CN113116596B

CN113116596B - Lancing device

Info

Publication number: CN113116596B
Application number: CN201911421855.0A
Authority: CN
Inventors: 唐江峰; 肖本好
Original assignee: Lifetech Scientific Shenzhen Co Ltd
Current assignee: Lifetech Scientific Shenzhen Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2023-09-19
Anticipated expiration: 2039-12-31
Also published as: CN113116596A

Abstract

The application relates in particular to a lancing device for lancing an implant, comprising: a loading assembly for loading the implant; the lancing assembly is used for lancing the implant; the first driving assembly drives the loading assembly to move in a first direction relative to the lancing assembly; the second driving assembly drives the kerf assembly to move in a second direction relative to the loading assembly so as to cut a plurality of implants uniformly, ensure that the implants can play roles after being implanted into the body and facilitate windowing operation.

Description

Lancing device

Technical Field

The application belongs to the technical field of medical instruments, and particularly relates to a lancing device.

Background

For vascular diseases such as aortic aneurysm and aortic dissection, vascular intervention operation of implanting a covered stent is generally adopted for treatment. For aortic dissection involving the aortic arch, the current solutions mainly include chimney technique and windowing technique, and other doctors and scholars propose lancing technique, i.e. cutting tiny cracks in the stent-graft area. After the stent is implanted into the aortic arch part, the incision area just aims at the branch position on the arch, on one hand, blood can flow into the branch vessel through the incision of the tectorial membrane, and the blockage of the branch vessel is prevented; on the other hand, due to the existence of the tectorial membrane bracket joint, the operation of in-situ windowing can be carried out without a rupture of membranes puncture system, and the risk and the operation difficulty of in-situ windowing are greatly reduced.

For the lancing technology, manual manufacturing is mostly adopted, accurate control cannot be achieved on the arrangement of lancing, the efficiency is low, the lancing of the manually manufactured stent graft is unevenly distributed, the stent graft can influence the smoothness of a branched blood vessel after being implanted into a body, and the difficulty of in-situ windowing operation can be increased.

Disclosure of Invention

The application aims to at least solve the problems of uneven kerf distribution and low efficiency caused by manual manufacturing in the prior art. The aim is achieved by the following technical scheme:

the application provides a lancing device for lancing an implant, comprising:

a loading assembly that loads the implant;

a lancing assembly lancing the implant;

the first driving assembly drives the loading assembly to move in a first direction relative to the lancing assembly;

the second driving assembly drives the lancing assembly to move in a second direction relative to the loading assembly.

According to the lancing device provided by the embodiment of the application, the loading assembly is used for loading the implant, the lancing assembly is used for lancing the implant, the first driving assembly and the second driving assembly are arranged and can drive the loading assembly to move in a first direction relative to the lancing assembly or drive the lancing assembly to move in a second direction relative to the loading assembly, the lancing operation can be carried out on the implant in a plurality of directions and at different positions, so that the lancing on the implant can be uniformly distributed, the whole operation is simple and easy to control, the function of the lanced implant can be exerted after the lanced implant is implanted in the implant, and meanwhile, compared with the manual lancing operation in the prior art, the production efficiency is improved, the lancing distribution uniformity is improved, and the reject ratio of the implant is reduced.

In addition, the lancing device according to the embodiment of the present application may further have the following additional technical features:

in some embodiments of the application, the lancing device further comprises a chassis, the loading assembly and the lancing assembly being disposed on the chassis.

In some embodiments of the application, the loading assembly comprises:

the rotating shaft is rotationally connected to the rack;

the loading piece is sleeved on the rotating shaft, and the implant body is sleeved on the loading piece.

In some embodiments of the present application, the first driving component is connected to one end of the rotating shaft, and the first driving component drives the rotating shaft to rotate;

the frame is provided with a first scale corresponding to the first driving assembly, and the first scale marks the rotating angle of the first driving assembly;

the loading assembly further comprises a first locking piece, the first locking piece is connected to the rotating shaft, and when the first driving assembly drives the rotating shaft to rotate, the first locking piece locks the relative position between the rotating shaft and the rack.

In some embodiments of the application, the loading assembly further comprises a second lock;

the rotating shaft is provided with a limiting part, and the limiting part and the second locking piece are respectively matched with two ends of the loading piece so as to lock the relative position between the rotating shaft and the loading piece.

In some embodiments of the present application, the outer surface of the rotating shaft is provided with a rotation stopping structure, and the inner surface of the loading member and the rotation stopping structure of the rotating shaft cooperate with each other to make the loading member and the rotating shaft relatively static so as to be fixed with each other.

In some embodiments of the application, a second scale corresponding to the lancing assembly is provided on the frame;

the second driving assembly comprises a driving track, the driving track is fixed on the frame, the lancing assembly moves on the driving track, and the second scale marks the movement distance of the lancing assembly on the driving track.

In some embodiments of the present application, the second driving assembly further includes a first operating member, one end of the driving rail is connected to the first operating member, the driving rail is in threaded engagement with the lancing assembly, and the first operating member drives the driving rail to move relative to the lancing assembly.

In some embodiments of the application, the lancing assembly includes:

the shell is movably connected with the driving track and moves on the driving track;

the second operating piece is positioned outside the shell, the other part of the second operating piece stretches into the shell, an accommodating groove is formed in the shell, an elastic piece is arranged in the accommodating groove, one end of the elastic piece is propped against the part, stretching into the shell, of the second operating piece, and the other end of the elastic piece is propped against the inner wall of the shell;

the cutter is connected to the second operating piece, and the second operating piece drives the cutter to slit.

In some embodiments of the present application, a sliding rail is disposed on the rack, and the housing is provided with a mounting portion, and the mounting portion is slidably connected to the sliding rail, so that when the housing moves on the driving rail, the mounting portion is driven to slide on the sliding rail.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic perspective view of a lancing device according to an embodiment;

FIG. 2 is a front view of an implant according to one embodiment;

FIG. 3 is a front view of the lancing device shown in FIG. 1;

FIG. 4 is a side view of the lancing device shown in FIG. 1;

FIG. 5 is a top view of the lancing device shown in FIG. 1;

FIG. 6 is a schematic cross-sectional view of A-A shown in FIG. 5;

FIG. 7 is a schematic view of another cross-sectional structure of FIG. 1;

FIG. 8 is a schematic view of another angled perspective of the lancing assembly of FIG. 1;

FIG. 9 is a schematic perspective view of the lancing assembly of FIG. 1;

FIG. 10 is a schematic cross-sectional view of the lancing assembly of FIG. 9 with the mounting portion removed;

FIG. 11 is a schematic perspective view of a cutter according to an embodiment;

FIG. 12 is a schematic perspective view of a cutter according to an embodiment;

FIG. 13 is a schematic perspective view of a cutter according to an embodiment;

fig. 14 is a schematic perspective view of a cutter according to an embodiment.

Reference numerals:

100. a lancing device; 101. a first sidewall; 102. a second sidewall; 103. a third sidewall; 104. a fourth sidewall;

1. a frame; 10. a first slide rail; 11. a second slide rail; 12. a first limiting member; 13. a first scale; 14. a second scale; 15. a fixing seat;

2. a loading assembly; 21. a rotating shaft; 22. a loading member; 23. a first locking member; 24. a limit part; 25. a second locking member; 26. a rotation stopping structure; 211. a first indicator; 261. a cambered surface structure; 262. a planar structure;

3. a lancing assembly; 31. a housing; 32. a second operating member; 33. a cutter; 34. a first mounting portion; 35. a second mounting portion; 36. an elastic member; 37. a limit cover plate; 38. a fixing member; 39. a third locking member; 311. an inner wall; 312. a guide part; 313. a second indicator; 321. an operation end; 322. a portion of the second operating member extending into the housing; 323. a cutter mounting groove; 331. a blocking structure; 341. a first slider; 351. a second slider; 352. a mounting hole;

4. a second drive assembly; 41. a first operating member; 42. a drive rail; 43. a second limiting piece;

5. an implant; 51. a bare stent; 52. coating a film; 53. cutting;

6. a first drive assembly.

Detailed Description

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

For ease of description, the following description uses the terms "proximal" and "distal", wherein "proximal" refers to the end proximal to the operator and "distal" refers to the end distal to the operator, the phrase "axial direction" being defined as the direction in which the central axis of the device connecting the proximal and distal ends is located, the direction perpendicular to the "axial direction" being defined as the "radial direction", and the "circumferential direction" being defined as the central axial direction around the device.

As shown in fig. 1, a lancing device 100 according to an embodiment of the present application for lancing an implant 5 includes:

a loading assembly that loads the implant;

a lancing assembly lancing the implant;

In this embodiment, the lancing device 100 further includes a frame 1, and the loading assembly 2 and the lancing assembly 3 are disposed on the frame 1. After loading the implant 5 in the expanded state onto the loading assembly 2, the lancing assembly 3 performs a lancing operation on the implant 5.

The lancing operation is completed through the lancing assembly 3, but a plurality of lancing operations are required to be performed on one implant 5 and are performed at different positions and in different directions, so that a first driving assembly 6 is arranged to drive the loading assembly 2 to move relative to the lancing assembly 3 in a first direction; a second driving component 4 is arranged to drive the lancing component 3 to move in a second direction relative to the loading component 2. By arranging different movement directions between the lancing assembly 3 and the loading assembly 2, lancing operations in different directions on the axis of the implant 5 can be realized, so that more comprehensively distributed lancing is generated on the surface of the implant 5. In addition, by controlling the movement displacement in the first direction and the movement displacement in the second direction, the cutting uniformity can be ensured. Compared with the prior art that the lancing is manually performed, the production efficiency is improved, the distribution uniformity of the lancing is improved, and the reject ratio of the implant 5 is reduced.

As shown in fig. 2, the implant 5 in this embodiment is a stent graft, at least including a bare stent 51 and a stent graft 52 wrapped on the outer surface of the bare stent 51, and the slit 53 is formed by processing the stent graft 52. In other embodiments, the implant 5 may be other medical devices requiring lancing.

After the covered stent is implanted into the aortic arch, the kerf areas on the covered stent are aligned to the branch positions on the arch, so that blood can flow into the branch blood vessels through the kerfs 53 of the covered stent 52, and the occlusion of the branch blood vessels is prevented; on the other hand, due to the existence of the tectorial membrane bracket kerf 53, the puncture system can perform in-situ windowing operation without rupture of membranes, and the operation difficulty of in-situ windowing is greatly reduced.

The straight line in which the first direction is located and the straight line in which the second direction is located may be parallel to each other, perpendicular to each other, or intersect. When the straight line in which the first direction is located and the straight line in which the second direction is located are parallel to each other, the first direction and the second direction may be the same or opposite.

In this embodiment, the straight line in which the first direction is located and the straight line in which the second direction is located are perpendicular to each other, where the first direction may be a circumferential direction, and the second direction is an axial direction, and in another embodiment, the first direction may be an axial direction, and the second direction is a circumferential direction. The implant 5 may be slit in the axial direction and the circumferential direction during the machining.

The following modes can meet the requirements, firstly, the loading assembly 2 rotates by taking the axis of the loading assembly as a rotating shaft 21 to realize the relative movement with the lancing assembly 3 in the circumferential direction, and meanwhile, the lancing assembly 3 moves along the axial direction of the loading assembly 2 to realize the relative movement with the loading assembly 2 in the axial direction; secondly, an annular track is arranged at the peripheral position of the loading assembly 2 by taking the axis of the loading assembly 2 as a central shaft, the lancing assembly 3 performs circular motion along the annular track to realize the relative motion of the lancing assembly 3 and the loading assembly 2 in the circumferential direction, and meanwhile, the loading assembly 2 performs linear motion along the direction of the axis of the loading assembly 2 to realize the relative motion with the lancing assembly 3 in the axial direction; thirdly, the kerf assembly 3 is kept still, the loading assembly 2 rotates by taking the axis of the loading assembly 2 as a rotating shaft 21, so that the loading assembly 2 and the kerf assembly 3 move relatively in the circumferential direction, and meanwhile, the loading assembly 2 moves linearly along the direction of the axis of the loading assembly 2, so that the loading assembly and the kerf assembly 3 move relatively in the axial direction; fourth, the loading assembly 2 is kept still, an annular track is arranged at the peripheral position of the loading assembly 2 by taking the axis of the loading assembly 2 as a central shaft, the lancing assembly 3 moves circularly along the annular track to realize the relative movement of the lancing assembly 3 and the loading assembly 2 in the circumferential direction, and meanwhile, the lancing assembly 3 moves linearly along the axial direction of the loading assembly 2 to realize the relative movement with the loading assembly 2 in the axial direction.

The machining of slits in the axial direction and in the circumferential direction of the implant 5 can be achieved in the above manner, and the embodiment of the present application is exemplified in the first manner.

In fig. 1, in the present embodiment, a frame 1 has a rectangular parallelepiped shape as a whole, and a loading assembly 2 is provided inside the frame 1. The frame 1 includes first lateral wall 101, second lateral wall 102, third lateral wall 103 and fourth lateral wall 104, wherein, first lateral wall 101, second lateral wall 102 are relative to be set up, third lateral wall 103, fourth lateral wall 104 are relative to be set up, first lateral wall 101, second lateral wall 102, third lateral wall 103 and fourth lateral wall 104 enclose the long square bodily form, loading assembly 2's both ends set up respectively at first lateral wall 101, second lateral wall 102, at least one of third lateral wall 103, fourth lateral wall 104 is provided with the structure of windowing, and this structure of windowing is on the one hand as loading assembly 2 that loads implant 5 puts into the passageway of frame 1, on the other hand can conveniently observe the condition of implant 5 in frame 1's inside. In fig. 3, the loading assembly 2 comprises a rotating shaft 21 and a loading member 22, the loading member 22 is sleeved on the outer part of the rotating shaft 21, and the implant 5 is sleeved on the loading member 22. Both ends of the rotating shaft 21 respectively pass through the first side wall 101 and the second side wall 102 of the frame 1, and are rotatably connected to the first side wall 101 and the second side wall 102 of the frame 1. One end of the rotating shaft 21 passes through the first side wall 101 of the frame 1 and is connected with the first driving component 6, and the first driving component 6 drives the rotating shaft 21 to rotate relative to the frame 1, so that the implant 5 moves on the frame 1 in the circumferential direction. In the present embodiment, the first driving component 6 has a knob structure, and the rotating shaft 21 is rotated by rotating the knob structure. In other embodiments, the first driving component 6 is a rocker structure, and the rotating shaft 21 is rotated by rocking the rocker structure. It will be appreciated that for the implementation of the rotation of the shaft 21, this may be by manual actuation or by a motor.

In an embodiment, referring to fig. 4, a first scale 13 corresponding to the first driving component 6 is disposed on the first side wall 101 of the frame 1, and under the marking and indication of the first scale 13, the first driving component 6 can be rotated by a required angle according to the requirement, so as to drive the rotating shaft to rotate by the required angle. In order to accurately rotate the first driving component 6, a first mark 211 is provided on the first driving component 6, and the first mark 211 can be a mark line, a mark arrow or a pointer, etc., so that a worker can conveniently rotate the first driving component 6 by a certain angle with reference to the first scale 13, and accurate rotation of the rotating shaft is realized.

Wherein, referring again to fig. 3, one end of the rotating shaft 21 passes through the second side wall 102 of the frame 1, and when the rotating shaft 21 rotates to a proper angle, the first locking member 23 is configured to be locked with one end of the rotating shaft 21. The first locking piece 23 is in threaded connection, clamping connection or pin connection with the rotating shaft 21, in one embodiment, threaded connection is achieved, an external thread is arranged on the surface of one end of the rotating shaft 21, the first locking piece 23 is a nut, and an internal thread of the nut is matched with an external thread of the rotating shaft 21 to achieve locking.

In some embodiments of the present application, the implant 5 is in an expanded state when being loaded onto the loading assembly 2, and each implant 5 has limited expansion capability and the cover film 52 is easily damaged, so that the shaft 21 is not directly connected to the implant 5, but is connected to the loading member 22, and the loading member 22 is made of soft biocompatible material such as silicone or rubber. The diameter of the loading piece 22 can be changed according to the implants 5 with different diameters, the diameter of the loading piece 22 needs to be smaller than the diameter of the implants 5 in an expanded state by 1-2mm, the implants 5 can be smoothly installed on the loading piece 22, and the implants 5 are not easy to rotate relative to the loading piece 22.

Referring to fig. 5 and 6, fig. 6 is a cross-sectional view taken along the direction A-A of fig. 5. In the present embodiment, the rotating shaft 21 is provided with the limiting portion 24, one end of the loading member 22 abuts against the limiting portion 24, and the other end is locked by the second locking member 25, so that the movement of the loading member 22 in the axial direction of the rotating shaft 21 is avoided. The limiting part 24 is a step surface machined on the rotating shaft 21, the second locking piece 25 is a nut, an external thread is arranged on the rotating shaft 21, and the second locking piece 25 is in threaded fit with the external thread to prevent the loading piece 22 from moving in the axial direction of the rotating shaft 21. In other embodiments, two second locking members 25 may be further provided for locking the relative position between the loading member 22 and the rotating shaft 21, where the two second locking members 25 lock the two ends of the loading member 22 respectively; or two step surfaces are provided, and two ends of the loading piece 22 respectively prop against the step surfaces.

The prevention of the movement of the loading member 22 and the rotation shaft 21 in the circumferential direction may be achieved by interference connection of the loading member 22 and the rotation shaft 21, by pin connection, or by a rotation stopping structure, which is not limited herein. In one embodiment, as shown in fig. 7, for locking of the loading member 22 and the rotation shaft 21 in the circumferential direction, this is achieved by providing the outer surface of at least a part of the region of the rotation shaft 21 as a rotation stopping structure 26, which rotation stopping structure 26 is track-like in view of the radial cross section of the rotation shaft 21, the rotation stopping structure 26 comprising an arc surface structure 261 and a plane structure 262, the arc surface structure 261 and the plane structure 262 being connected to each other, the two arc surface structures 261 being arranged opposite each other, and the two plane structures 262 being arranged opposite each other. In other embodiments, the rotation stopping structure 26 may be configured as a polygonal structure, that is, an outer surface of at least a portion of the area of the rotation shaft 21 is configured as a polygonal structure. The loading member 22 is matched with the rotating shaft 21 in a contour matching manner, namely, the outer contour of the rotating shaft is the hollow contour of the interior of the loading member, and the loading member and the rotating shaft are matched tightly. The rotation stopping structure 26 prevents the rotation of the rotating shaft 21 and the loader 22 relative to each other and allows the rotation of the two in synchronization with each other.

Referring to fig. 8, the movement of the lancing assembly 3 is effected by actuation of the second actuation assembly 4. In this embodiment, the second driving assembly 4 includes a first operating member 41 and a driving rail 42, two ends of the driving rail 42 are fixed to the first side wall 101 and the second side wall 102 of the frame 1, and one end of the first operating member 41 is connected to the driving rail 42. The lancing assembly 3 is movably connected to the drive rail 42, and the lancing assembly 3 is movable on the drive rail 42 by operating the first operating member 41 such that the lancing assembly 3 moves on the drive rail 42.

In an embodiment, the driving rail 42 and the lancing assembly 3 may be connected by threads, that is, external threads are provided on the surface of the driving rail 42, and internal threads are provided on the lancing assembly 3, and the internal threads and the external threads are matched with each other. The first operating member 41 is rotated to cause the slit assembly 3 to move in a spiral manner with respect to the drive rail 42, thereby allowing the slit assembly 3 to move on the drive rail 42. In an embodiment, the driving rail 42 and the lancing assembly 3 may also be matched by adopting a ball screw transmission mode. In an embodiment, the second driving assembly 4 may be further provided with no first operating member 41, the lancing assembly 3 is slidably connected with the driving rail 42, and the operator directly drives the lancing assembly 3 to slide on the driving rail 42 by hand and controls the sliding distance.

In the present embodiment, the first operation element 41 may be driven manually or automatically. When manual actuation is employed, the operator applies a force to the first operating member 41; when the automatic driving is adopted, the motor is connected with the first operation piece 41, and the starting and stopping of the motor are realized through the control of a PLC and the like.

In an embodiment, the first side wall 101 and the second side wall 102 of the frame 1 are respectively provided with a fixing seat 15, so that the driving rail 42 is rotatably connected to the frame 1, and the driving rail 42 can rotate relative to the fixing seats 15. Referring again to fig. 4, a second limiting member 43 is disposed at one end of the driving rail 42, one end of the driving rail 42 passes through the fixing seat 15, the fixing seat 15 has a through hole, and axial movement of the driving rail 42 can be prevented by the second limiting member 43 having an outer diameter larger than an inner diameter of the through hole of the fixing seat 15.

In some embodiments of the present application, as shown in fig. 9, the lancing assembly 3 includes a housing 31, a second operating member 32 and a cutter 33.

Referring to fig. 8 and 9, the first mounting portion 34 and the second mounting portion 35 are respectively disposed at two ends of the housing 31, and the first mounting portion 34 and the second mounting portion 35 are respectively slidably connected with the frame 1, and the driving rail 42 passes through the mounting hole 352 on the second mounting portion 35 and is movably connected with the second mounting portion 35, so that the movement of the lancing assembly 3 on the driving rail 42 is realized, and the first mounting portion 34 and the second mounting portion 35 are driven to slide on the frame 1 respectively. In this embodiment, the driving rail 42 and the mounting hole 352 may be connected by threads, that is, external threads are provided on the surface of the driving rail 42, and internal threads are provided in the mounting hole 352, and the internal threads and the external threads are mutually matched. In other embodiments, the drive rail 42 may pass through the first mounting portion 34 and be movably connected with the first mounting portion 34; or the drive rail 42 may pass through the housing 31 and be movably coupled to the housing 31.

Referring to fig. 10, a part of the second operating member 32 is located outside the housing 31 as an operating end 321, and another part of the second operating member 32 protrudes into the housing 31. The housing 31 is provided with a receiving groove, an elastic member 36 is disposed in the receiving groove, one end of the elastic member 36 abuts against a portion 322 of the second operating member extending into the housing, and the other end of the elastic member 36 abuts against an inner wall 311 of the housing 31. The shell 31 is further provided with a limiting cover plate 37, the limiting cover plate 37 is fixed with the shell 31 through a fixing piece 38, and the limiting cover plate 37 abuts against a part 322 of the second operation piece extending into the shell, so that the movement path of the part 322 of the second operation piece extending into the shell is limited, and meanwhile the elastic piece 36 is prevented from being ejected from the shell 31. By pressing the operation end 321, the elastic member 36 is pressed, the elastic member 36 is deformed, and after the pressing force is removed, the elastic member 36 is at least partially restored to the deformed state.

The number of the elastic members 36 is one, two or more, and is not limited herein, and the guiding portion 312 is further disposed in the housing 31, in this embodiment, the guiding portion 312 is a groove structure in the housing 31, one end of the elastic member 36 is disposed in the groove structure, and the width of the groove structure is not greatly different from the diameter of one end of the elastic member 36. The guide 312 prevents the spring 36 from being deflected and not compressed or recovered. In the present embodiment, the elastic member 36 is a spring, and in other embodiments, the elastic member 36 may be a spring plate.

The second operating member 32 is further provided with a cutter mounting groove 323, and one end of the cutter 33 is mounted in the cutter mounting groove 323. Referring to fig. 9 and 10, the number of cutters 33 may be 1 or more, and a plurality of cutters 33 correspond to a plurality of mounting grooves. The number of the cutters 33 is one or more, and three in the present embodiment, so that the machining efficiency can be improved. When the lancing process is performed, the second operating member 32 is driven to move the three cutters 33 downward simultaneously, and the three cutters 33 are arranged tightly, so that the width of the three cutters 33 is smaller than the width of the implant 5, and the uniform lancing process of the implant 5 can be realized.

As shown in fig. 11 to 14, the section of at least the portion of the cutter 33 near the distal end may be a U-shaped structure, a circular arc-shaped structure, a linear structure, or an elliptical structure. In fig. 12 to 14, in one embodiment, the cutter 33 is provided with a blocking structure 331 in the middle portion, which blocking structure 331 is capable of avoiding too deep insertion into the implant during lancing of the implant by the cutter 33, thereby puncturing the entire cavity of the implant and destroying areas where lancing is not required.

In one embodiment, the cutters 33 are detachably connected to the second operating member 32, so that the number of cutters 33 can be changed and cutters 33 with different shapes can be replaced. The cutter 33 and the second operating member 32 may be in threaded connection, clamped connection or pin connection, in one embodiment, threaded connection, and an inner thread is provided on an inner wall of the mounting groove 323, and an outer thread is provided on the cutter 33, and the inner thread and the outer thread are mutually matched. By means of this screw fit, the length of the cutter 33 extending out of the housing 31 can also be adjusted to accommodate implants 5 of different diameters. In an embodiment, the third locking member 39 is provided to cooperate with the external thread of the cutter 33, so that the reliability of the connection between the cutter 33 and the second operating member 32 is improved, the rotation of the cutter can be prevented, and the cutter deflection angle can be positioned.

The second operation member 32 drives the cutter 33 to move towards the direction of the implant 5 to perform lancing, and the second operation member 32 can be driven manually or automatically, and when manual driving is adopted, a worker applies an acting force to the first operation member; when the automatic driving is adopted, an air cylinder or a hydraulic cylinder is connected with the second operation piece 32, and the second operation piece 32 is driven by the air cylinder or the hydraulic cylinder, so that the downward movement of the cutter 33 is realized to cut the implant 5.

In this embodiment, referring again to fig. 8, the first slide rail 10 and the second slide rail 11 are provided on the frame 1, the first slider 341 is provided on the first mounting portion 34 of the lancing assembly 3, the second slider 351 is provided on the second mounting portion 35 of the lancing assembly 3, the first slider 341 slides on the second slide rail 11, and the second slider 351 slides on the first slide rail 10, so as to increase the stability of the lancing assembly 3 moving in the axial direction. The lancing assembly 3 moves on the driving rail 42, so that the first slider 341 and the second slider 351 are driven to slide on the frame 1 respectively.

Wherein, the first limiting members 12 are respectively disposed at two ends of the first sliding rail 10 and the second sliding rail 11, as a limitation to two ends of the first sliding rail 10 and the second sliding rail 11, the slit assembly 3 is prevented from being separated from the first sliding rail 10 and the second sliding rail 11 when moving in the axial direction, and the first limiting members 12 may be protrusions disposed at two ends of the first sliding rail 10 and the second sliding rail 11 or screws disposed at two ends of the first sliding rail 10 and the second sliding rail 11.

Referring again to fig. 3, in order to improve the control accuracy of the lancing assembly 3, the lancing 53 on the implant 5 is uniformly distributed in the axial direction, the second scale 14 corresponding to the lancing assembly 3 is provided on the frame 1, and the lancing assembly 3 corresponds to the second scale 14 by a distance required for realizing a single movement. In order to precisely move the lancing assembly 3, a second mark 313, which may be a mark line, a mark arrow, a pointer, or the like, is provided on the first mounting portion 34 or the second mounting portion 35 of the lancing assembly 3, so that a worker can precisely move the lancing assembly with reference to the second scale 14. It will be appreciated that the direction of the second scale 14 is parallel to the direction of movement of the lancing assembly 3.

In one embodiment, the first drive assembly and the second drive assembly are identical in construction, and the first direction of movement of the loading assembly relative to the lancing assembly is the same as or opposite to the second direction of movement of the lancing assembly relative to the loading assembly. Specifically, two lancing assemblies with the same structure can be provided, two driving assemblies with the same structure are provided, one driving assembly drives one lancing assembly to move in the same direction or in the opposite direction, lancing processing is performed on the implant 5, and the implant 5 is kept from rotating at the moment; or a lancing assembly is arranged, and the first driving assembly and the second driving assembly which have the same structure can respectively control the lancing assembly to move in the same direction or the opposite direction and perform lancing processing on the implant 5, so that the implant 5 is kept from rotating.

The lancing device 100 of this embodiment works as follows:

referring to fig. 3 and 8, the implant 5 is opened to an expanded state and loaded on the loading member 22, a proper cutter 33 is selected, the distance between the cutter 33 and the implant 5 is adjusted, the relative position between the rotating shaft 21 and the frame 1 is locked through the first locking member 23, and the axial initial position of the lancing assembly 3 on the frame 1 is selected, the second operating member 32 of the lancing assembly 3 is manually driven, so that the cutter 33 moves downwards to perform lancing processing on the implant 5, and after one processing is completed, the cutter 33 moves upwards under the action of the elastic member 34 to restore to the original position;

firstly, the relative position of the rotating shaft 21 and the lancing assembly 3 in the circumferential direction is adjusted through the first driving assembly 6, the lancing assembly 3 is kept at a fixed position in the axial direction, specifically, the first locking piece 23 is unscrewed, the first driving assembly 6 is rotated according to the first scale 13, so that the rotating shaft 21 is rotated, the relative position between the rotating shaft 21 and the frame 1 is locked by the first locking piece 23 after the next circumferential position of the lancing assembly 3 corresponding to the implant 5 is determined, when the processing of all the circumferential positions of the same axial position of the implant 5 (the circumferential position of the implant 5 requiring lancing) is completed, the first operating piece 41 of the second driving assembly 4 is operated, the lancing assembly 3 is driven to move in the axial direction according to the second scale 14, the lancing assembly 3 is driven to move to the next axial position, then the locking piece is locked, and the positions of the implant 5 and the lancing assembly 3 in the circumferential direction are adjusted, so that the lancing processing is carried out until the completion;

or, the first operation member 41 of the second driving assembly 4 is first used for adjusting the positions of the lancing assembly 3 and the frame 1 in the axial direction, keeping the positions of the implant 5 and the lancing assembly 3 in the circumferential direction unchanged, specifically, the first operation member 41 is operated to move the lancing assembly 3 in the axial direction, the next axial position of the cutter 33 is determined according to the second scale 14, after the lancing process is completed at all axial positions of the machined implant 5 in the same circumferential position (the axial position of the implant 5 requiring lancing), the first driving assembly 6 is adjusted, so that the relative position of the rotating shaft 21 and the lancing assembly 3 in the circumferential direction is adjusted, the first locking member 23 is unscrewed, the rotating shaft 21 is rotated according to the first scale 13, the relative position between the rotating shaft 21 and the frame 1 is locked by the first locking member 23, and the cutter 33 is driven by the second operation member 32 until the machining in the axial direction is completed.

The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A lancing device for lancing an implant, comprising:

the loading assembly comprises a loading piece, and the implant body is sleeved on the loading piece;

a lancing assembly lancing the implant, the lancing assembly including a cutter for lancing;

and the second driving assembly drives the lancing assembly to move in a second direction relative to the loading assembly so as to lance in the axial direction and the circumferential direction of the implant.

2. The lancing device of claim 1, further comprising a frame, wherein the loading assembly and the lancing assembly are both disposed on the frame.

3. The lancing device of claim 2, wherein the loading assembly further comprises:

the rotating shaft is rotatably connected to the frame, and the loading piece is sleeved on the rotating shaft.

4. The lancing device of claim 3, wherein the first drive assembly is coupled to one end of the shaft, the first drive assembly driving the shaft to rotate;

5. The lancing device of claim 3, wherein the loading assembly further comprises a second lock;

6. The lancing device of claim 3, wherein the outer surface of the shaft is provided with a rotation stopping structure, and the inner surface of the loading member and the rotation stopping structure of the shaft cooperate with each other to relatively rest the loading member and the shaft for mutual fixation.

7. The lancing device of claim 2, wherein the frame is provided with a second scale corresponding to the lancing assembly;

8. The lancing apparatus of claim 7, wherein the second drive assembly further comprises a first operating member, one end of the drive rail being coupled to the first operating member, the drive rail being threadably engaged with the lancing assembly, the first operating member driving the drive rail relative to the lancing assembly.

9. The lancing device of claim 7 wherein the lancing assembly comprises:

the second operating piece is positioned outside the shell, the other part of the second operating piece stretches into the shell, an accommodating groove is formed in the shell, an elastic piece is arranged in the accommodating groove, one end of the elastic piece is propped against the part, stretching into the shell, of the second operating piece, and the other end of the elastic piece is propped against the inner wall of the shell; the cutter is connected to the second operating piece, and the second operating piece drives the cutter to cut.

10. The lancing device of claim 9, wherein the frame is provided with a rail, the housing is provided with a mounting portion, the mounting portion is slidably coupled to the rail, and when the housing moves on the drive rail, the mounting portion is driven to slide on the rail.