CN109498959A - Coronary artery opening and closing microtubular - Google Patents
Coronary artery opening and closing microtubular Download PDFInfo
- Publication number
- CN109498959A CN109498959A CN201910077996.9A CN201910077996A CN109498959A CN 109498959 A CN109498959 A CN 109498959A CN 201910077996 A CN201910077996 A CN 201910077996A CN 109498959 A CN109498959 A CN 109498959A
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- Prior art keywords
- casing
- clamping
- seal wire
- closing
- coronary artery
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- 210000004351 coronary vessel Anatomy 0.000 title claims abstract description 19
- 230000002441 reversible effect Effects 0.000 claims abstract description 65
- 239000011324 bead Substances 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 11
- 230000006872 improvement Effects 0.000 description 11
- 230000009471 action Effects 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 206010011086 Coronary artery occlusion Diseases 0.000 description 7
- 208000007536 Thrombosis Diseases 0.000 description 6
- 210000004204 blood vessel Anatomy 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 6
- 210000003684 theca cell Anatomy 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000003902 lesion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013146 percutaneous coronary intervention Methods 0.000 description 4
- 230000002792 vascular Effects 0.000 description 4
- 230000002308 calcification Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000001991 pathophysiological effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0113—Mechanical advancing means, e.g. catheter dispensers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M25/09041—Mechanisms for insertion of guide wires
Abstract
The present invention relates to medical instrument, in particular to a kind of coronary artery opening and closing microtubular；The present invention includes first sleeve, the second casing and third casing；The head of first sleeve is provided with Marking ring；The inner sidewall of first sleeve is provided with guidewire lumen, and lateral seal wire is provided in guidewire lumen；The tail portion of second casing is provided with the first pulling head；The tail portion of third casing is provided with the second pulling head, and the head of third casing is provided with clamp system, and the through-hole entered for reverse seal wire is provided in third casing；In the present invention, space is strutted from the guidewire lumen of first sleeve by lateral seal wire, third casing is stretched out out of second casing by pushing the first pulling head to stretch out the second casing, then by the second pulling head, will be clamped from the reverse seal wire in opposite direction using clamp system；Operation of the present invention is convenient, practical.
Description
Technical field
The present invention relates to medical instrument, in particular to a kind of coronary artery opening and closing microtubular.
Background technique
Chronic coronary artery occlusion (CTO) refers to total occlusion of coronary artery and lesion of the off-period greater than 3 months.CTO mesh
Before be still lesion most challenging in percutaneous coronary intervention (PCI).Although in recent years CTO pathophysiological basis,
Special equipment and PCI operation skill etc. all make great progress, but success rate is low and not fully up to expectations, traditional
PCI method success rate is in 50-70% or so.
The reverse interventional therapy CTO technology that Japanese doctor in 2005 starts, hence it is evident that improve CTO lesion interventional therapy at
Power.Wormhole routing (CART) is the most frequently used reversal technique used under Reverse Turning Control forward direction and reverse inner membrance.With new device
Tool emerges, and reverse CART technology has gradually replaced CART technology and occupied dominant position in reversal technique.Reverse CART
Technology cardinal principle is positive feeding seal wire and sacculus, is expanded in CT0 lesion, forms widened true chamber or false chamber, then grasps
Control the true chamber of blood vessel that reverse seal wire eventually enters into the proximal end CTO before to the channel that sacculus generates.But it deposits in operation
Positive microtubular or guiding catheter can not be penetrated in reverse seal wire；Reverse seal wire is not easily accessible positive widened true chamber or vacation
Chamber；The problem of interlayer tears the uncontrollable expansion of false chamber to distal end, or even balloon expandable vacation chamber occur and coronary artery angiorrhoxis is caused to endanger
And the case where patient vitals.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of coronary artery opening and closing microtubulars, by laterally leading
Silk struts space from the guidewire lumen of first sleeve, pulls head to stretch out the second casing by pushing first, then pull by second
Head stretches out third casing out of second casing, will clamp from the reverse seal wire in opposite direction using clamp system.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of coronary artery opening and closing microtubular, wherein including first sleeve, the second casing being socketed in the first sleeve and
The third casing being socketed in second casing；The head of the first sleeve is provided with Marking ring；The first sleeve
Inner sidewall is provided with guidewire lumen, and lateral seal wire is provided in the guidewire lumen；The tail portion of second casing is provided with the first drawing
Dynamic head；The tail portion of the third casing is provided with the second pulling head, and the head of the third casing is provided with reverse for clamping
The clamp system of seal wire is provided with the through-hole entered for reverse seal wire in the third casing.
As an improvement of the present invention, the clamp system includes several guidance clamping lobes, described between each other to draw
It leads clamping lobe and interacts overlapping.
As a further improvement of the present invention, several gripping blocks are provided in the guidance clamping lobe.
As a further improvement of the present invention, the back side of the guidance clamping lobe is provided with guiding rib, and described second set
The guiding rib slot for guiding rib sliding is provided in pipe.
As a further improvement of the present invention, several sawtooth are provided in the gripping block.
As a further improvement of the present invention, the section of the gripping block is trapezoidal.
As a further improvement of the present invention, the clamp system includes guiding net and is arranged in the guiding net
Guiding net overlay film.
As a further improvement of the present invention, it is socketed with Quadruplet pipe in the third casing, the Quadruplet pipe
End face is fixedly and coaxially connected several clamp clips of even circumferential distribution, is provided with gripping block through-hole on the clamp clip, described
Clamping block is connected in gripping block through-hole, the clamping block can block reverse seal wire.
As a further improvement of the present invention, the upper end of the clamping block is connected with card bead, the third casing
Inner wall be provided with clamping guide groove, the card bead can be slided in the clamping guide groove.
As a further improvement of the present invention, the bottom surface of the clamping block is with bevelled wedge structure.
In the present invention, space is strutted from the guidewire lumen of first sleeve by lateral seal wire, pulls head by pushing first
The second casing is stretched out, then stretches out third casing out of second casing by the second pulling head, it will be from phase using clamp system
It is clamped to the reverse seal wire in direction；Operation of the present invention is convenient, practical.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural diagram of the present invention one；
Fig. 2 is structural schematic diagram two of the invention；
Fig. 3 is cross-sectional view of the invention；
Fig. 4 is structural schematic diagram three of the invention；
Fig. 5 is the structural schematic diagram of first sleeve of the invention；
Fig. 6 is the cross-sectional view of first sleeve of the invention；
Fig. 7 is the attachment structure schematic diagram one that the present invention clamps reverse seal wire；
Fig. 8 is the attachment structure schematic diagram two that the present invention clamps reverse seal wire；
Fig. 9 is the third casing of the embodiment of the present invention one and the attachment structure schematic diagram of clamp system；
Figure 10 is the main view of Fig. 9；
Figure 11 is schematic diagram one after the expansion of clamp system in embodiment one；
Figure 12 is the side view of Figure 11；
Figure 13 is the structural schematic diagram one of the guidance clamping lobe of embodiment one；
Figure 14 is the structural schematic diagram one of the guidance clamping lobe of embodiment one；
Figure 15 is schematic diagram two after the expansion of clamp system in embodiment one；
Figure 16 is the side view of Figure 15；
Figure 17 is the structural schematic diagram of the second casing in embodiment one；
Figure 18 is the structural schematic diagram one of the guidance clamping lobe in the embodiment of the present invention one；
Figure 19 is the structural schematic diagram one of the guidance clamping lobe in the embodiment of the present invention one；
Figure 20 is the schematic diagram after the expansion of the guiding net of the embodiment of the present invention two；
Figure 21 is the connection schematic diagram of the embodiment of the present invention two；
Figure 22 is that Quadruplet pipe is socketed in the inside connection schematic diagram in third casing in embodiment two；
Figure 23 is the schematic diagram of internal structure of Quadruplet pipe in embodiment two；
Figure 24 is the schematic diagram of internal structure of third casing in embodiment two；
Wherein appended drawing reference are as follows: 1- first sleeve, 11- Marking ring, 12- guidewire lumen, the side 13- is to seal wire, the second casing of 2-, 21-
First pulls head, 22- guiding rib slot, 3- third casing, the pulling head of 31- second, 32- through-hole, 4- clamp system, 41- guidance folder
Tight valve, 411- gripping block, 412- sawtooth, 413- guiding rib, 42- guiding net, 421- guiding net overlay film, the reverse seal wire of 5-, 6-
Quadruplet pipe, 61- clamp clip, 62- clamp clip through-hole, 63- clamping block, 64- card bead, 65- clamp guide groove.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
As shown in Fig. 1 to Figure 24, a kind of coronary artery opening and closing microtubular of the invention, including first sleeve, it is socketed in
The second casing in sleeve and the third casing 3 being socketed in the second casing.
The head of first sleeve is provided with Marking ring 11；The inner sidewall of first sleeve is provided with guidewire lumen 12, guidewire lumen 12
Inside it is provided with lateral seal wire 13.
The tail portion of second casing is provided with the first pulling head 21.
The tail portion of third casing 3 is provided with the second pulling head 31, and the head of third casing 3 is provided with inversely leads for clamping
The clamp system 4 of silk 5 is provided with the through-hole 32 entered for reverse seal wire 5 in third casing 3.
In the present invention, space is strutted from the guidewire lumen 12 of first sleeve by lateral seal wire 13, is drawn by pushing first
Dynamic head 21 stretches out the second casing, then stretches out third casing 3 out of second casing by the second pulling head 31, using clamping machine
Structure 4 will be clamped from the reverse seal wire 5 in opposite direction.
As shown in figure 9, the present invention provides a kind of embodiment of clamp system 4, clamp system 4 includes several guidance folders
Tight valve 41, guides clamping lobe to interact overlapping between each other, so that all of even circumferential distribution can guide clamping lobe 41
The adjacent interlaced overlapping of guidance clamping lobe 41 in unified front and back, when the movement opened and collapsed occurs in guidance clamping lobe 41
When, all guidance clamping lobes 41 of circumference can unify the synchronous effect for realizing and opening and collapsing.
In the present invention, it guides in clamping lobe 41 and is provided with several gripping blocks 411.Guide the back side setting of clamping lobe 41
There is guiding rib 413, the guiding rib slot 22 slided for guiding rib 413 is provided in the second casing.Guiding rib 313 and the second casing
The guiding rib slot 22 of 2 front-end port interior open section regions setting, the guiding of guiding rib slot 22 and guidance 41 lateral surface of clamping lobe
Muscle 413 coincide.When the second casing 2 axially slides relative with third casing 3 to be made to guide clamping lobe 41 that folding and unfolding effect occurs,
The guiding rib slot 22 and third casing 3 of second casing 2 guide the guiding rib 413 of clamping lobe 41 to play guiding role.
In the present invention, several sawtooth 412 are provided in gripping block 411.The section of gripping block 411 is trapezoidal.Guidance
The gripping block 411 of the front end in gripping block 411 arranged before and after clamping lobe 41, can be in order to using open circular arc chamfering design
Reverse seal wire 5 is passed through.Gripping block 411 clamp face using matrix form sawtooth 412 arrange, and gripping block 411 plus
The sawtooth 412 in tight face, can be to the increase friction of reverse 5 surface of seal wire to clamping using the face of stepping up of sawtooth form towards rear side
To double shield, while sawtooth 412 can play the role of unidirectionally limiting using the design towards rear side to reverse seal wire 5, make
Reverse seal wire 5 can not pull back disengaging.
The present invention provides the another embodiment of clamp system 4, and clamp system 4 includes that guiding net 42 and setting are guiding
Guiding net overlay film 421 on net 42.It is provided in third casing 3 and tightens promotion set 422, tightened in promotion set 422 and be cased with clamping
Bar 423, clamping bar 423 are communicated with soft set 424 is tightened；It tightens to be provided on soft set 424 and tightens soft set volume circle 425.Tighten promotion
Several pieces of promotion pieces 426 are provided on set 422.
In the present invention, baffle ring 23 is provided on the first pulling head 21.
As shown in Fig. 9 to Figure 17, the present invention provides embodiment one, and the periphery of the embodiment one is cased with first sleeve 1, and first
It is rounded corners at the front-end port of casing 1 convenient for being passed through patient's body, is evenly distributed in the tube wall inner periphery point of first sleeve 1
Several guidewire lumen 12(the present embodiment one use four guidewire lumens 12), guidewire lumen 12 is from end face edge from 1 back-end ports of first sleeve
It is open-minded from 1 tube wall of first sleeve by front end area that first sleeve 1 is passed to axially forward, so that lateral seal wire 13 is from first sleeve 1
It is passed through inside the guidewire lumen 12 of rear end, lateral seal wire 13 is fed forward so that lateral 13 front end of seal wire is from 1 front end region of first sleeve
Extend pass-out at the tube wall of domain, allow lateral seal wire 13 relative to first sleeve 1 it is angled be angled towards access tube
Lumen wall direction.It is inlaid with Marking ring 11 in 1 front end area front end area circumference of first sleeve, so that first sleeve 1 is passed through trouble
1 front end of first sleeve can be confirmed in patient's body position by radiography when inside person's lumen of a body vessel.In 1 internal sleeve of first sleeve
There is the second casing 2, the second casing 2 can be handheld terminal in 1 inside easy slide of first sleeve, 2 back-end region of the second casing, i.e.,
Head 21 is pulled for first, there are two circles along being fixed as one respectively axially back and forth for 2 pipe outer wall circumference of the second casing of handheld terminal in rear end
Week baffle ring 23 outstanding, two baffle rings 23 clamping the second casing 2 of control by 2 rear end of the second casing along sliding axially back and forth,
The 23 periphery bore of baffle ring of second casing 2 is greater than 1 tube wall bore of first sleeve, and the baffle ring 23 of the second casing 2 is played
Position-limiting action.Second casing, 2 inner cavity front end area is set as slightly open design, the open-mouth section in 2 inner cavity front end of the second casing
The design of medial surface even circumferential has several groups guiding rib slot 22, and guiding rib slot 22 is in front and back direction.Is cased with inside second casing 2
Three casings 3,33 rear end of third casing have above-mentioned second casing 2 mutually isostructural second to pull head 31, again may be by holding
The axial movement of control third casing 3 is clamped, the endface circumference in 3 front end end of third casing is fixedly connected with several guidance
Clamping lobe 41.Guidance clamping lobe 41 is the medical silica-gel material with some strength, has stronger elastic deformation characteristic.Guidance
After clamping lobe 41 it is narrow before wide, and global shape arc in curved surface, it is adjacent between a part of region phase of 41 avris of guidance clamping lobe
It is mutually overlapping, so that all 41 phases of guidance clamping lobe that the unified front and back of clamping lobe 41 can be guided adjacent of even circumferential distribution
It is mutually overlapping, when guiding clamping lobe 41 movement opened and collapsed occur, all guidance clamping lobes 41 of circumference can
With the unified synchronous effect realizing opening and collapsing.Under the action of no external force, guidance clamping lobe 41 is in 3 front end of third casing
Open configuration with certain angle pushes the second casing 2 relative to third set when guiding clamping lobe 41 to need to close up
Pipe 3 is moved axially forward, and the slightly open design of the front-end port of the second casing 2 is convenient for the guidance to 3 front end of third casing to press from both sides
Tight valve 41 is collapsed, and is fixedly installed several front and backs in the region of the lateral surface noninterlace overlapping of each guidance clamping lobe 41
Three guiding ribs 413 are used towards parallel guiding rib 413(the present embodiment one), 2 front-end port of guiding rib 313 and the second casing
The guiding rib 413 of the guiding rib slot 22 of interior open section region setting, guiding rib slot 22 and guidance 41 lateral surface of clamping lobe coincide.
When the second casing 2 axially slides relative with third casing 3 to be made to guide clamping lobe 41 that folding and unfolding effect occurs, the second casing 2
Guiding rib slot 22 and third casing 3 guide clamping lobe 41 guiding rib 413 play guiding role.In 41 inside of guidance clamping lobe
Face is fixed with several gripping blocks, and gripping block 411 is along guidance 41 front-rear direction of clamping lobe direction arrangement.When guidance clamping lobe 41 is closed
Gripping block 411 plays clamping action to the reverse seal wire 5 of axial location when holding together, and several gripping blocks 411 of front and back arrangement are to reverse
Seal wire 5 can play the role of reverse seal wire orientation while clamping.Gripping block 411 narrows from the width from root to top width,
Section is more firm to being fixedly clamped for reverse seal wire 5 using trapezoidal can be designed so that.Each 41 front and back of guidance clamping lobe
The gripping block 411 of front end in the gripping block 411 of arrangement, can be in order to reverse seal wire 5 using open circular arc chamfering design
It is passed through.It is arranged in the face that clamps of gripping block 411 using the sawtooth 412 of matrix form, and the sawtooth for stepping up face of gripping block 411
412 towards rear side, is stepped up face using sawtooth form and can be played dual guarantor to clamping to the increase friction of reverse 5 surface of seal wire
Barrier, while sawtooth 412 can play the role of unidirectionally limiting using the design towards rear side to reverse seal wire 5, so that inversely leading
Silk 5 can not pull back disengaging.Occurring thrombus obstruction inside the lumen that patient's body needs to establish calcification score channel can not be passed through
When seal wire, needs to capture the seal wire being inversely passed through in patient's body and establish calcification score channel.By initial seal wire (figure
In do not show) be passed through patient's body and be delivered to and set up the channel of positive section at the thrombus of lumen after, by 1 housing of first sleeve
At the thrombus that initial seal wire is delivered to lumen under draw, then it is passed through inside the guidewire lumen from 1 tube wall of first sleeve
Lateral seal wire 13, lateral seal wire 13 are stretched out from 12 exit of front end guidewire lumen of first sleeve 1, the lateral seal wire 13 of section of stretching out with
First sleeve 1 it is in a certain angle it is oblique be passed through in the tube wall of vessel lumen because vascular wall is divided into theca interna, middle film layer, outer
Film layer.The theca interna of vascular wall and middle film layer are separated from interlayer for boundary by the prior art, then in first sleeve
Portion is cased with the second casing 2, third casing 3 and other structures.And the second casing 2 and third casing 3 are prolonged from 1 front end of first sleeve
Stretch out, and be passed through to the interlayer of vascular wall theca interna and middle film layer so that the theca interna of vascular wall and middle film layer it
Between interlayer strut into cavity area, at this time by microtubular and its internal perforative reverse seal wire 5 from the blood vessel pipe of the thrombus other side
Chamber channel is passed through and reverse conveying in the blood vessel, and makes reverse seal wire 5 thrombus other side from blood vessel by the prior art
Blood vessel is passed through into interlayer internal cavities.So that the second casing 2 and third casing 3 and reverse seal wire 5 are respectively from two of thrombus
Direction is passed through in opposite directions to blood vessel and closes in theca interna and the interlayer of middle film layer.In the initial state, guidance clamping lobe 41 collapse in
Inside second casing 2, third casing 3 is pushed forward at this time, so that the guidance clamping lobe 41 that 3 front end of third casing is fixedly connected is stretched
The second casing 2 forms splaying effect out, during guiding clamping lobe 41 to stretch out the second casing 2,41 outside of guidance clamping lobe
The mutually guiding cooperation of guiding rib slot 22 in the 2 leading portion region inner cavity of guiding rib 413 and the second casing in face is so that guidance clamping lobe
41 can play good guiding role during discharging and opening, and prevent guidance clamping lobe 41 from occurring during release askew
Tiltedly with torsion.After the guidance release of clamping lobe 41 is opened, the reverse seal wire 5 of the other side is pushed forward so that reverse seal wire exists
It guides and is directed in 3 inner cavity of third casing under the open guiding function of clamping lobe 41, then pull back third casing 3, make
Third casing 3 moves axially rearward relative to the second casing 2, the open guiding rib slot 22 in the second casing 2 leading portion inner cavity
Under constraint, the guidance clamping lobe 41 of circle distribution, which synchronizes, is closed up, the final folder for guiding 41 medial surface of clamping lobe to be fixedly connected
Tight block 411 is clamped reverse seal wire 5, to realize that the reverse capture to reverse seal wire 5 is fixed.Then it pulls back simultaneously
Third casing 3 and the second casing 2, so that the guidance clamping lobe 41 that 3 front end of third casing is fixedly connected clamps reverse seal wire from
1 rear end of sleeve pulls out, so that intervening reverse seal wire 5 sets up calcification score channel.
It has the advantages that in example 1
1,3 front end surface of third casing is fixedly connected with the guidance clamping lobe 41 of circle distribution, guides clamping lobe 41 similar to similar
Petal design is distributed and can carry out opening and closing under the booster action of the second casing 2, and when opening can play guidance to reverse seal wire 5
The effect of capture, when gathering, can smoothly convey in patient's body lumen again, substantially increase the capture effect of reverse seal wire 5
Rate can simplify the operation difficulty of medical staff again simultaneously.And the side area of the adjacent guidance clamping lobe 41 in front and back is interlaced heavy
It is folded, it mutually pushes, reaches with when gathering so that all guidance clamping lobes 41 of circle distribution can be opened in release
The effect of Integral synchronous folding.
2, it guides the lateral surface of clamping lobe 41 to be fixed with guiding rib 413, while being set in the leading portion region of 2 inner cavity of the second casing
In respect of the guiding rib slot 22 coincideing with guiding rib 413, so that guidance clamping lobe 41 may have second during discharging and opening
The guiding rib slot 22 of casing 2 is oriented to it, avoids occurring skew in release with torsion to cause to reverse seal wire
Appearance the case where structural instability when being clamped fixed.
3, the medial surface of each guidance clamping lobe 41 is fixed with gripping block 411 along the longitudinal direction, and gripping block 411, which uses, to be had
Some strength, certain elastic deformation characteristic medical macromolecular materials.411 section of gripping block can concentrate binding force using trapezoidal
Reverse seal wire is clamped, the teeth directional that face design has matrix to arrange of stepping up of gripping block 411 can be with towards the sawtooth 412 of rear side
When clamping, increasing friction force prevents from reverse seal wire 5 from sliding backward falling off simultaneously.There is multiple design in same guidance clamping lobe 41
The clamping direction for the reverse seal wire of positioning that gripping block 411 can consolidate.Gripping block 411 and guidance clamping lobe 41 cooperate so that guiding
By gripping block 411 to inverse when playing guidance to reverse seal wire 5 when clamping lobe 41 can not only open to be passed through, but also can be closed
Play the role of being fixedly clamped to seal wire 5；Easy to operate, efficiency doubles.
4, axially inside no less than two guidewire lumens 12, guidewire lumen 12 is distributed in even circumferential to 1 tube wall of first sleeve
It opens from the rear end face of first sleeve 1 to the tube wall opening of front end area；Patient's body lumen can be entered in first sleeve 1
Progress when needing to be passed through lateral seal wire 13 later by guidewire lumen 12 according to the actual situation, leads using circle distribution is a plurality of
Silk chamber 12 can centering as far as possible in a circumferential direction.
The present invention provides embodiment two and in example 2, is cased with inside the second casing 2 as shown in Figure 18 to Figure 24
Third casing 3, the design of 3 front end end of third casing have sealing bottom surface, and sealing bottom surface middle position is provided with circular hole, and circular hole is for inverse
Pass through to seal wire, guiding net 42 is fixed on the outer end face of 3 front end of third casing, guiding net 42 uses shape shape-memory titanium-nickel alloy net
Silk woven structure, peripheral helical winding-type designs guiding net in the form of sheets, after thick before being formed after sheet circumference winds backrush
Thin horn shape, and guiding net 42 the avris region of winding have certain overlay region, using winding backrush it is horn-like and
Overlapping certain area to can be designed so that guiding net 42 can carry out collapsing when moved axially forward by the second casing 2 dynamic
Make, when guiding net 42 carries out gathering movement, gradually region area becomes larger during gathering for the overlapping region of guiding net 42,
Guiding net 42 is gradually closed up to be contracted in 2 inner cavity of the second casing under the action of the second casing 2.It is wound using circumference
It is rolled into horn-like situations such as guiding net 42 can be made not fold during contraction is closed up with overlapping region.
Guiding net 42 has certain intensity, and guiding net 42 is the open state opened when under the action of no external force, can be to reverse
Guiding function is played in the capture of seal wire 5, one layer of guiding net overlay film 421 is glued on the inner layer surface of guiding net 42, guiding net is covered
Film 421 can prevent reverse seal wire 5 that can be stuck among the mesh for being guided to be stuck in guiding net 42 when 42 inverse guiding of net, to inverse
Smooth guidance to seal wire 5 plays the role of dual guarantee.Quadruplet pipe 6, Quadruplet pipe are cased in 3 inner cavity of third casing
6 rear ends extend third casing 3 and are designed as T-type structure in 6 rear end end of Quadruplet pipe, convenient for pushing away to Quadruplet pipe 6
It draws.6 front end surface of Quadruplet pipe is fixedly and coaxially connected several clamp clips 61 of even circumferential distribution, in the clamping of circle distribution
Piece 61 is evenly arranged with several gripping block through-holes 62 along axial direction, and 62 section of gripping block through-hole is square, in the clamping of clamp clip 61
Clamping block 63 is cased with inside block through-hole 62,63 section of clamping block is that rectangular and gripping block through-hole 62 coincide, in the upper of clamping block 63
End is fixed as one and has card bead 64, and card bead 64 is spheroidal, and the section of card bead 64 is greater than the section of clamping block, so that card bead 64 can
To play position-limiting action on clamp clip 61 to clamping block 63.It is with bevelled wedge shape knot in the floor design of clamping block 63
Structure, and make the inclined-plane of wedge structure towards preceding extreme direction, when reverse seal wire 5 is passed through 61 inside of clamp clip, clamping block 63
Wedge structure is stuck in the barber-pole stripes of reverse seal wire 5, so as to play unidirectional position-limiting action to reverse seal wire 5, so that inverse
It can push, and can not pull back inside the clamp clip 61 of circle distribution towards rear extreme direction in 61 inside of clamp clip to seal wire 5
It takes out.The card bead 64 for corresponding to clamping block 63 on clamp clip 61 in 3 inner cavity of third casing simultaneously is axially disposed clamping guide groove
65, guiding can be played to card bead 64 and clamp clip 61 when moving to axial convenient for Quadruplet pipe 6 and third casing 3
Effect, so that Quadruplet pipe 6 will not twist relative to third casing 3, but also clamping block 63 is in reverse seal wire 5
Detent can be consolidated more.
It is had the advantages that in embodiment two
1,3 lumen circumference of third casing be provided with clamp guide groove 65 can be to the gripping block of 6 front end clamp clip 61 of Quadruplet pipe
The gripping block 63 of 62 internal run-through of through-hole plays the role of press, fixes so that the gripping block 63 made plays detent to reverse seal wire 5
Effect.The floor design of clamping block 63 is and to make the inclined-plane of wedge structure towards preceding extreme direction with bevelled wedge structure,
Can play the role of to reverse seal wire 5 it is unidirectionally locked so that neither influencing reverse seal wire 5 to being passed through inside clamp clip 61 and can be with
Make reverse seal wire 5 that can not pull back slippage；
2,423 front end of clamping bar in 3 inner cavity of third casing is clamped with by tightening soft set volume circle 425 and tightens the one of soft set 424
End, original state are that back segment inflection is rolled in volume round state, push beam by tightening promotion set 422 after reverse seal wire 5 is passed through
The reverse formation of seal wires 5 of 425 pairs of circle of soft set volume of tightening of tight soft 424 rolled-up area of set is extracted and is tightened, so that realization is to reverse seal wire
The effect tightened.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of coronary artery opening and closing microtubular, which is characterized in that including first sleeve, be socketed in the first sleeve
Two casings and the third casing being socketed in second casing；The head of the first sleeve is provided with Marking ring；Described
The inner sidewall of sleeve is provided with guidewire lumen, and lateral seal wire is provided in the guidewire lumen；The tail portion of second casing is arranged
There is the first pulling head；The tail portion of the third casing is provided with the second pulling head, and the head of the third casing, which is provided with, to be used for
The clamp system of reverse seal wire is clamped, the through-hole entered for reverse seal wire is provided in the third casing.
2. a kind of coronary artery opening and closing microtubular according to claim 1, which is characterized in that if the clamp system includes
Dry guidance clamping lobe, the mutual guidance clamping lobe interact overlapping.
3. a kind of coronary artery opening and closing microtubular according to claim 2, which is characterized in that set in the guidance clamping lobe
It is equipped with several gripping blocks.
4. a kind of coronary artery opening and closing microtubular according to claim 3, which is characterized in that the back of the guidance clamping lobe
Face is provided with guiding rib, and the guiding rib slot for guiding rib sliding is provided in second casing.
5. a kind of coronary artery opening and closing microtubular according to claim 4, which is characterized in that be provided in the gripping block
Several sawtooth.
6. a kind of coronary artery opening and closing microtubular according to claim 5, which is characterized in that the section of the gripping block is
It is trapezoidal.
7. a kind of coronary artery opening and closing microtubular according to claim 1, which is characterized in that the clamp system includes drawing
Wire guide and the guiding net overlay film being arranged in the guiding net.
8. a kind of coronary artery opening and closing microtubular according to claim 7, which is characterized in that socket in the third casing
There is Quadruplet pipe, the end face of the Quadruplet pipe is fixedly and coaxially connected several clamp clips of even circumferential distribution, the clamping
On piece is provided with gripping block through-hole, and clamping block is connected in the gripping block through-hole, and the clamping block can block reverse seal wire.
9. a kind of coronary artery opening and closing microtubular according to claim 8, which is characterized in that the upper end one of the clamping block
Body is connected with card bead, and the inner wall of the third casing is provided with clamping guide groove, and the card bead can be in the clamping guide groove
Sliding.
10. a kind of coronary artery opening and closing microtubular according to claim 9, which is characterized in that the bottom surface of the clamping block
For with bevelled wedge structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910077996.9A CN109498959A (en) | 2019-01-28 | 2019-01-28 | Coronary artery opening and closing microtubular |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910077996.9A CN109498959A (en) | 2019-01-28 | 2019-01-28 | Coronary artery opening and closing microtubular |
Publications (1)
| Publication Number | Publication Date |
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| CN109498959A true CN109498959A (en) | 2019-03-22 |
Family
ID=65758257
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910077996.9A Pending CN109498959A (en) | 2019-01-28 | 2019-01-28 | Coronary artery opening and closing microtubular |
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| CN (1) | CN109498959A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112843426A (en) * | 2020-08-05 | 2021-05-28 | 中国人民解放军海军军医大学第一附属医院 | Single-channel double-outlet vascular sheath |
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