Lung surgery marker and recovery system thereof

Abstract

The embodiment of the utility model relates to the field of medical instruments, in particular to a pulmonary surgery marker and a recovery system thereof, and the marker comprises a self-expansion support and an elastic piece, the self-expansion stent comprises two ends and a plurality of expansion columns, the two ends are located at the two ends of the expansion columns respectively, the expansion columns are distributed in the circumferential direction of the ends, and the expansion columns are made of memory materials. The two ends of the elastic piece are connected with the two ends respectively, and the elastic piece stretches or contracts to drive the two ends to move so that the self-expansion support can expand or contract. After a pulmonary surgery marker is conveyed to a lung lesion part by a conveying device, the self-expansion stent stably expands in a lantern shape at the lesion part due to the characteristics of a memory alloy material and the matching of the pulling force of the spring, and a doctor can find the marker in an expanded state in a human body external touch mode by matching with the inner sleeves at the two ends; and the lung lesion part is positioned, so that tissues of the lesion part are cut off.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and in particular to a pulmonary surgery marker and a recovery system thereof. Background Art

[0002] For early-stage lung diseases, such as lung cancer or unidentified nodules, the best treatment is surgical resection for radical cure. Since the size of early lesions is small and their density is very close to that of normal lung tissue, doctors often cannot accurately locate the lesions during surgery. For this reason, a marker for marking lung lesions has emerged in recent years.

[0003] The markers in the prior art are usually made of a whole memory alloy material by cutting or welding. When the marker is delivered to the lesion site of the lung by a delivery device and released, the marker expands to its expanded structure due to its own material properties, thereby marking the lesion site of the lung. At this time, the doctor can locate the lesion site of the lung by touching the marker in the expanded state.

[0004] However, the expansion effect of the markers in the prior art in the human body is still defective. In addition, after the markers are released, the position cannot be readjusted and the markers cannot be recovered, which results in limitations in the location of diseased tissues and surgical operations. Utility Model Content

[0005] The embodiment of the utility model provides a pulmonary surgery marker, comprising: a self-expanding stent and an elastic member;

[0006] The self-expanding stent includes two end heads and a plurality of expansion columns, the two end heads are respectively located at the two ends of the expansion columns, the plurality of expansion columns are distributed along the circumference of the end heads, and the expansion columns are made of memory material, and the expansion columns can be bent according to a preset memory, so that the self-expanding stent expands outward without external force;

[0007] The two ends of the elastic member are respectively connected to the two ends, and the extension or contraction of the elastic member can drive the two ends to move away from each other or towards each other, so that the self-expanding stent can expand or contract. From the above content, it can be known that when the lung surgical marker is delivered to the lung lesion site by the delivery device, due to the characteristics of the shape memory material, when there is no external force, the memory alloy strip bends itself, and the elastic force given to the two ends by the elastic member makes the self-expanding stent expand stably in a lantern shape at the lesion site, making the marker easier to be felt, so that the doctor can find the marker in an expanded state by touching it from the outside of the human body, and locate it to the lung lesion site, and then remove the tissue at the lesion site.

[0008] In a possible solution, the pulmonary surgical marker further includes an inner sleeve, which is sleeved at both ends of the elastic member and is located in the self-expanding stent, and the two ends are respectively connected to the inner sleeve. The inner sleeve supports both ends of the self-expanding stent, so that the marker expands stably and is easier to be felt.

[0009] In a possible solution, the inner sleeve is provided with a guide groove at the pipe mouth, and the guide groove is used to determine the position of the grabbing through hole. The guide groove is connected to the grabbing through hole, which not only facilitates the adjustment of the angle of the hook claw to be consistent with the angle of the grabbing through hole during grabbing, but also makes the operation of aligning the angle of the hook claw with the grabbing through hole more convenient.

[0010] The embodiment of the utility model also provides a pulmonary surgery marker recovery system, which is used for recovering the markers in the above possible solution, and the recovery system includes: a handle, a grabber and an inner sheath;

[0011] The handle comprises a base and an adjustment handle movably connected to the base;

[0012] One end of the inner sheath tube is fixedly connected to the adjustment handle, and the other end is slidably arranged in the base, and the adjustment handle is used to drive the axial movement of the inner sheath tube relative to the base;

[0013] The distal end of the grabber is provided with a hook, one end of which is inserted into the inner sheath and can slide relative to the inner sheath to drive the hook to extend or retract into the inner sheath; the hook is made of memory alloy, is in the shape of a hook when there is no external force, and is used to hook the marker. From the above content, it can be seen that the recovery system can be used to specifically recover lung surgical markers, and the grabber is extended from the inner sheath through the handle. By using the characteristics of the hook memory alloy, after the hook is fully extended, the hook opens and is inserted into the grabbing through hole of the marker to achieve the grabbing of the marker, thereby achieving the position adjustment function and recovery function of the marker.

[0014] In a possible solution, the inner sheath tube includes an elastic tube and a guide head. The proximal end of the elastic tube is fixed on the adjustment handle, and the guide head is fixed at the distal end of the elastic tube. By utilizing the characteristics of the elastic tube, the entire recovery system has better flexibility and cornering performance.

[0015] In a possible solution, a limiting portion is provided at the distal end of the inner sheath tube, and the limiting portion is used to abut against the proximal end of the marker when the inner sheath tube moves toward the marker. This structure is used to position the proximal end of the marker and the distal end of the inner sheath tube.

[0016] In a possible solution, a limiting mechanism is provided between the adjusting handle and the base, and the limiting mechanism is used to fix the relative position of the adjusting handle and the base so as to adjust the extension length of the grabber relative to the inner sheath tube.

[0017] In a possible solution, the limiting mechanism includes: a limiting ring arranged on the adjusting handle, the limiting ring is provided with a threaded hole and a screw arranged in the threaded hole, the tail end of the screw is against the base, and the position of the limiting ring is fixed by the friction force of tightening the screw.

[0018] In a possible solution, the limiting mechanism also includes a limiting buckle arranged on the outside of the adjusting handle, and the limiting buckle is used to limit the movement limit position of the limiting ring to control the extension length of the hook claw and cooperate with the position of the grabbing through hole so that the hook claw moves smoothly and the grabbing position is accurate during the grabbing process.

[0019] In a possible solution, the recovery system further includes: an outer sheath tube, which is sleeved on the outer wall of the inner sheath tube, and a hard tube is sleeved on the distal end of the outer sheath tube to ensure that the tip end of the outer sheath tube will not be deformed due to force during the recovery of the marker.

[0020] In a possible solution, the number of the grasping through holes and the number of the hooks are both three, and they are evenly distributed, so that the grasping is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 This is a schematic diagram of the self-expanding stent in the first embodiment of the present utility model under the condition of no external force;

[0023] Figure 2 It is a schematic diagram of the self-expanding stent in the first embodiment of the utility model under compression;

[0024] Figure 3 The connection diagram of the inner sleeve and the spring in the second embodiment of the present utility model is shown in FIG. Figure 1 ;

[0025] Figure 4 The connection diagram of the inner sleeve and the spring in the second embodiment of the present utility model is shown in FIG. Figure 2 ;

[0026] Figure 5This is a schematic diagram of the structure of the inner sleeve in the second embodiment of the present utility model;

[0027] Figure 6 for Figure 5 A partial enlarged view of part A;

[0028] Figure 7 This is a schematic diagram of the marker in Example 1 of the utility model under the condition of no external force;

[0029] Figure 8 It is a schematic diagram of the marker in the first embodiment of the utility model under compression conditions;

[0030] Fig. 9 This is a schematic diagram of the structure of the grabber in the second embodiment of the present utility model when it is not deformed in the sheath tube;

[0031] Fig.10 It is a structural schematic diagram of the second embodiment of the utility model when the grabber extends out of the sheath tube to restore the property memory;

[0032] Fig.11 This is a schematic diagram of the structure of the outer sheath and the handle in the second embodiment of the present utility model;

[0033] Fig.12 This is a schematic diagram of the structure of the inner sheath and the handle in the second embodiment of the utility model;

[0034] Fig.13 This is a schematic diagram of the structure of the elastic tube in the second embodiment of the utility model;

[0035] Fig.14 This is a schematic diagram of the structure of the handle in the second embodiment of the present utility model;

[0036] Fig.15 This is a schematic diagram of the cross-sectional structure of the handle in the second embodiment of the present utility model;

[0037] Fig.16 This is a schematic diagram of the cross-sectional structure inside the inner sheath tube in the second embodiment of the utility model;

[0038] Fig.17 This is a schematic diagram of the use status of the hook in the second embodiment of the utility model.

[0039] Numbers in the figure:

[0040] 1. Self-expanding stent; 11. End; 12. Memory alloy strip; 2. Spring; 3. Inner sleeve; 31. Grasping hole; 32. Guide groove; 4. Handle; 41. Base; 42. Adjustment handle; 5. Grabber; 51. Hook; 6. Inner sheath; 61. Elastic tube; 62. Guide head; 63. Limiting part; 71. Limiting ring; 72. Screw; 73. Limiting buckle; 8. Outer sheath. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0045] Embodiment 1

[0046] like Figure 1-8 As shown, the lung surgery marker of this embodiment includes: a self-expanding stent 1 and an elastic member 2;

[0047] The self-expanding stent 1 includes two end caps 11 and a plurality of expansion columns. In the figure, the expansion columns are memory alloy strips 12. The two end caps 11 are respectively located at the two ends of the expansion columns 12. The plurality of expansion columns 12 are distributed along the circumference of the end caps 11. The expansion columns 12 are made of memory material. The expansion columns can be bent according to a preset memory so that the self-expanding stent can expand outward without external force.

[0048] Both ends of the elastic member 2 are connected to the two end heads respectively. The extension or contraction of the elastic member 2 can drive the two end heads 11 to move away from each other or move toward each other, so that the self-expanding stent can expand or contract.

[0049] Optionally, in this embodiment, the pulmonary surgical marker further comprises an inner sleeve 3, which is sleeved at both ends of the spring 2, and is located in the self-expanding stent 1, and the two ends 11 are respectively connected to the inner sleeve. The inner sleeve 3 is provided with a grabbing through hole 31, and the grabbing hole 31 is for cooperating with a hook of an external recovery system.

[0050] Optionally, two inner sleeves 3 are provided, and the two inner sleeves 3 are respectively provided at both ends of the spring 2, and the inner sleeves 3 are configured as hard tubes to enhance the support for the end of the self-expanding stent 1, so that the self-expanding stent 1 is easier to be found.

[0051] In one embodiment, if Figure 7 and Figure 8 As shown, the elastic member 2 is configured as a spring 2. In other embodiments, the specific structure of the elastic member is not limited to the spring or the structure shown in the figure.

[0052] Specifically, the self-expanding stent 1 is obtained by laser cutting and heat setting of a nickel-titanium tube, and the self-expanding stent 1 after setting is lantern-shaped. The two ends of the self-expanding stent 1 are end caps 11, and the middle is a strip structure. The spring 2 and the inner sleeve 3 inside the marker are fixed into a whole using a laser welding process. The laser welding connection strength is stable, and the tension can reach 20 to 50N, preferably 30 to 40N. The inner sleeve 3 and the end cap 11 are fixedly connected by gluing or welding, and the tension can reach 10 to 40N, preferably 20 to 30N, which greatly meets the use requirements and ensures its compression and expansion tolerance and service life. At the same time, the inner sleeve 3 is made of stainless steel and the spring 2 makes the marker easier to expand.

[0053] From the above content, it can be known that when the lung surgical marker is delivered to the lesion site of the lung by the delivery device in the prior art, it deforms and expands due to the characteristics of the memory alloy material, and combined with the elastic force of the elastic member 2, the self-expanding stent 1 further expands in a lantern shape at the lesion site, and the degree of expansion increases. Combined with the support of the inner sleeve 3 on both ends of the self-expanding stent 1, the marker is easier to touch, and the doctor can find the marker in an expanded state by touching it with the outside of the human body, and locate it to the lesion site of the lung, and then remove the tissue at the lesion site.

[0054] Optional, such as Figure 3 and Figure 4As shown, the inner sleeve 3 is provided with a guide groove 32 at the tube mouth, and the guide groove 32 is used to guide the movement of the hook 51. The guide groove 32 can cooperate with the setting angle of the hook 51 in the external marker recovery system to make the angle of the hook 51 consistent with the angle of the grasping hole 31, so that the hook 51 can pass through the grasping hole 31 smoothly and without deviation, thereby increasing the grasping accuracy.

[0055] Optionally, the guide groove 32 is connected to the grabbing through hole 31, so that the operation of aligning the hook 51 with the grabbing through hole 31 is more convenient. Furthermore, the connection between the grabbing through hole 31 and the guide groove 32 is an arc transition, so that the hook 51 can smoothly move along the guide groove 32 and extend into the grabbing through hole 31.

[0056] Embodiment 2

[0057] Figure 9-17 In the second embodiment of the present invention, the second embodiment is a corresponding marker recovery system based on the first embodiment, such as Figure 2 As shown, the pulmonary surgery marker recovery system is used for recovering the marker in the first embodiment, and comprises: a handle 4, a grabber 5 and an inner sheath 64;

[0058] The handle includes a base 41 and an adjustment handle 42 movably connected to the base 41;

[0059] One end of the inner sheath tube 6 is fixedly connected to the adjustment handle 42, and the other end is slidably arranged in the base 41. The adjustment handle 42 is used to drive the axial movement of the inner sheath tube 6 relative to the base to adjust the length of the inner sheath tube 6 extending out of the base 41;

[0060] like Fig. 9 , Fig.10 as well as Fig.16 As shown, a hook 51 is provided at the distal end of the grabber 5, one end of the grabber 5 is inserted into the inner sheath tube 6, and can slide axially relative to the inner sheath tube 6, driving the grabber 5 to slide axially relative to the inner sheath tube 5 to drive the hook 51 to extend or retract into the inner sheath tube 6; the hook 51 is made of a memory alloy, is in a hook shape when there is no external force, and is used to hook the marker, that is, when the grabber 5 moves axially to extend out of the inner sheath tube 6, there is no external force acting on the grabber 5, so the shape memory is restored to a hook shape.

[0061] In one embodiment, the doctor manually drives the grasper 5 to slide axially along the inner sheath tube 5. Of course, the grasper 5 can also be driven to move automatically.

[0062] In this embodiment, the hook 51 is obtained by cutting and heat-setting the tail end of a nickel-titanium tube.

[0063] From the above content, it can be known that the retrieval system can be used to specifically retrieve lung surgical markers. The grabber 5 is extended from the inner sheath tube 6 through the handle 4, and the characteristics of the memory alloy of the hook 51 are utilized. After the hook 51 is fully extended, Fig.17 As shown, the hook claw 51 is opened and inserted into the grabbing through hole 31 of the marker to grab the marker, thereby realizing the position adjustment function and the recovery function of the marker.

[0064] Optional, such as Fig.16 As shown, the inner sheath tube 6 includes: an elastic tube 61 and a guide head 62 located at the distal end of the elastic tube 61. In this embodiment, the elastic tube is a spring tube. By utilizing the characteristics of the elastic tube 61, the entire recovery system has better flexibility and cornering performance.

[0065] Optional, such as Fig.16 As shown, a limiting portion 63 is provided at the distal end of the inner sheath 6. Specifically, the limiting portion 63 is provided on the guide head 62. The limiting portion 63 is used for abutting and positioning the proximal end of the marker when the inner sheath moves toward the marker.

[0066] Specifically, Fig.16 As shown, the limiting portion 63 is set to a step shape, and the step shape is formed by changing the tube diameter inside the inner sheath tube 6. Of course, in other embodiments, the limiting portion can also be a protruding structure arranged on the inner wall of the inner sheath tube 6.

[0067] Optionally, a limiting mechanism is provided between the adjusting handle 42 and the base 41 , and the limiting mechanism is used to fix the relative position of the adjusting handle 42 and the base 41 so as to limit the protruding length of the grabber 5 relative to the inner sheath 6 .

[0068] Optional, such as Fig.14 As shown, the limiting mechanism includes: a limiting ring 71 arranged on the adjusting handle 4, the limiting ring 71 is provided with a threaded hole and a screw 72 arranged in the threaded hole, the screw 72 is screwed so that the tail end of the screw 72 is against the base, and the position of the limiting ring 71 is fixed by using the friction between the screw 72 and the base 41.

[0069] Optional, such as Fig.14 As shown, the limiting mechanism also includes a limiting buckle 73 arranged on the outside of the adjustment handle 42. The limiting buckle 73 is used to limit the movement limit position of the limiting ring 71 to control the extension length of the hook 51 and cooperate with the position of the gripping hole 31 to increase the gripping effect.

[0070] Optional, such as Fig.11 As shown, the recovery system also includes: an outer sheath tube 8, which is sleeved on the outer wall of the inner sheath tube 6, and a hard tube is sleeved on the distal end of the outer sheath tube 8 to ensure that the tip end of the outer sheath tube 8 will not be deformed by force during the recovery process of the marker.

[0071] Optional, such as Fig. 9 and Fig.10 As shown, the number of the grabbing through holes 31 and the hooks 51 are both three, and they are evenly distributed, so that the grabbing effect is stable. Of course, the number of the hooks 51 is not limited, and can also be any other number, such as two, four, five, etc.

[0072] In the present invention, unless otherwise clearly specified and limited, a first feature being “on” or “under” a second feature may mean that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact via an intermediate medium.

[0073] Moreover, the first feature being “above”, “above”, and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being “below”, “below”, and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pulmonary surgery marker, characterized in that: include: self-expanding stents and elastic members; The self-expanding stent includes two end heads and a plurality of expansion columns, the two end heads are respectively located at the two ends of the expansion columns, the plurality of expansion columns are distributed along the circumference of the end heads, and the expansion columns are made of memory material, and the expansion columns can be bent according to a preset memory, so that the self-expanding stent expands outward without external force; The two ends of the elastic member are connected to the two end heads respectively. The extension or contraction of the elastic member can drive the two end heads to move away from each other or move toward each other, so as to expand or contract the self-expanding stent.

2. The marker according to claim 1, characterized in that It also includes an inner sleeve, which is sleeved on both ends of the elastic member and is located inside the self-expanding stent, and the two end heads are respectively connected to the inner sleeve.

3. The marker according to claim 2, characterized in that The inner sleeve is provided with a guide groove at the pipe mouth, the guide groove is used to determine the position of the grabbing through hole, and the guide groove is communicated with the grabbing through hole.

4. A pulmonary surgery marker recovery system, used for recovering the marker according to any one of claims 1 to 3, characterized in that: include: handles, graspers, and inner sheaths; The handle comprises a base and an adjustment handle movably connected to the base; One end of the inner sheath tube is fixedly connected to the adjustment handle, and the other end is slidably arranged in the base, and the adjustment handle is used to drive the axial movement of the inner sheath tube relative to the base; A hook is provided at the distal end of the grabber, one end of the grabber is inserted into the inner sheath tube and can slide relative to the inner sheath tube to drive the hook to extend or retract into the inner sheath tube; the hook is made of a memory alloy, is in the shape of a hook when there is no external force, and is used to hook the marker.

5. The recovery system according to claim 4, characterized in that: The inner sheath tube comprises an elastic tube and a guide head. The proximal end of the elastic tube is fixedly arranged on the adjustment handle, and the guide head is fixedly arranged on the distal end of the elastic tube.

6. The recovery system according to claim 4, characterized in that: A limiting portion is arranged at the distal end of the inner sheath tube, and the limiting portion is used to abut against the proximal end of the marker when the inner sheath tube moves toward the marker.

7. The recovery system according to claim 6, characterized in that: A limiting mechanism is provided between the adjusting handle and the base, and the limiting mechanism is used to fix the relative position of the adjusting handle and the base.

8. The recovery system according to claim 7, characterized in that: The limiting mechanism comprises: a limiting ring arranged on the adjusting handle, the limiting ring is provided with a threaded hole and a screw arranged in the threaded hole.

9. The recovery system according to claim 8, characterized in that: The limiting mechanism also includes a limiting buckle arranged on the outside of the adjusting handle, and the limiting buckle is used to limit the movement limit position of the limiting ring.

10. The recovery system according to claim 4, characterized in that: Also includes: An outer sheath tube is sleeved on the outer wall of the inner sheath tube, and a hard tube is sleeved on the distal end of the outer sheath tube.

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