CN220632131U - Auxiliary support for interventional therapy instrument - Google Patents
Auxiliary support for interventional therapy instrument Download PDFInfo
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- CN220632131U CN220632131U CN202321762297.6U CN202321762297U CN220632131U CN 220632131 U CN220632131 U CN 220632131U CN 202321762297 U CN202321762297 U CN 202321762297U CN 220632131 U CN220632131 U CN 220632131U
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- sliding block
- handle
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- base
- locking
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- 238000002560 therapeutic procedure Methods 0.000 title claims description 8
- 230000001225 therapeutic effect Effects 0.000 claims abstract description 30
- 238000002513 implantation Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000007943 implant Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013152 interventional procedure Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000003709 heart valve Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000004115 mitral valve Anatomy 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The utility model provides an auxiliary bracket for an interventional therapeutic instrument, which comprises the following components: the sliding rail is provided with a first sliding block, a second sliding block and a third sliding block in sequence; the first sliding block, the second sliding block and the third sliding block are respectively provided with a fixed seat; the fixing seat comprises a base, a fixing ring and a locking module, wherein bosses are arranged on the base and the fixing ring, a first groove corresponding to the bosses is arranged on a handle of the interventional therapeutic apparatus, and when the base and the fixing ring are buckled, the bosses are matched with the first groove to restrict the axial movement of the handle of the interventional therapeutic apparatus without limiting the circumferential rotation of the handle; the locking module is used for locking the base and the fixed ring and limiting the circumferential rotation of the handle of the interventional therapeutic instrument. The instrument can steplessly adjust the rotating angle of the handle, flexibly lock the attitude angle of the handle, facilitate the use of operators, and greatly improve the operation convenience and safety of the operation.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to an auxiliary bracket for an interventional therapy instrument.
Background
Interventional medical devices in the prior art often include a plurality of modules, each module performing a different function, the modules cooperating with each other to perform a corresponding interventional procedure task. Related interventional medical devices often have different external configurations and operating requirements, and therefore require adapting a specific auxiliary stent for a specific model of interventional medical device, in other words, the related auxiliary stent lacks versatility. In practice, the handle of some interventional medical devices needs to rotate steplessly, while the auxiliary support in the prior art can only support the handle to rotate under specific angles, so that the operation purpose of interventional therapy cannot be achieved. In other situations, the handle of the interventional instrument is often simply mounted on a bracket, and lacks a quick and convenient locking and unlocking device, resulting in poor mounting stability of the interventional instrument. Furthermore, several modules of some interventional devices need to be capable of switching between coordinated control and independent control to ensure the implantation safety of the interventional device, but no stent capable of meeting the application requirements is known in the related art. In summary, the instruments in the prior art have the problems of complex operation, inconvenient use, poor safety, lack of auxiliary brackets meeting specific operation requirements, and the like.
Disclosure of Invention
To overcome at least one of the problems in the related art, the present application provides an auxiliary stent for an interventional therapeutic device, comprising:
the sliding rail is provided with a first sliding block, a second sliding block and a third sliding block in sequence;
the first sliding block, the second sliding block and the third sliding block are respectively provided with a fixed seat;
the fixing seat comprises a base, a fixing ring and a locking module, wherein,
the base and the fixed ring are respectively provided with a boss, the handle of the interventional therapeutic apparatus is provided with a first groove corresponding to the boss, and when the base and the fixed ring are buckled, the boss is matched with the first groove to restrict the axial movement of the handle of the interventional therapeutic apparatus without limiting the circumferential rotation of the handle;
the locking module is used for locking the base and the fixed ring and limiting the circumferential rotation of the handle of the interventional therapeutic instrument.
In an alternative embodiment, the locking module includes a push button and a locking knob, wherein,
one end of the button is connected to the base in a swinging way, and when the base is buckled with the fixing ring, the other end of the button can be clamped on the fixing ring to lock the base and the fixing ring;
the locking knob is arranged on the fixed ring and can extend to the handle through the fixed ring so as to limit the circumferential rotation of the handle.
In an alternative embodiment, the locking knob includes a handle portion and a locking screw that is threadably engaged with the retaining ring and extends toward the handle to limit circumferential rotation thereof.
In an alternative embodiment, the locking module comprises a locking wrench and a fixed ring connecting rod, wherein,
one end of the fixed ring connecting rod is pivotally connected with the base, and the other end of the fixed ring connecting rod is pivotally connected with the locking spanner;
the end part of the locking spanner, which is connected with the fixed ring connecting rod, is provided with an eccentric structure, the fixed ring is provided with a connecting part matched with the eccentric structure, and when the base and the fixed ring are buckled, the eccentric structure is abutted against the connecting part of the fixed ring to lock the base and the fixed ring.
In an optional embodiment, a second groove is formed in a side wall of the fixing ring connecting rod, and a clamping structure is arranged on the connecting portion of the fixing ring, so that when the fixing ring connecting rod is embedded into the connecting portion, the clamping structure is clamped into the second groove to limit separation of the base and the fixing ring.
In an alternative embodiment, the locking structure includes a spring and a steel ball, and the spring pushes the steel ball to lock the steel ball with the second groove.
In an alternative embodiment, a clasping portion is provided on an inner surface of at least one of the base and the fixing ring, and when the eccentric structure abuts against the connecting portion of the fixing ring to lock the base and the fixing ring, the clasping portion abuts against the handle of the interventional therapeutic apparatus synchronously to limit circumferential rotation of the interventional therapeutic apparatus.
In an alternative embodiment, the first sliding block can independently slide along the sliding rail;
the connecting rod is connected in front of the second sliding block and the third sliding block, and the second sliding block synchronously drives the third sliding block to slide along the sliding rail when sliding along the sliding rail.
In an alternative embodiment, the interventional instrument includes a catheter sheath, a delivery sheath, and an implant sheath;
the fixing seat arranged on the first sliding block is used for installing a handle of the catheter sheath, the fixing seat arranged on the second sliding block is used for installing a handle of the delivery sheath, and the fixing seat arranged on the third sliding block is used for installing a handle of the implantation sheath.
In an alternative embodiment, if the delivery sheath is moved, the second slider and the third slider slide synchronously along the sliding rail; if the conveying sheath is in a control sheath bending mode, the third sliding block drives the implantation sheath to independently slide along the sliding rail.
The technical scheme of the application has the following advantages or beneficial effects:
(1) According to the handle, the boss is arranged in the base and the fixing ring respectively to be in clearance fit with the annular first groove on the outer surface of the handle of the interventional therapeutic device, so that the handle of the interventional therapeutic device can rotate continuously in the fixing base but cannot move along the axis in the fastening state of the base and the fixing ring, and an operator can adjust the rotation angle of the handle randomly conveniently without the problem that the handle is separated from the fixing base. As the base and the fixing ring are provided with the bosses, a user only needs to align the bosses on the base with the first grooves during assembly, and whether the bosses of the fixing ring are aligned with the first grooves does not need to be considered, so that an operator can conveniently install the handle in the fixing seat. After the angle adjustment of the handle is completed, the fixing seat is locked through the locking module to indirectly lock the posture of the handle, so that an operator can conveniently fix the rotation angle of the handle.
(2) The locking spanner can be locked and fixed by the base and the fixing ring only by pulling the locking spanner, and the circumferential locking of the handle is visual in locking state. And the time for an operator to adjust the instrument is reduced, the operation time is shortened, the operator can observe the locking state and the loosening state of the locking structure conveniently, and the operation safety of the instrument is improved.
(3) The structure design of hierarchical locking is adopted, the clamping structure and the second groove form a first-stage locking, and the connecting part of the eccentric structure and the fixed ring forms a second-stage locking. When the second-stage locking structure is unlocked, the first-stage locking can provide a stable locking effect, so that the fixed ring and the base are not separated in the whole operation process, the handle of the interventional therapeutic instrument cannot move along the axial direction, and an operator can rotate the handle steplessly as required to obtain a required posture angle.
(4) The mechanical connecting structure of the connecting rod can ensure the stable linkage of the second sliding block and the third sliding block, and the risk that the implant in front of the delivery sheath is pulled off is avoided. The third sliding block is independently controlled to move so as to drive the implantation sheath to move, so that the implantation sheath can be effectively adapted to various structural deformations caused by the sheath tube, and the safety of the instrument is improved.
Drawings
The drawings are included to provide a better understanding of the present application and are not to be construed as unduly limiting the present application. Wherein:
FIG. 1 is a schematic view of an interventional instrument assembled to an auxiliary stent according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a fixing base according to an embodiment of the present application;
FIG. 3 is a schematic view of the embodiment of FIG. 2 in an open position;
FIG. 4 is a schematic illustration of the mounting of the holder and handle of the embodiment of FIG. 2;
FIG. 5 is a schematic illustration of the assembled state of the holder of the embodiment of FIG. 2;
FIG. 6 is a schematic view of another fixing base according to an embodiment of the present application;
FIG. 7 is a schematic diagram showing a locked state of the fixing base of the embodiment shown in FIG. 6;
fig. 8 is a schematic diagram of the assembled state of the fixing base of the embodiment shown in fig. 6.
Detailed Description
Exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to facilitate understanding, and should be considered as merely exemplary. Accordingly, one of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
The application of interventional medical devices in the field of heart valve treatment is becoming more and more widespread, and how to improve the ease of use and safety of the devices is a core design requirement in the field. For this reason, the prior art often adapts suitable auxiliary stents for interventional medical devices to support their surgical operation. To address at least one of the problems mentioned in the background section, and in particular the lack of a matching auxiliary stent for an interventional medical device of the specific configuration mentioned herein, the present application provides an auxiliary stent for an interventional medical device comprising: the sliding rail is provided with a first sliding block, a second sliding block and a third sliding block in sequence; the first sliding block, the second sliding block and the third sliding block are respectively provided with a fixed seat; the fixing seat comprises a base, a fixing ring and a locking module, wherein bosses are respectively arranged on the base and the fixing ring, a first groove corresponding to the bosses is arranged on a handle of the interventional therapeutic apparatus, and when the base and the fixing ring are buckled, the bosses are matched with the first groove to restrict the axial movement of the handle of the interventional therapeutic apparatus without limiting the circumferential rotation of the handle; the locking module is used for locking the base and the fixed ring and limiting the circumferential rotation of the handle of the interventional therapeutic instrument.
The auxiliary support is mainly applicable to the specific interventional therapy instrument shown in fig. 1. The interventional therapy device comprises a catheter sheath 101, a delivery sheath 102 and an implantation sheath 103, wherein the delivery sheath 102 and the implantation sheath 103 are in an inseparable structure. During operation, the handles of the catheter sheath 101 and the delivery sheath 102 need to rotate clockwise or counterclockwise along their own axes, and the operator often reciprocates a plurality of times to adjust the rotation angle, and the rotation angle is continuously changed. After rotating in place, the handle needs to be stably fixed to maintain the adjusted rotation angle. Thus, how to rotate the handle and the convenient locking handle steplessly is a primary consideration in the design of the auxiliary bracket. To this end, the present application provides an auxiliary stent for an interventional therapeutic apparatus to solve the above-mentioned problems. Specifically, the auxiliary stand includes: the sliding rail is provided with a first sliding block 121, a second sliding block 122 and a third sliding block 123 in sequence. In one embodiment, in order to reduce the processing cost and facilitate assembly, the three sliding blocks are of the same structural design, guide grooves matched with the sliding rails are formed in the bottoms of the three sliding blocks, and the guide grooves are buckled on the sliding rails during assembly so as to slide along the sliding rails. Preferably, rolling structures are provided on the mating surfaces of the guide channel and the slide rail to reduce sliding friction therebetween, such as by mounting balls on the mating surfaces therebetween. Further, the first slider 121 is provided with a first handle 111; the second slider 122 is equipped with a second handle 112; the third slider 123 is provided with a third handle 113; after each sliding block slides to the target position, the sliding block can be locked on the sliding rail through the corresponding locking handle (the first handle, the second handle or the third handle). In one embodiment, two sliding rails are provided, wherein the first sliding block 121 and the second sliding block 122 share one sliding rail, and the third sliding block 123 uses the other sliding rail separately. The top of the first slider 121, the second slider 122 and the third slider 123 are provided with mounting positions, and the mounting positions are respectively provided with a fixing seat. Specifically, the fixing seat can be assembled on the mounting position through a detachable structure such as a screw. As shown in fig. 2 to 4, the fixing base includes a base 205, a fixing ring 203, and a locking module. The base 205 and the fixing ring 203 are respectively in semicircular structures, and form a circular ring structure when they are buckled to accommodate the handle of the interventional therapeutic apparatus. Wherein, the base 205 and the fixing ring 203 are respectively provided with a boss 402, the two bosses 402 are spliced into an approximate circular ring, and the handle of the interventional therapeutic apparatus is provided with an annular first groove 401 corresponding to the boss 402. In the example shown in fig. 4, the boss 402 is disposed on the inner surfaces of the base 205 and the fixing ring 203, the first groove 401 is disposed on the outer surface of the handle of the interventional medical device, and when the base 205 and the fixing ring 203 are buckled, the boss 402 is embedded into the first groove 401 for matching purposes. It should be noted that, when the boss 402 is matched with the first groove 401, the boss 402 is in clearance fit with the first groove 401, in other words, when the base 205 and the fixing ring 203 are buckled, the boss 402 does not press the handle, so that the boss 402 and the first groove 401 only restrict the axial movement of the handle of the interventional therapeutic apparatus, but do not restrict the circumferential rotation thereof. Therefore, the boss 402 is arranged in the base 205 and the fixed ring 203 so as to be in clearance fit with the annular first groove 401 on the outer surface of the handle of the interventional therapeutic device, so that the handle of the interventional therapeutic device in the buckled state of the base 205 and the fixed ring 203 can rotate in the fixed seat in a stepless manner but cannot move along the axis, and an operator can conveniently and randomly adjust the rotation angle of the handle without causing the problem that the handle is separated from the fixed seat. Since the boss 402 is disposed on both the base 205 and the fixing ring 203, a user only needs to align the boss 402 on the base 205 with the first groove 401 during assembly, regardless of whether the boss 402 of the fixing ring 203 is aligned with the first groove 401, so that the operator can conveniently install the handle in the fixing base. Further, the locking module is used for locking the base 205 and the fixing ring 203 and limiting the circumferential rotation of the handle of the interventional therapeutic device. After the angle adjustment of the handle is completed, the fixing seat is locked through the locking module to indirectly lock the posture of the handle, so that an operator can conveniently fix the rotation angle of the handle.
In an alternative embodiment, the locking module includes a button 204 and a locking knob, where one end of the button is connected to the base 205 in a swinging manner, and when the base 205 and the fixing ring 203 are buckled, the other end of the button can be clamped on the fixing ring 203 to lock the base 205 and the fixing ring 203; the locking knob is arranged on the fixed ring 203 and can extend to the handle through the fixed ring 203 to limit the circumferential rotation of the handle. In the examples shown in fig. 2 and 3, the main structures of the base 205 and the fixing ring 203 are both semicircular structures, and the bosses 402 are correspondingly distributed on the respective inner walls, and the two bosses 402 also approximately form a circular ring structure. One end of the base 205 is hinged to one end of the fixing ring 203, so that the fixing ring 203 can rotate relative to the base 205 around a hinge point between the two, and further achieve the purpose of opening and closing or buckling. Accordingly, one end of the button 204 is hinged to the other end of the base 205, and can rotate or swing around one end of the base 205. The other end of the button 204 is provided with a clamping groove, the other end of the fixed ring 203 is provided with a clamping position, and when the base 205 is buckled with the fixed ring 203, the clamping groove is embedded with the clamping position through rotating the button 204, so that the fixed ring 203 and the base 205 are locked. The locking knob is arranged on the fixed ring 203 and can rotate on the fixed ring 203, and when the degree of freedom of the circumferential rotation of the handle needs to be locked, the locking knob can be limited to rotate circumferentially only by screwing into the fixed ring 203 and abutting against the surface of the handle. The embodiment shown in fig. 5 shows a schematic view of such a holder assembled on an auxiliary support.
In an alternative embodiment, the locking knob includes a handle 201 and a locking screw 202, where the locking screw 202 is in threaded engagement with the retaining ring 203 and extends toward the handle to limit circumferential rotation thereof. As shown in fig. 2, the locking screw 202 of the locking knob is matched with a threaded hole on the fixing ring 203, the threaded hole is a through hole, the length of the locking screw 202 is greater than that of the through hole, and the locking screw 202 can be abutted against the surface of the handle after being screwed into the through hole.
In an alternative embodiment, the locking module includes a locking wrench 605 and a fixed ring connecting rod 604, wherein one end of the fixed ring connecting rod 604 is pivotally connected to the base 205, and the other end of the fixed ring connecting rod 604 is pivotally connected to the locking wrench 605; the end of the locking wrench 605 connected with the fixed ring connecting rod 604 is provided with an eccentric structure, the fixed ring 203 is provided with a connecting part matched with the eccentric structure, and when the base 205 and the fixed ring 203 are buckled, the eccentric structure abuts against the connecting part of the fixed ring 203 to lock the base 205 and the fixed ring 203. In the embodiment shown in fig. 6 and 7, in order to reduce the locking difficulty of the base 205 and the fixing ring 203 and improve the locking efficiency of an operator, a locking module is further provided in this example. The locking module can lock the base 205 and the fixing ring 203 by a locking wrench 605. Specifically, the non-hinged ends of the base 205 and the fixing ring 203 are respectively provided with a connecting portion, and the two connecting portions are respectively provided with a concave structure. The concave structure on the base 205 is used for installing a fixed ring connecting rod 604, the fixed ring connecting rod 604 can rotate in the concave structure, and when the base 205 and the fixed ring 203 are buckled, the fixed ring connecting rod 604 can be embedded in the concave structure of the fixed ring 203. Further, one end of the locking wrench 605 has an eccentric structure having a profile similar to a cam mechanism. When the locking wrench 605 drives the fixed ring connecting rod 604 to rotate and is embedded into the groove structure of the fixed ring 203, and then the locking wrench 605 is pulled again to rotate along the hinge point with the fixed ring connecting rod 604, and simultaneously, the cam structure is abutted against the upper surface of the connecting part of the fixed ring 203 and gradually extrudes the upper surface, so that the purpose of locking the base 205 and the fixed ring 203 is finally achieved. Preferably, the main body structure of the locking wrench 605 is arc-shaped, and the arc-shaped is matched with the outer contour of the fixing ring 203. The free end of the locking wrench 605 is slightly bent to a side away from the stationary ring 203, and the bent structure facilitates the manual manipulation of the wrench by an operator. Correspondingly, in this embodiment, the inner walls of the base 205 and the fixing ring 203 are also provided with opposite bosses 602, and the two bosses 602 are combined into an approximate circular ring structure. It should be noted that, in the interventional operation process, the handle needs to be repeatedly and frequently locked and unlocked to perform circumferential rotation according to actual situations, so how to reduce the time for an operator to adjust the instrument will greatly affect the operation time. Furthermore, how to make the operator clearly aware or observe the locking state and the loosening state of the locking mechanism is an important premise for improving the operation safety of the instrument, otherwise, the subsequent operation will have a great surgical risk in the case of unlocking the instrument. Thus, the example shown in fig. 6 and 7 can achieve the locking of the base 205 and the fixing ring 203 and the circumferential locking fixation of the handle by simply pulling the locking wrench 605, and the locking state is intuitive.
In an alternative embodiment, a second groove is formed on a side wall of the fixing ring connecting rod 604, and a clamping structure 603 is disposed on a connecting portion of the fixing ring 203, and when the fixing ring connecting rod 604 is embedded in the connecting portion, the clamping structure is clamped into the second groove to limit the separation of the base 205 and the fixing ring 203. In order to achieve the purpose of step-locking, in one embodiment of the present application, a second groove is further formed on the side wall of the fixing ring connecting rod 604, and a clamping structure is disposed in the concave structure of the connecting portion of the fixing ring 203, and the buckled base 205 and the fixing ring 203 are locked together by the clamping structure and the second groove. In an alternative embodiment, the second grooves may be disposed on two sidewalls of the fixing ring connecting rod 604 along the axial direction of the fixing base, and the clamping structures are correspondingly disposed on two sides of the concave structure of the fixing ring 203, so as to improve the connection stability of the base 205 and the fixing ring 203 through the two sides of the concave structure. It should be noted that, in this design, in order to prevent that the handle from breaking away from the fixing base, but the structural design of hierarchical closure has been adopted, joint structure and second recess form the closure of first level, eccentric structure and solid fixed ring connecting portion form the closure of second level. When the second-stage locking structure is unlocked, the first-stage locking can provide a stable locking effect, so that the fixed ring 203 and the base 205 are not separated in the whole operation process, the handle of the interventional therapeutic instrument cannot move along the axial direction, and an operator can rotate the handle steplessly as required to obtain a required posture angle.
In an alternative embodiment, the locking structure includes a spring and a steel ball, and the spring pushes the steel ball to lock the steel ball with the second groove. In order to reduce the production difficulty and the complexity of structural design, a clamping structure is constructed by adopting a spring and a steel column. Correspondingly, a mounting blind hole can be machined on the side wall of the concave structure of the fixing ring 203 to mount the spring and the steel ball. It should be noted that the assembled spring is always in a compressed state, so that the side wall of the concave structure at the pushing position is just pushed out, and the second groove is convenient to match.
In an alternative embodiment, a clasping portion 601 is provided on an inner surface of at least one of the base 205 and the fixing ring 203, and when the eccentric structure abuts against the connecting portion of the fixing ring 203 to lock the base 205 and the fixing ring 203, the clasping portion abuts against the handle of the interventional therapeutic apparatus synchronously to limit circumferential rotation thereof. The enclasping part 601 is arranged to synchronously utilize the enclasping part to squeeze the outer surface of the handle when locking the eccentric structure, so as to achieve the purpose of fixing the circumferential freedom degree of the handle. In addition, in order to improve stability of fixing the handle, a structure for increasing friction force may be provided on the clasping portion. The enclasping part can be arranged to have enough width and length, so that the contact area between the enclasping part and the handle is increased, and the connection stability of the enclasping part and the handle is improved. Furthermore, the increased contact area can reduce the local pressure on the contact surface, so that the problem of local damage caused by excessive extrusion of the handle is avoided.
In an alternative embodiment, the first slider 121 may slide independently along a sliding rail; the connecting rod 502 is connected before the second slider 122 and the third slider 123, and the second slider 122 synchronously drives the third slider 123 to slide along the sliding rail when sliding along the sliding rail. In the example shown in fig. 1, 5 and 8, during a surgical procedure, an operator is often required to control the movement of the delivery sheath 102 and the implant sheath 103 simultaneously when operating the interventional instrument shown in fig. 1. In other words, it is necessary to link the implantation sheath 103 and the delivery sheath 102. For this, in one example of the present application, mounting positions are provided on the second slider 122 and the third slider 123, respectively, and the connection lever 502 is mounted on the mounting positions. The mechanical connection structure of the connecting rod 502 ensures stable linkage between the second slider 122 and the third slider 123. In an alternative embodiment, the interventional instrument comprises a catheter sheath 101, a delivery sheath 102 and an implant sheath 103; the fixing seat arranged on the first sliding block 121 is used for installing the handle of the catheter sheath 101, the fixing seat arranged on the second sliding block 122 is used for installing the handle of the delivery sheath 102, and the fixing seat arranged on the third sliding block 123 is used for installing the handle of the implantation sheath 103. In an alternative embodiment, the second slider 122 and the third slider 123 slide synchronously along the sliding rail when the delivery sheath 102 is moved; if the delivery sheath 102 is in a controlled sheath bending configuration, the third slider 123 drives the implantation sheath 103 to independently slide along the sliding rail. In the interventional instrument shown in fig. 1, the delivery sheath 102 and the implant sheath 103 are one integral instrument, both of which are inseparable and the diameter of the implant is larger than the inner diameter of the delivery sheath 102, so that if both the delivery sheath 103 and the delivery sheath 102 are not moved simultaneously during implantation, for example, the delivery sheath 102 is moved only while the implant sheath 103 is kept stationary, there is a risk that the implant in front of the delivery sheath 102 will be pulled off, i.e. that the implant will fall into the body, which is a very dangerous situation in the interventional procedure. Thus, in this embodiment, the delivery sheath 102 and the implant sheath 103 are secured for synchronous movement by the provision of the connecting rod 502. In addition, the fixing base on the third slider 123 can move independently, mainly because the sheath tube is compressed after the delivery sheath 102 is bent, that is, although the sheath tube is preloaded with a matched length at first, the distal end of the implantation sheath 103 will grow out of a section after the sheath tube is compressed, for example, the surgical site of the implant will span the valve during the mitral valve operation, so that the implantation sheath 103 needs to be pulled back out a certain distance as a whole with the compression amount of the delivery sheath 102. Therefore, the third sliding block 123 is independently controlled to move so as to drive the implantation sheath 103 to move, so that various structural deformations caused by the sheath tube can be effectively adapted, and the safety of the instrument is improved. In practice, the synchronous movement of the fixed seat on the third slider 123 and the fixed seat on the second slider 122 may be released in various manners, for example, the physical connection between the second slider 122 and the third slider 123 is released, which is not particularly limited herein.
The above embodiments do not limit the scope of the application. Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosed subject matter. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (7)
1. An auxiliary stent for an interventional therapy device, comprising:
the sliding rail is provided with a first sliding block, a second sliding block and a third sliding block in sequence;
the first sliding block, the second sliding block and the third sliding block are respectively provided with a fixed seat;
the method is characterized in that:
the fixing seat comprises a base, a fixing ring and a locking module, wherein,
the base and the fixed ring are respectively provided with a boss, the handle of the interventional therapeutic apparatus is provided with a first groove corresponding to the boss, and when the base and the fixed ring are buckled, the boss is matched with the first groove to restrict the axial movement of the handle of the interventional therapeutic apparatus without limiting the circumferential rotation of the handle;
the locking module is used for locking the base and the fixed ring and limiting the circumferential rotation of the handle of the interventional therapeutic instrument;
the locking module comprises a locking spanner and a fixed ring connecting rod, wherein,
one end of the fixed ring connecting rod is pivotally connected with the base, and the other end of the fixed ring connecting rod is pivotally connected with the locking spanner;
the end part of the locking spanner, which is connected with the fixed ring connecting rod, is provided with an eccentric structure, the fixed ring is provided with a connecting part matched with the eccentric structure, and when the base and the fixed ring are buckled, the eccentric structure is abutted against the connecting part of the fixed ring to lock the base and the fixed ring.
2. The auxiliary support according to claim 1, wherein,
the side wall of the fixed ring connecting rod is provided with a second groove, the connecting part of the fixed ring is provided with a clamping structure, and when the fixed ring connecting rod is embedded into the connecting part, the clamping structure is clamped into the second groove to limit the separation of the base and the fixed ring.
3. The auxiliary support according to claim 2, wherein,
the clamping structure comprises a spring and a steel ball, and the spring pushes the steel ball to enable the steel ball to be clamped with the second groove.
4. The auxiliary support according to claim 3, wherein,
and when the eccentric structure is abutted against the connecting part of the fixed ring to lock the base and the fixed ring, the enclasping part is synchronously abutted against the handle of the interventional therapeutic instrument to limit the circumferential rotation of the interventional therapeutic instrument.
5. The auxiliary support according to claim 1, wherein,
the first sliding block can independently slide along the sliding rail;
the connecting rod is connected in front of the second sliding block and the third sliding block, and the second sliding block synchronously drives the third sliding block to slide along the sliding rail when sliding along the sliding rail.
6. The auxiliary support according to claim 1, wherein,
the interventional therapy device comprises a catheter sheath, a delivery sheath and an implantation sheath;
the fixing seat arranged on the first sliding block is used for installing a handle of the catheter sheath, the fixing seat arranged on the second sliding block is used for installing a handle of the delivery sheath, and the fixing seat arranged on the third sliding block is used for installing a handle of the implantation sheath.
7. The auxiliary support according to claim 6, wherein,
if the conveying sheath is moved, the second sliding block and the third sliding block synchronously slide along the sliding rail; if the conveying sheath is in a control sheath bending mode, the third sliding block drives the implantation sheath to independently slide along the sliding rail.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023102310622 | 2023-03-13 | ||
| CN202310231062.2A CN115944370A (en) | 2023-03-13 | 2023-03-13 | Auxiliary support for interventional therapy instrument |
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| Publication Number | Publication Date |
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| CN220632131U true CN220632131U (en) | 2024-03-22 |
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| CN202310231062.2A Pending CN115944370A (en) | 2023-03-13 | 2023-03-13 | Auxiliary support for interventional therapy instrument |
| CN202321762297.6U Active CN220632131U (en) | 2023-03-13 | 2023-07-06 | Auxiliary support for interventional therapy instrument |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310231062.2A Pending CN115944370A (en) | 2023-03-13 | 2023-03-13 | Auxiliary support for interventional therapy instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5058931A (en) * | 1988-11-28 | 1991-10-22 | Gustin-Bacon Division, A Division Of Tyler Pipe | Clamp with teeth for grooved pipes |
| CN203185194U (en) * | 2013-04-24 | 2013-09-11 | 晋西工业集团有限责任公司 | Cylindrical workpiece fastening fixture |
| CN211220470U (en) * | 2019-11-27 | 2020-08-11 | 南京迦南比逊科技有限公司 | Device for quickly locking hoop |
| CN214632373U (en) * | 2020-12-14 | 2021-11-09 | 上海汇禾医疗科技有限公司 | Medical instrument positioning mechanism |
| CN214024318U (en) * | 2020-12-24 | 2021-08-24 | 东莞市意配汽车配件制造有限公司 | Air filter element hot plate welding fixture |
| CN218527035U (en) * | 2022-10-13 | 2023-02-28 | 刘歆 | Flower and tree frame |
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