A device for visual positioning of tiny lesions

Abstract

The present invention relates to the technical field of medical devices, and particularly to a visual positioning device for micro lesions, comprising: a sleeve having a first end and a second end, the first end having an emission port; a push slider disposed within the inner circle of the sleeve; a launch spring sleeved on the outer circle of the push slider, with the first end of the launch spring connected to the end of the push slider adjacent to the emission port and the second end of the launch spring connected to the sleeve; a positioning body disposed at the end of the push slider adjacent to the emission port, the positioning body including a luminescent material that can emit light under the excitation of a light source; a clamping assembly disposed within the sleeve and located on the side of the launch spring away from the emission port, the clamping assembly being used to limit the push slider in the energy storage position. The present invention is at least beneficial to improving the positioning accuracy of lesions in minimally invasive surgery.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a device for visually locating tiny lesions. Background Art

[0002] For surgery of benign and malignant gastrointestinal tumors, accurate positioning of the lesion is the basis for successful surgery. However, clinically, a considerable number of early gastrointestinal cancers, benign tumors (those that cannot be removed by endoscopy), small endogenous stromal tumors and other lesions are small, and it is difficult to accurately locate the lesions by vision or touch alone. Before the widespread promotion of laparoscopic technology, one or several metal titanium clips were often placed next to the lesion under endoscopy before surgery to assist in locating the lesion. During surgery, the lesion can be accurately located by touching the metal titanium clips with hands. Nowadays, laparoscopic minimally invasive surgery is widely used in gastrointestinal surgery, and its efficacy is also widely recognized. It is a good indication for laparoscopic minimally invasive surgery for lesions such as early gastrointestinal cancer, benign tumors (those that cannot be removed by endoscopy), and small endogenous stromal tumors. For such lesions, the surgeon lacks direct touch of the hand during laparoscopic surgery. Even if the lesion has been assisted in locating the lesion by endoscopic placement of titanium clips before surgery, it is difficult to determine the location of the lesion by touching the intestinal segment between instruments, which limits the accuracy of lesion positioning in laparoscopic minimally invasive surgery. Summary of the invention

[0003] In view of this, the present invention aims to provide a visual positioning device for tiny lesions, which is at least helpful in improving the positioning accuracy of lesions in minimally invasive surgery.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] The present invention provides a visual positioning device for micro-lesions, comprising: a sleeve, the sleeve having a first end and a second end, the first end having a launch port; a push slider, the push slider is arranged on the inner ring of the sleeve; a launch spring, the launch spring is sleeved on the outer ring of the push slider, and the first end of the launch spring is connected to an end of the push slider adjacent to the launch port, and the second end of the launch spring is connected to the sleeve; a positioning body, the positioning body is arranged at the end of the push slider adjacent to the launch port, the positioning body includes a luminescent material, and the luminescent material can emit light under the excitation of a light source; a clamping assembly, the clamping assembly is arranged in the sleeve, and the clamping assembly is located on a side of the launch spring away from the launch port, and the clamping assembly is used to limit the push slider in a power storage position; wherein, when the push slider is in the power storage position, the launch spring is in a compressed state, and after the clamping assembly releases the push slider, the launch spring drives the push slider to move toward the launch port, so as to push the positioning body out of the launch port and launch it to the target position.

[0006] Furthermore, the luminescent material can emit infrared light under the excitation of a visible light source or an ultraviolet light source.

[0007] Further, a hydrogel is provided on the positioning body, and the positioning body is adhered to the target position through the hydrogel.

[0008] Further, the sleeve includes a guiding sleeve and a connecting sleeve connected to each other. An emission port is provided at one end of the guiding sleeve away from the connecting sleeve; a part of the pushing slider is arranged inside the guiding sleeve, and the remaining part of the pushing slider is arranged inside the connecting sleeve. An emission spring is arranged inside a part of the guiding sleeve; an annular protrusion is provided on the inner circumference at one end of the guiding sleeve connected to the connecting sleeve, and the second end of the emission spring abuts against the annular protrusion.

[0009] Further, the pushing slider includes a connecting rod, an engaging part and an emitting part. The engaging part and the emitting part are respectively fixed to opposite ends of the connecting rod. The outer diameter of the emitting part and the outer diameter of the engaging part are both larger than the outer diameter of the connecting rod. The emission spring is sleeved on the outer circumference of the connecting rod, and the first end of the emission spring abuts against the emitting part.

[0010] Further, at least one set of two guiding grooves arranged oppositely is provided on the inner wall of the guiding sleeve. A sliding part cooperating with the guiding grooves is provided on the side surface of the emitting part. When the pushing slider slides inside the guiding sleeve, the sliding part is located inside the corresponding guiding groove and slides along the corresponding guiding groove.

[0011] Further, the engaging assembly includes a limiting slider, a second spring, a fixing ring, a reversing ring and a guide wire; a notch is provided on the inner wall of the connecting sleeve. The second spring is arranged inside the notch and is connected to the limiting slider. One end of the guide wire is connected to the limiting slider through the fixing ring. The reversing ring is arranged on the inner wall of the connecting sleeve. The guide wire passes through the reversing ring and extends in a direction away from the emission port; wherein, when the guide wire is not stressed, the pushing slider is pushed in a direction away from the emission port. After the engaging part moves to the side of the limiting slider away from the emission port, the second spring applies a pressing force to the limiting slider, and the limiting slider limits the engaging part to limit the pushing slider at the energy storage position; when the guide wire is pulled in a direction away from the emission port, the guide wire drives the limiting slider to perform an off-axis movement along the notch, and the limiting slider releases the engaging part to enable the engaging assembly to release the pushing slider.

[0012] Further, the engaging assembly further includes a guiding shaft. The guiding shaft is arranged inside the connecting sleeve. A guiding hole is provided on the guiding shaft. The guide wire passes through the reversing ring and the guiding hole in sequence and extends in a direction away from the emission port.

[0013] Further, the micro-lesion visual positioning device further includes a catheter and a working handle. A handle is provided on the working handle. The catheter is connected to one end of the connecting sleeve away from the guiding sleeve. The working handle is connected to one end of the catheter away from the connecting sleeve. The guide wire passes through the catheter and is connected to the handle.

[0014] Compared with the prior art, the present invention can achieve the following beneficial effects: The micro-lesion visual positioning device provided by the present invention does not need to use traditional titanium clips, solving the problem that the titanium clips cannot be clamped and positioned due to the angle. The present invention emits a positioning body including a luminescent material to the target position where the lesion is located, and uses a light source to excite the luminescent material to emit light during the operation, so as to accurately locate the position where the positioning body is located, and then locate the lesion, which is beneficial to improving the positioning accuracy of the lesion in minimally invasive surgery. Moreover, the micro-lesion visual positioning device provided by the present invention can be reused. After the first use, it can be reused after strict disinfection and replacement of the positioning body, and has high economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the micro-lesion visual positioning device according to the embodiment of the present invention;

[0017] Figure 2 is a schematic structural diagram of the positioning body according to the embodiment of the present invention;

[0018] Figure 3 is a partial schematic structural diagram of the micro-lesion visual positioning device according to the embodiment of the present invention;

[0019] Figure 4 is a schematic structural diagram of the engaging assembly of the micro-lesion visual positioning device according to the embodiment of the present invention;

[0020] Figure 5 is a schematic structural diagram of the connection sleeve and the limit slider of the micro-lesion visual positioning device according to the embodiment of the present invention.

[0021] Explanation of the reference numerals: 101, emission port; 3, push slider; 4, emission spring; 2, positioning body; 20, engaging assembly; 201, hydrogel; 1, guiding sleeve; 5, connection sleeve; 103, annular protrusion; 32, connecting rod; 33, engaging part; 31, emission part; 102, guiding groove; 310, sliding part; 6, limit slider; 7, second spring; 8, fixing ring; 10, reversing ring; 9, guide wire; 61, first groove; 62, second groove; 11, guiding shaft; 110, guiding hole; 12, catheter; 13, working handle; 14, handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] After analysis, it is found that the existing positioning methods using titanium clips mainly include the following two: The first method: During the operation, the doctor locates the position of the titanium clip by touch and then determines the lesion position; The second method: When it is difficult to locate the titanium clip by touch, it is necessary to insert a gastroscope for auxiliary positioning. The above two methods have the following problems: During laparoscopic surgery, the surgeon lacks the direct tactile sensation of the hand. Even if the lesion has been assisted in positioning by inserting a titanium clip through an endoscope before surgery, it is difficult to judge the position of the lesion only by touching the intestinal segment between the instruments; Intraoperative endoscopy (inserting a gastroscope) prolongs the operation time, increases the operating cost of the operating room, and the anesthesia time of the patient is also correspondingly prolonged; Since the gastroscope is always connected to an external device, a large amount of gas will be injected into the intestinal cavity during the operation, resulting in obvious intestinal dilation, occupying the abdominal cavity space, increasing the difficulty of laparoscopic surgery, and even forcing a conversion to open surgery; For colonic lesions, the patient's position has been placed before intraoperative colonoscopy, and some or even all of the trocar punctures have been completed. At this time, if the positioning does not match the preoperative assessment, it is necessary to reselect the position and trocar puncture position, increasing unnecessary procedures and not being able to well reflect the principle of minimally invasive surgery; Intraoperative endoscopy requires the joint cooperation of professional endoscopists, nurses and disinfection teams, consuming human resources; Intraoperative endoscopy requires the operating room to be equipped with a dedicated full set of endoscopic equipment.

[0023] To solve the above problems, the present invention provides a visual positioning device for micro-lesions, which ejects a positioning body to the lesion or a position adjacent to the lesion, and fixes the positioning body at the target position through hydrogel. The positioning body includes a luminescent material, and the luminescent material can emit infrared light under the excitation of ultraviolet light or visible light for realizing the positioning of the lesion. The visual positioning device for micro-lesions provided by the present invention does not require the traditional titanium clip positioning, which is beneficial to solving the positioning problems such as the inability to clamp due to the angle of the existing titanium clip, and is beneficial to improving the positioning accuracy of the lesion.

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the following further details the present invention in conjunction with the attached drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation to the present invention.

[0025] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0028] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0029] Reference Figures 1 to 5The present invention provides a visual positioning device for micro-lesions, comprising: a sleeve, the sleeve having a first end and a second end, the first end having a launch port 101; a push slider 3, the push slider 3 being arranged on the inner ring of the sleeve; a launch spring 4, the launch spring 4 being sleeved on the outer ring of the push slider 3, and the first end of the launch spring 4 being connected to an end of the push slider 3 adjacent to the launch port 101, and the second end of the launch spring 4 being connected to the sleeve; a positioning body 2, the positioning body 2 being arranged on the end of the push slider 3 adjacent to the launch port 101, and the positioning body 2 comprising Luminescent material, which can emit light under the stimulation of a light source; a snap-fit ​​assembly 20, which is arranged in the sleeve, and the snap-fit ​​assembly 20 is located on the side of the launch spring 4 away from the launch port 101, and the snap-fit ​​assembly 20 is used to limit the push slider 3 in the power storage position; wherein, when the push slider 3 is in the power storage position, the launch spring 4 is in a compressed state, and after the snap-fit ​​assembly 20 releases the push slider 3, the launch spring 4 drives the push slider 3 to move toward the launch port 101, so as to push the positioning body 2 out of the launch port 101 and launch it to the target position. wherein, the positioning body 2 is placed on the push slider 3, and the push slider 3 can reciprocate along the sleeve, and the launch spring 4 provides kinetic energy to the push slider 3, which is used to realize the launch of the positioning body 2. The target position can be the position where the lesion on the inner wall of the gastrointestinal tract is located or the position relatively close to the lesion, and the visual positioning device for micro-lesions provided by the present invention can be used for positioning the lesions in minimally invasive gastrointestinal surgery.

[0030] Furthermore, the luminescent material can emit infrared light under the excitation of a visible light source or an ultraviolet light source, that is, the luminescent material can emit a light beam with a wavelength greater than 700 nm under the irradiation of a light beam with a wavelength less than 700 nm.

[0031] In some embodiments, the positioning body 2 includes a main body and a luminescent material, the luminescent material is sprayed on the surface of the main body, and the material of the main body may be silicone; in other embodiments, the positioning body 2 is a mixture of silicone and the luminescent material; in yet other embodiments, the positioning body 2 includes a main body, a luminescent material and silicone, and the silicone and powdered luminescent material are mixed and coated on the surface of the main body to form the positioning body 2.

[0032] For further reference, Figure 2 The positioning body 2 has a hydrogel 201 , and the positioning body 2 is bonded to the target position through the hydrogel 201 .

[0033] It should be noted that after the positioning body 2 is bonded to the target position, a corresponding light source can be used for irradiation. After irradiation, the positioning body 2 can be quickly and accurately located, thereby achieving the location of the lesion. The positioning body 2 is removed along with the lesion during surgical resection of the lesion. In addition, the irradiation form of the light source can be direct irradiation into the body, introduction into the body through optical fiber, or direct irradiation outside the body.

[0034] In some embodiments, the luminescent material is a near-infrared phosphor with good chemical stability, non-toxicity, strong excitation beam penetration ability, and high luminous efficiency, that is, a NIR (near-infrared) fluorescent agent. The specific material may include Ca2LuHf2Al3O 12 :Cr 3+ . Using the near-infrared phosphor as the luminescent material, an infrared camera can be used to image the positioning body 2 located inside the gastrointestinal tract, which is beneficial for accurately positioning the positioning body 2.

[0035] Further, referring to Figure 1 and Figure 3 , the sleeve includes a connected guiding sleeve 1 and a connecting sleeve 5. One end of the guiding sleeve 1 away from the connecting sleeve 5 has an emission port 101; a part of the pushing slider 3 is arranged inside the guiding sleeve 1, and the remaining part of the pushing slider 3 is arranged inside the connecting sleeve 5. The emission spring 4 is arranged inside a part of the guiding sleeve 1; the inner ring of the end of the guiding sleeve 1 connected to the connecting sleeve 5 has an annular protrusion 103, and the second end of the emission spring 4 abuts against the annular protrusion 103.

[0036] Further, referring to Figure 1 and Figure 3 , the pushing slider 3 includes a connecting rod 32, a clamping part 33, and an emission part 31. The clamping part 33 and the emission part 31 are respectively fixed to the opposite ends of the connecting rod 32. The outer diameter of the emission part 31 and the outer diameter of the clamping part 33 are both larger than the outer diameter of the connecting rod 32. The emission spring 4 is sleeved on the outer circle of the connecting rod 32, and the first end of the emission spring 4 abuts against the emission part 31.

[0037] Further, referring to Figure 3 , the inner wall of the guiding sleeve 1 has at least one set of two oppositely arranged guiding grooves 102. The side surface of the emission part 31 has a sliding part 310 that cooperates with the guiding grooves 102. When the pushing slider slides inside the guiding sleeve 1, the sliding part 310 is located inside the corresponding guiding groove 102 and slides along the corresponding guiding groove 102.

[0038] Further, the engaging assembly 20 includes a limiting slider 6, a second spring 7, a fixing ring 8, a reversing ring 10, and a guide wire 9; the inner wall of the connecting sleeve 5 has a notch, the second spring 7 is arranged in the notch, and the second spring 7 is connected to the limiting slider 6. The second spring 7 is fixed on the connecting sleeve 5 to provide power for the reciprocating movement of the limiting slider 6 along the notch of the connecting sleeve 5; one end of the guide wire 9 is connected to the limiting slider 6 through the fixing ring 8, the reversing ring 10 is arranged on the inner wall of the connecting sleeve 5, and the guide wire 9 passes through the reversing ring 10 and extends in a direction away from the emission port 101; wherein, when the guide wire 9 is not stressed, it pushes the pushing slider 3 in the direction away from the emission port 101. After the engaging portion 33 moves to the side of the limiting slider 6 away from the emission port 101, the second spring 7 applies a pressing force to the limiting slider 6, and the limiting slider 6 limits the engaging portion 33 to limit the pushing slider 3 at the energy storage position; when the guide wire 9 is pulled in the direction away from the emission port 101, the guide wire 9 drives the limiting slider 6 to perform an off-axis movement along the notch, and the limiting slider 6 releases the engaging portion 33, so that the engaging assembly 20 releases the pushing slider 3.

[0039] In some embodiments, the end of the engaging portion 33 away from the emitting portion 31 is conical. In this way, when the pushing slider 3 is pushed in the direction away from the emission port 101, the engaging portion 33 can smoothly slide past the limiting slider 6.

[0040] In some embodiments, the notch includes a first groove 61 and a second groove 62. The first groove 61 is used for installing the second spring 7, and the second groove 62 is used for installing the limiting slider 6.

[0041] Further, the engaging assembly 20 further includes a guide shaft 11. The guide shaft 11 is arranged in the connecting sleeve 5. The guide shaft 11 has a guide hole 110, and the guide wire 9 passes through the reversing ring 10 and the guide hole 110 on the guide shaft 11 in sequence and extends in a direction away from the emission port 101.

[0042] Further, the micro-lesion visual positioning device further includes a catheter 12 and a working handle 13. The working handle 13 has a handle 14. The catheter 12 is connected to the end of the connecting sleeve 5 away from the guiding sleeve 1. The working handle 13 is connected to the end of the catheter 12 away from the connecting sleeve 5. The fixing ring 8 fixes the guide wire 9 on the limiting slider 6. The guide wire 9 passes through the reversing ring 10, the guide hole 110 in the guide shaft 11, and the catheter 12 and is connected to the handle 14 on the working handle 13. By sliding the handle 14 on the working handle 13, the guide wire 9 is driven to move, and further the limiting slider 6 performs an off-axis movement along the notch of the connecting sleeve 5.

[0043] In some embodiments, the connection modes of the connecting sleeve 5 with the guiding sleeve 1 and the connecting sleeve 5 with the catheter 12 are both threaded connections.

[0044] In some embodiments, the method of using the micro-lesion visual positioning device provided by the present invention is as follows: Before use, place the positioning body 2 on the emitting part 31 of the pushing slider 3, and compress the pushing slider 3 along the guiding groove 102 of the guiding sleeve 1 in a direction away from the emitting port 101. When the engaging part 33 of the pushing slider 3 contacts the limiting slider 6 and continues to move downward, the limiting slider 6 compresses the second spring 7 along the notch of the connecting sleeve 5. When the pushing slider 3 moves to the energy storage position, the second spring 7 releases the limiting slider 6 to move in the axial direction, and the lower side of the limiting slider 6 abuts against the pushing slider 3 to complete the energy storage preparation work; During use, insert the emitting port 101 into the body through the special channel of the gastroscope via the catheter 12 and align it with the target position. Pull the handle 14 to drive the guide wire 9, thereby causing the limiting slider 6 to perform an off-axis movement along the notch of the connecting sleeve 5. When it moves to a specific position, the limiting slider 6 separates from the pushing slider 3, and the launching spring 4 releases the pushing slider 3 to shoot the positioning body 2 towards the lesion position. The hydrogel 201 on the positioning body 2 adheres to the lesion position; During the operation, ultraviolet light or visible light that can excite the luminescent material to emit light can be used for positioning, reducing the operation time and the required equipment, reducing the operation cost, and improving the operation efficiency.

[0045] In some embodiments, the assembly method of the micro-lesion visual positioning device provided by the present invention can be as follows: First, place the second spring 7 in the first groove 61 of the connecting sleeve 5, fix the guide wire 9 on the limiting slider 6 using the fixing ring 8, and install the limiting slider 6 in the second groove 62 of the connecting sleeve 5. The rear side of the limiting slider 6 is in contact with the second spring 7. The guide wire 9 passes through the reversing ring 10, the guiding shaft 11, and the catheter 12 and is connected to the handle 14, and then install the handle 14 on the working handle 13; Second, sleeved the launching spring 4 on the pushing slider 3, place the pushing slider 3 in the guiding sleeve 1, and connect the guiding sleeve 1 and the connecting sleeve 5 through threads; Finally, place the positioning body 2 on the pushing slider 3 to complete the overall assembly.

[0046] In some embodiments, referring to Figure 2 , the positioning body 2 is hemispherical, and the hydrogel 201 is pasted on the surface of the positioning body 2 facing the emitting port.

[0047] The micro-lesion visual positioning device provided by the present invention is applied in minimally invasive surgery. Therefore, in some embodiments, the outer diameter dimension of the guiding sleeve 1 is in the range of 2 mm to 2.3 mm, and the outer diameter dimension of the working handle 13 is in the range of 10 mm to 12 mm. In this way, it is beneficial to ensure that the size of the end entering the human body is small.

[0048] In addition, it should be noted that in the present invention Figure 1 , the length of the catheter 12 is shown in a reduced scale. The actual length of the catheter can be in the range of 1900 mm to 2100 mm.

[0049] It should be noted that in the related art, the dye is injected into the submucosa of the gastrointestinal wall to locate the lesion. This lesion localization method not only makes it difficult to control the overflow and local diffusion of the dye in the gastrointestinal wall, resulting in low accuracy of lesion localization, but also may induce complications in human tissues, increase the difficulty of lesion resection, and cause impacts on the human body. The micro-lesion visual positioning device provided by the present invention can solve a series of problems caused by using the dye to locate the lesion.

[0050] The micro-lesion visual positioning device provided by the present invention does not require the use of traditional titanium clips, solves the problem that the titanium clips cannot be clamped and positioned due to the angle, and the micro-lesion visual positioning device provided by the present invention can be reused. After the first use, it can be reused after strict disinfection and replacement of the positioning body, and has high economic value.

[0051] It should be understood that the various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in the disclosure of the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and no limitations are imposed herein.

[0052] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A visual positioning device for micro-lesions, characterized in that: include: a sleeve having a first end and a second end, the first end having a launch port; A pushing slider, wherein the pushing slider is arranged on the inner ring of the sleeve; A launching spring, wherein the launching spring is sleeved on the outer ring of the pushing slider, and a first end of the launching spring is connected to an end of the pushing slider adjacent to the launching port, and a second end of the launching spring is connected to the sleeve; A positioning body, the positioning body is arranged at the end of the pushing slider adjacent to the emission port, the positioning body comprises a luminescent material, and the luminescent material can emit light under the excitation of a light source; A clamping assembly, which is arranged in the sleeve and located on a side of the launching spring away from the launching port, and is used to limit the pushing slider at a force storage position; When the push slider is located at the force storage position, the launch spring is in a compressed state. After the locking assembly releases the push slider, the launch spring drives the push slider to move toward the launch port, so as to push the positioning body out of the launch port and launch it to the target position. The sleeve comprises a guide sleeve and a connecting sleeve connected to each other, and the end of the guide sleeve away from the connecting sleeve has the launching port; A portion of the pushing slider is disposed in the guide sleeve, the remaining portion of the pushing slider is disposed in the connecting sleeve, and the launching spring is disposed in a portion of the guide sleeve; The inner ring of one end of the guide sleeve connected to the connecting sleeve has an annular protrusion, and the second end of the launching spring abuts against the annular protrusion; The pushing slider includes a connecting rod, a clamping part and a launching part, the clamping part and the launching part are respectively fixed to the opposite ends of the connecting rod, the outer diameter of the launching part and the outer diameter of the clamping part are both larger than the outer diameter of the connecting rod, the launching spring is sleeved on the outer ring of the connecting rod, and the first end of the launching spring is in contact with the launching part.

2. The device for visually locating micro-lesions according to claim 1, characterized in that: The luminescent material can emit infrared light under the excitation of a visible light source or an ultraviolet light source.

3. The device for visually locating micro-lesions according to claim 1, characterized in that: The positioning body has a hydrogel thereon, and the positioning body is bonded to the target position through the hydrogel.

4. The device for visually locating micro-lesions according to claim 1, characterized in that: The inner wall of the guide sleeve has at least one set of two guide grooves arranged opposite to each other, and the side surface of the launching part has a sliding member cooperating with the guide groove. When the pushing slider slides in the guide sleeve, the sliding member is located in the corresponding guide groove and slides along the corresponding guide groove.

5. The device for visually locating micro-lesions according to claim 1, characterized in that: The clamping assembly includes a limiting slider, a second spring, a fixing ring, a reversing ring and a guide wire; The inner wall of the connecting sleeve has a notch, the second spring is arranged in the notch, and the second spring is connected to the limit slider, one end of the guide wire is connected to the limit slider through the fixing ring, the reversing ring is arranged on the inner wall of the connecting sleeve, and the guide wire passes through the reversing ring and extends in a direction away from the launch port; Wherein, when the guide wire is not subjected to force, the pushing slider is pushed in a direction away from the launching port, and after the engaging portion moves to a side of the limiting slider away from the launching port, the second spring applies a pressure force to the limiting slider, and the limiting slider limits the engaging portion, so as to limit the pushing slider to the force storage position; The guide wire is pulled in a direction away from the launch port, and the guide wire drives the limit slider to move off-axis along the slot, and the limit slider releases the engaging portion, so that the engaging assembly releases the pushing slider.

6. The device for visually locating micro-lesions according to claim 5, characterized in that: The clamping assembly also includes a guide shaft, which is arranged in the connecting sleeve and has a guide hole. The guide wire passes through the reversing ring and the guide hole in sequence and extends in a direction away from the launch port.

7. The device for visually locating micro-lesions according to claim 5, characterized in that: The device for visually locating micro-lesions also includes a catheter and a working handle. The working handle has a handle. The catheter is connected to one end of the connecting sleeve away from the guide sleeve. The working handle is connected to one end of the catheter away from the connecting sleeve. The guide wire passes through the catheter and is connected to the handle.

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