CN221205787U - Internal drainage short circuit anastomosis stent - Google Patents
Internal drainage short circuit anastomosis stent Download PDFInfo
- Publication number
- CN221205787U CN221205787U CN202322124788.4U CN202322124788U CN221205787U CN 221205787 U CN221205787 U CN 221205787U CN 202322124788 U CN202322124788 U CN 202322124788U CN 221205787 U CN221205787 U CN 221205787U
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- CN
- China
- Prior art keywords
- communication structure
- internal drainage
- anastomosis stent
- drainage short
- circuit
- Prior art date
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- 230000003872 anastomosis Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- 241000238413 Octopus Species 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 208000000197 Acute Cholecystitis Diseases 0.000 description 1
- 208000009663 Acute Necrotizing Pancreatitis Diseases 0.000 description 1
- 206010063659 Aversion Diseases 0.000 description 1
- 206010008614 Cholecystitis acute Diseases 0.000 description 1
- 206010063045 Effusion Diseases 0.000 description 1
- 206010023129 Jaundice cholestatic Diseases 0.000 description 1
- 201000005267 Obstructive Jaundice Diseases 0.000 description 1
- 206010033635 Pancreatic pseudocyst Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 201000003229 acute pancreatitis Diseases 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000002612 cardiopulmonary effect Effects 0.000 description 1
- 201000001352 cholecystitis Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 208000003243 intestinal obstruction Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
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- Media Introduction/Drainage Providing Device (AREA)
- Prostheses (AREA)
Abstract
The utility model discloses an internal drainage short circuit anastomosis stent, which belongs to the field of medical appliances and comprises the following components: a communication structure for forming a passage penetrating at both ends thereof in the obstructed area; the support leg is provided with a furled state in the process of placement and an expanded state after placement is completed, and the transition from the furled state to the expanded state is realized through the elasticity of the support leg.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to an internal drainage short-circuit anastomosis stent.
Background
In general clinical practice, patients with advanced age, serious cardiopulmonary basic disease, advanced tumor and other labels are not suitable to perform surgical operations, and the operations comprise cases of obstructive jaundice, tumor or other mechanical intestinal obstruction, and pancreatic pseudocyst or parcel necrosis formed by acute cholecystitis and acute necrotizing pancreatitis, postoperative effusion and the like, and the treatment mode is usually adopted at present in the cases that the external drainage is performed after percutaneous puncture or luminal catheterization, but the external catheterization drainage has the following problems:
1. in vitro drainage can cause loss of body fluid and cause disturbance of human environment and digestive function;
2. The long-term external tube placement is easy to cause tube detachment or retrograde infection;
Therefore, a stent-like instrument which is placed in a patient body and used for preventing obstruction, in particular to an internal drainage short circuit anastomosis stent.
Disclosure of utility model
In order to overcome the problems in the background art, the utility model adopts the following technical scheme:
An internal drainage short circuit anastomosis stent comprising: a communication structure for forming a passage penetrating at both ends thereof in the obstructed area; and the positioning structure is used for fixing the communication structure in the patient body in an elastic supporting mode and is fixedly connected with the communication structure.
Further, the communication structure is a hollow tubular structure, and the cross section of the communication structure along the axial direction is circular.
Further, the communication structure includes at least two interconnected head ends.
Preferably, the number of the head ends of the communication structure is two.
Further, the positioning structure is connected to the outer side of the head end, and at least two groups of positioning structures are arranged on each internal drainage short-circuit anastomosis bracket.
Preferably, the number of positioning structures is two.
Further, the positioning structure comprises a support leg which is arranged on the head end in a surrounding manner.
Or the support leg arrays are connected to form the positioning structure, and then the positioning structure is connected with the head end.
Further, the number of the supporting legs in each group of the positioning structures is a, and a is more than or equal to 6 and less than or equal to 10.
Preferably, the number of the supporting feet in each group of the positioning structures is 8, so that the positioning structures are in an octopus structure.
Further, the leg includes a collapsed condition in which a first end of the leg is connected to the head end, and a second end of the leg extends toward the other head end and contacts the communication structure such that the stent can enter the patient.
Further, the support leg includes a distracted state in which the first end of the support leg is connected to the head end, the support leg portion is curved and the second end of the support leg is in contact with the obstruction area, such that the communication structure is fixed.
Further, the manufacturing material of the communication structure is one of polyurethane, polyamide or polypropylene, and the manufacturing material of the positioning structure is the same as the manufacturing material of the communication structure.
The utility model has the beneficial effects that:
1. Through the head end ring of every communication structure establishes a plurality of stabilizer blades for this internal drainage short circuit anastomotic bracket has the parallel characteristics of many fulcrums, consequently this internal drainage short circuit anastomotic bracket has more outstanding technological effect in the aspect of reducing the support aversion and preventing puncture point seepage.
2. Through the head end ring at the communication structure establishes the stabilizer blade that has elasticity for this internal drainage short circuit anastomotic bracket is in the furled state that the stabilizer blade was furled when the implantation ware in, and when this internal drainage short circuit anastomotic bracket was put into working position and break away from the implantation ware after entering the state of strutting through elasticity of material itself, make operation process simpler, possess higher practical value.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model in a collapsed state;
FIG. 2 is a schematic cross-sectional view of the whole structure of the present utility model in a folded state;
FIG. 3 is a schematic view of the whole structure of the present utility model in the open state;
FIG. 4 is a schematic cross-sectional view of the overall structure of the present utility model in the expanded state;
in the figure, 1, a communication structure; 11. a headend; 2. a positioning structure; 22. and (5) supporting legs.
Detailed Description
The following detailed description of the embodiments of the present utility model will be made more apparent to those skilled in the art from the following detailed description, in which the utility model is embodied in several, but not all, embodiments of the utility model. The utility model may be embodied or applied in other specific forms and features of the following examples and examples may be combined with each other without conflict, all other examples being contemplated by those of ordinary skill in the art without undue burden from the present disclosure, based on the examples of the utility model.
An internal drainage short-circuit anastomosis stent, as shown in figure 1, comprising: a communication structure 1 for forming a passage penetrating at both ends in the obstructed area; and the positioning structure 2 is used for fixing the communication structure 1 in the patient body in an elastic supporting mode, and the positioning structure 2 is fixedly connected with the communication structure 1.
In some embodiments of the present application, as shown in fig. 1-4, the communication structure 1 is a hollow tubular structure, the cross section of the communication structure 1 along the axial direction is circular or elliptical, and the manufacturing material of the communication structure 1 is one of polyurethane, polyamide or polypropylene, so that the communication structure 1 has better biocompatibility and elasticity, and can be well matched with a liquid passage in a patient by adjusting the thickness of the communication structure 1.
In some embodiments of the present application, as shown in fig. 1-4, the communication structure 1 includes at least two interconnected head ends 11, and when treating an obstruction occurring in a single line, only an internal drainage short-circuit anastomosis stent with two head ends 11 is required.
In other embodiments of the application, when treating an obstruction occurring at a bifurcation in a conduit within a patient, a Y-shaped stent with three head ends 11 may be used, the Y-shaped stent being placed with one side of the patient first comprising two head ends 11 and one side of the patient then comprising one head end 11, the communication structure 1 in this embodiment being smaller in diameter and the legs 22 being longer in length so as to avoid injury to the patient by reducing the maximum radial length at the time of placement.
In some embodiments of the present application, as shown in fig. 1-4, the positioning structures 2 are connected to the outer side of the head end 11, at least two groups of positioning structures 2 are disposed on each internal drainage short circuit anastomosis support, the positioning structures 2 are in one-to-one correspondence with the head end 11 of the communication structure 1, so that the communication structure 1 can be more firmly supported and fixed, and the positioning structures 2 disposed at two sides of the communication structure 1 also have an effect of mutual balance, so as to avoid the communication structure 1 from drifting towards the direction of uneven stress in the use process.
In some embodiments of the present application, as shown in fig. 1-4, the positioning structure 2 is made of the same material as the communication structure 1. The positioning structure 2 comprises support legs 22, and the support legs 22 are arranged on the head end 11 in a surrounding manner; or the support legs 22 are connected end to end in an annular array to form an annular positioning structure 2, and then the annular positioning structure 2 is connected with the head end 11. The legs 22 comprise a collapsed state in which a first end of the leg 22 is connected to the head end 11 and an expanded state in which a second end of the leg 22 extends towards the other head end 11 and contacts the communication structure 1 such that the stent can be introduced into the patient. The support leg 22 further comprises a spreading state in which the first end of the support leg 22 is connected to the head end 11, the support leg 22 is partially arc-shaped, and the second end of the support leg 22 is in contact with the obstruction area, so that the expansion effect of outward pressure and the effect of integral positioning are achieved, and the communication structure 1 is fixed. Wherein, the cross-sectional diameter of the first end of the supporting leg 22 connected with the communication structure 1 is larger, and the diameter of the head end 11 of the communication structure 1 is defined as a, so that the cross-sectional area of the first end of the supporting leg 22 is at least (pi (a×pi)/8) 2, and the cross-sectional area of the second end of the supporting leg 22 is much smaller than the cross-sectional area of the first end of the supporting leg 22; or the smaller the area of each cross-section between the first end of the leg 22 and the second end of the leg 22, the closer the second end is, which allows the leg 22 to spring back better into the pre-collapsed position after being collapsed. In any state, the second ends of the support legs 22 are closer to the head end 11 on the other side than the first ends of the support legs 22, so that the support legs 22 which are reversely arranged on the two head ends 11 can offset the thrust received by the support legs when the whole internal drainage short-circuit anastomosis stent is pressed or stretched, and the communication structure 1 is always in a relatively fixed position.
In some embodiments of the present application, as shown in FIGS. 1-4, the number of feet 22 in each set of locating structures 2 is a, 6.ltoreq.a.ltoreq.10; preferably, the number of the supporting feet 22 in each group of the positioning structures 2 is 8, so that the positioning structures 2 are similar to an octopus structure, and the central axis of each supporting foot 22 is coplanar with the central axis of the communication structure 1; or the central axis of each supporting leg 22 is in a thread shape and is unfolded relative to the central axis of the communication structure 1, in this case, the rotation directions of the supporting legs 22 connected to the two head ends 11 are the same, so that the rotation trend of the anastomotic bracket in a patient body is weakened, and the fixing effect is improved.
The application method of the utility model comprises the following steps:
The internal drainage short-circuit anastomosis stent is placed in an imbedding device or a conveyer, the inner diameter of the imbedding device or the conveyer is smaller than the maximum diameter of the support legs 22 along the axial section of the communication structure 1 in the opening state, so that the support legs 22 on two sides are folded and are close to the middle point in the axial direction of the communication structure 1, an instrument for imbedding the internal drainage short-circuit anastomosis stent is stretched into a target position in a patient under the guidance of an ultrasonic endoscope, other instruments are withdrawn after the anastomosis stent is released, the support legs 22 are automatically opened in the patient based on the elasticity of manufacturing materials, and two sides of an obstruction area are communicated.
Claims (6)
1. An internal drainage short-circuit anastomosis stent, comprising:
the communication structure is used for forming a passage with two ends penetrating through an obstruction area and comprises at least two mutually communicated head ends;
The positioning structure is used for fixing the communication structure in a patient body in an elastic supporting mode and is fixedly connected with the communication structure; the positioning structure comprises a support leg which is arranged on the head end in a surrounding way; the support leg comprises a furled state, a first end of the support leg is connected to the head end in the furled state, and a second end of the support leg extends to other head ends and is contacted with the communication structure, so that the anastomosis stent can enter a patient; the support legs comprise a spreading state, the first ends of the support legs are connected to the head ends in the spreading state, the support leg parts are arc-shaped, and the second ends of the support legs are in contact with the obstruction area, so that the communication structure is fixed; the positioning structures arranged on two sides of the communication structure have the effect of mutual balance, and the communication structure is prevented from moving towards the direction of uneven stress in the use process.
2. The internal drainage short-circuit anastomosis stent of claim 1, wherein the communication structure is a hollow tubular structure.
3. The internal drainage short-circuit anastomosis stent of claim 1, wherein said locating structures are attached to the outside of said head end, and at least two sets of said locating structures are provided on each internal drainage short-circuit anastomosis stent.
4. The internal drainage short-circuit anastomosis stent of claim 1, wherein the number of support legs in each set of positioning structures is a, and a is more than or equal to 6 and less than or equal to 10.
5. The internal drainage short-circuit anastomosis stent of claim 1, wherein the communication structure is made of one of polyurethane, polyamide or polypropylene.
6. The internal drainage short anastomosis stent of claim 5, wherein the positioning structure is made of the same material as the communication structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322124788.4U CN221205787U (en) | 2023-08-09 | 2023-08-09 | Internal drainage short circuit anastomosis stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322124788.4U CN221205787U (en) | 2023-08-09 | 2023-08-09 | Internal drainage short circuit anastomosis stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221205787U true CN221205787U (en) | 2024-06-25 |
Family
ID=91574500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322124788.4U Active CN221205787U (en) | 2023-08-09 | 2023-08-09 | Internal drainage short circuit anastomosis stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221205787U (en) |
-
2023
- 2023-08-09 CN CN202322124788.4U patent/CN221205787U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |