A medical endoscope

Abstract

The present application discloses a medical endoscope, which comprises an operating handle and an insertion part assembly, wherein the insertion part assembly comprises an insertion tube, a bending part, and a head end seat, wherein the bending part comprises a serpentine tube and a serpentine tube protection tube, and a traction rope is arranged between the head end seat and the operating handle, wherein two traction ropes are arranged, and the ends of the two traction ropes are respectively fixed on two opposite sides of the end surface of the serpentine tube close to one end of the head end seat, and the other ends of the two traction ropes pass through the insertion tube and penetrate into the operating handle; a sliding frame is arranged on the operating handle for sliding movement, and the ends of the two traction ropes away from the head end seat are both fixed on the sliding frame, and a fixed pulley is arranged on the operating handle for rotation, and one of the traction ropes is wound around the fixed pulley; the operating handle is located on a side of the sliding frame away from the insertion tube and is provided with a screw rod along the sliding direction of the sliding frame, and a knob is arranged on the end of the operating handle away from the insertion tube for rotation, and the screw rod passes through the knob and is threadedly connected with the knob. The present application has the effect of improving the convenience of using the endoscope.

Description

Technical Field

[0001] The present application relates to the field of medical endoscopic instruments, and in particular to a medical endoscope. Background Art

[0002] A medical endoscope is a medical device used to observe internal lesions in the human body. It can enter the human body through the body's natural cavities or through a small incision made during surgery, and through optical imaging or image sensors, medical staff can directly observe the patient's organs or tissues.

[0003] In the related art, an endoscope includes a handle and an insertion tube connected to the handle. An objective lens is provided at the end of the insertion tube away from the handle. A bendable section is provided on the side of the insertion tube close to the objective lens. A traction rope is provided between the objective lens and the handle. One end of the traction rope is fixed to the objective lens or the end of the bendable section close to the objective lens. One end of the traction rope passes through the insertion tube and extends into the handle. Generally, a connecting rod mechanism and a button that connects and drives the connecting rod mechanism to move are provided in the handle. The end of the traction rope that passes into the handle is connected to the connecting rod mechanism. In actual use, medical staff can drive the bendable section to bend by pressing the button.

[0004] With respect to the above-mentioned related technologies, the inventors believe that when medical staff need to observe a part of the patient's body for a long time, they need to press and hold the button for a long time and remain motionless, which is inconvenient to use and there is room for improvement. Summary of the invention

[0005] In order to improve the inconvenience of using endoscopes in the related art, the present application provides a medical endoscope.

[0006] The present application provides a medical endoscope, which adopts the following technical solution:

[0007] A medical endoscope, comprising an operating handle and an insertion part assembly, wherein the insertion part assembly 2 comprises an insertion tube, a bending part, and a head end seat 23, one end of the insertion tube is fixed on the operating handle 1, the bending part comprises a snake tube and a snake tube protection tube, one end of the snake tube is fixedly connected to the end of the insertion tube away from the operating handle, the snake tube protection tube is sleeved on the outside of the snake tube, a traction rope is arranged between the head end seat and the operating handle, two traction ropes are arranged, the ends of the two traction ropes are respectively fixed on the opposite sides of the end surface of the snake tube close to one end of the head end seat, and the other ends of the two traction ropes pass through the insertion tube and penetrate into the operating handle;

[0008] A sliding frame is slidably arranged on the operating handle. One end of the sliding trajectory of the sliding frame points to and is close to one end of the insertion tube away from the head end seat. The ends of the two traction ropes away from the head end seat are both fixed on the sliding frame. A fixed pulley is rotatably arranged on the operating handle. The fixed pulley is located on the side of the sliding trajectory of the sliding frame away from the insertion tube, and one of the traction ropes passes around the fixed pulley;

[0009] A screw rod is arranged on the operating handle on the side of the sliding frame away from the insertion tube along the sliding direction of the sliding frame. One end of the screw rod close to the sliding frame is fixed to the sliding frame. A knob is rotatably arranged at one end of the operating handle away from the insertion tube. The rotation axis of the knob is collinear with the axis of the screw rod, and the screw rod penetrates into the knob and is threadedly connected with the knob.

[0010] By adopting the above technical solution, in actual use, the staff rotates the knob. Through the threaded connection between the knob and the screw rod, the sliding frame will be driven to slide, thereby pulling the traction rope and finally pulling the snake bone tube; when the hand of the staff leaves the knob, the snake bone tube will maintain a fixed bending state. In this way, it helps to improve the convenience of using the endoscope.

[0011] Preferably, a chute is arranged on the operating handle along the sliding direction of the sliding frame. A part of the sliding frame is embedded in the chute and is slidably matched with the chute.

[0012] By adopting the above technical solution, the sliding frame is slidably matched with the chute, which helps to ensure the stability of the sliding action of the sliding frame.

[0013] Preferably, a limiting surface is formed on the operating handle. The limiting surface is located on the sliding path of the sliding frame; when the sliding frame slides towards the side of the limiting surface, the sliding frame stops sliding when it abuts against the limiting surface.

[0014] By adopting the above technical solution, being blocked by the limiting surface on the sliding path of the sliding frame helps to reduce the occurrence of over-pushing the sliding frame and causing damage to the endoscope.

[0015] Preferably, a tube groove is formed on the side of the operating handle close to the insertion tube. One end of the insertion tube close to the operating handle is embedded in the tube groove. A pressing plate is arranged on the operating handle. The pressing plate presses the insertion tube in the tube groove, and the pressing plate is locked and fixed on the operating handle by screws.

[0016] By adopting the above technical solution, embedding one end of the insertion tube close to the operating handle in the tube groove and pressing it by the pressing plate helps to ensure the reliability and stability of the installation of the insertion tube.

[0017] Preferably, the insertion tube is detachably and fixedly connected to the operating handle. Both of the two traction ropes include an inner handle section located on one side of the operating handle and an inner tube section located inside the insertion tube. The inner handle section and the inner tube section of any one of the traction ropes can be detachably and fixedly connected.

[0018] By adopting the above technical solution, after the endoscope is used, medical staff can detach the insertion tube from the operating handle and disconnect the traction ropes, so as to peel off the insertion tube part from the operating handle, and a new insertion tube part can be installed on the operating handle. In this way, it helps to reduce the use cost of the endoscope and helps to save resources.

[0019] Preferably, a first magnetic block is fixedly arranged at one end of the inner handle section of any one of the traction ropes close to the insertion tube, and a second magnetic block is fixedly arranged at one end of the inner tube section close to the operating handle.

[0020] By adopting the above technical solution, the connection between the inner tube section and the inner handle section of the traction rope is realized through the attraction of the first magnetic block and the second magnetic block, which helps to improve the convenience of assembling the insertion tube part and the operating handle part.

[0021] Preferably, a first positioning hole is opened from the outside to the inside on one side of the operating handle close to the insertion tube. The axis of the first positioning hole is parallel to the sliding direction of the sliding frame. An avoidance hole is opened on the bottom wall of the first positioning hole. The diameter of the avoidance hole is smaller than the diameter of the first positioning hole. The first magnetic block is embedded in the first positioning hole and slides in the first positioning hole along the axis of the first positioning hole. An elastic member is tightly arranged between the first magnetic block and the bottom wall of the first positioning hole;

[0022] Moreover, the first positioning hole, the avoidance hole, and the elastic member all correspond to the inner handle section one by one.

[0023] By adopting the above technical solution, the first magnetic block is placed in the first positioning hole, and through the cooperation of the rotating screw and the elastic member, the two first magnetic blocks can be pushed by the elastic member to the orifices of the two first positioning holes, thereby further improving the convenience of assembling the insertion tube part and the operating handle part.

[0024] Preferably, a connecting block is fixedly arranged at one end of the insertion tube close to the operating handle. A second positioning hole is opened along the axis of the port of the insertion tube close to the operating handle on the connecting block. The second magnetic block is embedded in the second positioning hole and slides in the second positioning hole, and the second positioning hole corresponds to the second magnetic block one by one.

[0025] By adopting the above technical solution, the two second magnetic blocks are limited in the two second positioning holes, further improving the convenience of assembling the insertion tube part and the operating handle part.

[0026] Preferably, a positioning groove is formed at one end of the operating handle close to the insertion tube, and the connecting block is fitted into the positioning groove; after the connecting block is inserted into the positioning groove, the two first positioning holes and the two second positioning holes are in one-to-one correspondence and coaxial.

[0027] By adopting the above technical solution, the connecting block is positioned by the positioning groove, so that the first positioning hole and the second positioning hole are quickly aligned, and the first magnetic block and the second magnetic block are quickly attracted to each other, further improving the convenience of assembling the insertion tube part and the operating handle part.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] By cooperating the knob and the screw rod to drive the sliding frame to slide, thereby pulling the traction rope and driving the bending part of the insertion tube to bend, which helps to improve the convenience of using the endoscope;

[0030] By means of the attraction of the first magnetic block and the second magnetic block to realize the connection between the inner section of the traction rope handle and the inner section of the tube, positioning the first magnetic block in the first positioning hole, positioning the second magnetic block in the second positioning hole, and positioning the connecting block by the positioning groove, thus greatly improving the convenience of assembling the insertion tube part and the operating handle part. Description of the Drawings

[0031] Figure 1 FIG. is an axonometric schematic diagram mainly showing the overall structure of the medical endoscope in the first embodiment;

[0032] Figure 2 FIG. is a schematic diagram mainly showing the structure of the snake bone tube in the first embodiment;

[0033] Figure 3 FIG. is an exploded schematic diagram mainly showing the structure of the driving assembly in the first embodiment;

[0034] Figure 4 FIG. is a schematic diagram mainly showing the overall structure of the medical endoscope in the second embodiment;

[0035] Figure 5 FIG. is an exploded schematic diagram mainly showing the connection structure between the insertion tube part and the operating handle part in the second embodiment.

[0036] Figure numerals: 1. operating handle; 11. mounting shell; 111. pipe groove; 112. pressure plate; 113. slide groove; 114. fixed pulley; 115. limiting surface; 12. shell cover; 13. first positioning hole; 131. avoidance hole; 14. positioning groove; 2. insertion part assembly; 21. insertion tube; 22. bending part; 221. snake bone tube; 222. snake bone tube protection tube; 23. head end seat; 24. connecting block; 241. second positioning hole; 3. traction rope; 31. handle inner section; 311. first magnetic block; 32. tube inner section; 321. second magnetic block; 4. driving assembly; 41. sliding frame; 411. protrusion; 42. screw; 43. knob; 431. turntable; 5. elastic member. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with the accompanying drawings.

[0038] The embodiment of the present application discloses a medical endoscope.

[0039] Embodiment 1:

[0040] Reference Figure 1 and Figure 2 The medical endoscope includes an operating handle 1 and an insertion assembly 2. The insertion assembly 2 includes an insertion tube 21, a bending portion 22, and a head end seat 23. One end of the insertion tube 21 is fixed to the operating handle 1. The bending portion 22 includes a snake tube 221 and a snake tube protection tube 222. One end of the snake tube 221 is fixedly connected to the end of the insertion tube 21 away from the operating handle 1. The snake tube protection tube 222 is sleeved on the outside of the snake tube 221. An objective lens and an illuminator are integrated in the head end seat 23, and the head end seat 23 is fixed to the end of the snake tube 221 away from the operating handle 1. The head end seat 23 is fixedly connected to the end of the snake tube 221 away from the operating handle 1. A traction rope 3 is connected between the head end seat 23 and the operating handle 1 (see Figure 3 ), and the operating handle 1 is provided with a driving component 4 for pulling the traction rope 3 and driving the bending part 22 to bend.

[0041] Specifically, see Figure 2 and Figure 3The operating handle 1 is hollow, and includes a mounting shell 11 and a shell cover 12. A mounting cavity is formed inside the mounting shell 11. The shell cover 12 closes the mounting cavity and is fixed to the mounting shell 11. A tube groove 111 is provided on the inner side of the mounting shell 11 near the insertion tube 21. The tube groove 111 is opened along the axis of the insertion tube 21 near one end of the operating handle 1. The end of the insertion tube 21 near the operating handle 1 penetrates into the mounting shell 11 and is embedded in the tube groove 111. A pressing plate 112 is also provided on the inner side of the mounting shell 11. In this embodiment, the pressing plate 112 is a hoop body, which is located on the side of the insertion tube 21 away from the tube groove 111 and presses against the insertion tube 21. The hoop body is fixed to the mounting shell 11 by screws, and can also be fixed to the mounting shell 11 by glue.

[0042] As shown in the figure, two traction ropes 3 are provided, and the ends of one side of the two traction ropes 3 pass through the insertion tube 21 and the snake tube 221 in sequence and are fixed to the two opposite sides of the end surface of the snake tube 221 near the head end seat 23, respectively. The other ends of the two traction ropes 3 pass through the insertion tube 21 and penetrate into the operating handle 1. The driving component 4 includes a sliding frame 41, and a slide groove 113 is reserved inside the mounting shell 11. The length direction of the slide groove 113 is parallel to the axis of the insertion tube 21 near one end of the mounting shell 11, and one end of the slide groove 113 is close to the end of the insertion tube 21 near the operating handle 1, and the other end of the slide groove 113 extends to the side of the operating handle 1 away from the insertion tube 21. The sliding frame 41 is partially embedded in the slide groove 113 and slides with the slide groove 113. A fixed pulley 114 is also rotatably provided in the mounting shell 11, and the fixed pulley 114 is located on the side of the slide groove 113 away from the insertion tube 21. The ends of the two traction ropes 3 that pass through the operating handle 1 are both fixedly connected to the sliding frame 41 , and any one of the traction ropes 3 is wound around the fixed pulley 114 .

[0043] The driving assembly 4 further includes a screw 42 and a knob 43. The screw 42 is located on the side of the sliding frame 41 away from the insertion tube 21. The axis of the screw 42 is parallel to the length direction of the slide slot 113. The sliding frame 41 includes a protrusion 411 arranged on one side thereof. The end of the screw 42 close to the sliding frame 41 is integrally formed with the protrusion 411. The knob 43 is located on the side of the screw 42 away from the sliding frame 41. The side of the knob 43 close to the screw 42 is integrally formed with a rotating disk 431. The rotating disk 431 is clamped between the mounting shell 11 and the shell cover 12, and the rotating disk 431 is rotatably connected to the operating handle 1 around its axis. The side of the screw 42 away from the sliding frame 41 penetrates the rotating disk 431 and the knob 43 in turn and is threadedly connected to the rotating disk 431 and the knob 43. In addition, a notch is formed on the side wall of the slide groove 113 close to the rotating disk 431 , and a side of the notch close to the insertion tube 21 is a limiting surface 115 . The limiting surface 115 is located on the side of the fixed pulley 114 away from the insertion tube 21 , and the protrusion 411 is located in the notch.

[0044] The implementation principle of a medical endoscope in an embodiment of the present application is as follows: In actual use, the knob 43 is rotated to make the screw 42 and the sliding frame 41 advance or retreat, and then the snake bone tube 221 is bent by driving two traction ropes 3. Specifically, when the sliding frame 41 advances or retreats, one of the traction ropes 3 will be tightened, and the other traction rope 3 will be relatively loose, thereby bending the snake bone tube 221. At the same time, when the sliding frame 41 is pushed towards the insertion tube 21, after the protrusion 411 of the sliding frame 41 abuts against the limiting surface 115, it will be blocked by the limiting surface 115, reducing the occurrence of the protrusion 411 damaging the fixed pulley 114 and reducing the occurrence of the protrusion 411 detaching from the screw 42.

[0045] Embodiment 2:

[0046] Referring to Figure 4 and Figure 5 This embodiment is different from the previous embodiment in that the insertion tube 21 is detachably and fixedly connected to the operation handle 1. Both traction ropes 3 include an inner handle section 31 on one side of the operation handle 1 and an inner tube section 32 located in the insertion tube 21. The inner handle section 31 and the inner tube section 32 of any one traction rope 3 can be detachably and fixedly connected.

[0047] Specifically, on the side of the operation handle 1 close to the insertion tube 21, a first positioning hole 13 is opened from outside to inside. The axis of the first positioning hole 13 is parallel to the sliding direction of the sliding frame 41. An avoidance hole 131 is opened on the bottom wall of the first positioning hole 13. The diameter of the avoidance hole 131 is smaller than the diameter of the first positioning hole 13. And two first positioning holes 13 are opened on the operation handle 1, and the avoidance holes 131 correspond to the first positioning holes 13 one by one. At one end of each of the two inner handle sections 31 close to the insertion tube 21, a first magnetic block 311 is fixedly connected. The two inner handle sections 31 respectively pass through the two avoidance holes 131 and into the two first positioning holes 13, and the two first magnetic blocks 311 are respectively embedded in the two first positioning holes 13. The two first magnetic blocks 311 are both slidably matched with the corresponding first positioning holes 13. And an elastic member 5 is tightly arranged between the first magnetic block 311 and the bottom wall of the first positioning hole 13. In this embodiment, the elastic member 5 is a compression spring. The inner handle section 31 passes through the compression spring, and the compression springs correspond to the inner handle sections 31 one by one.

[0048] Meanwhile, a connection block 24 is fixedly arranged at one end of the insertion tube 21 close to the operation handle 1. A second positioning hole 241 is formed in the connection block 24 along the axis of the end port of the insertion tube 21 close to the operation handle 1, and there are two second positioning holes 241 corresponding to the first positioning holes 13. Second magnetic blocks 321 are fixedly connected to the ends of both inner tube segments 32 close to the operation handle 1. The first magnetic block 311 and the second magnetic blocks 321 are magnetically attracted and matched. The two second magnetic blocks 321 are respectively embedded in the two second positioning holes 241, and the two second magnetic blocks 321 are both slidably matched with the second positioning holes 241. A positioning groove 14 is formed at one end of the operation handle 1 close to the insertion tube 21, and the connection block 24 is embedded and matched with the positioning groove 14.

[0049] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A medical endoscope, comprising an operating handle (1) and an insertion part assembly (2), the insertion part assembly (2) comprising an insertion tube (21), a bending part (22), and a head end seat (23), one end of the insertion tube (21) is fixed to the operating handle (1), the bending part (22) comprises a snake tube (221) and a snake tube protection tube (222), one end of the snake tube (221) is fixedly connected to an end of the insertion tube (21) away from the operating handle (1), the snake tube protection tube (222) is sleeved on the outside of the snake tube (221), a traction rope (3) is arranged between the head end seat (23) and the operating handle (1), and the characteristics are: There are two traction ropes (3), and the end parts of the two traction ropes (3) are respectively fixed on the opposite sides of the end face of the snake bone tube (221) close to the head end seat (23), and the other ends of the two traction ropes (3) pass through the insertion tube (21) and penetrate into the operating handle (1); A sliding frame (41) is slidably arranged on the operating handle (1), one end of the sliding trajectory of the sliding frame (41) points to and is close to the end of the insertion tube (21) away from the head end seat (23), and the ends of the two traction ropes (3) away from the head end seat (23) are both fixed on the sliding frame (41). A fixed pulley (114) is rotatably arranged on the operating handle (1), the fixed pulley (114) is located on the side of the sliding trajectory of the sliding frame (41) away from the insertion tube (21), and one of the traction ropes (3) passes around the fixed pulley (114); A screw rod (42) is arranged on the operating handle (1) on the side of the sliding frame (41) away from the insertion tube (21) along the sliding direction of the sliding frame (41). One end of the screw rod (42) close to the sliding frame (41) is fixed to the sliding frame (41). A knob (43) is rotatably arranged at the end of the operating handle (1) away from the insertion tube (21), the rotation axis of the knob (43) is collinear with the axis of the screw rod (42), and the screw rod (42) penetrates into the knob (43) and is threadedly connected with the knob (43); The insertion tube (21) is detachably and fixedly connected to the operating handle (1). The two traction ropes (3) both include an inner handle section (31) on one side of the operating handle (1) and an inner tube section (32) in the insertion tube (21). The inner handle section (31) and the inner tube section (32) of any one of the traction ropes (3) are detachably and fixedly connected; A first magnetic block (311) is fixedly arranged at one end of the inner handle section (31) of any one of the traction ropes (3) close to the insertion tube (21), and a second magnetic block (321) is fixedly arranged at one end of the inner tube section (32) close to the operating handle (1); A first positioning hole (13) is opened from the outside to the inside on the side of the operating handle (1) close to the insertion tube (21). The axis of the first positioning hole (13) is parallel to the sliding direction of the sliding frame (41). An avoidance hole (131) is opened on the bottom wall of the first positioning hole (13), and the diameter of the avoidance hole (131) is smaller than that of the first positioning hole (13). The first magnetic block (311) is embedded in the first positioning hole (13) and slides in the first positioning hole (13) along the axis of the first positioning hole (13). An elastic member (5) is tightly arranged between the first magnetic block (311) and the bottom wall of the first positioning hole (13); Moreover, the first positioning hole (13), the avoidance hole (131), and the elastic member (5) all correspond to the inner handle section (31) one by one.

2. The medical endoscope according to claim 1, characterized in that: A sliding groove (113) is arranged on the operating handle (1) along the sliding direction of the sliding frame (41). A part of the sliding frame (41) is embedded in the sliding groove (113) and is slidably matched with the sliding groove (113).

3. The medical endoscope according to claim 2, characterized in that: A limiting surface (115) is formed on the operation handle (1), and the limiting surface (115) is located on the sliding path of the sliding frame (41); when the sliding frame (41) slides towards the side of the limiting surface (115), the sliding frame (41) abuts against the limiting surface (115) and then stops sliding.

4. The medical endoscope according to claim 1, characterized in that: A pipe groove (111) is formed on one side of the operation handle (1) close to the insertion pipe (21). One end of the insertion pipe (21) close to the operation handle (1) is embedded in the pipe groove (111). A pressing plate (112) is arranged on the operation handle (1), and the pressing plate (112) presses the insertion pipe (21) tightly in the pipe groove (111), and the pressing plate (112) is locked and fixed on the operation handle (1) by screws.

5. A medical endoscope according to claim 1, characterized in that: A connecting block (24) is fixedly arranged at one end of the insertion pipe (21) close to the operation handle (1). A second positioning hole (241) is formed in the connecting block (24) along the axis of the end port of the insertion pipe (21) close to the operation handle (1). The second magnetic block (321) is embedded in the second positioning hole (241) and slides in the second positioning hole (241), and the second positioning holes (241) correspond to the second magnetic blocks (321) one by one.

6. The medical endoscope according to claim 5, wherein: A positioning groove (14) is formed at one end of the operation handle (1) close to the insertion pipe (21). The connecting block (24) is in an embedded fit with the positioning groove (14); after the connecting block (24) is embedded in the positioning groove (14), the two first positioning holes (13) correspond to the two second positioning holes (241) one by one and are coaxial.

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