CN109700507A - Sting device - Google Patents
Sting device Download PDFInfo
- Publication number
- CN109700507A CN109700507A CN201811625646.3A CN201811625646A CN109700507A CN 109700507 A CN109700507 A CN 109700507A CN 201811625646 A CN201811625646 A CN 201811625646A CN 109700507 A CN109700507 A CN 109700507A
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- Prior art keywords
- hole
- distal end
- conduit
- puncture
- face
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Abstract
The invention discloses a kind of sting devices, including conduit and piercing mechanism, the piercing mechanism part is set to inside the distal end of catheter, the piercing mechanism includes puncture portion, interconnecting piece and fixed part, the fixed part is set in the conduit and is fixedly connected with the conduit, puncture portion part is set to inside the distal end of catheter, the puncture portion is connected by the interconnecting piece with the fixed part, the interconnecting piece includes elastic component, and the puncture portion can be moved axially relative to the conduit to distal end under the elastic force effect of the interconnecting piece.Sting device provided by the invention, puncture portion is arranged to be connected by an elastic component with conduit, so that puncture portion is mobile towards distal end under the action of the elastic member after puncturing successfully, contrast agent in conduit can be flowed out out of conduit simultaneously, judge to puncture with this and whether succeed, the usage amount of contrast agent is greatly reduced, more securely and reliably.
Description
Technical field
The present invention relates to intervention medical fields, and in particular to a kind of sting device.
Background technique
On some clinical medicines, such as in the operation of left atrial appendage occlusion, atrial fibrillation ablation, mitral valve replacement, it is often necessary to will
Medical instrument is sent to working in atrium sinistrum, is intervened via the blood vessel being connected with atrium sinistrum to atrium sinistrum, because of the bending of blood flow paths
Complexity is high, is almost difficult to send instrument to atrium sinistrum along these blood vessels via these blood vessels.Therefore, most into atrium sinistrum
Common method be medical instrument is pushed into atrium dextrum through venipuncture intervention, and transatrial septal puncture and enter atrium sinistrum.
Traditional Interaurcular septum puncture needle is made of a stainless steel tube, and the tip of traditional puncture needle holds during transportation
It easily scratches sheath inside pipe wall to generate clast or scratch tissue inner wall, causes thrombus, bring harm to patient.In addition, being carried out puncturing
When, generally require whether to succeed by judging to puncture to internal injection contrast agent, if puncture is undesirable, needs repeatedly to wear
Thorn, operating time is long, this also be easy to cause contrast agent using excessively, generates certain postoperative side effect to patient, such as generates local
The serious side effects such as pain, edema of limbs, stupor even heartbeat stopping.
Based on this, it is necessary to design in a kind of puncture process can timely release contrast agents, strict control contrast agent uses, and
The sting device of thrombus caused by tissue will not be fallen or scratched because of sheath clast.
Summary of the invention
The present invention provides a kind of sting device, including conduit and piercing mechanism, the piercing mechanism part is set to described
Inside distal end of catheter, the piercing mechanism includes puncture portion, interconnecting piece and fixed part, the fixed part be set in the conduit and
It is fixedly connected with the conduit, puncture portion part is set to inside the distal end of catheter, and the puncture portion passes through the connection
Portion is connected with the fixed part, and the interconnecting piece includes elastic component, and the puncture portion can under the elastic force effect of the interconnecting piece
It is moved axially relative to the conduit to distal end.
In one embodiment, the fixed part is set to inside the distal end of catheter, and the fixed part is column structure and sets
There are first through hole, distal end end face and proximal face of the first through hole through the fixed part.
In one embodiment, the puncture portion includes puncture component and connector, and the puncture component and the connector are distally
It is connected, the connector is movably contained in the conduit, and the puncture component is part sphere.
In one embodiment, the distal end of catheter end face is equipped with the second through-hole, and second through-hole is remote through the conduit
End face is held, and the aperture of second through-hole is less than the internal diameter of the conduit and the radius of the puncture component proximal face, institute
Connector is stated movably to be contained in the conduit by second through-hole.
In one embodiment, the connector includes cylinder and disk body, distal end disk and the cylinder of the disk body
Proximal end is connected, and the outer diameter of the cylinder is not more than the aperture of second through-hole, and the disk body is contained in the conduit, and institute
The radius for stating the distal end disk of disk body is greater than the aperture of second through-hole.
In one embodiment, the distal end of catheter end face is additionally provided with third through-hole, when the puncture component is proximally facing mobile
Second through-hole and the third through-hole can be covered；When the puncture portion is mobile towards distal end, described in the disk body only covers
Second through-hole.
In one embodiment, radial through-hole and an axially extending bore, the axially extending bore are set there are two setting on the cylinder
Between described two radial through-hole and it is connected to described two radial through-hole.
In one embodiment, the distance between described two radial through-hole are greater than the axial thick of the distal end of catheter end face
Degree.
In one embodiment, the interconnecting piece is spring.
Puncture portion is arranged to be connected by an elastic component with conduit, so that puncture portion by sting device provided by the invention
Mobile towards distal end under the action of the elastic member after puncturing successfully, the contrast agent in conduit can be flowed out out of conduit simultaneously, with this
Judge to puncture and whether succeed, greatly reduces the usage amount of contrast agent, more securely and reliably.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the sting device of the embodiment of the present invention one；
Fig. 2 is sting device distal portion the schematic diagram of the section structure shown in FIG. 1, including puncture portion；
Fig. 3 is the part-structure enlarged drawing of sting device shown in Fig. 2；
Fig. 4 is the part-structure enlarged drawing of sting device shown in Fig. 2；
Fig. 5 is structural schematic diagram when puncture portion is mobile towards distal end in sting device distal portions shown in Fig. 2；
Fig. 6 is the sting device distal portions structural schematic diagram of the embodiment of the present invention two, including puncture portion；
Fig. 7 is the part-structure enlarged drawing of sting device shown in fig. 6；
Fig. 8 and Fig. 9 is structural representation when puncture portion is mobile towards distal end in sting device distal portions shown in fig. 6
Figure.
Specific embodiment
Technical scheme and beneficial effects for a better understanding of the invention, are the present invention below in conjunction with attached drawing and illustrate
Bright, following specific embodiments are only certain preferred embodiments of the invention, not limitation of the present invention.
In intervention medical field, definition is " proximal end " by one end of proximal operator, and one end far from operator is " distal end ".
Embodiment one
As shown in Figure 1, the sting device 100 of the present embodiment includes piercing mechanism 10, conduit 20 and control mechanism 30.Its
In, control mechanism 30 is set to the proximal end of conduit 20, advances and punctures in vivo to control piercing mechanism 10.Conduit 20 is hollow
Tubular structure, 10 part of piercing mechanism are set to the distal internal of conduit 20.
Fig. 2 shows the cross-section structures of 100 distal portion of sting device.Piercing mechanism 10 includes puncture portion 11, interconnecting piece 12
With fixed part 13.Fixed part 13 is set in conduit 20 and is fixedly connected with 20 inner wall of conduit.11 part of puncture portion is set to conduit 20
It is internal and can be moved axially relative to conduit 20.Puncture portion 11 is connected with fixed part 13 by interconnecting piece 12.Interconnecting piece 12 is
Elastomer, such as spring.Puncture portion 11 can be mobile towards distal end under the drive of interconnecting piece 12, on the contrary, puncture portion 11 is by court
When external force proximally, interconnecting piece 12 can also compressed.
As shown in figure 3, fixed part 13 is set to 20 distal internal of conduit, it is static relative to conduit 20.The proximal end of interconnecting piece 12
It is connected with the distal end end face of fixed part 13.Fixed part 13 is column structure and is equipped with first through hole 131, and first through hole 131 runs through
The distal end end face of fixed part 13 and proximal face enable logical from the contrast solution that 20 proximal end of conduit is injected from the proximal end of fixed part 13
Cross the distal end that first through hole 131 flow to fixed part 13.The quantity of first through hole 131 can be multiple, such as 1 ~ 8；First through hole
131 can be randomly provided on fixed part 13, can also be uniformly arranged around the central axis of fixed part 13.The material of fixed part 13
Material is chosen as metal or plastics etc..
As shown in figure 4, the distal end end face of conduit 20 is equipped with the second through-hole 21, the second through-hole 21 runs through the distal end of conduit 20
End face.The central point of second through-hole 21 is overlapped with the central point of 20 distal end end face of conduit, and the aperture of the second through-hole 21 be less than lead
The internal diameter of pipe 20.Third through-hole 22 is additionally provided on 20 distal end end face of conduit, third through-hole 22 can be arranged around the second through-hole 21,
Quantity can be multiple.
Puncture portion 11 includes puncture component 111 and connector (figure is unlabeled).Puncture component 111 is set to connector distal end, connection
Part is movably contained in conduit 20.Puncture component 111 be part sphere, and towards the face of distal end be spherical calotte, it is proximally facing
Face be the distal end end face of plane namely puncture component 111 be spherical surface, proximal face is plane.In the present embodiment, puncture component 111
Preferably hemisphere, and radius of sphericity is equal with the outer diameter of conduit 20, in this way, the outer surface of conduit 20 is remote with puncture component 111
End end face can form rounding off, prevent plowing from tissue.Connector includes cylinder 112 and disk body 113, the distal end disk of disk body 113
Face is connected with the proximal end of cylinder 112.Cylinder 112 runs through the second through-hole 21 of 20 distal end end face of conduit, so that disk body 113 is complete
It is contained in inside conduit 20.Therefore the outer diameter of cylinder 112 is not more than the aperture of the second through-hole 21, but the distal end disk of disk body 113
Outer diameter is greater than the internal diameter of the second through-hole 21.Puncture portion 11 can cover conduit 20 when being moved to the near end by proximally facing external force
The second through-hole 21 and third through-hole 22 on the end face of distal end；Puncture portion 11 is moved in the power by interconnecting piece 12 towards distal end to distal end
When dynamic, disk body 113 is also mobile towards distal end, but because the radius of the distal end disk of disk body 113 is greater than the aperture of the second through-hole 21, institute
The second through-hole 21 can be covered with disk body 113, and when the contacted inner surfaces of the distal end end face of disk body 113 and conduit 20, puncture portion
11 will not continue to towards distal end movement.In order to guarantee that contrast agent is remained to out of conduit 20 after disk body 113 covers the second through-hole 21
Portion's outflow, by the radius of the distal end disk of disk body 113 be set smaller than third through-hole 22 to conduit 20 distal end end face center away from
From that is, disk body 113 is mobile towards distal end and cannot cover third through-hole 22 when being in contact with 20 distal end end face inner surface of conduit.
The sting device 100 of the present embodiment can be connected to by control mechanism 30 with external radio-frequency power supply.Sting device 100
Length direction also along conduit 20 is laid with conducting wire (not shown go out), and the distal end of conducting wire is connected with puncture portion 11, the proximal end of conducting wire
It is connected with control mechanism 30.On control mechanism 30 after external radio-frequency power supply, puncture portion 11 can get high thermal energy, then pass through height
Heat realizes tissue penetration.
When being punctured using the sting device 100 of the present embodiment, under original state, puncture portion 11 is by interconnecting piece 12
Towards the thrust of distal end, so that disk body 11 is in contact with the distal end end face inner surface of conduit 20.Firstly, sting device 100 is in body
Interior traveling, until the distal end end face in puncture portion 11 offsets with the tissue of piercing portions is needed, puncture portion 11 counter is pushed away by what is organized
The proximally facing movement of power, until the proximal face of puncture component 111 and the distal end end face outer surface of conduit 10 offset, and puncture component
The second through-hole 21 and third through-hole 22 being arranged on 20 distal end end face of conduit is at least completely covered in 111 proximal face, and Fig. 2 shows
The relative positional relationship of each component of 100 distal portion of stoma instrument at this time is gone out.Then, through control mechanism 30 into conduit 20
Contrast agent is injected in portion, since the proximal face of puncture component 111 and the distal end end face of conduit 20 offset at this time, and 21 He of the second through-hole
Third through-hole 22 is punctured the proximal face covering of part 111 completely, although contrast agent flows into conduit 20 far from first through hole 131
End is internal, but can't go out from the distal end surface current of conduit 20.Then, external radio-frequency power supply is connected, after puncture portion 11 is powered
The tissue contacted therewith is punctured, after puncturing successfully, just no longer in a organized way with the distal end end face phase of puncture component 111
It supports, also just under thrust of the interconnecting piece 12 towards distal end, is punctured without external force proximally facing in puncture portion 11 is applied to
The second through-hole 21 and third through-hole 22 are exposed, due to control mechanism 30 in distal end end face of the proximal face of part 111 far from conduit 20
Outer also continuous injection contrast agent, therefore, in proximal end under the action of thrust, the contrast agent of 20 distal internal of conduit at least can be from the
Outflow in three through-holes 22.Even if puncture portion 11 returns to original state, i.e. the distal end disk of disk body 113 and 20 distal end end face of conduit
Inside offset, since disk body 113 can't cover third through-hole 22, therefore contrast agent still can smoothly be flowed out of third through-hole 22
Out, as shown in figure 5, arrow is the flow direction for indicating contrast agent in figure.When by the judgement of the contrast agent that discharges at once puncture at
After function, can contrast agent injection at stop control mechanism 30, withdraw from sting device 100, complete to puncture.
In conclusion when the sting device using the present embodiment carries out tissue penetration, on the one hand, due to the distal end in puncture portion
Portion is part sphere, therefore will not scrape injured tissue in puncture process or wipe sheath inner-wall material off, will not therefore cause thrombus；
On the other hand, after puncturing successfully, the contrast agent in conduit can discharge at once, greatly reduce the usage amount and puncture of contrast agent
Time, safety are higher.
Embodiment two
The sting device of the present embodiment is roughly the same with the structure of sting device 100 of embodiment one, and difference only exists
In the structure of distal end of catheter end face and the structure in puncture portion.As shown in Figure 6 and Figure 7, the distal end end face of conduit 50 is provided only with confession
The first through hole 51 that the connector 412 in puncture portion 41 passes through.Radial through-hole 414 and 415 there are two being set on connector 412, and
One axially extending bore 416.Radial through-hole runs through the outer surface of connector 412, and axially extending bore 416 is set between two radial through-hole
And two radial through-hole of connection.The distance between radial through-hole 414 and 415 is greater than the axial width of 50 distal end end face of conduit, makes
Obtaining contrast agent can be flowed out from distal radial through-hole 414 after the inflow of radial through-hole 415 proximally by axially extending bore 416 again.
Different from the sting device of embodiment one, disk body 413 of the sting device of the present embodiment in puncture portion 41 is mobile simultaneously towards distal end
After the contacted inner surfaces of the distal end end face of conduit 50, even if injecting contrast agent in persistent guide pipe 50, contrast agent will not be from
Conduit 50 distally flows out.
When being punctured using the sting device of the present embodiment, the puncture of the sting device of operating procedure and embodiment one is walked
It is rapid roughly the same.Before success punctures, due to by the blocking organized, the radial through-hole 415 and conduit 50 of the proximal end of connector 412
Inside connection, into conduit 50 inject contrast agent when, contrast agent can also be flowed into the axially extending bore 416 and diameter of connector 412
Into through-hole 414 and 415.But due to keeping out for tissue, connector 412 is still contained in conduit 50, and therefore, contrast agent is not
It can be flowed out out of conduit.After puncturing successfully, puncture portion 41 is mobile towards distal end under the thrust of interconnecting piece 42, on connector 412
Radial through-hole 414 close to distal end is showed out from the distal end of conduit 50, so that contrast agent is also flowed out from catheter interior, such as Fig. 8
It is shown.Under the continuing to press on of connector 42, the disk body 413 in puncture portion 41 it is mobile towards distal end and with 50 distal end end face of conduit
Contacted inner surfaces, the radial through-hole 415 on connector 412 close to proximal end are no longer connected to inside conduit 50, and contrast agent can not be after
It is continuous to flow into radial through-hole 415, so that also there is no contrast agent outflows for 50 distal end of conduit, as shown in Figure 9.Thus it can determine whether to wear
Thorn is completed, and sting device is recalled.
When being punctured using the sting device of the present embodiment, when disk body and the distal end of catheter end face inner surface phase in puncture portion
No longer persistently have contrast agent outflow after supporting, at once can this judgement puncture successfully, and contrast agent usage amount is less, more pacifies
Entirely.
It is understood that above-mentioned specific embodiment is only part preferred embodiment, not limitation of the present invention, this
Field technical staff can do simple replacement to part-structure according to actual needs, without departing from the inventive concept of the premise
The unsubstantiality that makes changes within that scope of the present invention, and the scope of the present invention is subject to claim.
Claims (9)
1. a kind of sting device, including conduit and piercing mechanism, the piercing mechanism part is set to inside the distal end of catheter,
Be characterized in that, the piercing mechanism includes puncture portion, interconnecting piece and fixed part, the fixed part be set in the conduit and with institute
Conduit is stated to be fixedly connected, puncture portion part be set to the distal end of catheter inside, the puncture portion by the interconnecting piece with
The fixed part is connected, and the interconnecting piece includes elastic component, and the puncture portion can be opposite under the elastic force effect of the interconnecting piece
It is moved axially in the conduit to distal end.
2. sting device according to claim 1, which is characterized in that the fixed part is set to inside the distal end of catheter,
The fixed part is column structure and is equipped with first through hole, and the first through hole runs through the distal end end face and proximal end of the fixed part
End face.
3. sting device according to claim 2, which is characterized in that the puncture portion includes puncture component and connector, institute
It states puncture component to be connected with the connector distal end, the connector is movably contained in the conduit, and the puncture component is portion
Bulb separation body.
4. sting device according to claim 3, which is characterized in that the distal end of catheter end face is equipped with the second through-hole, institute
The second through-hole is stated through the distal end of catheter end face, and the aperture of second through-hole is less than the internal diameter of the conduit and described
The radius of puncture component proximal face, the connector are movably contained in the conduit by second through-hole.
5. sting device according to claim 4, which is characterized in that the connector includes cylinder and disk body, the disk
The distal end disk of body is connected with the proximal end of the cylinder, and the outer diameter of the cylinder is not more than the aperture of second through-hole, described
Disk body is contained in the conduit, and the radius of the distal end disk of the disk body is greater than the aperture of second through-hole.
6. sting device according to claim 5, which is characterized in that the distal end of catheter end face is additionally provided with third through-hole,
The puncture component can cover second through-hole and the third through-hole when proximally facing mobile；The puncture portion is moved towards distal end
When dynamic, the disk body only covers second through-hole.
7. sting device according to claim 5, which is characterized in that radial through-hole and one there are two being set on the cylinder
Axially extending bore, the axially extending bore is set between described two radial through-hole and the described two radial through-hole of connection.
8. sting device according to claim 7, which is characterized in that the distance between described two radial through-hole are greater than institute
State the axial width of distal end of catheter end face.
9. sting device according to any one of claim 1 to 8, which is characterized in that the interconnecting piece is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811625646.3A CN109700507A (en) | 2018-12-28 | 2018-12-28 | Sting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811625646.3A CN109700507A (en) | 2018-12-28 | 2018-12-28 | Sting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109700507A true CN109700507A (en) | 2019-05-03 |
Family
ID=66258040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811625646.3A Pending CN109700507A (en) | 2018-12-28 | 2018-12-28 | Sting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109700507A (en) |
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