CN210990937U - Prosthetic heart valve delivery device - Google Patents
Prosthetic heart valve delivery device Download PDFInfo
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- CN210990937U CN210990937U CN201921285287.1U CN201921285287U CN210990937U CN 210990937 U CN210990937 U CN 210990937U CN 201921285287 U CN201921285287 U CN 201921285287U CN 210990937 U CN210990937 U CN 210990937U
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- outer sheath
- delivery device
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Abstract
The utility model relates to the technical field of medical equipment, concretely relates to artificial heart valve delivery device, aim at solving the most more complicated of delivery device structure among the prior art, the operation is more complicated, is difficult for realizing the problem of quick accurate positioning release, and its technical essential lies in including outer sheath pipe, propelling movement pipe and valve subassembly, valve subassembly and propelling movement pipe are placed inside outer sheath pipe, the valve subassembly is located the distal part of propelling movement pipe, propelling movement pipe can be axial motion in outer sheath pipe, and the propelling movement pipe extends outer sheath pipe near-end; the inner side wall of the outer sheath tube is connected with a convex block in a sliding mode, the convex block is connected with a spring for driving the convex block to move, a groove matched with the convex block is formed in one end, close to the pushing tube, of the valve component, and the convex block is connected with a driving component for driving the valve component to exit from the groove. The utility model discloses simple structure, convenient to use, the release success rate is high.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to prosthetic heart valve delivers device.
Background
The heart is an important organ of the human body and provides circulation for blood of the human body, and four groups of valves are arranged inside the heart and control the direction of blood flow, wherein the valve between the left atrium and the left ventricle is a mitral valve, the valve between the right atrium and the right ventricle is a tricuspid valve, the valve between the left ventricle and the aorta is an aortic valve, and the valve between the right ventricle and the pulmonary artery is a pulmonary valve. The traditional treatment method for heart diseases is chest opening and valve replacement operation, the treatment means is mature and has definite effect, but the trauma is large in the operation process and a plurality of contraindications are provided. The recovery time of the patient after the operation is long, the problems that the anticoagulation drug needs to be taken for a long time after the valve is replaced, the valve use time is short and the like are still not overcome.
The minimally invasive chemical surgery technology is continuously developed, the artificial heart valve can be introduced into the body by a catheter, the operation does not need to be performed through a minimally invasive intervention method, the wound is small, the recovery is fast, a better solution is provided for elderly patients or patients who cannot tolerate conventional surgery, and the minimally invasive chemical surgery technology has good development and application prospects.
At present, the traditional operation steps comprise the steps of puncture through strands, guide wire pushing, feeding into a conveying sheath tube along the guide wire, withdrawing from the guide wire, pushing a plugging umbrella by a pusher to reach a defect part for releasing, completing a plugging process, and withdrawing the pusher afterwards. This structure has not only restricted that the push rod must have anti-torsion characteristic, has still restricted to have to be provided with corresponding internal thread structure on the stopper and cooperates, leads to the structural complexity to increase, is unfavorable for the operation.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the present invention lies in overcoming the defects that the structure of the delivery device is mostly complex, the operation is complex, and the quick and accurate positioning and releasing are not easy to realize in the prior art, thereby providing a delivery device for artificial heart valves.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a prosthetic heart valve delivery device comprising an outer sheath, a pusher tube, and a valve assembly, the valve assembly and pusher tube being positioned inside the outer sheath, the valve assembly being located at a distal end portion of the pusher tube, the pusher tube being axially movable within the outer sheath, and the pusher tube extending out of a proximal end of the outer sheath;
the inner side wall of the outer sheath tube is connected with a convex block in a sliding mode, the convex block is connected with a spring for driving the convex block to move, a groove matched with the convex block is formed in one end, close to the pushing tube, of the valve component, and the convex block is connected with a driving component for driving the valve component to exit from the groove.
Optionally, a side of the projection away from the spring is provided with a slope facing the pushing pipe.
Optionally, the driving and reversing assembly comprises a cross rod connected to the lug, one end of the cross rod, which is far away from the lug, extends out of the outer sheath tube, and the outer end of the cross rod is connected with a limiting block with a diameter larger than that of the cross rod.
Optionally, the outer sheath proximal end and/or the push tube proximal end are provided with a handle.
Optionally, at least one of the outer sheath tubes is provided with a hemostatic member located in a gap between the inner wall of the outer sheath tube and the outer wall of the pusher tube.
Optionally, the proximal end of the outer sheath tube is further provided with an evacuation tube, the evacuation tube is communicated with a gap between the outer sheath tube and the pushing tube, and air in the delivery device can be evacuated through the evacuation tube.
Optionally, the outer sheath tube outer surface is provided with a scale extending axially therealong.
Optionally, the distal head of the outer sheath and/or the pushing tube is a soft head.
The utility model discloses technical scheme has following advantage:
1. the utility model discloses a prosthetic heart valve delivery device, rely on and drive the subassembly and take the lug out, the spring is in compression state this moment, it makes valve subassembly get into in the outer sheath pipe to the near-end drive propelling movement pipe, then loosen the lug, under the spring reset action, the lug card is located and is realized fixing in valve subassembly's the recess, accomplish valve subassembly's device, and then insert the outer sheath pipe that has valve subassembly through the intervention mode and preset release position, promote the propelling movement pipe to the distal end at last and make valve subassembly spill outer sheath pipe distal end, make valve subassembly unfold in preset position under self elastic effect, and break away from with the propelling movement pipe, realize valve subassembly's quick accurate release.
2. The utility model discloses a prosthetic heart valve delivery device, the setting on inclined plane when valve subassembly card is in outer sheath pipe, makes the propelling movement pipe along the automatic lug that moves back of inclined plane, need not to make the lug move back the outer sheath pipe with moving back the subassembly.
3. The utility model discloses a prosthetic heart valve delivers device, the setting of stopper, when the lug is located the recess, stopper laminating outer sheath pipe outer wall to the stopper prevents the infiltration of the link that slides of blood water from horizontal pole and outer sheath pipe limitedly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a prosthetic heart valve delivery device according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of an outer sheath portion of a prosthetic heart valve delivery device according to an embodiment of the present invention.
Description of reference numerals:
1. an outer sheath tube; 2. pushing the pipe; 3. a valve assembly; 31. a bump; 32. a spring; 33. a groove; 34. a bevel; 4. a driving and retreating component; 41. a cross bar; 42. a limiting block; 5. a handle; 6. a hemostatic member; 7. emptying the pipe; 8. and (4) a scale.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A prosthetic heart valve delivery device, as shown in fig. 1 and 2, comprises an outer sheath 1, a push tube 2 and a valve assembly 3, wherein the valve assembly 3 and the push tube 2 are disposed inside the outer sheath 1, the valve assembly 3 is located at a distal end portion of the push tube 2, the push tube 2 can move axially in the outer sheath 1, and the push tube 2 extends out of a proximal end of the outer sheath 1, so that the valve assembly 3 can leak out of the distal end of the outer sheath 1 by driving the push tube 2 distally, and the valve assembly 3 can enter the outer sheath 1 by driving the push tube 2 proximally and form a space for accommodating the valve assembly 3 in a lumen at the distal end of the outer sheath 1. In addition, the inner side wall of the outer sheath 1 is connected with a projection 31 in a sliding manner, the projection 31 is connected with a spring 32 for driving the projection 31 to move, one end of the valve component 3 close to the push pipe 2 is provided with a groove 33 matched with the projection 31, the projection 31 is connected with a driving and withdrawing component 4 for driving the projection 31 to withdraw from the groove 33, the projection 31 is taken out by the driving and withdrawing component 4, the spring 32 is in a compressed state at the moment, the valve component 3 enters the outer sheath 1 by driving the push pipe 2 towards the near end, then the projection 31 is released, the projection 31 is clamped in the groove 33 of the valve component 3 to realize fixation under the reset action of the spring 32, the device of the valve component 3 is completed, the outer sheath 1 provided with the valve component 3 is inserted into a preset release position by an intervention mode, finally the push pipe 2 is pushed towards the far end to enable the valve component 3 to leak out of the far end of the outer sheath 1, so that the, and is separated from the push pipe 2, so that the valve assembly can be quickly and accurately released.
As shown in fig. 2, the side of the projection 31 away from the spring 32 is provided with a slope 34 facing the pushing tube 2, so that when the valve assembly 3 is clamped in the sheath tube 1, the pushing tube 2 automatically drives the projection 31 along the slope, and the projection 31 does not need to be driven out of the sheath tube 1 by the driving and withdrawing assembly 4.
As shown in fig. 2, the driving and reversing assembly 4 includes a cross bar 41 connected to the protrusion 31, the spring 32 is sleeved outside the cross bar 41, and one end of the cross bar 41 far from the protrusion 31 extends to the outside of the sheath tube 1, so that the cross bar 41 is pulled outwards, the spring 32 is compressed, the protrusion 31 withdraws from the inner cavity of the sheath tube 1, the outer end of the cross bar 41 is connected with a limiting block 42 with a diameter larger than that of the cross bar 41, and the limiting block 42 does not influence the protrusion 31 to extend into the inner cavity of the sheath tube 1. When the protrusion 31 is located in the groove 33, the stopper 42 is attached to the outer wall of the sheath tube 1, so that the stopper 42 prevents the blood from permeating from the sliding connection end of the cross bar 41 and the sheath tube 1.
As shown in fig. 1, the proximal end of the sheath tube 1 and/or the proximal end of the pushing tube 2 are/is provided with a handle 5, so that the handle 5 is arranged to facilitate grasping and pushing and pulling operations. Alternatively, the handle 5 may be disposed on the sidewall of the outer sheath 1, or may be disposed coaxially with the outer sheath 1 and may be fitted over the pushing tube 2.
As shown in fig. 1, at least one of the sheath tubes 1 is provided with a hemostatic member 6. in this embodiment of the present invention, the hemostatic member 6 is a hemostatic ring, and the hemostatic member 6 is disposed in the gap between the inner wall of the sheath tube 1 and the outer wall of the pushing tube 2, so as to further prevent blood from leaking out of the gap during transportation.
As shown in fig. 1, the proximal end of the outer sheath 1 is further provided with an evacuation tube 7, the evacuation tube 7 is communicated with the gap between the outer sheath 1 and the pushing tube 2, and air in the delivery device can be evacuated through the evacuation tube 7, so that the resistance for driving the pushing tube 2 is reduced, and the introduction of excessive air when the pushing tube 2 is repeatedly pushed and pulled due to the adjustment of the release position is avoided.
As shown in fig. 1, the outer surface of the sheath tube 1 is provided with a scale 8 extending along the axial direction thereof, so that the insertion depth of the sheath tube 1 can be conveniently judged, and the accurate positioning can be conveniently performed.
As shown in figure 1, the distal end head of the outer sheath tube 1 and/or the pushing tube 2 is a soft head, and unnecessary damage to surrounding tissues in the conveying process is avoided by adopting the soft head.
The prosthetic heart valve delivery device: the convex block 31 is taken out by means of the driving and withdrawing assembly 4, the spring 32 is in a compressed state at the moment, the valve assembly 3 enters the outer sheath tube 1 by driving the pushing tube 2 towards the near end, then the convex block 31 is loosened, under the reset action of the spring 32, the convex block 31 is clamped in the groove 33 of the valve assembly 3 to realize fixation, the device of the valve assembly 3 is completed, the outer sheath tube 1 provided with the valve assembly 3 is inserted into a preset release position in an intervention mode, and finally the pushing tube 2 is pushed towards the far end to enable the valve assembly 3 to be leaked out of the far end of the outer sheath tube 1, so that the valve assembly 3 is unfolded at the preset position under the elastic action of the valve assembly 3 and separated from the pushing tube 2, and the valve assembly is quickly and accurately released.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (8)
1. A prosthetic heart valve delivery device, comprising an outer sheath (1), a push tube (2) and a valve assembly (3), wherein the valve assembly (3) and the push tube (2) are placed inside the outer sheath (1), the valve assembly (3) is located at the distal end portion of the push tube (2), the push tube (2) is axially movable in the outer sheath (1), and the push tube (2) extends out of the proximal end of the outer sheath (1);
the inner side wall of the sheath tube (1) is connected with a convex block (31) in a sliding mode, a spring (32) for driving the convex block (31) to move is connected to the convex block (31), one end, close to the pushing tube (2), of the valve component (3) is provided with a groove (33) matched with the convex block (31), and the convex block (31) is connected with a driving component (4) for driving the valve component to exit from the groove (33).
2. A prosthetic heart valve delivery device according to claim 1, wherein the side of the projection (31) remote from the spring (32) is provided with a ramp (34) facing towards the push tube (2).
3. The delivery device for the prosthetic heart valve according to claim 2, wherein the driving and retreating assembly (4) comprises a cross bar (41) connected to the projection (31), one end of the cross bar (41) far away from the projection (31) extends out of the sheath (1), and a stopper (42) with a diameter larger than that of the cross bar (41) is connected to the outer end of the cross bar (41).
4. A prosthetic heart valve delivery device according to claim 1, wherein the sheath (1) proximal end and/or the push tube (2) proximal end is provided with a handle (5).
5. A prosthetic heart valve delivery device according to claim 1, wherein at least one of the outer sheaths (1) is provided with a haemostatic component (6), the haemostatic component (6) being located in a gap between the inner wall of the outer sheath (1) and the outer wall of the pusher tube (2).
6. A prosthetic heart valve delivery device according to claim 1, wherein the proximal end of the sheath (1) is further provided with an evacuation tube (7), the evacuation tube (7) is communicated with the gap between the sheath (1) and the pushing tube (2), and air in the delivery device can be evacuated through the evacuation tube (7).
7. A prosthetic heart valve delivery device according to claim 1, wherein the outer sheath (1) outer surface is provided with a scale (8) extending axially therealong.
8. A prosthetic heart valve delivery device according to claim 1, wherein the distal head of the sheath (1) and/or the push tube (2) is soft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285287.1U CN210990937U (en) | 2019-08-08 | 2019-08-08 | Prosthetic heart valve delivery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285287.1U CN210990937U (en) | 2019-08-08 | 2019-08-08 | Prosthetic heart valve delivery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210990937U true CN210990937U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921285287.1U Active CN210990937U (en) | 2019-08-08 | 2019-08-08 | Prosthetic heart valve delivery device |
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| Country | Link |
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| CN (1) | CN210990937U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262080A (en) * | 2021-06-25 | 2021-08-17 | 广东脉搏医疗科技有限公司 | Prosthetic valve delivery system |
| CN115153958A (en) * | 2022-04-21 | 2022-10-11 | 上海翰凌医疗器械有限公司 | A delivery system for a valve repair device |
-
2019
- 2019-08-08 CN CN201921285287.1U patent/CN210990937U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262080A (en) * | 2021-06-25 | 2021-08-17 | 广东脉搏医疗科技有限公司 | Prosthetic valve delivery system |
| CN113262080B (en) * | 2021-06-25 | 2023-12-22 | 广东脉搏医疗科技有限公司 | Prosthetic valve delivery system |
| CN115153958A (en) * | 2022-04-21 | 2022-10-11 | 上海翰凌医疗器械有限公司 | A delivery system for a valve repair device |
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