A multi-directional endoscope

Abstract

The present invention belongs to the technical field of endoscopes, and specifically relates to a multi-directional guiding endoscope. Its technical scheme is: a multi-directional guiding endoscope, including an endoscope body, a catheter connected to the endoscope body, at least four pull wires evenly distributed in the endoscope body, and the other end of the pull wire is connected to the end of the catheter away from the endoscope body; a pulling mechanism is fixed on the pull wire, a guide rod is sleeved in the pulling mechanism, the guide rod is fixed in the endoscope body, a plurality of strip grooves are arranged on the endoscope body, and one end of the pulling mechanism extends from the strip groove. The present invention provides a multi-directional guiding endoscope with a simple pulling mechanism structure, convenient operation, and accurate and stable pulling.

Description

Technical Field

[0001] The invention belongs to the technical field of endoscopes, and in particular relates to a multi-directional guiding endoscope. Background Art

[0002] An endoscope is a commonly used medical device, which consists of a bendable part, a light source and a set of lenses. It enters the human body through the natural orifices of the human body or through a small incision made during surgery. When in use, the endoscope is introduced into the organ to be examined, and changes in the relevant parts can be directly observed. The quality of the image directly affects the effect of the endoscope and also marks the level of development of endoscopic technology. The earliest endoscopes were used for rectal examinations. The doctor inserted a hard tube into the patient's anus and observed the lesions of the rectum with the help of the light of a candle. The diagnostic data that can be obtained by this method is limited. Not only is the patient in great pain, but the instrument is also very hard, causing a great risk of perforation. Because of these shortcomings, endoscopic examinations have continued to be used and developed, and many different uses and different types of instruments have gradually been designed.

[0003] The utility model patent with patent application number CN201220463829.1 discloses a novel multi-directionally bendable endoscope control mechanism and its endoscope, wherein the novel multi-directionally bendable endoscope control mechanism comprises: a hose, a main shell, a base, a bending control device and a tension adjustment device; the tension adjustment device is arranged between the hose and the main shell, and the bending control device is connected to the movable control member on the hose through a cable; the motor on the bending control device is fixed to the base through a motor clamping spring covering its upper surface, a wire splitter is provided on the base, the wire splitter is arranged between the winding wheel and the tension adjustment device, a wire groove is provided on the wire splitter, a pressure plate is provided on the upper end surface of the wire splitter, and the cable passes through the wire splitter and enters the tension adjustment device; the present invention ensures that the motor will not be displaced due to force in the working state, and the wire splitter is provided with a wire groove, and a pressure plate is provided above it to prevent the cable from falling out, thereby ensuring the normal working state.

[0004] However, the pulling of the pull cable of the above-mentioned endoscope is relatively complicated, requiring the use of a specific wire splitter, a bending control device, and a tension adjustment device, and the operation is relatively complicated. When the catheter end of the endoscope is connected to multiple pull wires, the catheter end can be bent in various directions. In the prior art, the method of pulling the pull wire is relatively complicated, and the pulling end of the pull wire cannot guarantee smooth movement. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention aims to provide a multi-directional guiding endoscope with a simple pulling mechanism structure, convenient operation, and accurate and smooth pulling.

[0006] The technical solution adopted by the present invention is:

[0007] A multi-directional guiding endoscope comprises an endoscope body, a catheter is connected to the endoscope body, at least four pull wires are evenly distributed in the endoscope body, and the other end of the pull wire is connected to an end of the catheter away from the endoscope body; a pulling mechanism is fixed on the pull wire, a guide rod is sleeved in the pulling mechanism, the guide rod is fixed in the endoscope body, a plurality of strip grooves are arranged on the endoscope body, and one end of the pulling mechanism extends out from the strip groove.

[0008] Preferably, a spring is connected between the pulling mechanism and the endoscope body.

[0009] Preferably, a pulling sleeve is sleeved on the endoscope body, and a paddle for prying the pulling mechanism is arranged inside the pulling sleeve.

[0010] Preferably, a positioning step is provided in the pulling sleeve, a plurality of positioning grooves are provided on the positioning step, and one end of the pulling mechanism extending out of the endoscope body is engaged in the positioning groove.

[0011] Preferably, the pulling mechanism includes a sliding block, which is sleeved on the guide rod, one end of the pull wire is fixed on the sliding block, a toggle block and a snap block are fixed on the sliding block, both of which are located between the toggle plate and the positioning step, and the snap block is snapped in the positioning groove.

[0012] Preferably, the engaging block comprises an elastic rod, one end of which is fixed to the sliding block, and the other end of which is fixed with an engaging head, which is engaged in the positioning groove.

[0013] Preferably, the width of the dial plate is greater than the distance between two adjacent pulling mechanisms.

[0014] Preferably, the width of the dial plate is greater than the distance between two adjacent pulling mechanisms; the number of the positioning grooves is eight, and the number of the pulling mechanisms is four.

[0015] Preferably, both the upper and lower ends of the pulling sleeve are connected with covers.

[0016] Preferably, the pulling sleeve is provided with a handle step for convenient pulling.

[0017] The beneficial effects of the present invention are:

[0018] 1. At least four pull wires are evenly distributed in the endoscope body of the present invention, and a pulling mechanism is fixed on each pull wire. When the pulling mechanisms are operated separately, the corresponding pull wires pull the end of the catheter to bend, so the catheter can be bent in multiple directions, which is convenient for the catheter to move forward in all directions. The pulling mechanism is sleeved on the guide rod, so when the pulling mechanism is moved, the pulling mechanism always slides on the guide rod, ensuring the straight and smooth movement of the pulling mechanism. Correspondingly, the pull wire can move smoothly, and the movement amount of the pull wire can be accurately controlled. When the moving distance of the pull wire is accurately controlled, the bending degree of the catheter end can be controlled accordingly, making the forward direction of the catheter more accurate. The present invention only needs to move the pulling mechanism manually or through other mechanisms, which is convenient to operate, simple in structure, and easy to implement.

[0019] 2. In a natural state, the spring can push the pulling mechanism toward the direction close to the catheter, so that the pulling mechanism can overlap the end of the strip groove close to the catheter. At this time, the corresponding pull wire is not pulled, and the end of the catheter will not bend accordingly. When the spring pushes the pulling mechanism to the correct position, the position of the pull wire is determined accordingly, avoiding the situation where the pull wire is easily displaced in the event of accidental contact. Therefore, when the pulling mechanism is not operated, the position of the pull wire is accurate, and the end of the catheter will not have a bending deviation, ensuring that the bending degree of the end of the catheter is controllable.

[0020] 3. When the pulling sleeve is screwed to a certain position, the paddle covers one or more pulling mechanisms. When the pulling sleeve is pulled, the paddle inside the pulling sleeve pushes the corresponding pulling mechanism to move, and the corresponding pull wire is pulled. After the pull wire is pulled, the end of the catheter bends toward the direction of the pulled pull wire, thereby controlling the bending direction of the catheter. After adding the pulling sleeve, you only need to screw the pulling sleeve and then pull the pulling sleeve to pull the corresponding pulling mechanism and pull wire, which further simplifies the operation and achieves the purpose of labor saving.

[0021] 4. If several positioning grooves are set on the positioning step, and several pulling mechanisms are all engaged in the corresponding positioning grooves, then after the pulling sleeve is twisted, the end of the pulling mechanism extending out of the strip groove can bounce up and then be engaged in the corresponding positioning groove. At this time, the relative positions of each pulling mechanism and the dial plate are determined, which facilitates the dial plate to accurately dial the pulling mechanism, and avoids the situation where the pulling mechanism cannot be accurately dialed when the positioning groove is not set and the pulling mechanism rotates to the edge of the dial plate. After twisting the pulling collar, it can be accurately determined which pulling mechanisms are currently aligned with the dial plate to ensure accurate pulling of the wire, and the bending direction of the catheter end can be accurately determined and controlled.

[0022] 5. The sliding block can move linearly and stably on the guide rod, and the engaging block is engaged in the positioning groove, so the pulling sleeve can be accurately positioned. The toggle block and the engaging block are both located between the dial plate and the positioning step, so the dial plate can limit the toggle block, and the pulling mechanism is limited as a whole, so the engaging block can be accurately engaged in the positioning groove under the thrust of the dial plate. When the pulling sleeve is screwed, each toggle block is always limited by the dial plate, and the engaging block can first jump out of the initial positioning groove and then engage in the new positioning groove, so as to achieve accurate displacement of the pulling sleeve. Therefore, the present invention can easily determine the orientation and never accurately control the bending direction of the catheter end.

[0023] 6. The elastic rod can withstand certain bending and rebound. When the pulling sleeve is twisted, the elastic rod bends to a certain extent under the condition of being squeezed, so the locking head can smoothly escape from the positioning groove. When the locking head moves to a new positioning groove, the locking head can be engaged into the new positioning groove under the elastic force of the elastic rod. When the pulling sleeve stops twisting, the specific toggle block moves under the toggle plate of the pulling sleeve, and the corresponding pulling mechanism and the pull wire can be accurately pulled when the pulling sleeve is pulled. The pulling mechanism and the pulling sleeve can accurately rotate relative to each other to a certain position, and the control is more precise.

[0024] 7. If the width of the paddle is greater than the spacing between two adjacent pulling mechanisms, the paddle can pull the two pulling mechanisms at the same time, and the two adjacent pull wires are pulled at the same time, and the end of the catheter is bent toward the middle direction of the two pull wires. The paddle can also paddle only one pulling mechanism, and the corresponding pull wire pulls the end of the catheter to bend. In this way, the number of bending directions of the catheter end is twice the number of pull wires, which reduces the number of pull wires and pulling mechanisms accordingly, and simplifies the structure.

[0025] 8. There are eight positioning slots and four pulling mechanisms, so there are eight positioning directions for the pulling sleeve. The width of the paddle plate is greater than the spacing between two adjacent pulling mechanisms. When the two pulling mechanisms are aligned with the paddle plate, the pulling sleeve is moved, and the two adjacent pulling mechanisms are pulled at the same time, and the end of the catheter is bent toward the middle direction of the two pull wires. When a pulling mechanism is aligned with the paddle plate, the pulling sleeve paddle plate is moved, and the corresponding pull wire pulls the end of the catheter to bend. Only four pulling mechanisms and pull wires are provided to control the end of the catheter to bend in eight directions, simplifying the structure and facilitating control.

[0026] 9. The upper and lower ends of the pulling sleeve are connected with covers, which can seal the two ends of the pulling sleeve to prevent impurities from entering the pulling mechanism and preventing the impurities from causing the pulling mechanism to get stuck or damaged. The pulling sleeve covers the strip groove and the pulling mechanism to ensure that the pulling mechanism is not damaged.

[0027] 10. The handle step can facilitate the user to pull the pulling sleeve, which is convenient for operation. When the pulling sleeve is screwed to a suitable angle, hook the handle step with your hand and pull the handle step, and the pulling sleeve will move as a whole. The paddle in the pulling sleeve can poke the corresponding pulling mechanism to move, so that the end of the catheter can be pulled and bent by the corresponding pull wire, which is convenient and labor-saving to operate.

[0028] The beneficial effects of the present invention are not limited to this description. For better understanding, a more detailed description is given in the specific implementation section.

[0029] Additional advantages, purposes, and features of the present invention will be described in part in the following description, and will become apparent to those skilled in the art after studying the following, or may be learned from the practice of the present invention. The purposes and other advantages of the present invention may be achieved and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0030] Those skilled in the art will appreciate that the objectives and advantages that can be achieved with the present invention are not limited to the above specific description, and the above and other objectives that can be achieved by the present invention will be more clearly understood from the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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 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.

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 It is a partial structural diagram of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of pulling the sleeve;

[0035] Figure 4 It is a structural diagram of the pulling mechanism;

[0036] Figure 5 is a top view of a partial structure of the present invention;

[0037] Figure 6 is a cross-sectional view of the pulling sleeve;

[0038] Figure 7 It is the front view of the present invention.

[0039] In the figure: 1-endoscope body; 2-catheter; 3-pull wire; 4-pull mechanism; 5-spring; 6-pull sleeve; 11-strip groove; 41-sliding block; 42-sliding block; 43-clamping block; 61-sliding plate; 62-positioning step; 63-positioning groove; 64-cover; 65-handle step; 431-elastic rod; 432-clamping head. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Example 1

[0044] like Figure 1 and Figure 2 As shown, a multi-directional guiding endoscope comprises an endoscope body 1, to which a catheter 2 is connected, at least four pulling wires 3 are evenly distributed in the endoscope body 1, and the other end of the pulling wire 3 is connected to an end of the catheter 2 away from the endoscope body 1; a pulling mechanism 4 is fixed on the pulling wire 3, and a guide rod is sleeved in the pulling mechanism 4, and the guide rod is fixed in the endoscope body 1, and a plurality of strip grooves 11 are provided on the endoscope body 1, and one end of the pulling mechanism 4 extends out from the strip groove 11.

[0045] At least four pull wires 3 are evenly distributed in the endoscope body 1 of the present invention, and a pulling mechanism 4 is fixed on each pull wire 3. When the pulling mechanism 4 is operated respectively, the corresponding pull wire 3 pulls the end of the catheter 2 to bend, so that the catheter 2 can be bent in multiple directions, which is convenient for the catheter 2 to move forward in all directions. The pulling mechanism 4 is sleeved on the guide rod, so when the pulling mechanism 4 is moved, the pulling mechanism 4 always slides on the guide rod, ensuring that the pulling mechanism 4 moves smoothly in a straight line. Correspondingly, the pull wire 3 can move smoothly, and the movement amount of the pull wire 3 can be accurately controlled. When the moving distance of the pull wire 3 is accurately controlled, the bending degree of the end of the catheter 2 can be controlled accordingly, so that the forward direction of the catheter 2 is more accurate. The present invention only needs to move the pulling mechanism 4 manually or by other mechanisms, which is convenient to operate, simple in structure, and easy to implement.

[0046] Furthermore, a spring 5 is connected between the pulling mechanism 4 and the endoscope body 1. In a natural state, the spring 5 can push the pulling mechanism 4 toward the direction close to the catheter 2, so that the pulling mechanism 4 can overlap the end of the strip groove 11 close to the catheter 2. At this time, the corresponding pull wire 3 is not pulled, and the end of the catheter 2 will not bend accordingly. When the spring 5 pushes the pulling mechanism 4 to the correct position, the position of the pull wire 3 is determined accordingly, avoiding the situation where the pull wire 3 is easily displaced in the event of accidental contact. Therefore, when the pulling mechanism 4 is not operated, the position of the pull wire 3 is accurate, and the end of the catheter 2 will not have a bending deviation, ensuring that the bending degree of the end of the catheter 2 is controllable.

[0047] Example 2

[0048] like Figure 1 , Figure 2 , Figure 7 As shown, a multi-directional guiding endoscope comprises an endoscope body 1, to which a catheter 2 is connected, at least four pulling wires 3 are evenly distributed in the endoscope body 1, and the other end of the pulling wire 3 is connected to an end of the catheter 2 away from the endoscope body 1; a pulling mechanism 4 is fixed on the pulling wire 3, and a guide rod is sleeved in the pulling mechanism 4, and the guide rod is fixed in the endoscope body 1, and a plurality of strip grooves 11 are provided on the endoscope body 1, and one end of the pulling mechanism 4 extends out from the strip groove 11.

[0049] At least four pull wires 3 are evenly distributed in the endoscope body 1 of the present invention, and a pulling mechanism 4 is fixed on each pull wire 3. When the pulling mechanism 4 is operated respectively, the corresponding pull wire 3 pulls the end of the catheter 2 to bend, so that the catheter 2 can be bent in multiple directions, which is convenient for the catheter 2 to move forward in all directions. The pulling mechanism 4 is sleeved on the guide rod, so when the pulling mechanism 4 is moved, the pulling mechanism 4 always slides on the guide rod, ensuring that the pulling mechanism 4 moves smoothly in a straight line. Correspondingly, the pull wire 3 can move smoothly, and the movement amount of the pull wire 3 can be accurately controlled. When the moving distance of the pull wire 3 is accurately controlled, the bending degree of the end of the catheter 2 can be controlled accordingly, so that the forward direction of the catheter 2 is more accurate. The present invention only needs to move the pulling mechanism 4 manually or by other mechanisms, which is convenient to operate, simple in structure, and easy to implement.

[0050] Furthermore, a spring 5 is connected between the pulling mechanism 4 and the endoscope body 1. In a natural state, the spring 5 can push the pulling mechanism 4 toward the direction close to the catheter 2, so that the pulling mechanism 4 can overlap the end of the strip groove 11 close to the catheter 2. At this time, the corresponding pull wire 3 is not pulled, and the end of the catheter 2 will not bend accordingly. When the spring 5 pushes the pulling mechanism 4 to the correct position, the position of the pull wire 3 is determined accordingly, avoiding the situation where the pull wire 3 is easily displaced in the event of accidental contact. Therefore, when the pulling mechanism 4 is not operated, the position of the pull wire 3 is accurate, and the end of the catheter 2 will not have a bending deviation, ensuring that the bending degree of the end of the catheter 2 is controllable.

[0051] Furthermore, Figure 3 As shown, the endoscope body 1 is sleeved with a pulling sleeve 6, and a dial plate 61 for dialing the pulling mechanism 4 is arranged inside the pulling sleeve 6. When the pulling sleeve 6 is screwed to a certain position, the dial plate 61 covers the top of one or more pulling mechanisms 4. When the pulling sleeve 6 is pulled, the dial plate 61 inside the pulling sleeve 6 pushes the corresponding pulling mechanism 4 to move, and the corresponding pull wire 3 is pulled. After the pull wire 3 is pulled, the end of the catheter 2 bends toward the direction of the pulled pull wire 3, so as to control the bending direction of the catheter 2. After the pulling sleeve 6 is added, it is only necessary to screw the pulling sleeve 6 and then pull the pulling sleeve 6 to pull the corresponding pulling mechanism 4 and the pull wire 3, which further simplifies the operation and achieves the purpose of labor saving.

[0052] Furthermore, Figure 6As shown, a positioning step 62 is provided in the pulling sleeve 6, and a plurality of positioning grooves 63 are provided on the positioning step 62, and one end of the pulling mechanism 4 extending out of the endoscope body 1 is engaged in the positioning groove 63. The positioning step 62 is provided with a plurality of positioning grooves 63, and then a plurality of pulling mechanisms 4 are all engaged in the corresponding positioning grooves 63. After the pulling sleeve 6 is screwed, the end of the pulling mechanism 4 extending out of the strip groove 11 can bounce up and then be engaged in the corresponding positioning groove 63. At this time, the relative positions of each pulling mechanism 4 and the dial plate 61 are determined, so that the dial plate 61 can accurately dial the pulling mechanism 4, and avoid the situation that the pulling mechanism 4 cannot be accurately dialed when the positioning groove 63 is not provided and the pulling mechanism 4 rotates to the edge position of the dial plate 61. After screwing the pulling ring, it can be accurately determined which pulling mechanisms 4 are currently aligned with the dial plate 61, ensuring that the pulling accurately pulls the wire 3, and the bending direction of the end of the catheter 2 can be accurately determined and controlled.

[0053] Furthermore, Figure 4 and Figure 5 As shown, the pulling mechanism 4 includes a sliding block 41, which is sleeved on the guide rod, one end of the pull wire 3 is fixed on the sliding block 41, and a toggle block 42 and a snap block 43 are fixed on the sliding block 41. The toggle block 42 and the snap block 43 are both located between the toggle plate 61 and the positioning step 62, and the snap block 43 is snapped into the positioning groove 63.

[0054] The sliding block 41 can move linearly and stably on the guide rod, and the engaging block 43 is engaged in the positioning groove 63, so the pulling sleeve 6 can be accurately positioned. The toggle block 42 and the engaging block 43 are both located between the dial plate 61 and the positioning step 62, so the dial plate 61 can limit the toggle block 42, and the pulling mechanism 4 is limited as a whole, so the engaging block 43 can be accurately engaged in the positioning groove 63 under the thrust of the dial plate 61. When the pulling sleeve 6 is screwed, each toggle block 42 is always limited by the dial plate 61, and the engaging block 43 can first jump out of the initial positioning groove 63 and then engage in the new positioning groove 63, so as to achieve accurate displacement of the pulling sleeve 6. Therefore, the present invention can conveniently determine the orientation and never accurately control the bending direction of the end of the catheter 2.

[0055] Furthermore, the engaging block 43 includes an elastic rod 431 , one end of which is fixed to the sliding block 41 , and a engaging head 432 is fixed to the other end of the elastic rod 431 , and the engaging head 432 is engaged in the positioning groove 63 .

[0056] The elastic rod 431 can withstand certain bending and rebound. When the pulling sleeve 6 is screwed, the engaging head 432 is squeezed and the elastic rod 431 is bent to a certain extent, so that the engaging head 432 can smoothly escape from the positioning groove 63. When the engaging head 432 moves into a new positioning groove 63, the engaging head 432 can be engaged into the new positioning groove 63 under the elastic force of the elastic rod 431. When the pulling sleeve 6 is stopped, the specific toggle block 42 moves below the toggle plate 61 of the pulling sleeve 6, and the corresponding pulling mechanism 4 and the pull wire 3 can be accurately pulled when the pulling sleeve 6 is pulled. The pulling mechanism 4 and the pulling sleeve 6 can accurately rotate relative to each other to a certain position, and the control is more precise.

[0057] Furthermore, the upper and lower ends of the pulling sleeve 6 are connected with a cover 64. The upper and lower ends of the pulling sleeve 6 are connected with a cover 64, and the cover 64 can seal the two ends of the pulling sleeve 6 to prevent impurities from entering the pulling mechanism 4, and prevent the impurities from causing the pulling mechanism 4 to be stuck or damaged. The pulling sleeve 6 covers the strip groove 11 and the pulling mechanism 4 to ensure that the pulling mechanism 4 is not damaged.

[0058] Furthermore, the pulling sleeve 6 is provided with a handle step 65 for easy pulling. The handle step 65 can facilitate the user to pull the pulling sleeve 6, which is convenient for operation. When the pulling sleeve 6 is screwed to a suitable angle, the handle step 65 is hooked by hand, and then the handle step 65 is pulled, and the pulling sleeve 6 moves as a whole. The paddle 61 in the pulling sleeve 6 can paddle the corresponding pulling mechanism 4 to move, so that the end of the catheter 2 can be pulled and bent by the corresponding pull wire 3, which is convenient and labor-saving to operate.

[0059] Example 3

[0060] like Figure 1 , Figure 2 , Figure 7 As shown, a multi-directional guiding endoscope comprises an endoscope body 1, to which a catheter 2 is connected, at least four pulling wires 3 are evenly distributed in the endoscope body 1, and the other end of the pulling wire 3 is connected to an end of the catheter 2 away from the endoscope body 1; a pulling mechanism 4 is fixed on the pulling wire 3, and a guide rod is sleeved in the pulling mechanism 4, and the guide rod is fixed in the endoscope body 1, and a plurality of strip grooves 11 are provided on the endoscope body 1, and one end of the pulling mechanism 4 extends out from the strip groove 11.

[0061] At least four pull wires 3 are evenly distributed in the endoscope body 1 of the present invention, and a pulling mechanism 4 is fixed on each pull wire 3. When the pulling mechanism 4 is operated respectively, the corresponding pull wire 3 pulls the end of the catheter 2 to bend, so that the catheter 2 can be bent in multiple directions, which is convenient for the catheter 2 to move forward in all directions. The pulling mechanism 4 is sleeved on the guide rod, so when the pulling mechanism 4 is moved, the pulling mechanism 4 always slides on the guide rod, ensuring that the pulling mechanism 4 moves smoothly in a straight line. Correspondingly, the pull wire 3 can move smoothly, and the movement amount of the pull wire 3 can be accurately controlled. When the moving distance of the pull wire 3 is accurately controlled, the bending degree of the end of the catheter 2 can be controlled accordingly, so that the forward direction of the catheter 2 is more accurate. The present invention only needs to move the pulling mechanism 4 manually or by other mechanisms, which is convenient to operate, simple in structure, and easy to implement.

[0062] Furthermore, a spring 5 is connected between the pulling mechanism 4 and the endoscope body 1. In a natural state, the spring 5 can push the pulling mechanism 4 toward the direction close to the catheter 2, so that the pulling mechanism 4 can overlap the end of the strip groove 11 close to the catheter 2. At this time, the corresponding pull wire 3 is not pulled, and the end of the catheter 2 will not bend accordingly. When the spring 5 pushes the pulling mechanism 4 to the correct position, the position of the pull wire 3 is determined accordingly, avoiding the situation where the pull wire 3 is easily displaced in the event of accidental contact. Therefore, when the pulling mechanism 4 is not operated, the position of the pull wire 3 is accurate, and the end of the catheter 2 will not have a bending deviation, ensuring that the bending degree of the end of the catheter 2 is controllable.

[0063] Furthermore, Figure 3 As shown, the endoscope body 1 is provided with a pulling sleeve 6, and a dial plate 61 for dialing the pulling mechanism 4 is provided inside the pulling sleeve 6. When the pulling sleeve 6 is screwed to a certain position, the dial plate 61 covers the top of one or more pulling mechanisms 4. When the pulling sleeve 6 is pulled, the dial plate 61 inside the pulling sleeve 6 pushes the corresponding pulling mechanism 4 to move, and the corresponding pull wire 3 is pulled. After the pull wire 3 is pulled, the end of the catheter 2 bends toward the direction of the pulled pull wire 3, so as to control the bending direction of the catheter 2. After the pulling sleeve 6 is added, it is only necessary to screw the pulling sleeve 6 and then pull the sleeve 6 to pull the corresponding pulling mechanism 4 and the pull wire 3, which further simplifies the operation and achieves the purpose of labor saving.

[0064] Furthermore, Figure 6As shown, a positioning step 62 is provided in the pulling sleeve 6, and a plurality of positioning grooves 63 are provided on the positioning step 62, and one end of the pulling mechanism 4 extending out of the endoscope body 1 is engaged in the positioning groove 63. The positioning step 62 is provided with a plurality of positioning grooves 63, and then a plurality of pulling mechanisms 4 are all engaged in the corresponding positioning grooves 63. After the pulling sleeve 6 is screwed, the end of the pulling mechanism 4 extending out of the strip groove 11 can bounce up and then be engaged in the corresponding positioning groove 63. At this time, the relative positions of each pulling mechanism 4 and the dial plate 61 are determined, so that the dial plate 61 can accurately dial the pulling mechanism 4, and avoid the situation that the pulling mechanism 4 cannot be accurately dialed when the positioning groove 63 is not provided and the pulling mechanism 4 rotates to the edge position of the dial plate 61. After screwing the pulling ring, it can be accurately determined which pulling mechanisms 4 are currently aligned with the dial plate 61, ensuring that the pulling accurately pulls the wire 3, and the bending direction of the end of the catheter 2 can be accurately determined and controlled.

[0065] Furthermore, Figure 4 and Figure 5 As shown, the pulling mechanism 4 includes a sliding block 41, which is sleeved on the guide rod, one end of the pull wire 3 is fixed on the sliding block 41, and a toggle block 42 and a snap block 43 are fixed on the sliding block 41. The toggle block 42 and the snap block 43 are both located between the toggle plate 61 and the positioning step 62, and the snap block 43 is snapped into the positioning groove 63.

[0066] The sliding block 41 can move linearly and stably on the guide rod, and the engaging block 43 is engaged in the positioning groove 63, so the pulling sleeve 6 can be accurately positioned. The toggle block 42 and the engaging block 43 are both located between the dial plate 61 and the positioning step 62, so the dial plate 61 can limit the toggle block 42, and the pulling mechanism 4 is limited as a whole, so the engaging block 43 can be accurately engaged in the positioning groove 63 under the thrust of the dial plate 61. When the pulling sleeve 6 is screwed, each toggle block 42 is always limited by the dial plate 61, and the engaging block 43 can first jump out of the initial positioning groove 63 and then engage in the new positioning groove 63, so as to achieve accurate displacement of the pulling sleeve 6. Therefore, the present invention can conveniently determine the orientation and never accurately control the bending direction of the end of the catheter 2.

[0067] Furthermore, the engaging block 43 includes an elastic rod 431 , one end of which is fixed to the sliding block 41 , and a engaging head 432 is fixed to the other end of the elastic rod 431 , and the engaging head 432 is engaged in the positioning groove 63 .

[0068] The elastic rod 431 can withstand certain bending and rebound. When the pulling sleeve 6 is screwed, the engaging head 432 is squeezed and the elastic rod 431 is bent to a certain extent, so that the engaging head 432 can smoothly escape from the positioning groove 63. When the engaging head 432 moves into a new positioning groove 63, the engaging head 432 can be engaged into the new positioning groove 63 under the elastic force of the elastic rod 431. When the pulling sleeve 6 is stopped, the specific toggle block 42 moves below the toggle plate 61 of the pulling sleeve 6, and the corresponding pulling mechanism 4 and the pull wire 3 can be accurately pulled when the pulling sleeve 6 is pulled. The pulling mechanism 4 and the pulling sleeve 6 can accurately rotate relative to each other to a certain position, and the control is more precise.

[0069] Furthermore, the width of the dial plate 61 is greater than the spacing between two adjacent pulling mechanisms 4; the number of the positioning grooves 63 is eight, and the number of the pulling mechanisms 4 is four. The number of the positioning grooves 63 is eight, and the number of the pulling mechanisms 4 is four, so there are eight positioning directions for the pulling sleeve 6. The width of the dial plate 61 is greater than the spacing between two adjacent pulling mechanisms 4. When two pulling mechanisms 4 are aligned with the dial plate 61, the pulling sleeve 6 is moved, and the two adjacent pulling mechanisms 4 are pulled at the same time, and the end of the catheter 2 is bent toward the middle direction of the two pull wires 3. When a pulling mechanism 4 is aligned with the dial plate 61, the pulling sleeve 6 dial plate 61 is moved, and the corresponding pull wire 3 pulls the end of the catheter 2 to bend. Only four pulling mechanisms 4 and pull wires 3 are provided, so that the end of the catheter 2 can be controlled to bend in eight directions, which simplifies the structure and facilitates control.

[0070] Furthermore, the upper and lower ends of the pulling sleeve 6 are connected with a cover 64. The upper and lower ends of the pulling sleeve 6 are connected with a cover 64, and the cover 64 can seal the two ends of the pulling sleeve 6 to prevent impurities from entering the pulling mechanism 4, and prevent the impurities from causing the pulling mechanism 4 to be stuck or damaged. The pulling sleeve 6 covers the strip groove 11 and the pulling mechanism 4 to ensure that the pulling mechanism 4 is not damaged.

[0071] Furthermore, the pulling sleeve 6 is provided with a handle step 65 for easy pulling. The handle step 65 can facilitate the user to pull the pulling sleeve 6, which is convenient for operation. When the pulling sleeve 6 is screwed to a suitable angle, the handle step 65 is hooked by hand, and then the handle step 65 is pulled, and the pulling sleeve 6 moves as a whole. The paddle 61 in the pulling sleeve 6 can paddle the corresponding pulling mechanism 4 to move, so that the end of the catheter 2 can be pulled and bent by the corresponding pull wire 3, which is convenient and labor-saving to operate.

[0072] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A multi-directional endoscope, characterized in that: The endoscope comprises an endoscope body (1), the endoscope body (1) is connected to a catheter (2), at least four pull wires (3) are evenly distributed in the endoscope body (1), and the other end of the pull wire (3) is connected to an end of the catheter (2) away from the endoscope body (1); a pulling mechanism (4) is fixed on the pull wire (3), a guide rod is sleeved in the pulling mechanism (4), and the guide rod is fixed in the endoscope body (1); a plurality of strip grooves (11) are provided on the endoscope body (1), and one end of the pulling mechanism (4) extends out from the strip groove (11); a spring (5) is connected between the pulling mechanism (4) and the endoscope body (1); a pulling sleeve (6) is sleeved on the endoscope body (1), and a dial plate (61) for dialing the pulling mechanism (4) is provided in the pulling sleeve (6).

2. A multi-directional endoscope according to claim 1, characterized in that: A positioning step (62) is provided in the pulling sleeve (6), a plurality of positioning grooves (63) are provided on the positioning step (62), and one end of the pulling mechanism (4) extending out of the endoscope body (1) is engaged in the positioning groove (63).

3. A multi-directional endoscope according to claim 2, characterized in that: The pulling mechanism (4) comprises a sliding block (41), the sliding block (41) is sleeved on the guide rod, one end of the pull wire (3) is fixed on the sliding block (41), a toggle block (42) and a snap block (43) are fixed on the sliding block (41), the toggle block (42) and the snap block (43) are both located between the toggle plate (61) and the positioning step (62), and the snap block (43) is snapped into the positioning groove (63).

4. A multi-directional endoscope according to claim 3, characterized in that: The engaging block (43) comprises an elastic rod (431), one end of the elastic rod (431) is fixed to the sliding block (41), and the other end of the elastic rod (431) is fixed with an engaging head (432), which is engaged in the positioning groove (63).

5. The multi-directional endoscope according to claim 1, characterized in that: The width of the shifting plate (61) is greater than the distance between two adjacent pulling mechanisms (4).

6. The multi-directional endoscope according to claim 1, characterized in that: The width of the shifting plate (61) is greater than the distance between two adjacent pulling mechanisms (4); the number of the positioning grooves (63) is eight, and the number of the pulling mechanisms (4) is four.

7. The multi-directional endoscope according to claim 1, characterized in that: The upper and lower ends of the pulling sleeve (6) are both connected to sealing covers (64).

8. A multi-directional endoscope according to any one of claims 1 to 7, characterized in that: The pulling sleeve (6) is provided with a handle step (65) for easy pulling.

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