140 is connected to the injection cavity 123. Under the action of the driving mechanism 140, the medium can enter the injection cavity 123 and push the piston 124. When the piston 124 is pushed by the medium, it slides along the inner wall of the injection cavity 123. The sliding process of the piston 124 in the injection cavity 123 is stable, so that the moving path of the injection needle 122 in the injection cavity 123 is controllable, so that the injection needle 122 can accurately slide out of the injection cavity 123. In addition, the matching relationship between the piston 124 and the injection cavity 123 ensures minimum friction and maximum sealing.

[0038] Please continue reading Figure 3 The piston 124 is provided with a first channel 1241, and the first channel 1241 is connected to the injection needle 122. When the piston 124 slides to the second preset position, the medium can pass through the first channel 1241 and flow to the distal end of the injection needle 122. The first channel 1241 can provide a path for the medium (such as saline, distilled water or other drugs, etc.) to be transferred from the piston 124 to the distal end of the injection needle 122, ensuring that the medium can be injected into the affected part.

[0039] The second preset position may refer to the position of the injection needle 122 when it is extended to a preset length, or the relative position between the injection needle 122 and the syringe 121 when the distal end of the injection needle 122 pierces the affected part.

[0040] In this example, please continue to refer to Figure 3The driving mechanism 140 may include a first tube body 141 and a first elastic member 142. The first elastic member 142 may be a spring or a spring sheet, etc., which is not limited in this embodiment. One end of the first elastic member 142 is connected to the cavity wall forming the active cavity 111, and the other end is connected to the proximal end of the syringe 121. The first elastic member 142 can continuously act between the cavity wall forming the active cavity 111 and the syringe 121. The first elastic member 142 is used to drive the syringe 121 so that the syringe 121 extends out of the active cavity 111, so that the distal end of the syringe 121 is located within the field of view of the camera module 130.

[0041] Please continue reading Figure 3 The first tube body 141 is connected to the proximal end of the syringe 121, and the first tube body 141 is used to drive the syringe 121 to move toward the proximal end of the syringe 121. The medical staff can pull the proximal end of the first tube body 141 to drive the syringe 121 to retract into the movable cavity 111, so as to prevent the syringe 121 from extending out of the movable cavity 111 and affecting the normal insertion of the insertion part 200, thereby improving the use effect of the front end assembly 100 and the passability of the insertion part 200.

[0042] In addition, the first tube body 141 can inject a medium into the syringe 121, and the medium pushes the injection needle 122 out of the syringe 121. Exemplarily, the medical staff injects the medium toward the proximal end of the first tube body 141 and pressurizes the medium. The specific pressure of the medium can be set to a preset pressure value. The pressure of the medium is stable, and its pushing effect on the piston 124 is relatively stable. Furthermore, the medium can stably push the injection needle 122 to the second preset position, thereby improving the activity stability of the injection needle 122.

[0043] In some other cases, the driving mechanism 140 may include an elastic capsule (not shown), the elastic capsule is filled with a medium, the pressure of the medium in the elastic capsule is a preset pressure value, and the elastic capsule is connected to the syringe 121. When the elastic capsule is triggered, the medium can be quickly injected into the syringe 121 and push the piston 124. The triggering method includes but is not limited to opening a valve between the syringe 121 and the elastic capsule. This setting can also enable the injection needle 122 to be quickly extended, which will not be described in detail here.

[0044] In this example, see Figure 6The front end assembly 100 may also include a second tube body 143, which is connected to the piston member 124 of the acupuncture mechanism 120. The second tube body 143 is redundantly arranged in the syringe 121. The redundant arrangement means that the length of the second tube body 143 is set to be long enough. For example, the length of the second tube body 143 may be greater than or equal to the length of the syringe 121 to avoid the second tube body 143 being too short to affect the range of motion of the piston member 124. The distal end of the second tube body 143 is connected to the first channel 1241, and the second tube body 143 can inject a medium into the distal end of the injection needle 122. The piston member 124 can drive the second tube body 143 to move so as to always maintain the connection between the second tube body 143 and the first channel 1241. This arrangement can ensure that the injection needle 122 can inject the medium and improve the functional stability of the injection needle 122.

[0045] More specifically, the second tube body 143 is inserted into the first tube body 141. Further, the outer diameter of the second tube body 143 is smaller than the inner diameter of the first tube body 141, the second tube body 143 can be inserted into the first tube body 141, and the second tube body 143 can be slidably arranged relative to the first tube body 141. This arrangement can ensure the driving and injection effects of the second tube body 143, and can also improve the integration of the front end assembly 100, reduce the arrangement of pipelines, and improve assembly efficiency.

[0046] Preferably, the piston member 124 can be interference fit with the cavity wall forming the injection cavity 123, and then the piston member 124 can separate the injection cavity 123 into two areas, which can avoid leakage of the medium. The peripheral wall of the piston member 124 is configured as an arc surface, which can reduce the contact surface between the piston member 124 and the cavity wall forming the injection cavity 123, so that the piston member 124 can be more easily inserted into the injection cavity 123. The piston member 124 and the cavity wall have a smaller contact surface, and the piston member 124 with an interference fit is more likely to deform, which will also reduce the elastic force of the piston member 124 and reduce the possibility of wear and friction. This helps to reduce the energy loss and wear of the piston member 124 during the movement process and extend the service life of the endoscope 1.

[0047] In another case, the second tube body 143 can be independently provided with the first tube body 141. Specifically, the second tube body 143 is located outside the first tube body 141, and the first tube body 141 and the second tube body 143 are spaced apart, which will not be described in detail here.

[0048] In another embodiment, see Figure 7 as well as Figure 8, the tube wall of the syringe 121 is provided with a second channel 1211, the second channel 1211 extends along the axis of the syringe 121, and the second channel 1211 is built into the tube wall of the syringe 121, which not only simplifies the structure, but also improves the efficiency of medium flow. The opposite ends of the second channel 1211 penetrate the inner wall of the syringe 121, and the opposite ends of the second channel 1211 are connected to the injection cavity 123. When the piston member 124 slides to the second preset position, the distal end of the injection needle 122 extends out of the syringe 121, and the first channel 1241 is connected to the second channel 1211. Among them, the second preset position is between the opposite ends of the second channel 1211. The medium can pass through the second channel 1211 and flow into the first channel 1241. At this time, under the influence of the second channel 1211, the thrust of the medium on the piston member 124 is weakened, and the medium flows into the injection needle 122 through the first channel 1241. The medium can accurately push the piston 124 to the second preset position, thereby improving the insertion accuracy of the injection needle 122 . Meanwhile, the medium is automatically injected into the injection needle 122 , thereby reducing the operation steps and improving the operation efficiency.

[0049] For more details, please refer to Figure 7 as well as Figure 8 The acupuncture mechanism 120 may further include a second elastic member 125, which may be a spring or a shrapnel, etc., and this embodiment does not limit this. The second elastic member 125 is located in the injection cavity 123, one end of the second elastic member 125 is connected to the inner wall of the injection barrel 121, and the other end is connected to the end of the piston member 124 away from the injection needle 122. The second elastic member 125 is used to drive the piston member 124 to move toward the side close to the proximal end of the injection barrel 121. Exemplarily, the medium flows into the injection needle 122 and is injected into the affected part. The pressure of the medium decreases, and the thrust of the medium on the piston member 124 is weakened. The second elastic member 125 can move the piston member 124 toward the side close to the proximal end of the injection barrel 121. Under the action of the second elastic member 125, the piston member 124 moves to block the second channel 1211, and the injection needle 122 is automatically pulled out of the affected part. The first channel 1241 and the injection cavity 123 are separated from each other to prevent the body fluid in the cavity from flowing back into the insertion part 200. Under the premise that the first channel 1241 and the injection cavity 123 are separated from each other, medical staff can apply negative pressure to the first tube body 141, and the negative pressure can draw back the medium in the first tube body 141. Under the action of the negative pressure and the elastic force of the second elastic member 125, the injection needle 122 is retracted into the injection cavity 123 to prevent the insertion part 200 from being pulled out and scratching the cavity wall, further improving the safety of the acupuncture mechanism 120.

[0050] The inner wall of the syringe 121 is provided with a guide groove (not shown in the figure). In other words, the inner wall forming the injection cavity 123 is provided with a guide groove. Specifically, the inner wall of the syringe 121 is recessed to form a guide groove. The guide groove extends along the axis of the syringe 121. A convex block is provided on the circumferential side of the piston member 124. The convex block and the guide groove are correspondingly provided. If the width of the convex block is less than or equal to the groove width of the guide groove, this embodiment does not limit it. The convex block is embedded in the guide groove, and the convex block can move together with the piston member 124. For the convex block, the guide groove has a guiding function. This setting can prevent the groove wall forming the guide groove from hindering the piston member 124 from rotating in the circumferential direction, ensure that the first channel 1241 can be connected with the second channel 1211, and further improve the reliability of the acupuncture mechanism 120. In addition, the guide groove can also limit the sliding path of the convex block, that is, limit the maximum extension length of the injection needle 122, and prevent the injection needle 122 from extending excessively and piercing the human body cavity wall.

[0051] In one case, see Figure 8 The injection needle 122 has an injection channel 1221 suitable for the flow of medium, and the cross-sectional area ratio between the injection channel 1221 and the injection cavity 123 is 1:12-1:5, such as 1:12, 1:10 or 1:5, etc., which is not limited in this embodiment. The cross-sectional area ratio should not be set too small or too large. When the cross-sectional area is set too small, the injection channel 1221 of the injection needle 122 is small, and the medium will continue to act on the piston member 124, forcing the piston member 124 to squeeze the cavity wall of the injection cavity 123 and the hole wall of the opening 1212, resulting in the injection needle 122 extending too long and the acupuncture mechanism 120 being damaged. When the cross-sectional area is set too large, the injection channel 1221 of the injection needle 122 is large, and the medium will quickly flow out of the injection channel 1221 of the injection needle 122, resulting in the medium not pushing the piston member 124 to the specified position. An appropriate cross-sectional area ratio can balance the driving effect of the medium on the piston 124, the injection effect of the injection needle 122, etc., so that the medium can push the piston 124 to move to a specified position, and the medium can be quickly injected from the injection needle 122, thereby improving the use efficiency and effect of the front-end component 100.

[0052] In this example, please refer to Figure 3 The distal end of the injection barrel 121 is provided with an opening 1212, the shape and size of the opening 1212 are adapted to the injection needle 122, for example, if the injection needle 122 is an elongated cylindrical shape, the opening 1212 is correspondingly configured as a circular hole, etc. The injection needle 122 is slidably matched with the opening 1212, and the injection needle 122 can slide into or out of the injection cavity 123 along the axis of the opening 1212.

[0053] Preferably, please continue to see Figure 3, chamfers are provided at the opposite ends of the hole wall forming the opening 1212. The chamfers may be rounded corners or chamfered bevels, etc., which are not limited in this embodiment. Furthermore, the edge of the opening 1212 may form a smooth arc surface or an inclined surface. The injection needle 122 will not be subject to sudden resistance or deflection when contacting the hole wall, but will be able to gradually enter the hole along the direction of the inclined surface, that is, the injection needle 122 can enter the hole along a more stable path. This smooth transition reduces the friction and collision between the injection needle 122 and the hole wall, reduces the risk of damage to the injection needle 122, and also improves the accuracy and efficiency of the operation.

[0054] To achieve the above-mentioned purpose and other related purposes, the present application provides an insertion portion 200, see Fig. 9 , the insertion part 200 includes the aforementioned front end assembly 100. In this way, the insertion part 200 has the beneficial effects of any of the aforementioned solutions, which will not be described in detail here.

[0055] To achieve the above-mentioned and other related purposes, the present application provides an endoscope 1, see Fig. 9 , the endoscope 1 includes the aforementioned insertion portion 200. In this way, the endoscope 1 has the beneficial effects of any of the aforementioned solutions, which will not be repeated here. The endoscope 1 of the embodiment of the present application can be a nephroscope, a bronchoscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc.

[0056] The technical solution adopted by the present invention can achieve the following beneficial effects: the syringe 121 can slide into or out of the active cavity 111. The syringe 121 slides out of the active cavity 111, and the distal end of the syringe 121 can be within the field of view of the camera module 130. Medical staff can simultaneously observe the position information of the syringe 121 and the affected part, and adjust the endoscope 1 based on the information to guide and adjust the insertion direction and insertion position of the injection needle 122 to ensure that the injection needle 122 can accurately penetrate the affected part. This setting can improve the treatment effect, reduce damage to other tissues, avoid the influence of the acupuncture effect of the acupuncture mechanism 120 due to the bending and twisting of the endoscope 1 in the human body cavity, reduce the probability of wrong insertion, and reduce the risk of surgery.

[0057] In addition, the drive mechanism 140 can inject a medium toward the syringe 121 to push the injection needle 122. The pressure of the medium is controllable and stable, and the pushing effect of the medium on the injection needle 122 can be changed by changing the preset pressure value of the medium, so as to adapt to different affected parts, avoid the situation of being unable to pierce the affected part or piercing the cavity, etc., and significantly improve the implementation effect and efficiency of the front-end assembly 100.

[0058] 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.

[0059] 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.

[0060] 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. A front end assembly of an endoscope, characterized in that: include: A front end shell, wherein the front end shell has an active cavity; A camera module, wherein the camera module is disposed in the front end shell; Acupuncture mechanism, the acupuncture mechanism comprising a syringe and an injection needle, the syringe can slide into or out of the movable cavity, the syringe has an injection cavity, and the injection needle is slidably fitted in the injection cavity; as well as A driving mechanism, the driving mechanism being drivingly connected to the injection cylinder; Wherein, when the syringe slides out of the movable cavity and moves to the first preset position, the distal end of the syringe is located within the field of view of the camera module, and the driving mechanism can inject a medium with a preset pressure value into the syringe, and the medium pushes the injection needle so that the injection needle extends out of the distal end of the syringe.

2. The front end assembly according to claim 1, characterized in that: A piston is disposed at the proximal end of the injection needle. The piston is provided with a first channel, which is connected to the injection needle. The piston is slidably fitted in the injection cavity. The driving mechanism is connected to the injection cavity. The medium can enter the injection cavity and push the piston. When the piston slides to a second preset position, the medium can pass through the first channel and flow to the distal end of the injection needle.

3. The front end assembly according to claim 2, characterized in that: The driving mechanism includes a first tube body and a first elastic member, one end of the first elastic member is connected to the cavity wall forming the movable cavity, and the other end is connected to the proximal end of the syringe, the first tube body is connected to the proximal end of the syringe, the first tube body is used to drive the syringe to move toward the proximal end of the syringe, the first tube body can inject the medium into the syringe, and the medium pushes the injection needle out of the syringe.

4. The front end assembly according to claim 3, characterized in that: The front end assembly also includes a second tube body, which is redundantly arranged in the syringe barrel, and the distal end of the second tube body is connected to the first channel. The second tube body can inject a medium into the distal end of the injection needle.

5. The front end assembly according to claim 4, characterized in that: The second tube body is disposed inside the first tube body; And / or, the peripheral wall of the piston member is configured as a curved surface.

6. The front end assembly according to claim 3, characterized in that: The tube wall of the injection barrel is provided with a second channel, the second channel extends along the axis of the injection barrel, and opposite ends of the second channel penetrate the inner wall of the injection barrel; When the piston slides to the second preset position, the distal end of the injection needle extends out of the syringe barrel, the first channel is connected to the second channel, and the medium can pass through the second channel and flow into the first channel.

7. The front end assembly according to claim 6, characterized in that: The acupuncture mechanism further includes a second elastic member, the second elastic member is located in the injection cavity, one end of the second elastic member is connected to the inner wall of the injection barrel, and the other end is connected to the end of the piston member away from the injection needle, and the second elastic member is used to drive the piston member to move toward a side close to the proximal end of the injection barrel; And / or, a guide groove is formed on the inner wall of the injection barrel, the guide groove extends along the axis of the injection barrel, and a convex block is formed on the circumference of the piston member, and the convex block is embedded in the guide groove.

8. The front end assembly according to claim 1, characterized in that: The injection needle has an injection channel suitable for flowing the medium, and the cross-sectional area ratio between the injection channel and the injection cavity is 1:12-1:5; And / or, an opening is formed at the distal end of the injection barrel, the injection needle is slidably fitted in the opening, and chamfers are formed at opposite ends of the hole wall forming the opening.

9. An insertion portion, characterized in that: Comprising a front end assembly as described in any one of claims 1-8.

10. An endoscope, characterized in that: Comprising the insert portion as claimed in claim 9.

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