CN109602524B

CN109602524B - Fixing device for interventional medical instrument

Info

Publication number: CN109602524B
Application number: CN201811251185.8A
Authority: CN
Inventors: 姚斌
Original assignee: Lifetech Scientific Shenzhen Co Ltd
Current assignee: Shenzhen Jianxin Medical Technology Co ltd
Priority date: 2018-10-25
Filing date: 2018-10-25
Publication date: 2022-04-05
Anticipated expiration: 2038-10-25
Also published as: CN109602524A

Abstract

The invention discloses a fixing device of an interventional medical instrument, which comprises a fixing component and a gasket provided with a through hole, wherein the gasket is used for being attached to the outer surface of an organ, the fixing component is detachably connected with the gasket, a stay wire channel is arranged inside the fixing component, a stay wire of the interventional medical instrument penetrates out of the organ and sequentially penetrates through the through hole and the stay wire channel, the length of the stay wire can be adjusted when the stay wire channel is opened, and the length of the stay wire is fixed when the stay wire channel is closed. Above-mentioned fixing device is small, simple structure, and simultaneously, easy operation can accomplish fixed and the adjustment to acting as go-between fast, and in addition, great with the area of contact of acting as go-between, can avoid acting as go-between impaired or fixed inefficacy, guarantee patient's safe in utilization, overall structure is small and exquisite again, and is good with the laminating nature of internal organs, avoids acting as go-between to wear out the position and leaks the emergence of situations such as blood and base friction tissue production hemorrhage to reduce the probability that complication and rejection appear.

Description

Fixing device for interventional medical instrument

Technical Field

The invention relates to the technical field of medical instruments, in particular to a fixing device of an interventional medical instrument.

Background

With the continuous progress of science and technology, percutaneous interventional techniques are widely applied in the field of disease treatment, and the percutaneous interventional techniques involve the human body through a catheter, and an interventional medical device (such as a vascular stent, a heart valve, a heart defect occluder, a vascular plug, a vascular filter and the like) or a medicine is placed at the focus position of the human body, so that the disease treatment is realized.

Some interventional medical devices need to be limited in their working position and posture in order to ensure an optimal working state, and therefore, in order to ensure the working position and posture of the interventional medical device, a fixing device needs to be provided outside the organ in order to provide good traction force for the interventional medical device. For example, when the diseased position of the mitral valve of the heart is treated, the valve support needs to be arranged at the diseased position of the mitral valve of the heart, in order to ensure that the valve support is not flushed into the atrium side by high-pressure blood and simultaneously ensure that the valve support does not fall off to the ventricle side, the position of the valve support needs to be fixed.

However, the fixing device in the prior art has large volume and complex structure, and is easy to cause complications and rejection reactions to patients; the diameter of the needle-type limiting part is very small (in order to effectively pass through the stay wire), and the stay wire limiting failure is easily caused after long-term use, so that the life safety of a patient is threatened; in addition, in the fixing process, the pull wire needs to be pierced by the needle-shaped limiting rod, and due to the small diameter of the pull wire, if the pull wire is not properly passed, the pull wire is easy to break, so that the life safety of a patient is threatened; moreover, because of the large volume, the contact area with the tissue must be large during fixation, and the base of the fixing device is a hard object and can tilt at the apex of the heart, thereby causing the conditions that the pull wire penetrates out of the position to leak blood, the base rubs the tissue to generate bleeding and the like.

Disclosure of Invention

The object of the present invention is to solve at least one of the problems of the prior art mentioned above, and the object is achieved by the following technical solutions:

the invention provides a fixing device of an interventional medical instrument, which comprises a fixing component and a gasket provided with a through hole, wherein the gasket is attached to the outer surface of an organ, the fixing component is detachably connected with the gasket, a stay wire channel is arranged inside the fixing component, a stay wire of the interventional medical instrument penetrates out of the organ and sequentially penetrates through the through hole and the stay wire channel, the length of the stay wire can be adjusted when the stay wire channel is opened, and the length of the stay wire is fixed when the stay wire channel is closed.

Compared with the prior art, the fixing device of the interventional medical instrument provided by the invention has the following beneficial effects:

1. the operation is simpler, can accomplish fixed and the adjustment to the acting as go-between fast.

2. The contact area of the stay wire is large, the fixation failure of the stay wire can be avoided, and the use safety of a patient is ensured.

3. The damage of the stay wire can be avoided, and the use safety of the patient is ensured.

4. The structure is small and exquisite, and is good with the laminating nature of internal organs, avoids the stay wire to wear out the emergence of the situation such as position blood leakage and base friction tissue production hemorrhage to reduce the probability that complication and rejection reaction appear.

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 invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic diagram of an embodiment of a fastening device for an interventional medical device;

FIG. 2 is a schematic structural view of a fixing device according to a first embodiment of the present invention (the stay wire is not fixed);

FIG. 3 is a cross-sectional view of the fixture shown in FIG. 2;

FIG. 4 is a schematic structural view of a fixing device according to a first embodiment of the present invention (stay wire fixing);

FIG. 5 is a cross-sectional view of the fixture shown in FIG. 4;

FIG. 6 is an exploded perspective view of the fastening device of FIG. 2;

FIG. 7 is a cross-sectional view of the fixture shown in FIG. 6;

FIG. 8 is a schematic structural view of a fixing device according to a second embodiment of the present invention (the stay wire is not fixed);

FIG. 9 is a cross-sectional view of the fixture of FIG. 8;

FIG. 10 is a cross-sectional view of a fixation device provided in a second embodiment of the invention (pull-wire fixation);

FIG. 11 is an exploded perspective view of the fastening device of FIG. 8;

FIG. 12 is a cross-sectional view of the fixture shown in FIG. 11;

FIG. 13 is a schematic structural view of a fixing device according to a third embodiment of the present invention (the pull wire is not fixed);

FIG. 14 is a cross-sectional view (section line not shown) of the fixture of FIG. 13;

FIG. 15 is a schematic structural view of a fixing device according to a third embodiment of the present invention (stay wire fixing);

FIG. 16 is a cross-sectional view (section line not shown) of the fixture shown in FIG. 15;

FIG. 17 is an exploded perspective view of the fixture shown in FIG. 13 (without the base plate);

FIG. 18 is an exploded perspective view of the fixture shown in FIG. 13 (including the base plate);

FIG. 19 is a schematic structural view of a fixing device according to a fourth embodiment of the present invention (the stay wire is not fixed);

FIG. 20 is a schematic structural view of the fixing assembly shown in FIG. 19;

FIG. 21 is a schematic structural view of a fixing device according to a fourth embodiment of the present invention (stay wire fixing);

FIG. 22 is a schematic structural view of the fixing assembly shown in FIG. 21;

FIG. 23 is an exploded perspective view of the fixation device shown in FIG. 19;

FIG. 24 is an exploded perspective view of the fixing assembly shown in FIG. 23;

fig. 25 is a schematic structural view of the operating instrument.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure 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 disclosure to those skilled in the art.

To more clearly describe the structure of the delivery system, the terms "distal" and "proximal" are defined herein as being conventional terms used in the field of interventional medical devices. Specifically, "distal" refers to the end of the procedure distal to the operator, and "proximal" refers to the end of the procedure proximal to the operator.

The inventive concept will be described by means of embodiments, but the invention is not limited to these embodiments and their concept.

The first embodiment:

referring to fig. 1 to 7 and 25, a fixing device of an interventional medical device according to a first embodiment of the present invention includes a fixing component 12 and a spacer 11 having a through hole 111, the spacer 11 is attached to an outer surface of an organ 3, the fixing component 12 is detachably connected to the spacer 11, a pull wire channel is disposed inside the fixing component 12, a pull wire 2 of the interventional medical device 5 penetrates through the organ 3 and sequentially passes through the through hole 111 and the pull wire channel, when the pull wire channel is opened, a length of the pull wire 2 can be adjusted, and when the pull wire channel is closed, a length of the pull wire 2 is fixed. Specifically, the gasket 11 is a sheet-shaped structure and has two breadths, the through hole 111 penetrates through the two breadths, one of the breadths is attached to the outer surface of the organ 3, the through hole 111 and the pull wire 2 are arranged in a centering manner from the penetrating position in the organ 3, the fixing component 12 is arranged on the other breadths, one end of the pull wire 2 is connected with the interventional medical device 5 through the connector 4, the other end of the pull wire 2 sequentially penetrates through the organ 3, the through hole 111 and the fixing component 12, when the pull wire 2 penetrates through the fixing component 12, an internal structure surface is arranged in the fixing component 12, a pull wire channel is formed through the internal structure surface, the internal structure surface has a movable end surface, the opening or closing of the pull wire channel is realized through the movement of the movable end surface, when the pull wire channel is in an opening state, the pull wire 2 can move in the pull wire channel, so as to realize the position adjustment of the interventional medical device 5, when the interventional medical device 5 reaches a designated position, the movable end face closes the stay wire channel, the stay wire 2 is extruded between the movable end face and the stay wire channel, and the movable end face and the stay wire channel provide strong friction force for the stay wire 2, so that the position limitation of the stay wire 2, namely the length limitation of the stay wire 2 is realized. Through set up portable terminal surface in the passageway of acting as go-between make when 2 fix act as go-between with the area of contact increase of acting as go-between 2 to effectively improved the fixed intensity of acting as go-between 2, avoided long-time use act as go-between 2 not hard up, the phenomenon that drops, and then guaranteed intervention formula medical instrument 5's position, guaranteed patient's treatment and safe in utilization.

It is further understood that the opening direction of the through hole 111 is the same as the axial direction of the gasket 11, the through hole 111 is opened at the central position of the gasket 11, the diameter of the through hole 111 is larger than the diameter of the stay wire 2, when the stay wire 2 is fixed, the gasket 11 is attached to the outer surface of the visceral organ 3, the stay wire 2 is positioned in the through hole 111, the gasket 11 and the visceral organ 3 wriggle or beat synchronous motion, the structure can effectively avoid the surface separation of the gasket 11 and the visceral organ 3 in the use process, and the edge warping phenomenon is avoided.

Further, the surface that gasket 11 and internal organs 3 contact is interior concave surface, the shape of interior concave surface and the shape looks adaptation of the surface of internal organs 3, because the surface of internal organs 3 generally is the arcwall face, set up the terminal surface that gasket 11 and internal organs 3 contact into interior concave surface, when fixing device 1 fixes intervention formula medical instrument 5, this interior concave surface is towards internal organs 3's surface, after fixed the completion, interior concave surface can effectively laminate with internal organs 3's surface, thereby the laminating nature between them has been improved, effectively avoided because internal organs 3 wriggle or the limit phenomenon of sticking up of gasket 11 that beats and arouses, and then effectively sealed the position of wearing out internal organs 3 with 2 acting as go-between, avoid appearing leaking blood and gasket 11 and internal organs 3's surface and appear the phenomenon of friction, the condition of complication and internal organs surface bleeding has been reduced.

It should be understood that the shape of the concave surface can be adapted to the shape of the outer surface of the organ 3, and the fitting area between the spacer 11 and the outer surface of the organ 3 can be effectively increased by this structure, thereby ensuring the use effect.

Further, the surface (the end surface facing away from the visceral organ 3) of the gasket 11 away from the visceral organ 3 is a convex arc surface, and other visceral organs or tissues exist around the visceral organ 3, and because the visceral organs or tissues may be in a peristaltic or pulsating state and are in contact with each other, by arranging the convex arc surface, the gasket 11 can be effectively prevented from scratching or influencing other visceral organs or tissues, so that the use safety of a patient is ensured.

It should be noted that the edge of the convex arc surface is passivated, that is, the transition between the convex arc surface and the end surface of the spacer 11 contacting the visceral organ 3 is rounded, so that the risk that the spacer 11 scratches other visceral organs or tissues can be effectively reduced, and the safety of the patient in use can be further ensured.

Further, the material of gasket 11 is felt cloth, any one in silica gel and flexible macromolecular material, because internal organs 3 are flexible tissue, the material of gasket 11 is through using felt cloth, any one in silica gel and the flexible macromolecular material, can improve the intensity of gasket 11 and the contact of internal organs 3, avoid appearing the condition emergence that the gasket 11 offset or stick up the blood leakage that the limit leads to or the surface of internal organs 3 is ground, and simultaneously, can effectively improve the biocompatibility of gasket 11 and internal organs 3, thereby reduce the probability that the rejection reaction appears, and then improve the security that the patient used.

It should be understood that the above-mentioned flexible polymer material refers to natural or synthetic material, and has good flexibility and biocompatibility, and in addition, is non-toxic and harmless and can be used for human intervention treatment, and herein, this application is not listed.

Specifically, one side that through-hole 111 kept away from internal organs 3 is formed with holding tank 1111, has seted up draw-in groove 11111 on the lateral wall of holding tank 1111, and fixed subassembly 12 installs in holding tank 1111 to, be located the snap ring joint of the surface of fixed subassembly 12 in draw-in groove 11111. Through-hole 111 is the step hole structure, and the diameter that is close to internal organs 3's surface one side is less than the diameter of keeping away from internal organs 3's surface one side, and wherein, the main aspects of through-hole 111 is holding tank 1111, and draw-in groove 11111 circumference is seted up on the lateral wall of main aspects, and the diameter of draw-in groove 11111 is greater than the diameter of holding tank 1111. The surface of fixed subassembly 12 is provided with the snap ring, and when fixed subassembly 12 was installed, will fixed subassembly 12 install in holding tank 1111 to the snap ring setting that will fix subassembly 12 surface is in draw-in groove 11111, and is spacing to the snap ring through draw-in groove 11111, thereby realizes the installation and the fixed of fixed subassembly 12. Above-mentioned simple structure can effectively reduce the cost of manufacturing, and simultaneously, the joint strength between fixed subassembly 12 and the gasket 11 is high, can effectively guarantee the stability in the use.

It should be understood that above-mentioned gasket 11 is flexible structure, and when the fixed subassembly 12 of installation, through external force make holding tank 1111 on the gasket 11 take place elastic deformation to make the diameter increase of holding tank 1111, install fixed subassembly 12 again in holding tank 1111, remove external force, gasket 11 resumes elastic deformation, and the diameter of holding tank 1111 resets, thereby realizes the fast assembly between fixed subassembly 12 and the gasket 11.

It should be noted that the number of the card slots 11111 may be plural, and each card slot 11111 is arranged at intervals along the height direction of the receiving slot 1111, but the number of the card slots 11111 needs to be set according to the height of the fixing component 12. Fixed mode between fixed subassembly 12 and the gasket 11 is realized through the elastic deformation of gasket 11, because fixed subassembly 12 is connected with intervention formula medical instrument 5 through 2 acting as go-between, long-time the use, elastic deformation takes place for gasket 11, thereby cause fixed subassembly 12 not hard up, influence fixed effect, this embodiment preferred scheme is for setting up two draw-in grooves 11111, through setting up two draw-in grooves 11111, can further improve the joint strength between fixed subassembly 12 and the gasket 11, effectively avoid the not hard up phenomenon that fixed subassembly 12 appears of long-time use, thereby effectively improve the fixed strength of fixed subassembly 12, and then guarantee the security that the patient used.

Specifically, the fixing assembly 12 includes a first fixing seat 1202 and a countersunk screw 1201, the first fixing seat 1202 is provided with a countersunk hole 12021 communicated with the through hole 111, the countersunk screw 1201 is provided with a first via 12012 and a connecting hole 12013 communicated with each other, the first via 12012 and the countersunk screw 1201 are coaxially arranged, one end of the connecting hole 12013 is communicated with the first via 12012, the other end of the connecting hole 12013 is communicated with a corner of the outer side surface of the countersunk screw 1201, and the countersunk hole 12021, the first via 12012 and the connecting hole 12013 form a wire passage; one end (i.e., the proximal end) of the pull wire 2 far away from the interventional medical device 5 penetrates through the through hole 111, the countersunk hole 12021, the first through hole 12012 and the connecting hole 12013, and when the countersunk head screw 1201 is screwed tightly relative to the countersunk hole 12021, the pull wire 2 is limited between the countersunk surface of the countersunk head screw 1201 and the countersunk surface of the countersunk hole 12021.

More specifically, the countersunk hole 12021 formed in the first fixing seat 1202 has two sections, one of the two sections is a cylindrical section, the other end is a frustum section, a small end of the frustum section is coaxially connected with the cylindrical section, the cylindrical section is communicated with the through hole 111, a thread is formed on a side wall of the cylindrical section, an outer contour of the countersunk screw 1201 is matched with an inner contour of the countersunk hole 12021, an outer thread is formed on an outer surface of the cylindrical section of the countersunk screw 1201, the first through hole 12012 is located at a central position of the countersunk screw 1201, one end of the connecting hole 12013 is communicated with the first through hole 12012, the other end is communicated with an outer surface of the countersunk screw 1201, and a communication position of the connecting hole 12013 and the outer surface of the countersunk screw 1201 is located at a corner of the outer surface of the countersunk screw 1201, and the corner is a connection position of the cylindrical section of the countersunk screw 1201 and the frustum section of the countersunk screw. In the using process, the pull wire 2 sequentially penetrates through the through hole 111, the lower part of the countersunk hole 12021, the first through hole 12012 and the connecting hole 12013, and then penetrates out through the upper part of the countersunk hole 12021, that is, the pull wire 2 passing through the through hole 111 needs to pass through the countersunk screw 1201 in the countersunk hole 12021, in the fixing component 12, the lower part (the side close to the through hole 111) of the countersunk hole 12021, the first through hole 12012, the connecting hole 12013 and the upper part (the side far away from the through hole 111) of the countersunk hole 12021 form a pull wire channel, when the position of the pull wire needs to be adjusted, the countersunk screw 1201 is in threaded fit with the countersunk hole 12021, a gap exists between the countersunk surface (inclined surface) of the countersunk screw 1201 and the countersunk surface (inclined surface) of the countersunk hole 12021, the connecting hole 12013 is located on the outer surface of the countersunk screw and is communicated with the gap, at this time, the pull wire 2 is not limited, and the length adjustment can be performed, so as to adjust the position of the intervening medical apparatus 5, after the position is adjusted, the countersunk head screw 1201 is screwed, at this time, the countersunk surface of the countersunk head screw 1201 is attached to the countersunk surface of the countersunk hole 12021, the orifice of the connecting hole 12013 on the outer surface of the countersunk head screw 1201 is positioned in the cylindrical section (the part provided with the thread) of the countersunk hole 12021, and due to the screwing and extrusion of the countersunk head screw 1201, a part of the body of the pull wire 2 is respectively clamped between the orifice of the connecting hole 12013 on the outer surface of the countersunk head screw 1201 and the thread of the countersunk hole 12021 and between the countersunk surface of the countersunk head screw 1201 and the countersunk surface of the countersunk hole 12021. When the length of the stay wire needs to be adjusted again, the countersunk head screw 1201 is unscrewed, so that the connecting hole 12013 is positioned in a gap formed between the orifice on the outer surface of the countersunk head screw 1201 and the countersunk surface of the countersunk head hole 12021, the limit of the stay wire 2 is relieved, the length can be adjusted, and the stay wire 2 can be fixed again by locking the countersunk head screw 1201 after the adjustment is finished.

Above-mentioned fixing device 1's volume is less, the structure is simpler, and simultaneously, the operation is simpler, can accomplish fixed and the adjustment to act as go-between 2 fast, furthermore, fixed subassembly 12 is when 2 spacing to act as go-between, area of contact with 2 that acts as go-between is great, avoid 2 impaired and 2 fixed inefficacy of acting as go-between, guarantee patient's safety in utilization, in addition, fixing device 1's structure is small and exquisite, good with the laminating nature of internal organs, avoid 2 that act as go-between to wear out the position and leak the emergence of situations such as blood and base friction tissue production hemorrhage, thereby reduce the probability that complication and rejection reaction appear.

It should be noted that the connecting hole 12013 is obliquely arranged relative to the first via hole 12012, and the orifice of the connecting hole 12013 on the outer surface of the countersunk head screw 1201 is higher than the orifice of the connecting hole 12013 communicated with the first via hole 12012.

Specifically, counter bore 12021 and through-hole 111 set up coaxially, because first via hole 12012 sets up coaxially with counter screw 1201, consequently, when counter screw 1201 and counter bore 12021 cooperate, through-hole 111, counter bore 12021 and first via hole 12012 all set up coaxially, when acting as go-between 2 is fixed, gasket 11 and the surperficial laminating of internal organs 3, act as go-between 2 is in through-hole 111, counter bore 12021 and first via hole 12012, gasket 11 and the wriggling or the beat synchronous motion of internal organs 3, this structure atress is even, can effectively avoid among the use gasket 11 and the internal organs surface separation, avoid appearing warping the limit phenomenon.

Specifically, a first groove 12011 is formed in an end surface of the countersunk head screw 1201, which is away from the through hole 111, and the operating instrument 6 can be matched with the first groove 12011, so that the countersunk head screw 1201 can be screwed or unscrewed relative to the countersunk hole 12021. When the length of 2 or the fixed length of acting as go-between of needs adjustment, insert first recess 12011 with the work end of operating device 6, make countersunk screw 1201 loosen or screw through rotating, this kind of simple structure, low in manufacturing cost, simultaneously, the simple operation can effectively shorten the operation time, reduces patient's pain.

It should be understood that the end surface of the countersunk head screw 1201 provided with the first groove 12011 is the top surface of the countersunk head screw 1201 (the end surface away from the through hole 111), when the countersunk head screw 1201 is screwed, the top surface of the countersunk head screw 1201 is lower than the orifice of the countersunk head hole 12021, that is, when the countersunk head screw 1201 limits the pull wire 2, the countersunk head screw 1201 has the end surface of the first groove 12011 recessed below the surface of the convex arc surface of the gasket 11, and by means of the structure, the influence of the countersunk head screw 1201 on other organs and tissues can be effectively avoided, and the use safety of a patient is improved.

It should be noted that, the working end of the operating instrument 6 has a shape matched with the shape of the notch of the first groove 12011, and when the countersunk head screw 1201 is operated, the working end of the operating instrument 6 is inserted into the first groove 12011, so that the countersunk head screw 1201 is effectively operated, and the effective implementation of the adjustment of the length of the pull wire and the fixation of the length of the pull wire is ensured.

Meanwhile, the preferred embodiment of the above-mentioned operating device 6 is a handle, the handle includes an operating handle 61, a connecting arm 62 and a working head 63, wherein the connecting arm 62 is made of plastic material, one end of the connecting arm 62 is connected with the operating handle 61, the other end of the connecting arm 62 is connected with the working head 63, a protruding block 632 matched with the first groove 12011 is arranged at the front end (working end) of the working head 63, when the countersunk head screw 1201 needs to be screwed or unscrewed, the operating handle 61 is driven, so that the protruding block 632 is inserted into the first groove 12011, thereby implementing the operation of the countersunk head screw 1201, in addition, a wire drawing hole 631 is arranged in the working head 63, one opening of the wire drawing hole 631 is arranged at the end surface of the protruding block 632 facing the first groove 12011, the other opening of the wire drawing hole 631 is arranged on the outer wall of the working head 63, that is, when the wire drawing 2 is operated, need will act as go-between 2 and pass and draw line hole 631, penetrate from the drill way that is located the lug 632 terminal surface promptly, wear out from the drill way that is located the outer wall, through this kind of structure, can realize adjusting the in-process of acting as go-between 2, avoid intervention formula medical instrument 5 to drive the condition emergence of acting as go-between 2 and droing from fixing device 1 because reasons such as 3 inside blood pressure of internal organs, avoid the emergence of medical accident, improve the security that the patient used.

Second embodiment:

referring to fig. 1, 8 to 12 and 25, a fixing device for an interventional medical device according to a second embodiment of the present invention includes a spacer 11 having a through hole 111 and a fixing component 12, the spacer 11 is attached to an outer surface of the organ 3, the fixing component 12 is detachably connected to the spacer 11, a pull wire channel is disposed inside the fixing component 12, the pull wire 2 for pulling the interventional medical device 5 passes through the inside of the organ 3 and sequentially passes through the through hole 111 and the pull wire channel, and when the pull wire channel is opened or closed, the length of the pull wire 2 is adjustable or fixed.

Differences between the second embodiment and the first embodiment will be described below, and descriptions of parts of the second embodiment that are the same as or similar to the first embodiment will not be repeated here.

Specifically, the fixing assembly 12 includes a second fixing seat 1212 and a fixing screw 1211, the second fixing seat 1212 is provided with a tapered hole 12121 communicating with the through hole 111, the fixing screw 1211 is provided with a threading hole 12113, the threading hole 12113 and the fixing screw 1211 are coaxially arranged, one end of the fixing screw 1211 facing the through hole 111 is a tapered end, the tapered end is circumferentially provided with a plurality of expansion joints 12112 at intervals, each expansion joint 12112 is respectively communicated with the threading hole 12113, and the tapered hole 12121 and the threading hole 12113 form a threading channel; one end of the pull wire 2, which is far away from the interventional medical device 5, penetrates out through the through hole 111, the tapered hole 12121 and the threading hole 12113, and when the fixing screw 1211 is screwed tightly relative to the tapered hole 12121, the gap of each expansion joint 12112 is reduced, so that the pull wire 2 is limited at the port of the threading hole 12113 facing the through hole 111.

More specifically, the tapered hole 12121 is coaxially disposed on the second fixing seat 1212, the tapered hole 12121 includes a straight section and a tapered section, a large end of the tapered section is connected to the straight section, a small end of the tapered section is communicated with the through hole 111, and the diameters of the two are equal, a thread is disposed on an inner wall of the straight section of the tapered hole 12121, the fixing screw 1211 includes a straight end and a tapered end, a thread is disposed on an outer surface of the straight end, the fixing screw 1211 is in threaded engagement with the tapered hole 12121 to connect the two, the threading hole 12113 is located at a central position of the fixing screw 1211, one end of the threading hole 12113 faces the through hole 111, the other end faces outward, the plurality of slots 12112 disposed at the tapered end are communicated with the threading hole 12113, that is, the tapered end is divided into a plurality of portions by the plurality of slots 12112, and the diameter of the end face of the telescoping end facing the through hole 111 is greater than the minimum diameter of the tapered section of the tapered hole 12121. When the length of the stay wire 2 needs to be fixed, when the fixing screw 1211 is continuously screwed relative to the conical hole 12121, each divided part of the conical end is elastically deformed under the extrusion of the inner wall of the conical section, and is close to the direction close to the center (the radial direction of the threading hole 12113), the gap between each expansion joint 12112 is reduced, the diameter of the orifice of the threading hole 12113 at the conical end is reduced, and as the stay wire 2 passes through the inside of the threading hole 12113, the stay wire 2 in the threading hole 12113 is extruded and limited at the orifice of the threading hole 12113 at the conical end along with the continuous screwing of the fixing screw 1211, so that the effective limitation of the stay wire 2 is realized; when the length of the stay wire 2 needs to be adjusted, the fixing screw 1211 is unscrewed relative to the tapered hole 12121, the pressure of the inner wall of the tapered section on each divided part of the tapered end is reduced, the elastic deformation is recovered, each divided part of the tapered end moves towards the direction far away from the center, the diameter of the orifice of the stay wire hole 12113 at the tapered end is recovered to the original size, the limit on the stay wire 2 is released at the moment, the adjustment on the stay wire length can be realized, and after the adjustment is finished, the stay wire length fixing step is repeated.

It should be understood that the fixing screw 1211 is made of a material that can elastically deform and is non-toxic and harmless, and may be made of metal or nonmetal, and the description of the material is not repeated herein.

It should be noted that the length direction of each of the expansion joints 12112 is consistent with the length direction of the fixing screw 1211, and each of the expansion joints 12112 is disposed at equal intervals along the circumference of the tapered end of the fixing screw 1211, and on the basis of ensuring the fixing strength and stability of the stay wire 2, the number of the expansion joints 12112 is specifically set according to the material of the fixing screw 1211 and the diameter of the tapered end, which is not described herein again.

Specifically, the tapered hole 12121 and the through hole 111 are coaxially arranged, and the threading hole 12113 and the fixing screw 1211 are coaxially arranged, so that when the fixing screw 1211 is matched with the threading hole 12113, the through hole 111, the tapered hole 12121 and the threading hole 12113 are coaxially arranged, when the pull wire 2 is fixed, the gasket 11 is attached to the surface of the organ 3, the pull wire 2 is positioned in the through hole 111, the tapered hole 12121 and the threading hole 12113, and the gasket 11 and the organ 3 move synchronously in a creeping or beating mode.

Specifically, a second groove 12111 is formed on an end surface of the fixing screw 1211 facing away from the through hole 111, and the operating device 6 is engaged with the second groove 12111 to tighten or loosen the fixing screw 1211 relative to the tapered hole 12121. When the length of 2 or the fixed length of acting as go-between needs adjustment, insert second recess 12111 with the work end of operating device 6, make countersunk screw 1201 unscrew or screw through rotating, this kind of simple structure, low in manufacturing cost, simultaneously, the simple operation can effectively shorten the operation time, reduces patient's pain.

It should be understood that the end surface of the fixing screw 1211, on which the second groove 12111 is formed, is the top surface of the fixing screw 1211 (the end surface away from the through hole 111), and when the fixing screw 1211 is screwed, the top surface of the fixing screw 1211 is lower than the opening of the tapered hole 12121, that is, when the fixing screw 1211 limits the pull wire 2, the end surface of the fixing screw 1211, having the second groove 12111, is recessed below the surface of the convex arc surface of the gasket 11, so that the influence of the fixing screw 1211 on other organs or tissues can be effectively avoided, and the safety of the patient can be improved.

It should be noted that, the notch of the second groove 12111 is shaped like a regular polygon or other irregular structure, the working end of the operation device 6 has a shape adapted to the notch of the second groove 12111, and when the fixing screw 1211 is operated, the working end of the operation device 6 is inserted into the second groove 12111, so as to achieve effective operation of the fixing screw 1211, and further ensure effective implementation of the length adjustment and length fixation of the pull wire.

The operating device 6 in this embodiment is similar to that in the first embodiment, and will not be described again.

The third embodiment:

referring to fig. 1, 13 to 18 and 25, a fixing device of an interventional medical device according to a third embodiment of the present invention includes a spacer 11 having a through hole 111 and a fixing component 12, the spacer 11 is attached to an outer surface of an organ 3, the fixing component 12 is detachably connected to the spacer 11, a pull wire channel is disposed inside the fixing component 12, a pull wire 2 of the interventional medical device 5 passes through the inside of the organ 3 and sequentially passes through the through hole 111 and the pull wire channel, and when the pull wire channel is opened or closed, a length of the pull wire 2 is adjustable or fixed.

Differences between the third embodiment and the first embodiment will be described below, and descriptions of parts of the third embodiment that are the same as or similar to the first embodiment will not be repeated here.

Specifically, a first mounting groove is formed in the inner wall of the through hole 111, the fixing component 12 is mounted in the first mounting groove, the first mounting groove is vertically communicated with a first operation channel 1122, two ports of the first operation channel 1122 are respectively formed in the convex arc surface, the through hole 111 above the first mounting groove is a first waist hole 1121, and the length direction of the first waist hole 1121 is consistent with the length direction of the first operation channel 1122.

More specifically, a first mounting groove is provided coaxially with the through-hole 111, the first mounting groove being located at a position in the height direction of the through-hole 111, the first mounting groove dividing the through-hole 111 into two parts, wherein, the near end (the through hole 111 above the first mounting groove) can be in a waist hole shape, the far end (the through hole 111 below the first mounting groove) is a round hole, the length direction of the first operating channel 1122 is vertical to the length direction of the through hole 111, the first operating channel 1122 enters through one side of the convex arc surface, passes through the gasket 11 in the radial direction and then passes out through the other side of the convex arc surface, meanwhile, the first operation channel 1122 is communicated with the first installation groove, a cross section of the first operation channel 1122 along the width direction thereof is rectangular, the width of the first operation channel 1122 is smaller than the diameter of the first installation groove, and the length direction of the first operation channel 1122 is consistent with the length direction of the first waist hole 1121. When fixed subassembly 12 installs, make gasket 11 take place elastic deformation through external force, at this moment, the width of first operation passageway 1122 and the diameter increase of first mounting groove, insert fixed subassembly 12 in first mounting groove through the one end of first operation passageway 1122, remove external force, gasket 11 resumes elastic deformation, first mounting groove parcel is at the surface of fixed subassembly 12, thereby realize the fixed of fixed subassembly 12, and simultaneously, the operation end setting of fixed subassembly 12 is in the position of first operation passageway 1122, in the first waist hole 1121 that the locking end setting of fixed subassembly 12 was held. Above-mentioned simple structure can effectively reduce the cost of manufacturing, simultaneously, can realize the fast assembly between fixed subassembly 12 and the gasket 11, improves the efficiency of installation, and in addition, the joint strength between fixed subassembly 12 and the gasket 11 is high, can effectively guarantee the stability in the use.

It should be pointed out that, the surface of above-mentioned fixed subassembly 12 is cylinder type structure, the shape of first mounting groove and the outer surface shape looks adaptation of fixed subassembly 12, and simultaneously, the diameter of first mounting groove slightly is less than the diameter of the surface of fixed subassembly 12, when can making fixed subassembly 12 install in first mounting groove through this structure, first mounting groove can realize fixedly to fixed subassembly 12, thereby improve the fixed strength of fixed subassembly 12, and then guarantee to act as go-between 2 spacing stability, the security that the improvement patient used.

Specifically, the fixing assembly 12 includes a first base 1223 provided with a first slot 12231 and a first bolt 1224 provided with a locking screw 1222, the first base 1223 is clamped in the first mounting groove, the first slot 12231 is communicated with the through hole 111, an insertion port of the first slot 12231 is communicated with the first operating channel 1122, a length direction of the first slot 12231 is consistent with a length direction of the first operating channel 1122, the first bolt 1224 is movably disposed in the first slot 12231, and a cable passage is formed between the first slot 12231 and the first bolt 1224; one end of the pull wire 2, which is far away from the interventional medical device 5, sequentially penetrates through the through hole 111 located below the first slot 12231, the first slot 12231 and the through hole 111 located above the first slot 12231, the free end of the first bolt 1224 abuts against the bottom surface of the first slot 12231, the locking screw 1222 is screwed, the locking screw 1222 protrudes out of the surface of the first bolt 1224, and the pull wire 2 is limited between the free end of the first bolt 1224 and the bottom surface of the first slot 12231.

More specifically, the first base 1223 is installed in the first installation groove, an entrance of the first slot 12231 communicates with one side of the first operation channel 1122, a length direction of the first slot 12231 coincides with a length direction of the first operation channel 1122, the first pin 1224 is movable relative to the first slot 12231 by operating an operation end of the first pin 1224 in the first operation channel 1122, meanwhile, the first pin 1224 is provided with a threaded hole which penetrates through a body of the first pin 1224 and is perpendicular to the movement direction of the first pin 1224 relative to the first slot 12231, when the first pin 1224 is inserted into the first slot 12231, the locking screw 1222 is located in the first waist hole 1121, the length of the first waist hole 1121 is smaller than the stroke of the first pin 1224 in the first slot 12231, when a free end of the first pin 1224 abuts against a bottom surface of the first slot 12231, the locking screw 1222 abuts against a side wall of one end of the first waist hole 1121, when the distance between the free end of the first plug 1224 and the bottom surface of the first slot 12231 is the largest (the first plug 1224 is not separated from the first slot 12231), the locking screw 1222 abuts against the side wall of the other end of the first waist hole 1121, and the working stroke of the first plug 1224 can be effectively controlled by the locking screw 1222, so that the use accuracy is improved.

When the pull-cord 2 is used, the pull-cord 2 sequentially passes through the lower part of the through-hole 111, the first slot 12231 and the upper part of the through-hole 111, and when the length of the pull-cord 2 needs to be adjusted, the free end of the first bolt 1224 is separated from the bottom surface of the first slot 12231; when the wire 2 needs to be fixed, the first bolt 1224 is driven along the operation channel to move towards the bottom surface of the first slot 12231, so that the free end of the first bolt 1224 abuts against the bottom surface of the first slot 12231, at this time, the wire 2 is pressed between the end surface of the free end of the first bolt 1224 and the bottom end surface of the first slot 12231, at this time, the threaded hole enters the through hole 111 towards the port of the through hole 111, the locking screw 1222 is driven to rotate by the operation instrument 6, as the length of the locking screw 1222 is greater than that of the threaded hole, the free end of the locking screw 1222 protrudes out of the surface of the first bolt 1224 and enters the through hole 111 as the tightening is continued, as a part of the body of the locking screw 1222 enters the through hole 111, the outer surface of the part of the body abuts against the inner wall of the through hole 111, at this time, the position of the first bolt 1224 relative to the first slot 12231 is limited, thereby realizing the limit of the stay wire 2. When the length of the pulling wire 2 needs to be adjusted, the locking screw 1222 is driven to be unscrewed by the operating device 6, when the free end of the locking screw 1222 enters the interior of the first bolt 1224 from the through hole 111, the free end of the first bolt 1224 separates from the bottom surface of the first slot 12231, so that the adjustment of the pulling wire 2 is realized, and after the adjustment of the pulling wire 2 is finished, the locking process is repeated, so that the fixing of the pulling wire 2 is realized again.

It should be noted that the bottom surface of the first slot 12231 is a convex structure, the highest point of the convex structure is provided with a first limiting groove, the first limiting groove is perpendicular to the length direction of the first slot 12231, the free end of the first bolt 1224 is a concave structure, the concave structure is adapted to the convex structure, the lowest point of the concave structure is provided with a second limiting groove, the second limiting groove is perpendicular to the length direction of the first bolt 1224, when the pull wire 2 needs to be fixed, the free end of the first bolt 1224 abuts against the bottom surface of the first slot 12231, at this time, the concave structure is attached to the convex structure, the first limiting groove and the second limiting groove form a complete limiting hole, the diameter of the limiting hole is smaller than that of the pull wire 2, at this time, the pull wire 2 is clamped in the limiting hole, the pull wire 2 is pressed and limited by the inner wall of the first limiting groove and the inner wall of the second limiting groove, thereby realizing the effective fixation of the stay wire 2 and having good stability and strength.

Meanwhile, a third groove is formed in the top surface (the end surface far away from the first bolt 1224) of the locking screw 1222, the operating instrument 6 is matched with the third groove to enable the locking screw 1222 to be screwed or unscrewed relative to the threaded hole, the structure is simple, the manufacturing cost is low, the operation is convenient and fast, the operation time can be effectively shortened, the pain of a patient is reduced, the end surface of the locking screw 1222, where the third groove is formed, is always lower than the hole opening of the first waist hole 1121, namely, the locking screw 1222 is always located inside the first waist hole 1121, the influence of the locking screw 1222 on other tissues can be effectively avoided through the structure, and the use safety of the patient is improved.

The notch shape of the third groove is regular polygon or other special-shaped structures, the working end of the operating instrument 6 is in a shape matched with the notch shape of the third groove, and when the locking screw 1222 is operated, the working end of the operating instrument 6 is inserted into the third groove, so that the locking screw 1222 can be effectively operated, and the effective implementation of the stay wire length adjustment and the length fixation is guaranteed.

Specifically, the entrance of the first slot 12231 is a retraction structure 12241, two side walls of the first plug 1224 are concave structures, the retraction structure 12241 is correspondingly disposed in the concave structure, the length of the concave structure is equal to the working stroke of the first plug 1224, the retraction structure 12241 is located at the entrance of the first slot 12231 and is formed by two stoppers having the same shape and size, that is, the two stoppers are disposed at the entrance of the first slot 12231 and spaced apart from each other, the spacing distance between the stoppers is smaller than the width of the first slot 12231, two side walls of the first plug 1224 (the first slot 12231 faces the two side walls of the first slot 12231) are formed with concave structures, that is, a first rectangular notch is formed on one side wall of the first plug 1224, a second rectangular notch is formed on the other side wall of the first plug 1224, and the shape and size of the first rectangular notch are the same as those of the second rectangular notch, the first rectangular notch corresponds to the second rectangular notch in position, the length direction of the first rectangular notch is consistent with that of the second rectangular notch in length direction of the first bolt 1224, the distance between the bottom end face of the first rectangular notch and the bottom end face of the second rectangular notch is slightly smaller than the spacing distance between the two stop blocks, when the first bolt 1224 and the first slot 12231 are assembled, one of the stop blocks is arranged in the first rectangular notch, the other stop block is arranged in the second rectangular notch, and when the first bolt 1224 moves relative to the first slot 12231, the two stop blocks slide relative to the first rectangular notch and the second rectangular notch respectively.

Through the structure, the first bolt 1224 can be guaranteed to move relative to the first slot 12231, meanwhile, the first bolt 1224 can be effectively limited, the situation that the first bolt 1224 falls off to influence the health of a patient is avoided, and therefore the use safety of the patient is guaranteed.

In a preferred embodiment, the fixing assembly 12 further includes a first top plate 1221, the first top plate 1221 is provided with a second waist hole 12211, the second waist hole 12211 is identical to the first waist hole 1121 in shape and size, the first top plate 1221 is detachably connected to the top surface of the first base 1223, the second waist hole 12211 is disposed corresponding to the first waist hole 1121, and the locking screw 1222 is movably disposed in the second waist hole 12211. During the installation, set up first roof 1221 on the top surface of first base 1223 (keeping away from the terminal surface of one side of through-hole 111) with detachable mode for the hole site of second waist hole 12211 corresponds with the hole site of first waist hole 1121, can realize spacing in vertical direction (with first bolt 1224 moving direction looks vertically direction) to first bolt 1224 through this structure, thereby effectively avoid first bolt 1224 not hard up to influence the fixed effect of 2 that acts as go-between, and then guarantee the safety that the patient used.

It should be pointed out that, the first slot 12231 communicates with the through-hole 111 through the first transition hole 12232, the first transition hole 12232 is seted up on the side of first slot 12231, this side is parallel with the bottom surface of the first operation passageway 1122, the first transition hole 12232 is coaxial with the through-hole 111, and the diameters of the two are the same, can further realize spacing first bolt 1224 in the vertical direction through this kind of structure, make first bolt 1224 can be effectively restricted in first slot 12231, thereby guarantee the stability of first bolt 1224, and then improve the fixed strength of acting as go-between 2, guarantee patient's safety in utilization.

In another preferred embodiment, the fixing member 12 includes not only the first top plate 1221 but also a bottom plate 1225, the bottom plate 1225 is provided with a guiding hole 12251, the bottom plate 1225 is detachably connected to the bottom surface of the first base 1223, the guiding hole 12251 allows the through hole 111 to communicate with the first slot 12231, and when the wire 2 is stopped, the free end of the locking screw 1222 is inserted into the guiding hole 12251. Bottom plate 1225 is connected with the bottom surface (towards the terminal surface of through-hole 111) of first base 1223 with detachable mode, guiding hole 12251 and the coaxial setting of through-hole 111, and the diameter of both is the same, be connected first roof 1221 and bottom plate 1225 with first base 1223 respectively, first roof 1221 and bottom plate 1225 carry on spacingly to the vertical direction of first bolt 1224 jointly, make first bolt 1224 can effectively be restricted in first slot 12231, thereby guarantee the stability of first bolt 1224, and then improve the fixed strength who acts as go-between 2, guarantee patient's safety in utilization.

The fourth embodiment:

referring to fig. 1, 19 to 24, a fixing device of an interventional medical device according to a fourth embodiment of the present invention includes a spacer 11 having a through hole 111, and a fixing component 12, wherein the spacer 11 is attached to an outer surface of the organ 3, the fixing component 12 is detachably connected to the spacer 11, a pull wire channel is disposed inside the fixing component 12, and is used for pulling a pull wire 2 of the interventional medical device 5 to pass through the inside of the organ 3 and pass through the through hole 111 and the pull wire channel in sequence, and when the pull wire channel is opened or closed, the length of the pull wire 2 is adjustable or fixed.

Differences between the fourth embodiment and the first embodiment will be described below, and descriptions of parts of the fourth embodiment that are the same as or similar to the first embodiment will not be repeated here.

Specifically, the second mounting groove has been seted up on the inner wall of through-hole 111, and fixed subassembly 12 is installed in the second mounting groove, and the perpendicular intercommunication of second mounting groove has second operation passageway 1131, and two ports of second operation passageway 1131 are seted up respectively on the convex arc face, have seted up first slot 1132 on the convex arc face, and first slot 1132 communicates with the second mounting groove.

More specifically, the second installation groove is disposed coaxially with the through hole 111, the second installation groove is located at a certain position in the height direction of the through hole 111, the second installation groove divides the through hole 111 into two parts, i.e., an upper part (a side away from the outer surface of the organ 3) and a lower part (a side close to the outer surface of the organ 3), the first long hole 1132 is located above the second installation groove, the depth direction of the first long hole 1132 is consistent with the length direction of the through hole 111, the length direction of the second operation channel 1131 is perpendicular to the length direction of the through hole 111, the second operation channel 1131 enters through one side of the convex arc surface, penetrates through the gasket 11 in the radial direction and then penetrates out through the other side of the convex arc surface, meanwhile, the second operation channel 1131 is communicated with the second installation groove, the longitudinal section of the second operation channel 1131 is rectangular, and the width of the second operation channel 1131 is smaller than the diameter of the second installation groove. When fixed subassembly 12 installs, make gasket 11 take place elastic deformation through external force, at this moment, the width of second operation passageway 1131 and the diameter increase of second mounting groove, insert fixed subassembly 12 in the second mounting groove through the one end of second operation passageway 1131, remove external force, gasket 11 resumes elastic deformation, the surface at fixed subassembly 12 is wrapped up in to the second mounting groove, thereby realize fixed subassembly 12's fixed, and simultaneously, the operation end setting of fixed subassembly 12 is in the position of second operation passageway 1131, in the first slot 1132 that the locking end that will fixed subassembly 12 set up. Above-mentioned simple structure can effectively reduce the cost of manufacturing, simultaneously, can realize the fast assembly between fixed subassembly 12 and the gasket 11, improves the efficiency of installation, and in addition, the joint strength between fixed subassembly 12 and the gasket 11 is high, can effectively guarantee the stability in the use.

It should be pointed out that, the surface of above-mentioned fixed subassembly 12 is cylinder type structure, the shape of second mounting groove and the outer surface shape looks adaptation of fixed subassembly 12, and simultaneously, the diameter of second mounting groove slightly is less than the diameter of the surface of fixed subassembly 12, when can making fixed subassembly 12 install in the second mounting groove through this structure, the second mounting groove can be fixed subassembly 12 realization, thereby improve the fixed strength of fixed subassembly 12, and then guarantee to act as go-between 2 spacing stability, the security that the improvement patient used.

Specifically, the fixing assembly 12 includes a second base 1233, a second pin 1232 having a limiting block 12321, a wrench 1235 and a spring 1234, the second base 1233 is provided with a second slot 12331 and an elongated slot 12332 which are communicated with each other, the width of the limiting block 12321 is greater than the width of a communication position between the second slot 12331 and the elongated slot 12332, the second pin 1232 is movably disposed in the second slot 12331, a free end of the second pin 1232 extends toward the elongated slot 12332, so that the limiting block 12321 is disposed in the elongated slot 12332, the wrench 1235 and the spring 1234 are disposed in the elongated slot 12332, the wrench 1235 extends into the first elongated hole 1132, the second slot 12331 is communicated with the through hole 111, an insertion port 1131 of the second slot 12331 is communicated with the second operating channel 1131, and a length direction of the second slot 12331 is consistent with a length direction of the second operating channel 1131, and a wire pulling channel is formed between the second slot 12331 and the second pin 1232; one end (i.e., the proximal end) of the pull wire 2, which is far away from the interventional medical device 5, sequentially penetrates through the through hole 111 located below the second slot 12331, the second slot 12331 and the through hole 111 located above the second slot 12331, when the free end of the second plug pin 1232 abuts against the bottom surface of the second slot 12331 and the limiting block 12321 is clamped with the wrench 1235, the pull wire 2 is limited between the free end of the second plug pin 1232 and the bottom surface of the second slot 12331.

More specifically, the second base 1233 is disposed in the second mounting groove, an inlet of the second slot 12331 is communicated with one side of the second operating channel 1131, the elongated slot 12332 is spaced apart from the second slot 12331, and a side wall of one end of the elongated slot 12332 is communicated with a bottom portion of the second slot 12331 through a rectangular channel, that is, a width of the rectangular channel is smaller than a width of the bottom of the second slot 12331, the second pin 1232 is of a special-shaped structure, a free end of the second pin 1232 (an end surface of the second pin 1232 facing the second slot 12331) is of a step shape and includes an extending portion and a clamping portion, wherein the extending portion extends into the elongated slot 12332 through the rectangular channel, the stopper 12321 is disposed at a distal end of the extending portion, a width of the stopper 12321 is larger than a width of the rectangular channel, the clamping portion is disposed in the second slot 12331, the wrench 1235 and the spring 1234 are disposed in the elongated slot 12332, and the wrench 1235 is disposed close to the rectangular channel, one end of the spring 1234 abuts against the inner wall of the long groove 12332, the other end of the spring 1234 abuts against the wrench 1235, the end surface of the wrench 1235 facing the limiting block 12321 is an inclined surface, the end surface of the limiting block 12321 facing the wrench 1235 is also an inclined surface, and in addition, the end surface of the limiting block 12321 facing the rectangular channel is a plane.

The pull wire 2 sequentially passes through the through hole 111 located below the second slot 12331, the second slot 12331 and the through hole 111 located above the second slot 12331, when the pull wire 2 needs to be fixed, the second bolt 1232 moves towards the bottom surface of the second slot 12331, the inclined surface on the stopper 12321 moves relative to the inclined surface on the wrench 1235, during the movement, the wrench 1235 moves along the length direction of the long slot 12332, at this time, the spring 1234 is compressed, when the clamping portion of the first bolt 1224 abuts against the bottom surface of the second slot 12331, the inclined surface on the stopper 12321 separates from the inclined surface on the wrench 1235, the spring 1234 restores elastic deformation, the wrench 1235 returns under the action of the spring 1234, the plane (facing the end surface of the rectangular channel) on the stopper 12321 abuts against the plane (the plane on the stopper 12321) on the wrench 1235, at this time, the wrench 1235 fixes the position of the stopper 12321, meanwhile, the position of the second pin 1232 is fixed, and the pull wire 2 is pressed between the clamping portion and the bottom surface of the second slot 12331, so that the fixation of the pull wire 2 is realized; when the length of the pull wire 2 needs to be adjusted, the wrench 1235 is driven to move along the length direction of the long groove 12332, so that the spring 1234 is compressed, the plane on the limiting block 12321 is separated from the plane on the wrench 1235, the second bolt 1232 moves in the direction away from the bottom surface of the second slot 12331, the limiting of the pull wire 2 is released, and after the length adjustment of the pull wire 2 is completed, the fixing process of the pull wire 2 is repeated, so that the re-limiting of the pull wire 2 is realized.

It should be understood that, because the width of the limiting block 12321 is greater than the width of the rectangular channel, when the wrench 1235 releases the limitation on the limiting block 12321, the limiting block 12321 is matched with the elongated slot 12332 to effectively prevent the second pin 1232 from being separated from the second slot 12331, so that the second pin 1232 is effectively prevented from falling off, and the safety of the patient is improved.

It should be pointed out that, a part of body of spanner 1235 extends to in first slot 1132, body that spanner 1235 extends to in first slot 1132 is located below the drill way of first slot 1132, body that spanner 1235 extends to in first slot 1132 can be relative first slot 1132 length or width direction remove, when the restriction of stopper 12321 is relieved to needs, handle spanner 1235 through first slot 1132, thereby make stopper 12321 and spanner 1235 separate, and then realize the separation of second bolt 1232 relative second slot 12331, this kind of simple structure, manufacturing cost, can realize miniaturized production, and simultaneously, the simple operation, shorten the time of operation, reduce patient's misery, in addition, high to the fixed strength who acts as go-between 2, can effectively guarantee the position of acting as go-between 2, and then improve patient's safety in utilization.

Specifically, the fixing assembly 12 further includes a second top plate 1231, the second top plate 1231 is spaced apart from the through hole 12312 and the second long hole 12311, the through hole 12312 connects the second slot 12331 to the through hole 111, the second long hole 12311 is identical to the first long hole 1132 in shape and size, the second top plate 1231 is detachably connected to the top surface of the second base, the second long hole 12311 is disposed corresponding to the first long hole 1132, and the wrench 1235 extends into the first long hole 1132 through the second long hole 12311.

Set up second roof 1231 on the top surface of second base (keeping away from the terminal surface of one side of through-hole 111) with the detachable mode, during the installation, make the hole site of second slot hole 12311 corresponding with the hole site of first slot hole 1132, can realize spacing in vertical direction (with second bolt 1232 moving direction looks vertically direction) second bolt 1232 through this structure, thereby effectively avoid second bolt 1232 not hard up influence to act as go-between 2 fixed effect, and then guarantee the safety that the patient used.

It should be pointed out that, the second slot 12331 is communicated with the through hole 111 through the second transition hole 12333, the second transition hole 12333 is opened on the side of the second slot 12331, the side is parallel to the second operation channel 1122, the second transition hole 12333 is coaxially disposed with the through hole 111, and the diameters of the second transition hole 12333 and the through hole 111 are the same, the limitation of the second plug pin 1232 in the vertical direction can be further realized through the structure, so that the second plug pin 1232 can be effectively limited in the second slot 12331, thereby ensuring the stability of the second plug pin 1232, further improving the fixing strength of the pull wire 2, and ensuring the use safety of the patient.

Based on the above embodiments, the fixing device of the interventional medical instrument provided by the invention has the following beneficial effects compared with the prior art:

3. Avoid acting as go-between impaired, guarantee patient's safety in utilization.

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" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "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. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

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 element, component, 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.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A fixing device of an interventional medical appliance comprises a valve stent and a stay wire connected with the valve stent, the valve stent is completely positioned in an organ after being implanted, the fixing device comprises a fixing component and a gasket provided with a through hole, and is characterized in that the gasket is used for being attached to the outer surface of an organ, the fixing component is detachably connected with the gasket, a stay wire channel is arranged in the fixing component, an internal structure surface is arranged in the fixing component, the stay wire channel is formed through the internal structure surface, the internal structure surface is provided with a movable end surface, the opening or closing of the stay wire channel is realized through the movement of the movable end surface, the stay wire of the interventional medical appliance penetrates out of the interior of the organ and sequentially passes through the through hole and the stay wire channel, the length of the stay wire can be adjusted when the stay wire channel is opened, and the length of the stay wire is fixed when the stay wire channel is closed.

2. The device for fixing an interventional medical instrument according to claim 1, wherein a receiving groove is formed on a side of the through hole away from the visceral organ, a clamping groove is formed on a side wall of the receiving groove, the fixing component is mounted in the receiving groove, and a clamping ring is arranged on an outer surface of the fixing component and clamped in the clamping groove.

3. The device for fixing an interventional medical instrument according to claim 2, wherein the fixing assembly comprises a first fixing seat and a countersunk screw, the first fixing seat is provided with a countersunk hole communicated with the through hole, the countersunk screw is provided with a first via hole along an axial direction thereof, the countersunk screw is further provided with a connecting hole, one end of the connecting hole is communicated with the first via hole, the other end of the connecting hole is communicated with a corner of an outer side surface of the countersunk screw, and the countersunk hole, the first via hole and the connecting hole form the pull wire channel;

one end of the pull wire, which is far away from the interventional medical apparatus, penetrates out of the through hole, the counter sink, the first through hole and the connecting hole, and when the counter sink screw is screwed tightly relative to the counter sink, the pull wire is limited between the counter sink surface of the counter sink screw and the counter sink surface of the counter sink.

4. The fixing device of the interventional medical instrument as set forth in claim 1, wherein the fixing assembly comprises a second fixing seat and a fixing screw, the second fixing seat is provided with a tapered hole communicated with the through hole, the fixing screw is provided with a threading hole along an axial direction thereof, one end of the fixing screw facing the through hole is a tapered end, the tapered end is provided with a plurality of expansion joints at intervals along a circumferential direction, each expansion joint is respectively communicated with the threading hole, and the tapered hole and the threading hole form the threading channel;

the one end warp of taking off and keeping away from intervention formula medical instrument the through-hole the bell mouth with the through wires hole is worn out, set screw is relative when the bell mouth is screwed, the clearance at expansion joint is reduced, makes the stay wire be spacing in the through wires hole orientation port department of through-hole.

5. The device for fixing an interventional medical instrument according to claim 1, wherein a first installation groove is formed in an inner wall of the through hole, the fixing member is installed in the first installation groove, the first installation groove is vertically communicated with a first operation channel, two ports of the first operation channel are respectively formed in a convex arc surface of the gasket, the through hole located above the first installation groove is a first waist hole, and a length direction of the first waist hole is consistent with a length direction of the first operation channel.

6. The device for fixing an interventional medical device according to claim 5, wherein the fixing member comprises a first base having a first slot and a first pin having a locking screw, the first base is engaged with the first mounting groove, the first slot is communicated with the through hole, an insertion opening of the first slot is communicated with the first operating channel, and a length direction of the first slot is identical to a length direction of the first operating channel, the first pin is movably disposed in the first slot, and the pull line channel is formed between the first slot and the first pin;

one end of the stay wire, which is far away from the intervention type medical apparatus, penetrates through the through hole below the first slot, the first slot and the through hole above the first slot in sequence, the free end of the first bolt abuts against the bottom surface of the first slot, when the locking screw is screwed and protrudes out of the surface of the first bolt, the stay wire is limited between the free end of the first bolt and the bottom surface of the first slot.

7. The device as claimed in claim 6, wherein the entrance of the first slot is a concave structure, and two sidewalls of the first pin are respectively concave structures, the concave structures are correspondingly disposed in the concave structures, and the length of the concave structures is equal to the working stroke of the first pin.

8. The device for fixing an interventional medical device according to claim 7, wherein the fixing assembly further comprises a first top plate, the first top plate is provided with a second waist hole, the first top plate is detachably connected with the top surface of the first base, the second waist hole is arranged corresponding to the first waist hole, and the locking screw is movably arranged in the second waist hole.

9. The device as claimed in claim 8, wherein the fixing member further comprises a base plate, the base plate has a guide hole, the base plate is detachably connected to the bottom surface of the first base, the through hole is communicated with the first slot via the guide hole, and when the pull wire is limited, the free end of the locking screw is inserted into the guide hole.

10. The device for fixing an interventional medical device according to claim 1, wherein a second mounting groove is formed in an inner wall of the through hole, the fixing member is mounted in the second mounting groove, the second mounting groove is vertically communicated with a second operation channel, two ports of the second operation channel are respectively formed in a convex arc surface of the gasket, a first long hole is formed in the convex arc surface of the gasket, and the first long hole is communicated with the second mounting groove.

11. The device for fixing an interventional medical instrument according to claim 10, wherein the fixing assembly comprises a second base, a second pin having a stopper, a wrench and a spring, the second base is provided with a second slot and an elongated slot which are communicated with each other, the stopper has a width larger than a width of a communication part of the second slot and the elongated slot, the second pin is movably disposed in the second slot, a free end of the second pin extends in a direction of the elongated slot so that the stopper is disposed in the elongated slot, the wrench and the spring are disposed in the elongated slot, the wrench extends into the first elongated hole, the second slot is communicated with the through hole, an insertion opening of the second slot is communicated with the second operating channel, and a length direction of the second slot is consistent with a length direction of the second operating channel, the wire pulling channel is formed between the second slot and the second bolt;

one end of the stay wire, which is far away from the intervention type medical instrument, penetrates through the through hole below the second slot, the second slot and the through hole above the second slot in sequence, the free end of the second bolt abuts against the bottom surface of the second slot, and the limit block is clamped with the wrench, and the stay wire is limited between the free end of the second bolt and the bottom surface of the second slot.

12. The device as claimed in claim 11, wherein the fixing member further comprises a second top plate, the second top plate has a through hole and a second slot, the through hole connects the second slot to the through hole, the second top plate is detachably connected to the top surface of the second base, the second slot is corresponding to the first slot, and the wrench extends into the second slot through the first slot.