Visual umbrella-shaped positioning device for tiny focus

Abstract

The invention relates to the technical field of medical instruments, in particular to a tiny focus visible umbrella-shaped positioning device which comprises a positioning structure, the positioning structure comprises a titanium clamp, a sleeve, a guide wire and an umbrella-shaped assembly, the first end of the titanium clamp is a clamping end, the second end of the titanium clamp is a traction end, the clamping end extends out of the first end of the sleeve, and the guide wire is arranged in the sleeve; the traction end is connected with the first end of the guide wire, the second end of the guide wire extends out of the second end of the sleeve, the umbrella-shaped assembly comprises an umbrella cover arranged on the outer ring of the sleeve and a plurality of umbrella ribs, the umbrella ribs support the umbrella cover, the surface of the umbrella cover is provided with a light-emitting material, and the light-emitting material can emit light under excitation of the light source; the guide-in structure comprises a catheter, a handle and a handle, the first end of the catheter is connected with the second end of the sleeve, the second end of the catheter is connected with the handle, the handle is arranged on the handle, and the second end of the guide wire penetrates through the catheter and is connected with the handle. The method is at least beneficial to improving the positioning precision of the focus in the minimally invasive surgery.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a visible umbrella-shaped positioning device for tiny lesions. Background Art

[0002] For surgery on 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 umbrella-shaped 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: The present invention provides a visual umbrella-shaped positioning device for micro-lesions, comprising: a positioning structure, the positioning structure comprising: a titanium clip, a sleeve, a guide wire and an umbrella-shaped component, the first end of the titanium clip is a clamping end, the second end of the titanium clip is a traction end, the clamping end extends from the first end of the sleeve, a portion of the titanium clip between the clamping end and the traction end is slidably connected to the sleeve, the traction end is connected to the first end of the guide wire, and the second end of the guide wire extends from the second end of the sleeve, the umbrella-shaped component comprises an umbrella surface and a plurality of umbrella ribs arranged on the outer ring of the sleeve, the plurality of umbrella ribs support the umbrella surface, the surface of the umbrella surface has a luminescent material, and the luminescent material can emit light under the excitation of a light source; an introduction structure, the guide wire The introduction structure includes a catheter, a handle and a grip, the first end of the catheter is connected to the second end of the sleeve, the second end of the catheter is connected to the handle, the handle is set on the handle, and the handle is slidable relative to the handle, the second end of the guide wire passes through the catheter and is connected to the handle; during use, the guide wire is pulled by the handle, and the guide wire drives the traction end to slide relative to the sleeve, so that the titanium clip is clamped at the target position, when the guide wire is pulled in the direction away from the titanium clip to the preset position, the umbrella ribs drive the umbrella surface to unfold, and continue to pull the guide wire in the direction away from the titanium clip until the guide wire is disconnected, so that the positioning structure is separated from the introduction structure, and the positioning structure is set at the target position through the titanium clip.

[0005] Furthermore, the luminescent material can emit infrared light under the excitation of a visible light source or an ultraviolet light source.

[0006] Furthermore, the titanium clamp includes a first clamping part and a second clamping part, the first end of the first clamping part corresponds to the clamping end, the second end of the first clamping part corresponds to the traction end, the first end of the second clamping part corresponds to the clamping end, the second end of the second clamping part corresponds to the traction end, and the second end of the first clamping part and the second end of the second clamping part are fixed to the guide wire by a set screw; the first clamping part has a first slot, the first fixing screw passes through the first slot, and both ends of the first fixing screw are fixed on the sleeve; the second clamping part has a second slot, the second fixing screw passes through the second slot, and both ends of the second fixing screw are fixed on the sleeve.

[0007] Furthermore, the first end of the first clamping portion is serrated on one side facing the second clamping portion, and the first end of the second clamping portion is serrated on one side facing the first clamping portion.

[0008] Furthermore, the sleeve has a plurality of through holes, and the inner ring of the sleeve is connected to the outside of the sleeve through the through holes; the umbrella-shaped assembly also includes a large fixing ring, a plurality of connecting ribs, a small fixing ring, a central sleeve and a release spring, the large fixing ring is sleeved and fixed on the outer ring of the sleeve, the first end of each rib is connected to the large fixing ring, the middle part of each rib is connected to the first end of the corresponding connecting rib, the second end of the connecting rib passes through the corresponding through hole and extends into the inner ring of the sleeve, the central sleeve is located in the inner ring of the sleeve, and is sleeved on the outer ring of the guide wire, the small fixing ring is fixed to the outer ring of the central sleeve, and each connecting rib is connected to the large fixing ring. The second ends of the ribs are connected to the small fixing ring, the first end of the release spring abuts the center sleeve, and the second end of the release spring abuts the second end of the sleeve. When the ribs are in a retracted state, the release spring is in a compressed state; the micro-lesion visual umbrella-shaped positioning device also includes a limiting component, which is used to limit the center sleeve. When the guide wire is pulled to a preset position in a direction away from the titanium clip, the limiting component releases the center sleeve, and the release spring pushes the center sleeve to move in the direction of the titanium clip, so that the first end connected to the ribs extends to the outside of the sleeve, thereby pushing the ribs to drive the umbrella surface to unfold.

[0009] Furthermore, the inner wall of the sleeve has a first mounting hole, the center sleeve has a second mounting hole, the inner ring of the center sleeve is connected to the outside of the center sleeve through the second mounting hole, and the limiting assembly is arranged in the first mounting hole and the second mounting hole. When the limiting assembly limits the center sleeve, the first mounting hole is opposite to the second mounting hole.

[0010] Furthermore, the limiting assembly includes a guide sleeve, a first spring, a trigger ejector pin, a fixed ejector pin, an ejector pin spring and a fixed ejector pin bottom cover, the fixed ejector pin bottom cover is fixed in the first mounting hole, the ejector pin spring connects the fixed ejector pin bottom cover and the fixed ejector pin, the second mounting hole includes a first through hole and a second through hole that are connected to each other, the inner diameter of the first through hole is smaller than the inner diameter of the second through hole, and the connection between the first through hole and the second through hole forms a first step structure, the guide sleeve is arranged in the second through hole, the first spring is sleeved on the outer ring of the trigger ejector pin, and the first end of the first spring contacts the guide sleeve, and the second end of the first spring contacts the first step structure; wherein, the trigger ejector pin passes through the first through hole and the inner ring of the guide sleeve, the first mounting hole When the hole is directly opposite to the second mounting hole, the end of the fixed ejector pin away from the ejector pin spring contacts the first end of the trigger ejector pin, and the end of the fixed ejector pin away from the ejector pin spring extends into the first through hole, and the second end of the trigger ejector pin contacts a portion of the guide wire located on the inner ring of the center sleeve, and in the direction from the second end of the sleeve to the first end of the sleeve, the side of the guide wire in contact with the trigger ejector pin gradually tilts toward the sleeve; when the limiting assembly limits the center sleeve, the guide wire is pulled in a direction away from the titanium clip, and the inclined side of the guide wire pushes the trigger ejector pin to move toward the fixed ejector pin, and the trigger ejector pin pushes the fixed ejector pin to move toward the bottom cover of the fixed ejector pin. When the end of the fixed ejector pin away from the ejector pin spring detaches from the first through hole, the limiting assembly releases the center sleeve.

[0011] Furthermore, the guide wire has a strip groove, which extends along the extension direction of the guide wire. In the direction from the second end of the sleeve to the first end of the sleeve, the bottom surface of the strip groove gradually tilts toward the sleeve, and the bottom surface of the strip groove is used to contact the trigger ejector pin.

[0012] Furthermore, the positioning structure also includes a bottom seal, which is arranged at the second end of the catheter and connects the sleeve and the catheter. The second end of the release spring abuts the bottom seal, and the guide wire passes through the inner circle of the bottom seal and extends into the catheter.

[0013] Furthermore, along the direction of the sleeve pointing to the catheter, the bottom seal includes a first part and a second part connected in sequence, and the inner diameter of the first part is smaller than the inner diameter of the second part; the outer ring of the guide wire that passes through the bottom seal has an anti-slip component, and when the guide wire is pulled in a direction away from the titanium clamp, the anti-slip component passes through the inner ring of the first part and enters the inner ring of the second part, and then the anti-slip component is unfolded, and the width of the unfolded anti-slip component is greater than the inner diameter of the first part.

[0014] Compared with the prior art, the invention can achieve the following beneficial effects: the tiny lesion visual umbrella-shaped positioning device provided by the invention is applied to minimally invasive surgery to position the lesion. Specifically, the positioning structure can be fixed at the position where the lesion is located or at a position adjacent to the lesion by a titanium clip. The opening and closing of the titanium clip of the positioning structure can be controlled by structures such as a guide wire and a handle, that is, the opening and closing of the titanium clip in the body can be controlled in vitro. The clamping position of the first clamping part and the second clamping part of the titanium clip is designed to be a serrated structure, which can improve the success rate of titanium clip fixation during use and ensure that the titanium clip is not easy to fall off after being clamped. In addition, an umbrella surface with luminescent material is provided on the outer ring of the sleeve. After the titanium clip clamps the target position, the umbrella surface is controlled to unfold by further pulling the guide wire. In this way, the design of the umbrella surface makes the luminescent material setting area in the positioning structure larger, and the light intensity generated by the luminescent material is also stronger, which makes it more convenient to locate the positioning structure during surgery, thereby helping to improve the positioning accuracy of the lesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings: Figure 1 A schematic diagram of the structure of the positioning structure of the umbrella-shaped positioning device for visually positioning micro-lesions according to an embodiment of the present invention; Figure 2 A schematic diagram of the structure of the introduction structure of the umbrella-shaped positioning device for visually locating micro-lesions according to an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of the positioning structure of the umbrella-shaped positioning device for visually positioning micro-lesions according to an embodiment of the present invention; Figure 4 A schematic diagram of a part of the structure of the positioning structure of the umbrella-shaped positioning device for visually positioning micro-lesions according to an embodiment of the present invention; Figure 5 It is an enlarged schematic diagram of a part of the positioning structure of the umbrella-shaped positioning device for visually locating micro-lesions according to an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a portion of the guide wire of the umbrella-shaped positioning device for visually locating micro-lesions according to an embodiment of the present invention; Figure 7 A schematic diagram of the structure of part of the guide wire and the central sleeve of the umbrella-shaped positioning device for visually locating micro-lesions according to an embodiment of the present invention; Figure 8 A schematic diagram of the structure of the bottom seal and part of the guide wire of the umbrella-shaped positioning device for visually locating micro-lesions according to an embodiment of the present invention; Fig. 9This is a schematic diagram of the structure of the sleeve of the umbrella-shaped positioning device for visualizing micro-lesions described in an embodiment of the present invention.

[0016] Explanation of reference numerals: 1. titanium clip; 2. sleeve; 5. guide wire; 3. fixing screw; 19. umbrella cover; 7. umbrella rib; 20. catheter; 21. working handle; 22. handle; 16. fixing thimble; 31. first fixing screw; 32. second fixing screw; 110. first clamping part; 120. second clamping part; 4. set screw; 41. first notch; 42. second notch; 43. through hole; 6. large fixing ring; 8. connecting umbrella rib; 9. small fixing ring; 10. center sleeve; 11. release spring ; 200, limit assembly; 111, first groove; 113, annular limit groove; 112, sliding portion; 44, sliding groove; 45, first mounting hole; 114, second mounting hole; 13, guide sleeve; 14, first spring; 15, trigger ejector; 17, ejector spring; 18, fixed ejector bottom seal; 51, strip groove; 12, bottom seal; 121, first part; 122, second part; 123, anti-slip part; 1141, first through hole; 1142, second through hole; 52, annular fracture groove. DETAILED DESCRIPTION

[0017] After analysis, it was found that the existing methods of locating lesions using titanium clips mainly include the following two methods: the first method: during the operation, the doctor finds the position of the titanium clip by touch, and then determines the location of the lesion; the second method: when it is difficult to locate the titanium clip by touch, it is necessary to insert a gastroenteroscope to assist in positioning. The above two methods have the following problems: during laparoscopic surgery, the surgeon lacks direct touch of the hands. Even if the lesion has been assisted in positioning by inserting a titanium clip through the endoscope before the operation, it is difficult to determine the location of the lesion by simply touching the intestinal segment between the instruments; intraoperative endoscopic examination (insertion of a gastroenteroscope) prolongs the operation time, increases the operating cost of the operating room, and the patient's anesthesia time is also prolonged accordingly; because the gastroenteroscope is always connected to an external device, a large amount of gas will be injected into the intestinal cavity during the operation, causing significant intestinal expansion, occupying the abdominal cavity space, increasing the difficulty of laparoscopic surgery, and even forcing conversion to open surgery; for lesions of the colon, the patient has been positioned before the intraoperative enteroscopy, and some or even all of the punctures have been completed. At this time, if the positioning is inconsistent with the preoperative evaluation, the position and puncture position need to be reselected, which adds unnecessary procedures and cannot well reflect the principle of minimally invasive surgery; intraoperative endoscopic examination requires the cooperation of professional endoscopists, nurses and disinfection teams, which consumes human resources; intraoperative endoscopic examination requires the operating room to be equipped with a full set of special endoscopic equipment.

[0018] In order to solve the above problems, the present invention provides a visual umbrella-shaped positioning device for tiny lesions. Taking into account that the titanium clip is relatively small, forming a luminescent material on the titanium clip may cause the light source emitted by the luminescent material to be too small and difficult to be detected, and taking into account that if there is less contact between the titanium clip and the clamped target position, the titanium clip may easily fall off. In the present invention, an expandable umbrella surface is arranged in the positioning structure, and a luminescent material is arranged on the umbrella surface. The luminescent material can emit infrared light under the excitation of ultraviolet light or visible light. In this way, the umbrella surface increases the setting area of ​​the luminescent material. During the operation, the positioning structure can be conveniently and accurately positioned after irradiation with a corresponding light source, thereby achieving the resection of the lesion. In addition, a serrated structure and an anti-dropping member are provided to improve the stability of the titanium clip in clamping the target position, which is beneficial to prevent the titanium clip from falling off.

[0019] In order to make the purpose, technical solution and advantages of the invention more clear, the invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the invention and do not constitute a limitation of the invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0021] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the 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 therefore cannot be understood as a limitation on the 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 indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0022] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 indirectly connected 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 invention can be understood according to specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] refer to Figures 1 to 9 The present invention provides a visual umbrella-shaped positioning device for micro-lesions, including: a positioning structure, the positioning structure includes: a titanium clip 1, a sleeve 2, a guide wire 5 and an umbrella-shaped component, the first end of the titanium clip 1 is a clamping end, the clamping end is used to clamp a target position, the target position is the position where the lesion is located or the position adjacent to the lesion, the second end of the titanium clip 1 is a traction end, the clamping end extends from the first end of the sleeve 2, the titanium clip 1 and the sleeve 2 are slidably connected between the clamping end and the traction end by a fixing screw 3, the traction end is connected to the first end of the guide wire 5, and the second end of the guide wire 5 is extended from the second end of the sleeve 2 The umbrella-shaped component includes an umbrella cover 19 and a plurality of umbrella ribs 7 arranged on the outer ring of the sleeve 2. The plurality of umbrella ribs 7 support the umbrella cover 19. The surface of the umbrella cover 19 has a luminescent material, and the luminescent material can emit light under the excitation of the light source; the introduction structure includes a catheter 20, a working handle 21 and a handle 22. The first end of the catheter 20 is connected to the second end of the sleeve 2, the second end of the catheter 20 is connected to the working handle 21, the handle 22 is arranged on the working handle 21, and the handle 22 can slide relative to the working handle 21, and the second end of the guide wire 5 passes through the catheter 20 and is connected to the handle 22.

[0025] During use, the guide wire 5 is pulled by the handle 22, and the guide wire 5 drives the traction end to slide relative to the sleeve 2, so that the titanium clip 1 is clamped at the target position. When the guide wire 5 is pulled in the direction away from the titanium clip 1 to the preset position, the ribs 7 drive the umbrella surface 19 to unfold, and the guide wire 5 continues to be pulled in the direction away from the titanium clip 1 until the guide wire 5 is disconnected, so that the positioning structure is separated from the introduction structure, and the positioning structure is set at the target position through the titanium clip 1.

[0026] It should be noted that, in the drawings provided by the present invention, in order to clearly show the structure below the umbrella surface 19, only a portion of the umbrella surface 19 is shown, and the actual umbrella surface is a whole piece of umbrella surface 19 surrounding the sleeve 2. In addition, it should be further explained that by pulling the guide wire 5 in the direction away from the titanium clamp 1 by the handle 22, the closing operation of the titanium clamp 1 can be achieved, and by pushing the guide wire 5 in the direction of the titanium clamp 1 by the handle 22, the opening operation of the titanium clamp 1 can be achieved.

[0027] It can be understood that the umbrella cover 19 has two opposite surfaces. In some embodiments, the two opposite surfaces of the umbrella cover 19 both have luminescent materials. In this way, the setting area of ​​the luminescent material can be increased, which is conducive to further reducing the difficulty of positioning the positioning structure, making it easier to locate the positioning structure during surgery.

[0028] In some embodiments, silica gel and powdered luminescent material are mixed and then coated on the surface of the umbrella 19. In other embodiments, the luminescent material and the umbrella 19 can also be fixed in the form of spraying, gluing, etc. The present invention does not limit the fixing method of the luminescent material, as long as the luminescent material is ensured on the surface of the umbrella.

[0029] In some embodiments, the luminescent material can emit infrared light when excited by a visible light source or an ultraviolet light source.

[0030] It should be noted that when the guide wire 5 is disconnected, the positioning structure stays at the target position. By irradiating with a light source that excites the luminescent material to emit light, the positioning structure can be accurately and quickly positioned, thereby achieving the positioning of the lesion. The positioning structure is removed along with the lesion during surgical resection of the lesion. In addition, the light source can be directly irradiated into the body, introduced into the body through optical fiber, or directly irradiated outside the body.

[0031] In some embodiments, the luminescent material is a near-infrared phosphor with good chemical stability, non-toxicity, strong penetrating ability of the excited light beam and high luminous efficiency, namely, a NIR (near-infrared) phosphor, and its specific material may include Ca2LuHf2Al3O 12 :Cr 3+ By using near-infrared fluorescent powder as the luminescent material, an infrared camera can be used to image the luminous umbrella surface 19 located inside the gastrointestinal tract, which is conducive to accurately locating the positioning structure.

[0032] In some embodiments, the fixing screw 3 includes a first fixing screw 31 and a second fixing screw 32, and the titanium clamp 1 includes a first clamping portion 110 and a second clamping portion 120, the first end of the first clamping portion 110 corresponds to the clamping end, the second end of the first clamping portion 110 corresponds to the traction end, the first end of the second clamping portion 120 corresponds to the clamping end, the second end of the second clamping portion 120 corresponds to the traction end, and the second end of the first clamping portion 110 and the second end of the second clamping portion 120 are fixed to the guide wire 5 by a set screw 4; the first clamping portion 110 has a first slot 41, the first fixing screw 31 passes through the first slot 41, and both ends of the first fixing screw 31 are fixed on the sleeve 2; the second clamping portion 120 has a second slot 42, the second fixing screw 32 passes through the second slot 42, and both ends of the second fixing screw 32 are fixed on the sleeve 2. In this way, when the guide wire 5 drives the traction end to move, the second clamping part 120 slides relative to the second fixing screw 32. Since the second fixing screw 32 is arranged in the second slot 42, the second fixing screw 32 makes the second clamping part 120 slide along the fixed track. Similarly, when the guide wire 5 drives the traction end to move, the first clamping part 110 slides relative to the first fixing screw 31. Since the first fixing screw 31 is arranged in the first slot 41, the first fixing screw 31 makes the first clamping part 110 slide along the fixed track. In this way, the opening and closing of the titanium clip 1 can be controlled by the guide wire 5.

[0033] In some embodiments, the first end of the first clamping portion 110 is serrated toward the side of the second clamping portion 120, and the first end of the second clamping portion 120 is serrated toward the side of the first clamping portion 110. That is, the clamping position of the titanium clip is designed to be serrated, which can increase the success rate of fixing the titanium clip 1 to the target position during use, and ensure that the titanium clip 1 is not easy to fall off after clamping.

[0034] In some embodiments, the sleeve 2 has a plurality of through holes 43, and the inner ring of the sleeve 2 is connected to the outside of the sleeve 2 through the through holes 43; the umbrella-shaped assembly also includes a large fixing ring 6, a plurality of connecting ribs 8, a small fixing ring 9, a central sleeve 10 and a release spring 11, the large fixing ring 6 is sleeved and fixed on the outer ring of the sleeve 2, the first end of each rib 7 is connected to the large fixing ring 6, the middle part of each rib 7 is connected to the first end of the corresponding connecting rib 8, the second end of the connecting rib 8 passes through the corresponding through hole 43 and extends into the inner ring of the sleeve 2, the central sleeve 10 is located in the inner ring of the sleeve 2, and is sleeved on the outer ring of the guide wire 5, the small fixing ring 9 is fixed to the outer ring of the central sleeve 10, and each connecting rib 7 is connected to the large fixing ring 6. The second ends of the bones 8 are connected to the small fixing ring 9, the first end of the release spring 11 abuts the center sleeve 10, and the second end of the release spring 11 abuts the second end of the sleeve 2. When the ribs 7 are in a retracted state, the release spring 11 is in a compressed state; the micro-lesion visual umbrella-shaped positioning device also includes a limiting component 200, which is used to limit the center sleeve 10. When the guide wire 5 is pulled to a preset position in a direction away from the titanium clip 1, the limiting component 200 releases the center sleeve 10, and the release spring 11 pushes the center sleeve 10 to move in the direction of the titanium clip 1, so that the first end connected to the ribs 8 extends to the outside of the sleeve 2, thereby pushing the ribs 7 to drive the umbrella cover 19 to unfold.

[0035] In some embodiments, the umbrella assembly may include 6 groups of corresponding ribs 7 and connecting ribs 8.

[0036] In some embodiments, the surface of the sleeve 2 has a groove. When the umbrella cover 19 is in a retracted state, the ribs 7 and the large fixing ring 6 are both arranged in the groove. This is conducive to ensuring that the side of the positioning structure has a smoother surface, and when the sleeve 2 is introduced into the body, it is prevented from scraping the body tissue.

[0037] In some embodiments, the side surface of the central sleeve 10 also has a corresponding first groove 111 , and the small fixing ring 9 is disposed in the first groove 111 on the side surface of the central sleeve 10 .

[0038] In some embodiments, the central sleeve 10 has an annular limiting groove 113 on one side facing the release spring 11 , and the annular limiting groove 113 is used to set the release spring 11 .

[0039] In some embodiments, the outer side surface of the center sleeve 10 has a protruding sliding portion 112, and the inner wall of the sleeve 2 has a sliding groove 44, and the sliding portion 112 is arranged in the sliding groove 44. In this way, the sliding portion 112 and the sliding groove 44 guide the sliding of the center sleeve 10 relative to the sleeve 2, which is beneficial to improving the sliding stability.

[0040] In some embodiments, the sleeve 2 has a first mounting hole 45, the center sleeve 10 has a second mounting hole 114, the inner ring of the center sleeve 10 is connected to the outside of the center sleeve 10 through the second mounting hole 114, and the limiting assembly 200 is arranged in the first mounting hole 45 and the second mounting hole 114. When the limiting assembly 200 limits the center sleeve 10, the first mounting hole 45 is opposite to the second mounting hole 114.

[0041] In some embodiments, the limiting assembly 200 includes a guide sleeve 13, a first spring 14, a trigger ejector pin 15, a fixed ejector pin 16, an ejector pin spring 17 and a fixed ejector pin bottom cover 18, wherein the fixed ejector pin bottom cover 18 is fixed in the first mounting hole 45, the ejector pin spring 17 connects the fixed ejector pin bottom cover 18 and the fixed ejector pin 16, the second mounting hole 114 includes a first through hole 1141 and a second through hole 1142 that are connected to each other, the inner diameter of the first through hole 1141 is smaller than the inner diameter of the second through hole 1142, and the connection between the first through hole 1141 and the second through hole 1142 forms a first step structure, the guide sleeve 13 is arranged in the second through hole 1142, the first spring 14 is sleeved on the outer ring of the trigger ejector pin 15, and the first end of the first spring 14 contacts the guide sleeve 13, and the second end of the first spring 14 contacts the first step structure; wherein the trigger ejector pin 15 passes through the first through hole 1141 and the inner ring of the guide sleeve 13, the first When the mounting hole 45 is directly opposite to the second mounting hole 114, the end of the fixed ejector pin 16 away from the ejector spring 17 contacts the first end of the trigger ejector pin 15, and the end of the fixed ejector pin 16 away from the ejector spring 17 extends into the first through hole 1141, and the second end of the trigger ejector pin 15 contacts the part of the guide wire 5 located on the inner circle of the central sleeve 10, and the side of the guide wire 5 in contact with the trigger ejector pin 15 gradually tilts toward the sleeve 2 in the direction from the second end of the sleeve 2 to the first end of the sleeve 2; when the limiting assembly 200 limits the central sleeve 10, the guide wire 5 is pulled in the direction away from the titanium clip 1, and the inclined side of the guide wire 5 pushes the trigger ejector pin 15 to move toward the fixed ejector pin 16, and the trigger ejector pin 15 pushes the fixed ejector pin 16 to move toward the fixed ejector pin bottom 18, and when the end of the fixed ejector pin 16 away from the ejector spring 17 is disengaged from the first through hole 1141, the limiting assembly 200 releases the central sleeve 10, thereby realizing the unfolding operation of the umbrella cover 19.

[0042] The fixed ejector bottom cover 18 is used to fix the ejector spring 17 and the fixed ejector 16 in the first mounting hole 45 of the sleeve 2 .

[0043] In some embodiments, the guide wire 5 has a strip groove 51, which extends along the extension direction of the guide wire 5. The bottom surface of the strip groove 51 gradually tilts toward the sleeve 2 in the direction from the second end of the sleeve 2 to the first end of the sleeve 2. The bottom surface of the strip groove 51 is used to contact the trigger ejector pin 15, and the second end of the trigger ejector pin 15 can extend into the strip groove 51 to ensure that the second end of the trigger ejector pin 15 contacts the bottom surface of the strip groove 51.

[0044] In some embodiments, the positioning structure further includes a bottom seal 12, which is disposed at the second end of the catheter 20 and connects the sleeve 2 and the catheter 20. The second end of the release spring 11 abuts against the bottom seal 12, and the guide wire 5 passes through the inner circle of the bottom seal 12 and extends into the catheter 20. When the positioning structure is separated from the introduction structure, the bottom seal 12 is separated from the catheter 20.

[0045] In some embodiments, along the direction of the sleeve 2 pointing to the catheter 20, the bottom seal 12 includes a first part 121 and a second part 122 connected in sequence, and the inner diameter of the first part 121 is smaller than the inner diameter of the second part 122; the outer ring of the part of the guide wire 5 that passes through the bottom seal 12 has an anti-dropout piece 123, and when the guide wire 5 is pulled in the direction away from the titanium clip 1, the anti-dropout piece 123 passes through the inner ring of the first part 121 and enters the inner ring of the second part 122, and then the anti-dropout piece 123 is unfolded, and the width of the unfolded anti-dropout piece 123 is greater than the inner diameter of the first part 121. In this way, the second part 122 cooperates with the anti-dropout piece 123 to limit the guide wire 5 at the position of controlling the closing of the titanium clip 1, so as to prevent the titanium clip from falling off from the target position after the guide wire 5 is disconnected.

[0046] In some embodiments, the guide wire 5 has an annular rupture groove 52 , which is located on a portion of the guide wire 5 between the anti-dropout member 123 and the handle 22 . When the guide wire 5 is pulled apart, it is disconnected from the annular rupture groove 52 .

[0047] In some embodiments, the working principle of the micro-lesion visual umbrella-shaped positioning device provided by the present invention is as follows: the positioning structure is transported to the lesion position through the catheter 20 using the dedicated channel of the gastroenteroscope, and the handle 22 is pulled to drive the guide wire 5 to move, thereby controlling the opening and closing of the titanium clip 1 to complete the clamping task. When the guide wire 5 moves, the bottom surface of the strip groove 51 thereon contacts the second end of the trigger ejector pin 15, and the trigger ejector pin 15 moves axially relative to the guide sleeve 13 along the guide sleeve 13, thereby disengaging the fixed ejector pin 16 from the first through hole 1141, thereby achieving the center sleeve 10 being disengaged from the limit, and the compressed release spring 11 releases the elastic force, causing the center sleeve 10 to move in the direction of the titanium clip 1, and the center sleeve 10 drives the umbrella surface 19 to unfold. When the guide wire 5 is pulled off, the positioning structure stays at the target position. During surgery, the positioning structure is positioned using a light source that can excite the luminescent material to emit light, which can reduce the operation time and the required equipment, reduce the operation cost, and increase the operation efficiency.

[0048] In some embodiments, the assembly method of the micro-lesion visual umbrella-shaped positioning device provided by the present invention is as follows: first, the fixed ejector pin 16 is placed in the first mounting hole 45 of the sleeve 2, and the ejector spring 17 is placed on the rear side of the fixed ejector pin 16, and the ejector spring 17 and the fixed ejector pin 16 are fixed by the fixed ejector bottom cover 18; secondly, the umbrella rib 7 is fixed to the sleeve 2 using the large fixing ring 6, the connecting umbrella rib 8 is installed on the umbrella rib 7, and is fixed to the center sleeve 10 through the small fixing ring 9, and the umbrella surface 19 is fixed to the umbrella rib 7; next, the first spring 14 and the trigger ejector pin 15 are placed at corresponding positions of the center sleeve 10, and the fixation is completed through the guide sleeve 13; finally, the titanium clip 1 is connected to the guide wire 5 using the set screw 4, the guide wire 5 is passed through the sleeve 2 and the catheter 20 to connect with the handle 22, and the handle 22 is installed on the working handle 21, the working handle 21 is fixed to the catheter 20 through a threaded structure, and the fixing screw is passed through the notch opened on the titanium clip 1 and fixed to the sleeve 2 to complete the overall assembly.

[0049] The micro-lesion visual umbrella-shaped positioning device provided by the present invention is used in minimally invasive surgery, so in some embodiments, the outer diameter of the sleeve is in the range of 2mm to 2.3mm, and the outer diameter of the working handle is in the range of 10mm to 12mm. This is conducive to ensuring that the size of the end entering the human body is small.

[0050] In addition, it should be noted that the actual length of the catheter in the present invention may be in the range of 1900 mm to 2100 mm.

[0051] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the disclosure of the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0052] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A visual umbrella-shaped positioning device for micro-lesions, characterized in that: include: A positioning structure, the positioning structure comprising: a titanium clip (1), a sleeve (2), a guide wire (5) and an umbrella-shaped component, the first end of the titanium clip (1) being a clamping end, the second end of the titanium clip (1) being a traction end, the clamping end extending from the first end of the sleeve (2), the titanium clip (1) being slidably connected to the sleeve (2) at a portion between the clamping end and the traction end, the traction end being connected to the first end of the guide wire (5), and the second end of the guide wire (5) extending from the second end of the sleeve (2), the umbrella-shaped component comprising an umbrella surface (19) and a plurality of umbrella ribs (7) arranged on the outer ring of the sleeve (2), the plurality of umbrella ribs (7) supporting the umbrella surface (19), the surface of the umbrella surface (19) having a luminescent material, the luminescent material being able to emit light under the excitation of a light source; An introduction structure, the introduction structure comprising a catheter (20), a working handle (21) and a handle (22), the first end of the catheter (20) being connected to the second end of the sleeve (2), the second end of the catheter (20) being connected to the working handle (21), the handle (22) being arranged on the working handle (21), and the handle (22) being slidable relative to the working handle (21), and the second end of the guide wire (5) passing through the catheter (20) and being connected to the handle (22); During use, the guide wire (5) is pulled by the handle (22), and the guide wire (5) drives the traction end to slide relative to the sleeve (2), so that the titanium clip (1) is clamped at the target position. When the guide wire (5) is pulled in a direction away from the titanium clip (1) to a preset position, the ribs (7) drive the umbrella surface (19) to unfold, and the guide wire (5) is continued to be pulled in a direction away from the titanium clip (1) until the guide wire (5) is disconnected, so that the positioning structure is separated from the introduction structure, and the positioning structure is set at the target position through the titanium clip (1).

2. The micro-lesion visual umbrella-shaped positioning device 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 micro-lesion visual umbrella-shaped positioning device according to claim 1, characterized in that: The titanium clamp (1) comprises a first clamping portion (110) and a second clamping portion (120), wherein the first end of the first clamping portion (110) corresponds to the clamping end, the second end of the first clamping portion (110) corresponds to the traction end, the first end of the second clamping portion (120) corresponds to the clamping end, the second end of the second clamping portion (120) corresponds to the traction end, and the second end of the first clamping portion (110) and the second end of the second clamping portion (120) are fixed to the guide wire (5) by a set screw (4); The first clamping portion (110) has a first notch (41), the first fixing screw (31) passes through the first notch (41), and both ends of the first fixing screw (31) are fixed to the sleeve (2); The second clamping portion (120) has a second notch (42), the second fixing screw (32) passes through the second notch (42), and both ends of the second fixing screw (32) are fixed on the sleeve (2).

4. The micro-lesion visual umbrella-shaped positioning device according to claim 3, characterized in that: The first end of the first clamping portion (110) is in a sawtooth shape on the side facing the second clamping portion (120), and the first end of the second clamping portion (120) is in a sawtooth shape on the side facing the first clamping portion (110).

5. The micro-lesion visual umbrella-shaped positioning device according to claim 1, characterized in that: The sleeve (2) has a plurality of through holes (43), and the inner ring of the sleeve (2) is connected to the outside of the sleeve (2) through the through holes (43); The umbrella-shaped assembly further comprises a large fixing ring (6), a plurality of connecting ribs (8), a small fixing ring (9), a central sleeve (10) and a release spring (11); the large fixing ring (6) is sleeved and fixed on the outer ring of the sleeve (2); the first end of each rib (7) is connected to the large fixing ring (6); the middle part of each rib (7) is connected to the first end of the corresponding connecting rib (8); the second end of the connecting rib (8) passes through the corresponding through hole (43) and extends into the inner part of the sleeve (2). The central sleeve (10) is located in the inner ring of the sleeve (2) and is sleeved on the outer ring of the guide wire (5); the small fixing ring (9) is fixed to the outer ring of the central sleeve (10); the second end of each of the connecting ribs (8) is connected to the small fixing ring (9); the first end of the release spring (11) abuts against the central sleeve (10); the second end of the release spring (11) abuts against the second end of the sleeve (2); when the rib (7) is in a contracted state, the release spring (11) is in a compressed state; The micro-lesion visual umbrella-shaped positioning device further comprises a limiting assembly (200), wherein the limiting assembly (200) is used to limit the central sleeve (10); when the guide wire (5) is pulled in a direction away from the titanium clip (1) to a preset position, the limiting assembly (200) releases the central sleeve (10), and the release spring (11) pushes the central sleeve (10) to move in the direction of the titanium clip (1), so that the first end of the connecting rib (8) extends toward the outside of the sleeve (2), thereby pushing the rib (7) to drive the umbrella cover (19) to unfold.

6. The micro-lesion visual umbrella-shaped positioning device according to claim 5, characterized in that: The sleeve (2) has a first mounting hole (45), the center sleeve (10) has a second mounting hole (114), the inner ring of the center sleeve (10) is connected to the outside of the center sleeve (10) through the second mounting hole (114), the limiting component (200) is arranged in the first mounting hole (45) and the second mounting hole (114), and when the limiting component (200) limits the center sleeve (10), the first mounting hole (45) and the second mounting hole (114) are opposite.

7. The micro-lesion visual umbrella-shaped positioning device according to claim 6, characterized in that: The limit assembly (200) comprises a guide sleeve (13), a first spring (14), a trigger ejector pin (15), a fixed ejector pin (16), an ejector pin spring (17), and a fixed ejector pin bottom cover (18); the fixed ejector pin bottom cover (18) is fixed in the first mounting hole (45); the ejector pin spring (17) connects the fixed ejector pin bottom cover (18) and the fixed ejector pin (16); the second mounting hole (114) comprises a first through hole (1141) and a second through hole (1142) that are connected to each other; The inner diameter of the first through hole (1141) is smaller than the inner diameter of the second through hole (1142); the connection between the first through hole (1141) and the second through hole (1142) forms a first step structure; the guide sleeve (13) is arranged in the second through hole (1142); the first spring (14) is sleeved on the outer ring of the trigger ejector pin (15); the first end of the first spring (14) contacts the guide sleeve (13); and the second end of the first spring (14) contacts the first step structure; The trigger ejector pin (15) passes through the first through hole (1141) and the inner ring of the guide sleeve (13); when the first mounting hole (45) is aligned with the second mounting hole (114), one end of the fixed ejector pin (16) away from the ejector spring (17) contacts the first end of the trigger ejector pin (15); and one end of the fixed ejector pin (16) away from the ejector spring (17) extends into the first through hole (1141); the second end of the trigger ejector pin (15) contacts the portion of the guide wire (5) located on the inner ring of the central sleeve (10); and in a direction from the second end of the sleeve (2) to the first end of the sleeve (2), the side of the guide wire (5) in contact with the trigger ejector pin (15) gradually tilts toward the sleeve (2); When the limiting assembly (200) limits the center sleeve (10), the guide wire (5) is pulled in a direction away from the titanium clamp (1), and the inclined side of the guide wire (5) pushes the trigger ejector pin (15) to move toward the fixed ejector pin (16). The trigger ejector pin (15) pushes the fixed ejector pin (16) to move toward the fixed ejector pin bottom cover (18). When one end of the fixed ejector pin (16) away from the ejector pin spring (17) is disengaged from the first through hole (1141), the limiting assembly (200) releases the center sleeve (10).

8. The micro-lesion visual umbrella-shaped positioning device according to claim 7, characterized in that: The guide wire (5) has a strip groove (51), and the strip groove (51) extends along the extension direction of the guide wire (5), and in the direction from the second end of the sleeve (2) to the first end of the sleeve (2). The bottom surface of the strip groove (51) gradually inclines toward the sleeve (2), and the bottom surface of the strip groove (51) is used to contact the trigger ejector pin (15).

9. The micro-lesion visual umbrella-shaped positioning device according to claim 5, characterized in that: The positioning structure further comprises a bottom seal (12), wherein the bottom seal (12) is arranged at the second end of the catheter (20), and the bottom seal (12) connects the sleeve (2) and the catheter (20), the second end of the release spring (11) abuts against the bottom seal (12), and the guide wire (5) passes through the inner circle of the bottom seal (12) and extends into the catheter (20).

10. The micro-lesion visual umbrella-shaped positioning device according to claim 9, characterized in that: Along the direction from the sleeve (2) to the conduit (20), the bottom seal (12) comprises a first part (121) and a second part (122) connected in sequence, and the inner diameter of the first part (121) is smaller than the inner diameter of the second part (122); The outer ring of the guide wire (5) that passes through the bottom seal (12) has an anti-slip component (123). When the guide wire (5) is pulled in a direction away from the titanium clamp (1), the anti-slip component (123) passes through the inner ring of the first part (121) and enters the inner ring of the second part (122). Thereafter, the anti-slip component (123) is unfolded, and the width of the unfolded anti-slip component (123) is greater than the inner diameter of the first part (121).

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