Guidewires, catheters and endoscopes

Abstract

The present invention discloses a guidewire catheter and an endoscope, and relates to the technical field of medical devices. The guidewire catheter comprises: a tube body and at least two light-emitting devices. A guide hole is provided through the tube body, and the guide hole is used to pass a guidewire. The light emitting direction of the light-emitting device is the same as the axial direction of the guide hole, and at least two light-emitting devices are evenly arranged on the end face of the tube body. The light-emitting device is used to emit light to a target object and form a light spot on the target object to define a target area. The operator can judge whether the guidewire catheter is aligned with the nipple through the above-mentioned target area, and then can quickly and accurately perform the "nipple intubation" operation. The guidewire catheter provided in the embodiment of the present application can assist the operator in quickly and accurately performing the "nipple intubation" operation, reducing the operator's operating difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a guidewire catheter and an endoscope. Background Art

[0002] Endoscope is a commonly used medical device. It is an inspection instrument that can directly enter the natural channels of the human body and provide the operator with sufficient diagnostic information to treat diseases.

[0003] Duodenoscope is an instrument in the endoscope used to examine the common bile duct or the common pancreatic duct. When it is necessary to examine the common bile duct or the common pancreatic duct, a "nipple intubation" operation must be performed first, that is, the operator needs to first insert the guide wire of the endoscope into the duodenal papilla, and then extend the guide wire into the common bile duct or the common pancreatic duct.

[0004] During the examination, the operator inserts the guide wire into the common bile duct or the common pancreatic duct based on clinical experience and operating skills. Since the "nipple cannulation" operation is difficult, it may take multiple "nipple cannulation" operations to accurately insert the guide wire into the common bile duct or the common pancreatic duct during this process. This is not only very time-consuming, but also causes great damage to the patient's organs.

[0005] Therefore, providing an endoscope that can assist the operator in locating the nipple to reduce the difficulty of the operator in performing the "nipple intubation" operation is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0006] The invention discloses a guidewire catheter and an endoscope, so as to solve the technical problem that the operator has great difficulty in performing "nipple cannulation" operation in the endoscope in the related art.

[0007] In order to solve the above problems, the present invention adopts the following technical solutions:

[0008] On the one hand, an embodiment of the present application provides a guidewire catheter for an endoscope, the guidewire catheter comprising: a tube body and at least two light-emitting devices. The tube body is provided with a guide hole, the guide hole is used to pass a guidewire. The light emitting direction of the light-emitting device is the same as the axial direction of the guide hole, at least two of the light-emitting devices are evenly arranged on the end face of the tube body, and the light-emitting device is used to emit light to a target object and form a light spot on the target object to define a target area.

[0009] In one embodiment, the light emitting device includes a first light emitting unit, the first light emitting unit is used to emit collimated light and form a first light spot on the target object, and there is a gap between adjacent first light spots.

[0010] In one embodiment, the light emitting device includes a second light emitting unit, the second light emitting unit is used to emit non-collimated light and form a second light spot on the target object, and the second light spot is also used to define the distance between the guidewire catheter and the target object.

[0011] In one embodiment, the light-emitting device also includes a first light-emitting unit, which is used to emit collimated light and form a first light spot on the target object. There is a gap between adjacent first light spots. When the distance between the guidewire catheter and the target object is a standard distance, the diameter of the first light spot is smaller than the diameter of the second light spot.

[0012] In one embodiment, the first light emitting unit and the second light emitting unit are coaxially arranged or spaced apart;

[0013] And / or, the first light emitting unit and / or the second light emitting unit is an optical fiber;

[0014] And / or, the first light emitting unit and / or the second light emitting unit are integrated into the tube body, and are linearly arranged along the axial direction of the tube body or spirally arranged along the axial direction of the tube body.

[0015] In one embodiment, the first light-emitting unit is a holmium laser fiber, and at least three first light-emitting units are provided.

[0016] In one embodiment, the light emitting parts of the light emitting device are evenly distributed along the outer periphery of the guide hole.

[0017] In one embodiment, the first light spot is one of a circular light spot, an annular light spot, a square light spot or a triangular light spot;

[0018] And / or, the second light spot is one of a circular light spot, an annular light spot or a square light spot.

[0019] In one embodiment, the distal end surface of the tube body is a conical end surface, and the light emitting portion of the light emitting device is arranged on the conical end surface.

[0020] On the other hand, an embodiment of the present application further provides an endoscope, comprising a body, an instrument mouth and a guidewire catheter as described above, wherein the instrument mouth is arranged on the body, and the guidewire catheter is connected to the instrument mouth.

[0021] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0022] The guidewire catheter provided in the embodiment of the present application defines a target area by arranging a light-emitting device on the end face of the tube body, and arranging the light-emitting device to emit light to the target object and form a light spot on the target object, thereby assisting the operator in locating the position of the nipple, and reducing the difficulty of the operator's operation. The operator can determine whether the guidewire catheter is aligned with the nipple through the above-mentioned target area, and can then quickly and accurately perform the "nipple intubation" operation. The problem that the operator has great difficulty in the "nipple intubation" operation in the prior art is solved. When the operator inserts the guidewire into the common bile duct or the common pancreatic duct, it is necessary to perform multiple "nipple intubation" operations before the guidewire can be accurately inserted into the common bile duct or the common pancreatic duct, resulting in greater damage to the patient's organs. At the same time, applying the guidewire catheter provided in the embodiment of the present application to the endoscope can also solve the problem in the prior art that the operator has great difficulty in the "nipple cannulation" operation. When the operator inserts the guidewire into the common bile duct or the common pancreatic duct, it is necessary to perform multiple "nipple cannulation" operations before the guidewire can be accurately inserted into the common bile duct or the common pancreatic duct, resulting in greater damage to the patient's organs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 A schematic structural diagram of an endoscope in one embodiment of the present application is shown.

[0025] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0026] Figure 3 A schematic structural diagram of a guidewire catheter in one embodiment of the present application is shown.

[0027] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0028] Figure 5 A working principle diagram of the second light spot in an embodiment of the present application is shown.

[0029] Figure 6 A diagram showing the working principle of an endoscope in an embodiment of the present application is shown.

[0030] Figure 7 A diagram showing a usage scenario of an endoscope in one embodiment of the present application is shown.

[0031] Figure 8A schematic diagram showing a coordination manner of the first light spot and the second light spot in an embodiment of the present application is shown.

[0032] Fig. 9 A schematic diagram showing another coordination manner of the first light spot and the second light spot in an embodiment of the present application is shown.

[0033] In the figure: 1-endoscope, 10-body, 20-instrument nozzle, 30-guidewire catheter, 310-tube body, 311-guide hole, 312-distal end surface, 320-light emitting device, 321-first light emitting unit, 321a-first light spot, 322-second light emitting unit, 322a-second light spot, 2-guidewire, 3-target object;

[0034] M3-duodenal papilla;

[0035] S-ray path;

[0036] L - standard distance. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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".

[0040] The inventive concept of the present application is described here:

[0041] Endoscope is a commonly used medical device. It is an inspection instrument that can directly enter the natural channels of the human body and provide the operator with sufficient diagnostic information to treat diseases.

[0042] Duodenoscope is an instrument in the endoscope used to examine the common bile duct or the common pancreatic duct. When it is necessary to examine the common bile duct or the common pancreatic duct, a "nipple intubation" operation must be performed first, that is, the operator needs to first insert the guide wire of the endoscope into the nipple, and then extend the guide wire into the common bile duct or the common pancreatic duct.

[0043] However, during the examination, the operator usually inserts the endoscope into the common bile duct or the common pancreatic duct based on clinical experience and operating skills. Since the "nipple cannulation" operation is difficult, multiple "nipple cannulation" operations may be required during this process to accurately insert the guide wire into the common bile duct or the common pancreatic duct. This is not only very time-consuming, but also causes great damage to the patient's organs.

[0044] Specifically, one of the difficulties is that although the operator can control the endoscope to find the duodenal papilla and make it appear within the operator's field of view, it is difficult to grasp the distance and relative position between the guidewire catheter and the duodenal papilla based solely on the operator's clinical experience.

[0045] Based on this, the inventor provides a guidewire catheter and endoscope, which emit light and form a light spot in the patient's intestine, and use the light spot to assist the operator to accurately locate the duodenal papilla, and use the light spot to assist the operator to correct the orientation and direction of the guidewire catheter to determine the relative position relationship between the guidewire catheter and the duodenal papilla, thereby assisting the operator to quickly and accurately extend the endoscope into the common bile duct or the common pancreatic duct. Figures 1 to 9 , the guidewire catheter and endoscope provided by the present application are described in detail through specific embodiments and their application scenarios.

[0046] See also Figure 1 An embodiment of the present application provides an endoscope 1, which can be used to assist the operator in locating the duodenal papilla, and further assist the operator in quickly and accurately passing the guidewire catheter 30 through the duodenal papilla and extending it into the common bile duct or the common pancreatic duct.

[0047] Please also see Figure 1 and Figure 2In this embodiment, the endoscope 1 may include a body 10, an instrument mouth 20 and a guidewire catheter 30. The instrument mouth 20 may be disposed on the body 10 and used to provide an instrument channel for the guidewire catheter 30 to pass through. The guidewire catheter 30 may be connected to the instrument mouth 20 and may extend from the distal end of the body 10 so that the operator can control the guidewire catheter 30 to move forward or backward in the patient's body. Specifically, the endoscope 1 in the present application is mainly used in the duodenum, so the guidewire catheter 30 may extend from the side wall of the distal end of the body 10 to facilitate the operator to perform surgery on the patient. It should be noted that the embodiment of the present application does not limit the use scenario of the endoscope 1, nor does it limit the specific structure and form of the body 10 and the instrument mouth 20, which may be specifically arranged according to actual conditions or prior art.

[0048] Please also see Figure 3 and Figure 4 In this embodiment, the guidewire catheter 30 may include a tube body 310 and a light emitting device 320, wherein at least two light emitting devices 320 are provided. The tube body 310 may be provided with a guide hole 311, which may be used to pass the guidewire 2, and in some cases, the guide hole 311 may also be used as an injection channel for a contrast agent. The tube body 310 may serve as a carrier of the light emitting device 320, and the light emitting device 320 may be provided on the tube body 310.

[0049] Specifically, the light emitting direction of the light emitting device 320 is the same as the axial direction of the guide hole 311. The light emitting device 320 can be used to emit light to the target object 3 and form a light spot on the target object 3 to define the target area. It should be noted that the above-mentioned target object 3 can refer to the patient's intestines, and the target area can refer to the patient's duodenal papilla. In other words, please also refer to Figure 5 In this embodiment, the light emitting device 320 can be used to emit light to the intestinal surface of the patient and form a light spot on the intestinal surface, and circle the duodenal papilla within the area surrounded by the light spot to assist the operator in accurately locating the duodenal papilla.

[0050] The light emitting device 320 can be evenly arranged on the end surface of the tube body 310, for example, see Figure 2 As shown, in this embodiment, when the tube body 310 is a regular columnar structure, the end face of the tube body 310 refers to the surface of the distal end of the tube body 310. For example, in other embodiments, when the tube body 310 is an irregular structure, such as a protruding structure on the side wall of the tube body 310, the end face of the tube body 310 can refer to the distal surface of the tube body 310 or the distal surface of the protruding structure. The embodiment of the present application does not limit the specific position of the light emitting device 320, as long as the light emitting device 320 can emit light to the target object 3 and form a light spot on the target object 3.

[0051] In a specific embodiment, the light-emitting device 320 may include a first light-emitting unit 321, which may be used to emit collimated light and form a first light spot 321a on the target object 3. In this embodiment, there may be multiple first light spots 321a, and there are gaps between adjacent first light spots 321a. It should be noted that the embodiment of the present application does not limit the formation method of the first light spot 321a. For example, multiple first light spots 321a can be emitted by one light-emitting unit. For another example, each light-emitting unit emits only one first light spot 321a. In this case, the light-emitting device 320 may include multiple first light-emitting units 321. The specific method can be set according to the actual situation and is not limited here.

[0052] The embodiment of the present application does not limit the specific size and number of the first light spot 321a. Since the length of the duodenal papilla is about 3 mm on average and the width is about 4.4 mm on average, in this embodiment, the size of the first light spot 321a can be set to be smaller, for example, the diameter of the first light spot 321a can be set to between 1 mm and 2 mm, so as to avoid covering the duodenal papilla and affecting the judgment of the operator, and at the same time, it can also play a role in defining the target area. It should be noted that the aforementioned definition includes but is not limited to: passing, circling, covering, etc. For example, in one embodiment, there are at least two first light spots 321a, and the line connecting the two first light spots 321a passes through the duodenal papilla to play a role in locating the duodenal papilla. In addition, the first light spot 321a can also have 3 or more, and the line connecting the first light spots 321a can enclose a target area. The operator can control the movement of the guidewire catheter 30 so that the duodenal papilla is located in the target area, thereby achieving the positioning of the duodenal papilla.

[0053] In another specific embodiment, the light emitting device 320 may include a second light emitting unit 322, which is used to emit non-collimated light and form a second light spot 322a on the target object 3. The second light spot 322a is not only used to define the target area, but also used to define the distance between the guidewire catheter 30 and the target object 3. The embodiment of the present application also does not limit the formation method of the second light spot 322a. For details, please refer to the formation method of the first light spot 321a, which will not be repeated here.

[0054] The embodiment of the present application also does not limit the specific size and number of the second light spot 322a. In this embodiment, the size of the second light spot 322a can be set larger. For example, the diameter of the second light spot 322a can be set between 1.5mm-3mm, so that the second light spot 322a can cover the duodenal papilla. It should be noted that since the second light emitting unit 322 emits non-collimated light, the diameter of the second light spot 322a will decrease as the distance between the guidewire catheter 30 and the target object 3 approaches. Therefore, the diameter of the second light spot 322a is the diameter size when the guidewire catheter 30 and the target object 3 are at a standard distance. The aforementioned standard distance is the optimal distance for the operator to perform surgery. The present application does not limit the optimal distance, and it can be set specifically according to the operator's habits.

[0055] It should be noted that since the light emitted by the first light-emitting unit 321 and the second light-emitting unit 322 is different, in this embodiment, the second light-emitting unit 322 emits non-collimated light, so there is a difference between the coordination mode between the first light spot 321a and the duodenal papilla compared to the coordination mode between the second light spot 322a and the duodenal papilla.

[0056] Specifically, see Figure 5 It should be noted that the circles in the figure all represent the second light spot 322a, wherein the large solid circle represents the light spot size when the distance between the guidewire catheter 30 and the target object 3 is far, and the small dotted circle represents the light spot size when the distance between the guidewire catheter 30 and the target object 3 is close. Since the second light emitting unit 322 emits non-collimated light, the size of the second light spot 322a in the operator's field of view will change with the distance between the guidewire catheter 30 and the target object 3. When the distance between the guidewire catheter 30 and the target object 3 is smaller, the second light spot 322a in the operator's field of view is smaller, and vice versa. Since the size of the duodenal papilla in the operator's field of view does not change, in the operator's field of view, the smaller the second light spot 322a is, the closer the distance between the guidewire catheter 30 and the duodenal papilla is, and vice versa. When the second light-emitting unit 322 emits a second light spot 322a, the operator can control the guidewire catheter 30 and cover the second light spot 322a on the duodenal papilla, and the target area can be defined. When the second light-emitting unit 322 emits multiple second light spots 322a, the operator can control the guidewire catheter 30 and surround the second light spot 322a around the periphery of the duodenal papilla, and the target area can be defined. Compared with performing the "nipple intubation" operation on the duodenal papilla within the entire field of view, it is less difficult to perform the "nipple intubation" operation on the duodenal papilla within the target area circled by the second light spot 322a, and the operator is more accurate when performing the "nipple intubation" operation.

[0057] Also, see Figure 6 and Figure 7 ,exist Figure 6 In FIG. 3 , the dotted line may represent the light path S of the first light emitting unit 321 and the second light emitting unit 322. Generally, defining a standard distance L between the guidewire catheter 30 and the duodenal papilla may make it easier for the operator to perform the “papillary intubation” operation. Since the sizes of the duodenal papillae of different patients are different, as long as the distance between the guidewire catheter 30 and the duodenal papilla is constant, the size of the second light spot 322a is determined. Therefore, the operator can judge the distance between the guidewire catheter 30 and the duodenal papilla by the size of the duodenal papilla in the field of view, which can further assist the operator in locating the position of the duodenal papilla and the distance between the duodenal papilla and the guidewire catheter 30. In other words, the relative position relationship between the guidewire catheter 30 and the duodenal papilla has been determined at this time. Since the guidewire 2 used by the operator when performing the "nipple intubation" operation is extended from the guidewire catheter 30, when the duodenal papilla is positioned at the center of the operator's field of view, the guidewire 2 is also facing the duodenal papilla, which makes it easier for the operator to perform the "nipple intubation" operation quickly and accurately.

[0058] The present embodiment does not limit the specific method for the operator to determine the distance between the guidewire catheter 30 and the duodenal papilla. Please refer to Figure 5 In addition to the above judgment method, multiple second light spots 322a can be set. When multiple adjacent second light spots 322a are gradually enlarged to be tangent to each other, it indicates that the distance between the guidewire catheter 30 and the duodenal papilla is roughly at the standard distance. It should be noted that since the intestinal environment of the patient is usually not a regular plane, as long as most of the adjacent second light spots 322a are tangent to each other, it can be considered that the distance between the guidewire catheter 30 and the duodenal papilla is the standard distance.

[0059] In another specific implementation, please also refer to Figure 8 and Fig. 9 The light emitting device 320 may include a first light emitting unit 321 and a second light emitting unit 322. The specific structure and form of the first light emitting unit 321 and the second light emitting unit 322 may refer to the above content and will not be described in detail here. In this embodiment, when the distance between the guidewire catheter 30 and the target object 3 is the standard distance, the diameter of the first light spot 321a is smaller than the diameter of the second light spot 322a.

[0060] Please refer to Figure 8In this embodiment, the first light spot 321a and the second light spot 322a can cooperate with each other to assist the operator in locating the duodenal papilla M3. For example, the operator can first turn on the first light-emitting unit 321 and form the first light spot 321a on the target object 3, first use the first light spot 321a to define the target area, circle the duodenal papilla M3 within the target area, and then turn on the second light-emitting unit 322 and form the second light spot 322a within the target area of ​​the target object 3 to determine the specific distance between the guidewire catheter 30 and the duodenal papilla M3. It should be noted that the specific position of the target area is not shown in the figure, and the area surrounded by the line of the first light spot 321a is the target area.

[0061] It should be noted that, in this embodiment, the first light spot 321a can further cooperate with the second light spot 322a. It is understandable that, since the environment in the intestine is relatively dim, even with lighting, it is very energy-consuming to focus on the duodenal papilla M3, the first light spot 321a, and the second light spot 322a for a long time. Therefore, in one embodiment, the second light spot 322a can cooperate with the first light spot 321a to determine the specific distance between the guidewire catheter 30 and the duodenal papilla M3.

[0062] Specifically, see Fig. 9 , the operator can first turn on the first light-emitting unit 321, and form a first light spot 321a on the target object 3. The first light spot 321a is used to define the target area, and the duodenal papilla M3 is circled in the target area. At this time, the user can shift his attention away from the duodenal papilla M3. Then the second light-emitting unit 322 is turned on, and a second light spot 322a is formed on the target object 3. At this time, the user can focus on the first light spot 321a and the second light spot 322a. The second light spot 322a is located in the target area, and the operator can control the movement of the guidewire catheter 30. When the second light spot 322a at least partially covers one of the first light spots 321a, and at least partially covers another first light spot 321a adjacent to the aforementioned first light spot 321a, it is considered that the distance between the guidewire catheter 30 and the duodenal papilla M3 is the standard distance at this time, which can further reduce the operator's operating difficulty.

[0063] In this embodiment, the first light emitting unit 321 and the second light emitting unit 322 can be coaxially arranged or spaced apart. Specifically, when the first light emitting unit 321 and the second light emitting unit 322 are coaxially arranged, the first light emitting unit 321 and the second light emitting unit 322 can be overlapped, and since the size of the second light spot 322a is larger than that of the first light emitting unit 321, the first light emitting unit 321 can be arranged on a side closer to the distal end. When the first light emitting unit 321 and the second light emitting unit 322 are spaced apart, the light emitting parts of the first light emitting unit 321 and the second light emitting unit 322 can be evenly distributed along the outer periphery of the guide hole 311, so that the space of the distal end surface 312 of the tube body 310 can be fully utilized.

[0064] In one embodiment, the distal end surface 312 of the tube body 310 may be a conical end surface, specifically a dome conical surface, so that the damage to the patient caused by the tube body 310 touching the inner wall of the intestine can be avoided or reduced. Further, in this embodiment, the guide hole 311 may be located at the distal end of the light emitting portion of the light emitting device 320. That is to say, in this embodiment, when the operator controls the movement of the guide wire 2, the guide wire 2 is always within the operator's field of view during the process of extending from the guide hole 311, which can further facilitate the operator to perform the "nipple intubation" operation.

[0065] It should be noted that the embodiment of the present application does not limit the specific shapes of the first light spot 321a and the second light spot 322a. For example, in one embodiment, the first light-emitting unit 321 can be set to emit one of a circular light spot, an annular light spot, a square light spot or a triangular light spot, which can be set according to actual conditions and is not limited here. Similarly, in another embodiment, the second light-emitting unit 322 can be set to emit one of a circular light spot, an annular light spot or a square light spot, which can be set according to actual conditions. The operator can choose a combination of first light spots 321a and second light spots 322a of different shapes according to personal habits to define a target area on the target object 3 and define the distance between the target area and the guidewire catheter 30.

[0066] In one embodiment, the brightness of the first light spot 321a and the second light spot 322a can be set differently. For example, the brightness of the first light spot 321a can be set to be smaller than the brightness of the second light spot 322a. This can facilitate the operator to more intuitively judge the relative position of the first light spot 321a and the second light spot 322a, and further assist the operator in judging the distance between the guidewire catheter 30 and the target object 3.

[0067] In another embodiment, the colors of the first light spot 321a and the second light spot 322a can also be set to be different, for example, the first light spot 321a can be set to red, and the second light spot 322a can be set to blue. These two colors are more eye-catching and can also help the operator to judge the distance between the guidewire catheter 30 and the target object 3. It should be noted that the embodiment of the present application does not limit the specific colors of the first light spot 321a and the second light spot 322a, and can be set according to actual conditions.

[0068] In addition, the embodiments of the present application do not limit the specific forms of the first light-emitting unit 321 and the second light-emitting unit 322. For example, in one embodiment, the first light-emitting unit 321 and / or the second light-emitting unit 322 can be set as optical fibers. Since the core diameter of the optical fiber is generally 9 μm-10 μm, the overall volume of the first light-emitting unit 321 and / or the second light-emitting unit 322 can be made smaller, which is beneficial to reduce the size of the entire guidewire catheter 30, so as to facilitate the operator to operate the guidewire catheter 30 to move in the patient's body.

[0069] Furthermore, in a more specific embodiment, the first light-emitting unit 321 can be configured as a holmium laser fiber. Since the holmium laser has strong energy, the holmium laser can be used for lithotripsy. Specifically, when the operator controls the guidewire catheter 30 to enter the common bile duct or the common pancreatic duct and finds stones, the holmium laser can be directly used for lithotripsy, which improves the convenience of the operator's operation. It should be noted that when only the first light-emitting unit 321 is needed for positioning, the energy of the holmium laser fiber can be adjusted and the capacity of the holmium laser fiber can be reduced to avoid damage to the patient.

[0070] The embodiment of the present application also does not limit the connection method between the first light-emitting unit 321 and / or the second light-emitting unit 322 and the tube body 310. For example, in one embodiment, the first light-emitting unit 321 and / or the second light-emitting unit 322 can be directly set on the surface of the tube body 310. For example, in another embodiment, the first light-emitting unit 321 and / or the second light-emitting unit 322 can be set to a long strip structure (similar to a linear structure), and the first light-emitting unit 321 and / or the second light-emitting unit 322 can be integrated into the tube body 310. It can be understood that an optical fiber usually has a core, a cladding wrapped outside the core, and a buffer layer wrapped outside the cladding. In this embodiment, the tube body 310 can be used as a buffer layer, which can not only reduce the volume of the entire guidewire catheter 30, but also reduce the cost.

[0071] Further, in one embodiment, the first light emitting unit 321 and / or the second light emitting unit 322 may be linearly arranged along the axial direction of the tube body 310, so that the length of the first light emitting unit 321 and / or the second light emitting unit 322 may be reduced, thereby helping to reduce the cost of the guidewire catheter 30. In another embodiment, the first light emitting unit 321 and / or the second light emitting unit 322 may be spirally arranged along the axial direction of the tube body 310, that is, in this embodiment, the first light emitting unit 321 and / or the second light emitting unit 322 may be in a braided wire structure, so that the structural strength of the first light emitting unit 321 and / or the second light emitting unit 322 may be improved, and the possibility of damage to the first light emitting unit 321 and / or the second light emitting unit 322 due to twisting may be avoided or reduced.

[0072] In summary, the guidewire catheter 30 provided in the embodiment of the present application, by setting the light emitting device 320 on the end face of the tube body 310, and setting the light emitting device 320 to emit light to the target object 3 and form a light spot on the target object 3, so as to define the target area, thereby assisting the operator to locate the position of the duodenal papilla, and reducing the operator's operating difficulty. The operator can judge whether the guidewire catheter 30 is aligned with the duodenal papilla through the above-mentioned target area, and then can quickly and accurately perform the "nipple intubation" operation. The problem that the operator has great difficulty in the "nipple intubation" operation in the prior art is solved. When the operator inserts the guidewire 2 into the common bile duct or the common pancreatic duct, it is necessary to perform multiple "nipple intubation" operations to accurately insert the guidewire 2 into the common bile duct or the common pancreatic duct, resulting in greater damage to the patient's organs. Applying the guidewire catheter 30 provided in the embodiment of the present application to the endoscope 1 can also solve the problem in the prior art that it is difficult for the operator to perform the "nipple cannulation" operation. When the operator inserts the guidewire 2 into the common bile duct or the common pancreatic duct, it is necessary to perform multiple "nipple cannulation" operations before the operator can accurately insert the guidewire 2 into the common bile duct or the common pancreatic duct, which causes greater damage to the patient's organs.

[0073] 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.

[0074] 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.

[0075] 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 guidewire catheter (30) for use with an endoscope (1), characterized in that: The guidewire catheter (30) comprises: A tube body (310), wherein the tube body (310) is provided with a guide hole (311) running through it, and the guide hole (311) is used to pass a guide wire (2); and at least two light emitting devices (320), the light emitting direction of the light emitting devices (320) being the same as the axial direction of the guide hole (311), the at least two light emitting devices (320) being evenly arranged on the end surface of the tube body (310), the light emitting devices (320) being used to emit light toward a target object (3) and form a light spot on the target object (3) to define a target area; The light emitting device (320) comprises a second light emitting unit (322), the second light emitting unit (322) being used to emit non-collimated light and form a second light spot (322a) on the target object (3), the second light spot (322a) being further used to define the distance between the guidewire catheter (30) and the target object (3); The light emitting device (320) further comprises a first light emitting unit (321), the first light emitting unit (321) being used to emit collimated light and form a first light spot (321a) on a target object (3), there being gaps between adjacent first light spots (321a), and when the distance between the guidewire catheter (30) and the target object (3) is a standard distance (L), the diameter of the first light spot (321a) is smaller than the diameter of the second light spot (322a).

2. The guidewire catheter (30) according to claim 1, characterized in that: The first light-emitting unit (321) and the second light-emitting unit (322) are coaxially arranged or spaced apart; And / or, the first light-emitting unit (321) and / or the second light-emitting unit (322) is an optical fiber; And / or, the first light-emitting unit (321) and / or the second light-emitting unit (322) are integrated into the tube body (310), and are linearly arranged along the axial direction of the tube body (310) or spirally arranged along the axial direction of the tube body (310).

3. The guidewire catheter (30) according to claim 2, characterized in that: The first light-emitting unit (321) is a holmium laser optical fiber, and at least three first light-emitting units (321) are provided.

4. The guidewire catheter (30) according to any one of claims 1 to 3, characterized in that: The light emitting parts of the light emitting device (320) are evenly distributed along the outer periphery of the guide hole (311).

5. The guidewire catheter (30) according to claim 1, characterized in that: The first light spot (321a) is one of a circular light spot, an annular light spot, a square light spot or a triangular light spot; And / or, the second light spot (322a) is one of a circular light spot, an annular light spot or a square light spot.

6. The guidewire catheter (30) according to claim 1, characterized in that: The distal end surface (312) of the tube body (310) is a conical end surface, and the light emitting portion of the light emitting device (320) is arranged on the conical end surface.

7. An endoscope (1), characterized in that: It comprises a body (10), an instrument mouth (20), and a guidewire catheter (30) according to any one of claims 1 to 6, wherein the instrument mouth (20) is arranged on the body (10), and the guidewire catheter (30) is connected to the instrument mouth (20).

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