CN114631918A

CN114631918A - Adjustable bracket system

Info

Publication number: CN114631918A
Application number: CN202210247066.5A
Authority: CN
Inventors: 李延辉; 吴新; 何晓健; 张文娟
Original assignee: Jiangsu Brightness Medical Devices Co ltd
Current assignee: Jiangsu Brightness Medical Devices Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-06-17

Abstract

The invention discloses an adjustable bracket system, and belongs to the technical field of medical instruments. Mainly include support and recovery line, be provided with the stop part on the support, the stop part is used for hugging closely in the inner wall of tissue after the release expansion, the recovery line includes open-loop type's interlude section and two sections of deviating from that are located interlude section two respectively, the section of alternating surrounds on the stop part along the circumference of support to when dragging the section of deviating from of recovery line, make the section of alternating break away from the support gradually and shrink and reduce, the section shrink of alternating is in order to drive the inside shrink of stop part. The adjustable bracket system can still adjust the position of the bracket after the blocking part in the bracket is released.

Description

Adjustable bracket system

Technical Field

The invention relates to the technical field of medical instruments, in particular to an adjustable bracket system.

Background

Treatment with stents has become widespread, for example: the stent is placed in a stenosed portion or occluded portion generated in a body such as a tubular organ or a body cavity such as a bile duct, a ureter, a trachea, a blood vessel, or an esophagus, and the stent is placed in a portion where an aneurysm is generated to prevent the stent from rupturing or the like, and the stenosed portion or occluded portion is expanded to facilitate the flow of bile, blood, or the like.

Since the stent is positioned and left in the affected part of the body tissue and sometimes misplaced, a conventional stent is constructed such that an expanded part expanded in a trumpet shape or a stopper expanded in a dumbbell shape is provided at an end of the stent, and the stopper is brought into close contact with the inner wall of the body tissue to suppress the dislocation by an anchoring effect. However, when the stent is used, once the blocking part is released and opened, the blocking part is tightly attached to the tissues in the body, so that the position of the stent is difficult to adjust, and the difficulty of operation is increased.

It is therefore desirable to provide an adjustable mounting system to address the above problems.

Disclosure of Invention

Based on the above problems in the prior art, an object of the present invention is to provide an adjustable bracket system, which can adjust the position of the bracket after the blocking portion in the bracket is released.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a support system with adjustable, includes support and recovery line, be provided with the barrier on the support, the barrier is used for hugging closely in the inner wall of tissue after the release expansion, the recovery line includes open-loop type's interlude section and is located respectively two of interlude section two deviate from the section, the interlude section is followed the circumference of support encloses in on the barrier, in order dragging when the section of deviating from of recovery line, make the interlude section breaks away from the support gradually and the shrink reduces, the shrink of interlude section is in order to drive the inside shrink of barrier.

Further, the penetrating segments of the recovery wire are wound at most one turn in the circumferential direction of the blocking portion in the stent while alternately penetrating between the inside of the stent and the outside of the stent.

Further, the penetrating segments of the recovery wire are wound around the circumference of the blocking part in the stent for more than one turn, while the penetrating segments alternately penetrate between the inside of the stent and the outside of the stent.

Furthermore, the adjustable stent system further comprises an auxiliary line, the auxiliary line surrounds and is connected to the blocking part of the stent, a plurality of inner side sections are arranged on the auxiliary line and on the inner side of the stent, the inner side sections are distributed at intervals along the circumferential direction of the stent, the penetrating section of the recovery line surrounds at most one circle along the circumferential direction of the blocking part in the stent, or the penetrating section surrounds more than one circle along the circumferential direction of the blocking part, and in addition, the penetrating section is penetrated and inserted into the inner side sections.

Further, the adjustable bracket system further comprises a central tube, the central tube is used for extending into the bracket, and the interior of the central tube is used for allowing the separation section of the recovery line to penetrate into the bracket and extend to the outside of the bracket, so that the separation section is pulled to shrink the penetration section.

Furthermore, an inlet is formed in the central tube, and the inlet is used for allowing the recovery line to penetrate into the central tube.

Further, the adjustable bracket system also comprises an outer tube, the central tube is arranged in the outer tube in a penetrating mode, and the inner cavity of the outer tube is used for placing the contracted bracket, so that the bracket is pulled out of the outer tube to be released and opened when the outer tube slides relative to the central tube in the axial direction.

Further, a membrane is arranged on the support.

Further, the film is coated on the outer side of the bracket.

Further, the blocking part is a cylindrical structure formed by protruding in the radial direction of the support.

The beneficial effects of the invention are: the invention provides an adjustable stent system, wherein a recovery line comprises an open-loop type insertion section and two releasing sections respectively positioned at two ends of the insertion section, the insertion section surrounds the blocking part along the circumferential direction of the stent, so that when the releasing section in the recovery line is dragged, the insertion section is gradually separated from the stent and shrunk and reduced, the insertion section is shrunk to drive the blocking part to shrink inwards so as to separate from the inner wall of a tissue, so that the stent is displaced, after the blocking part on the stent is released, the recovery line can be dragged to drive the blocking part to shrink inwards so as to separate from the inner wall of the tissue, after the anchoring effect is lost, the moving resistance of the stent is effectively reduced, and the position of the stent in the tissue can be adjusted, namely after the blocking part in the stent is released, the position of the stent of the adjustable stent system can still be adjusted.

Drawings

The invention is further illustrated by the following figures and examples.

In the figure:

FIG. 1 is a general schematic view of an adjustable support system according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of an adjustable support system according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line E-E of FIG. 2;

FIG. 4 is a top view of FIG. 2;

FIG. 5 is a schematic view of a portion of an adjustable support system according to a second embodiment of the present invention;

FIG. 6 is a cross-sectional view taken in the direction F-F of FIG. 5;

FIG. 7 is a top view of FIG. 5;

FIG. 8 is a schematic view of a portion of an adjustable bracket system according to a third embodiment of the present invention;

FIG. 9 is a sectional view taken in the direction G-G of FIG. 8;

fig. 10 is a top view of fig. 8.

Wherein, in the figures, the respective reference numerals:

1. a support; 11. a film; 12. a blocking portion.

2. Recovering the wire; 21. inserting sections; 22. and (5) removing the section.

3. An auxiliary line; 31 an inner section; 32. an outboard section.

4. A central tube; 41. an inlet; 42. an outlet; 5. an outer tube; 51. and (4) a window.

6. A bracket imbedding device.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and only illustrates the basic structure of the present invention in a schematic manner, and therefore it only shows the constitution related to the present invention.

Example one

Referring to fig. 1 to 4, a first embodiment of the present invention provides an adjustable stent system, including a stent 1 and a recovery thread 2, where the stent 1 is provided with a blocking portion 12, the blocking portion 12 is used to cling to an inner wall of a tissue after being released and expanded, the recovery thread 2 includes an open-loop type insertion segment 21 and two detachment segments 22 respectively located at two ends of the insertion segment 21, the insertion segment 21 surrounds the blocking portion 12 along a circumferential direction of the stent 1, so that when the detachment segments 22 in the recovery thread 2 are pulled, the insertion segment 21 gradually detaches from the stent 1 and shrinks to be reduced, and the insertion segment 21 shrinks to drive the blocking portion 12 to shrink inward so as to detach from the inner wall of the tissue, so as to displace the stent 1. Therefore, according to the technical scheme, after the blocking part 12 on the bracket 1 is released, the recovery wire 2 can be pulled to drive the blocking part 12 to contract inwards so as to be separated from the inner wall of the tissue, the moving resistance of the bracket 1 is effectively reduced after the anchoring effect is lost, and the position of the bracket 1 in the tissue can be adjusted, namely the position of the bracket can still be adjusted after the blocking part 12 in the bracket 1 is released.

In some embodiments, the blocking portion 12 is a cylindrical structure formed by one end of the stent 1 and protruding in the radial direction, so that when the blocking portion 12 is released and opened, it is embedded in the inner wall of the tissue to anchor the stent 1. It will be appreciated that the blocking portion 12 may also be a spherical structure, a flared structure, etc. In other embodiments, not shown, the holder 1 is provided with stops 12 at both ends.

In some embodiments, as shown in fig. 2, the stent 1 is further provided with a membrane 11 to prevent mucosal epithelial cells from growing into and wrapping the pores of the stent 1, or to block the perforation of the inner wall of the tissue through the membrane 11. Specifically, the membrane 11 is covered on the outer side of the bracket 11, and it is understood that the membrane 11 may be disposed on the inner side of the bracket 11 or connected to the bracket 1 in other forms. In the present embodiment, the membrane 11 is provided on the stent 1 in a full-covered manner, but it is understood that the membrane 11 may be provided at a partial position of the stent 1, or the stent 1 may not be provided with the membrane 11.

As shown in fig. 4, the penetrating segments 21 of the recovery wire 2 are wound at most one turn in the circumferential direction of the blocking portion 12 in the stent 1 while the penetrating segments 21 are alternately penetrated between the inside of the stent 1 and the outside of the stent 1. Thereby when the section 22 that deviates from of interlude section 21 two receives the tractive power, can make interlude section 21 break away from support 1 by two gradually to make interlude section 21 shrink gradually and reduce, the interlude section 21 of shrink causes the external diameter of blocking part 12 to reduce, makes blocking part 12 break away from the inner wall of tissue, so that shift support 1. In particular, the penetrating segments 21 penetrate the membrane 11 of the stent 1, it being understood that in other embodiments not shown, the penetrating segments 21 may also penetrate the pores of the stent 1. In addition, since the insertion segment 21 of the recovery wire 2 is inserted to surround the stent 1, the insertion segment 21 can be selectively provided at any position on the stopper 12 so that the stopper 12 can be contracted to a desired state.

As shown in fig. 2 and 3, in some embodiments, the adjustable stent system further comprises a central tube 4, the central tube 4 is used for extending into the stent 1, and the inside of the central tube 4 is used for allowing the prolapsed segment 22 to penetrate and extend out of the body, so that the prolapsed segment 22 is pulled to shrink the penetrating segment 21. Therefore, when the separating sections 22 at the two ends of the penetrating section 21 are drawn and gradually drawn into the central tube 4, the length of the penetrating section 21 is gradually reduced, so that the annular penetrating section 21 is gradually reduced, and the reduced penetrating section 21 causes the outer diameter of the blocking part 12 to be reduced, so that the blocking part 12 is separated from the inner wall of the tissue.

As shown in fig. 3, in some embodiments, the central tube 4 is provided with an inlet 41, the inlet 41 and the penetrating segment 21 of the recycling line 2 are located on the same radial plane of the stent 1, and the escaping segment 22 of the recycling line 2 penetrates into the central tube 4 through the inlet 41. Therefore, according to the above technical solution, in the process that the stripping section 22 in the recovery line 2 is received into the central tube 4 through the inlet 41, since the penetrating section 21 connected to the stent 1 always moves on the plane, the stent 1 does not have a driving force in the axial direction of the stent 1, and thus when the recovery line 2 is pulled, the position of the stent 1 in the axial direction is not deviated, and the position of the stent 1 needs to be adjusted for many times. In particular, the inlet 41 is provided at an end face of the central tube 4 corresponding to the holder 1, it being understood that in other embodiments not shown in the figures, the inlet 41 may also be provided at a side wall of the central tube 4.

In addition, through foretell technical scheme, in the in-process of drawing recovery line 2 shrink support 1, because center tube 4 wears to establish and exists in support 1, even if the resistance that produces is different with each part contact of support 1 to the section 21 that alternates in recovery line 2, makes the speed of each department's shrink inconsistent on support 1, support 1 can finally be shrunk and wrap up on center tube 4 to guaranteed that support 1 can finally be fully shrunk, so that support 1 is in internal adjustment position.

As shown in FIG. 1, in some of the embodiments, the adjustable stent system further comprises an outer tube 5, a central tube 4 is arranged in the outer tube 5 in a penetrating way, and the inner cavity of the outer tube 5 is close to the most end position and used for placing the stent 1 which is contracted, so that the stent 1 can be pulled out from the outer tube 5 to be released and opened when the outer tube 5 slides relative to the central tube 4 along the axial direction. It can be understood that, when the stent 1 is not completely released from the outer tube 5 and the stopper 12 in the stent 1 has been completely released, the stopper 12 in the stent 1 may be contracted and reduced by pulling the recovery wire 2 so as to adjust the position of the stent 1 by moving the center tube 4 and the outer tube 5, or, after the stent 1 is completely released from the outer tube 5, the stopper 12 may be contracted by pulling the recovery wire 2 and the position of the stent 1 may be adjusted by moving the center tube 4.

In order to facilitate the outer tube 5 to slide axially relative to the central tube 4 to control the stent 1 to be released in the body, as shown in fig. 1, in some embodiments, the adjustable stent system further includes a stent introducer 6, the outer tube 5 is mounted on the stent introducer 6, the central tube 4 is also mounted on the stent introducer 6 and is inserted into the outer tube 5, the stent introducer 6 is used to control the outer tube 5 to slide relative to the central tube 4, and the escaping section 22 of the recycling line 2 protrudes out of the body after penetrating through the central tube 4. It should be understood that the structure of the stent introducer 6 is described in the application No.: CN202111045105.5 discloses a stent implantation device, which will not be described herein too much. Therefore, according to the technical scheme, firstly, the contracted stent 1 is plugged into the outer tube 5, the recovery wire 2 penetrates through the central tube 4 and is positioned outside the body, the stent 1 is sent to a position to be released in a human body through the stent inserter 6, the stent inserter 6 is controlled to enable the outer tube 5 to slide relative to the central tube 4, the stent 1 is released and opened in the process of gradually separating from the outer tube 5, and when the position of the stent 1 needs to be adjusted, the separation section 22 of the recovery wire 1 positioned outside the body is drawn, the insertion section 21 is gradually collected into the central tube 4 so as to be contracted and reduced, the contraction and reduction of the insertion section 21 drives the blocking part 12 on the stent 1 to contract and reduce inwards, so that the blocking part 12 is separated from the inner wall of the tissue, the stent 1 is separated from the inner wall of the tissue or the mutual resistance is reduced, and then the position of the stent 1 is adjusted by moving the stent inserter 6.

As shown in fig. 1, in some embodiments, the central tube 4 is provided with an outlet 42 for extending the stripping section 22 of the recycling line 2 from the inside of the central tube 4 to the outside of the body, so as to facilitate the pulling of the recycling line 2. Specifically, the outlet 42 is disposed on the side wall of the central tube 4, and a window 51 is disposed on the outer tube 5 corresponding to the outlet 42, so that the pull-out section 22 extending out of the outlet 42 passes through the window 51.

It will be appreciated that in other embodiments, the outlet 42 of the central tube 4 opens onto the end face of the trailing end of the central tube 4, and the window 51 is provided on the end face of the outer tube 5 adjacent to the outlet 42.

Example two

As shown in fig. 5 to 7, the adjustable stent system provided in the second embodiment differs from the adjustable stent system provided in the first embodiment only in the structure of the recycling line 2, which is described as follows:

as shown in fig. 7, the penetration segments 21 of the recovery wires 2 are wound more than one turn in the circumferential direction of the blocking portion 12 in the stent 1 while the penetration segments 21 are alternately penetrated between the inside of the stent 1 and the outside of the stent 1. Therefore, when the pulling force is applied to the pulling sections 22 at the two ends of the penetrating section 21, the penetrating section 21 is gradually pulled away from the stent 1 from the two ends, so that the penetrating section 21 is gradually shrunk and reduced, and the shrunk penetrating section 21 causes the outer diameter of the blocking part 12 to be reduced, so that the blocking part 12 is pulled away from the inner wall of the tissue.

EXAMPLE III

As shown in fig. 8 to 10, the adjustable stent system provided in the third embodiment is different from the adjustable stent system provided in the first embodiment only in the structure of the recycling line 2, which is described as follows:

as shown in fig. 10, in some embodiments, the adjustable stent system further includes an auxiliary thread 3, the auxiliary thread 3 surrounds and is connected to the blocking portion 12 of the stent 1, a plurality of inner sections 31 are disposed on the auxiliary thread 3 and inside the stent 1, the inner sections 31 are spaced apart from each other in the circumferential direction of the stent 1, the penetrating section 21 of the recycling thread 2 surrounds at most one turn in the circumferential direction of the blocking portion 12 in the stent 1, or the penetrating section 21 surrounds more than one turn in the circumferential direction of the blocking portion 12, and in addition, the penetrating section 21 penetrates through the plurality of inner sections 31 on the auxiliary thread 3. Therefore, when the pulling force is applied to the pulling sections 22 at the two ends of the penetrating section 21, the penetrating section 21 is gradually separated from the auxiliary thread 3 from the two ends, so that the penetrating section 21 is gradually shrunk and reduced, and the shrunk penetrating section 21 causes the outer diameter of the blocking part 12 connected with the auxiliary thread 3 to be reduced, so that the blocking part 12 is separated from the inner wall of the tissue. And because the recovery line 2 is connected with the auxiliary line 3 in an inserting way, when the recovery line 2 is dragged to reduce the inserting section 21, the resistance on the inserting section 21 is small, and jamming is not easy to occur. Specifically, the auxiliary threads 3 are connected with each other after encircling a whole circle along the circumferential direction of the blocking part 12 in the stent 1, the auxiliary threads 3 are alternately inserted between the inside of the stent 1 and the outside of the stent 1, so that the part of the auxiliary threads 3 on the inner side of the stent 1 forms an inner section 31, and the part of the auxiliary threads 3 on the outer side of the stent 1 forms an outer section 32. It will be understood that in other embodiments not shown in the figures, the auxiliary thread 3 may be wound around the inner side of the stent 1, and the auxiliary thread 3 is intermittently connected and fixed to the inner wall of the stent 1 to form a plurality of inner sections 31 at intervals. In addition, the auxiliary thread 3 can also surround less than one full circle along the circumferential direction of the blocking part 12 in the bracket 1, and the two ends of the auxiliary thread 3 are connected and fixed on the bracket 1; or the auxiliary thread 3 is connected with the two ends of the blocking part 12 in the bracket 1 around the circumference of a plurality of circles.

In light of the foregoing description of preferred embodiments in accordance with the invention, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. An adjustable support system, which is characterized in that: including support and recovery line, be provided with the barrier part on the support, the barrier part is used for hugging closely in the inner wall of tissue after the release expansion, the recovery line includes the interlude section of open-loop type and is located respectively two of interlude section two deviate from the section, the interlude section is followed the circumference of support surround in on the barrier part, in order to drag when deviating from the section of recovery line, make the interlude section breaks away from the support gradually and the shrink reduces, the shrink of interlude section is in order to drive the inside shrink of barrier part.

2. The adjustable bracket system of claim 1, wherein: the penetrating section of the recovery wire surrounds at most one circle along the circumferential direction of the blocking part in the stent, and the penetrating section alternately penetrates between the inside of the stent and the outside of the stent.

3. The adjustable bracket system of claim 1, wherein: the penetrating segments of the recovery wire are wound around more than one turn in the circumferential direction of the blocking part in the stent while alternately penetrating between the inside of the stent and the outside of the stent.

4. The adjustable bracket system of claim 1, wherein: the adjustable bracket system also comprises an auxiliary line, the auxiliary line surrounds and is connected to the blocking part of the bracket, a plurality of inner side sections are arranged on the auxiliary line and positioned on the inner side of the bracket, the inner side sections are distributed at intervals along the circumferential direction of the bracket, the penetrating section of the recovery line surrounds at most one circle along the circumferential direction of the blocking part in the bracket, or the penetrating section surrounds more than one circle along the circumferential direction of the blocking part, and in addition, the penetrating section penetrates and is inserted into the inner side sections.

5. The adjustable bracket system of claim 1, wherein: the adjustable support system further comprises a central tube, the central tube is used for extending into the support, and the separation section of the recovery line penetrates into the support and extends to the outside of the support so as to be convenient for dragging the separation section to shrink the penetration section.

6. The adjustable brace system of claim 5, wherein: the central tube is provided with an inlet, and the inlet is used for the recovery line to penetrate into the central tube.

7. The adjustable bracket system of claim 5, wherein: the adjustable bracket system also comprises an outer tube, the central tube is arranged in the outer tube in a penetrating mode, and the inner cavity of the outer tube is used for placing the contracted bracket so that the bracket can be pulled out of the outer tube to be released and opened when the outer tube slides relative to the central tube in the axial direction.

8. The adjustable brace system of claim 1, wherein: a membrane is arranged on the support.

9. The adjustable brace system of claim 8, wherein: the membrane is coated on the outer side of the bracket.

10. The adjustable bracket system of claim 1, wherein: the blocking part is a cylindrical structure formed by protruding along the radial direction of the bracket.