CN212282522U - Expansion device for colorectal obstruction - Google Patents
Expansion device for colorectal obstruction Download PDFInfo
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- CN212282522U CN212282522U CN202021933487.6U CN202021933487U CN212282522U CN 212282522 U CN212282522 U CN 212282522U CN 202021933487 U CN202021933487 U CN 202021933487U CN 212282522 U CN212282522 U CN 212282522U
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- obstruction
- expansion
- expansion bracket
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- colorectal
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Abstract
The utility model discloses an expansion device for colorectal obstruction, which comprises an expansion component; the liquid injection pipe is arranged on the expanded stent, the left end of the liquid injection pipe extends leftwards to the left end part of the expanded stent, the right end of the liquid injection pipe extends rightwards to the expanded stent, and the liquid injection pipe corresponding to the expanded stent is provided with a plurality of side flow holes arranged at intervals; the delivery piece is used for delivering the expansion bracket to the rectal obstruction part; and a pulling-out piece which pulls out the expansion component from the rectal obstruction part. The expansion bracket of the utility model is a plastic bracket, which not only has transverse supporting force, but also has longitudinal compliance, and is simple to be placed; the left end part of the plastic support is provided with the air bag, after the plastic support is placed in place, the air bag is positioned in the intestinal tract at the inner end of the obstruction part, and the air bag is filled to be larger than the diameter of the plastic support at the corresponding part, so that the air bag is blocked in the intestinal tract at the inner end of the obstruction part, the plastic support is prevented from moving or falling from the inside to the outside of the body, and the probability of support displacement is effectively reduced.
Description
Technical Field
The utility model relates to a medical instrument especially relates to an expansion device for colorectal obstruction.
Background
The morbidity and mortality of colorectal cancer in China have a rising trend, most patients are found to be in middle and late stages, and intestinal obstruction can be caused by the colorectal cancer in the late stages.
At present, the common clinical intestinal obstruction treatment means comprise surgical tumor resection, colostomy, stent placement, intestinal obstruction catheter placement and the like. For patients with advanced age or poor constitution, due to the high risk and trauma of surgical resection or colostomy, the problem of obstruction is usually solved clinically by stent placement or ileus catheter placement. Traditional ileus catheter can alleviate the patient and hinder the symptom, but it is inconvenient to carry and can not eradicate the stenosis, needs the patient to carry for a long time and regularly change, influences patient's quality of life.
At present, a common clinical intestinal stent is a self-expansion type metal wire braided stent, and the intestinal canal is expanded by utilizing the metal wire braided stent, so that the narrow or blocked part is unobstructed again. However, the existing self-expanding wire-woven inner stent has the complications of stent displacement, falling off, restenosis, bleeding and the like. Therefore, it is a constant pursuit of the skilled in the art how to design an expansion device which has a good fixing effect, a small probability of displacement or detachment, and an effective reduction of stent restenosis.
Disclosure of Invention
An object of the utility model is to provide an expansion device for colorectal obstruction, this expansion device's fixed effectual, it is convenient to take out, can also carry out radiotherapy, can also reduce the probability that the expansion support shifted or drops, can also effectively shorten patient's live time.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
a expansion device for colorectal obstruction, include
A stent assembly comprising
Expanding the stent;
a fixing portion provided at a left end portion of the stent; and
the display mark part is arranged on the expansion bracket and develops under the image equipment;
the liquid injection pipe is arranged on the expanded stent, the left end of the liquid injection pipe extends leftwards to the left end part of the expanded stent, the right end of the liquid injection pipe extends rightwards to the expanded stent, and the liquid injection pipe corresponding to the expanded stent is provided with a plurality of side flow holes arranged at intervals;
the delivery piece is used for delivering the expansion bracket to the rectal obstruction part; and
and (5) pulling out the expansion component from the rectal obstruction part.
Furthermore, the fixing part comprises an air bag sleeved at the left end part of the expansion bracket and a filling tube arranged on the expansion bracket, the left end opening of the filling tube is communicated with the air bag, and the right end part of the filling tube extends to the right to form the expansion bracket.
Furthermore, the right end parts of the filling pipe and the liquid injection pipe are respectively provided with an opening and closing piece, and the opening and closing pieces are silica gel plugs or regulating valves.
Furthermore, a radiation therapy assembly is arranged on the expansion bracket.
Furthermore, the outer surface of the tube wall of the expansion bracket is provided with an installation groove extending along the length direction of the expansion bracket, and the radiation therapy component is a radiation particle strip clamped in the installation groove.
Furthermore, the display mark part comprises a plurality of metal mark points which are arranged on the expansion bracket at equal intervals.
Furthermore, the conveying piece is a conveying rod with a guide wire through hole, the left end part of the conveying rod is in a conical structure, and the right end part of the conveying rod is expanded to form a handheld part.
Furthermore, the pulling-out piece is a pulling rod, and the left end part of the pulling-out piece is of a conical structure; and the outer surface of the pulling rod is a rough surface.
Furthermore, the liquid injection pipe is provided with length scale marks.
Furthermore, the expansion bracket is a plastic bracket, and the pipe diameter of the expansion bracket is 1.0 cm-2.0 cm.
The utility model has the following advantages:
(1) the utility model discloses an expansion bracket not only has certain elasticity for the plastic support, still has better radial holding power and vertical compliance, ensures that the expansion effect just gets and puts the convenience.
(2) The utility model discloses be provided with the gasbag at plastic support's left end portion, plastic support puts into the back that targets in place, and the gasbag is located the intestinal of obstructing the position the inner, because the gasbag is greater than rather than the plastic support pipe diameter that corresponds the department after filling, so the gasbag card keeps off in the intestinal of obstructing the position the inner, and then carries on spacingly to plastic support, prevents that plastic support from the internal outside string or coming off, effectively reduces the probability that the support shifted.
(3) The utility model discloses set up a notes liquid pipe that has the side flow hole on plastic support, when postoperative intestinal content is thick relatively, the accessible is annotated the liquid pipe and is injected into the dilution liquid medicine (like aseptic distilled water) in to patient's intestinal, dilutes the thick content in the intestinal, and the content after making the dilution effectively avoids gluing thick content and blocks up the support along the intestinal discharge is external, and treatment is good.
(4) The plastic bracket of the utility model is provided with the radiation particle strip clamping groove, which can carry out radiotherapy to the tumor tissue at the obstructed part, realizes radiotherapy while expanding and has good treatment effect; when the obstruction part of the patient has no tumor tissue, the radioactive particle strip can be taken down, the disassembly and the assembly are flexible, and the application range is wide.
(5) The utility model discloses a length of annotating liquid pipe and sufficient pipe all is greater than plastic support's length, and annotates the right-hand member portion of liquid pipe and sufficient pipe and all is located outside patient's anus, annotates the structure of liquid pipe and sufficient pipe promptly and provides the tractive force for getting the support, and accessible notes liquid pipe and sufficient pipe tractive to the anus mouth with plastic support when getting the support, then will pull out a cartridge in plastic support, utilizes the frictional force of pulling out piece and plastic support to take out plastic support, has reduced the support and has taken out the degree of difficulty.
(6) The conveying rod of the utility model is convenient for placing the plastic bracket into the intestinal obstruction part; the pull rod, the liquid injection pipe and the filling pipe are matched, so that the expansion bracket can be quickly taken out, and the operation is simplified.
Drawings
Fig. 1 is a schematic view of the expansion assembly and delivery member of the present invention.
FIG. 2 is a schematic view of the stent assembly of FIG. 1 (with the balloon in an inflated state).
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic view of the structure of the conveying member in fig. 1.
Fig. 5 is a view of the connection of the expansion assembly and the extractor.
Fig. 6 is a schematic view of the drawer of fig. 5.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.
As shown in figures 1-6, the dilating device for colorectal obstruction of the present invention comprises
An expansion assembly comprising
The expansion bracket 1 (namely a plastic bracket, which is made of plastic with certain transverse elasticity and longitudinal supporting force) has the length of 10cm-14cm, the pipe diameter of 1.0 cm-2.0 cm, good elasticity, toughness and compliance and good tissue compatibility, effectively reduces the stimulation to intestinal mucosa, prevents the proliferation of granulation tissues, and is easy to adjust the position and take out after being placed for a long time;
a fixing portion provided at a left end portion of the stent 1; and
the display marking part is arranged on the expansion bracket 1 and develops under an image device so as to track the position of the expansion bracket 1 and ensure that the expansion bracket 1 is placed in the intestinal obstruction part;
the injection tube 2 is arranged on the expansion bracket 1, the left end of the injection tube 2 extends leftwards to the left end of the expansion bracket 1, the right end of the injection tube extends rightwards to the expansion bracket 1, the injection tube 2 corresponding to the expansion bracket 1 is provided with a plurality of lateral flow holes 3 which are arranged at intervals, when intestinal tract contents after operation of a patient are viscous, liquid medicine (such as sterile distilled water) can be injected into the obstruction part of the patient through the injection tube 2 to dilute the intestinal tract contents, so that the diluted contents are smoothly discharged out of the body through the expansion bracket 1, and the treatment effect is ensured; a silica gel plug (or an adjusting valve) is inserted into the right port of the liquid injection pipe 2; and the length scale marks are arranged on the liquid injection pipe 2, so that the position of the expansion bracket 1 in the implantation process can be effectively confirmed;
the delivery member delivers the stent 1 to the rectal obstruction site; and
the pulling-out piece is inserted into the through hole of the expansion bracket 1 when the bracket is taken, the right end of the pulling-out piece extends out of the expansion bracket 1, and the expansion assembly is pulled out from the rectal obstruction part.
As shown in fig. 1-3, the fixing portion comprises an air bag 4 sleeved on the left end portion of the expandable stent 1 and a filling tube 5 arranged on the expandable stent 1, the left end of the filling tube 5 is communicated with the air bag 4, the right end portion of the filling tube extends out of the expandable stent 1 to the right, and the right end portion of the filling tube 5 is provided with an opening and closing piece;
the opening and closing piece is a silica gel plug which is hermetically inserted into a right port of the filling tube 5 (certainly, the silica gel plug can also be an adjusting valve which is arranged at the right end part of the filling tube 5, and the filling tube 5 is switched on and off through the adjusting valve), the silica gel plug can be automatically sealed after the injection needle is pulled out, the sealing performance is effectively ensured, the air bag 4 is prevented from leaking air or liquid under the filling state, and the fixing effect of the air bag 4 is effectively ensured;
after the expansion bracket 1 is placed with the pipe, pass the syringe needle and stretch into in sufficient pipe 5 with the silica gel stopper, utilize the manual (or utilize medical syringe pump automatic injection) of syringe to inject distilled water (or gaseous) into sufficient pipe 5 and make gasbag 4 sufficient, gasbag 4 is located the inner at obstruction position, is greater than the pipe diameter of expansion bracket 1 after its is sufficient, and then makes gasbag 4 block keep off in the inner at obstruction position, realizes the fixed of expansion bracket 1. The distilled water injected into the balloon 4 at the same time may be distilled water containing a developing substance (e.g., iodine contrast agent) or the inner layer of the balloon 4 may be coated with a developing layer so that the balloon 4 can be developed under an imaging device to facilitate tracking of the position of the balloon 4.
As shown in fig. 1-2, the stent 1 is further provided with a radiation therapy component, the outer surface of the tube wall of the stent 1 is provided with an installation groove extending along the length direction thereof, the radiation therapy component is a radiation particle strip 6 clamped in the installation groove, the radiation particle strip 6 is composed of a particle tube and radiation particles encapsulated in the particle tube, wherein the radiation particles are clinically common iodine 125 particles (having a cylindrical structure, the diameter of which is about 0.8mm and the length of which is about 4.5 mm), and the radiation of the iodine 125 particles is used for killing tumor tissues at the obstruction part, so that the radiation therapy is realized while the stent is expanded, the therapeutic effect is good, and the carrying time of a patient is effectively shortened. In actual processing, two, three or four mounting grooves can be formed in the outer surface of the tube wall of the stent 1, and one radioactive particle strip 6 can be selectively mounted in any one (or any two, any three or four) mounting grooves according to the length of tumor tissues.
As shown in fig. 1-2, the outer surface of the tube wall of the expanded stent 1 is provided with a display mark portion, and the display mark portion comprises a plurality of metal mark points 7 (platinum sheets with the diameter of about 0.5 mm) which are arranged on the expanded stent 1 at equal intervals, and the metal mark points can be developed under an image device, so that the position of the expanded stent 1 can be conveniently tracked and determined, and accurate placement can be realized; meanwhile, the metal mark points 7 are arranged at equal intervals, so that the length of the expansion bracket 1 placed into the obstruction part can be conveniently tracked and determined, and accurate placement is further ensured.
As shown in fig. 1 and 4, the conveying element is a conveying rod 8.1 with a guide wire perforation, the inner end of the conveying rod 8.1 is in a conical structure, the right end of the conveying rod 8.1 is expanded to form a handheld part 8.2 so as to be convenient to hold, the length of the conveying rod 8.1 is larger than that of the expansion bracket 1, and the left end (with a guiding function) in the conical structure and the handheld part 8.2 are ensured to be positioned outside the expansion bracket 1. When putting into expansion bracket 1, with conveying pole 8.1 cartridge on expansion bracket 1, and the conical inner end of conveying pole 8.1 wears out from the inner port of expansion bracket 1, and the handheld portion 8.2 of conveying pole 8.1 is located the outside of expansion bracket 1 right port, send expansion bracket 1 into the rectum through the anus along the seal wire in, it is sufficient when gasbag 4 crosses obstruction position, realize expansion bracket 1's fixed, then extract the seal wire with conveying pole 8.1 can, expansion bracket 1 puts into simple and convenient.
As shown in fig. 5-6, the pulling member is a pulling rod 9, the left end of the pulling rod 9 is a conical structure (i.e. the inner end of the pulling rod 9 is a conical head), and the outer surface of the pulling rod 9 is a rough surface, so as to ensure that the outer surface of the pulling rod 9 is in contact with the inner surface of the stent 1, and increase the friction force; the right end of the pulling rod 9 is positioned outside the expansion bracket 1, so that the expansion bracket 1 can be conveniently held by hands, and then can be taken out from the body. During actual processing, in order to increase the friction force between the pulling rod 9 and the expansion bracket 1, 1-3 external threads are arranged on the outer surface of the pulling rod 9, internal threads are correspondingly arranged on the inner surface of the pipe wall of the expansion bracket 1, and the pulling rod 9 can be screwed in the expansion bracket 1, so that the connection stability of the pulling rod 9 and the expansion bracket 1 is ensured, and the pulling rod 9 is prevented from falling off from the expansion bracket 1.
Expanding unit can put into the position of obstruction of patient's intestinal according to putting into operation range of conventional intestinal support, concrete method is: carrying out radiography on an intestinal obstruction part of a patient so as to be convenient for clearing the specific position of the obstruction part under an imaging device; then under the perspective condition of an X-ray imaging device and the like, a guide wire passes through the anus of a patient and then passes through the intestinal obstruction part, then enters the proximal end, a conveying rod 8.1 penetrates through the conveying rod 8.1 from the outer end of the guide wire (an expansion bracket 1 is sleeved on the conveying rod 8.1), the conveying rod 8.1 and the expansion bracket 1 are conveyed into the intestinal obstruction part of the patient along the guide wire, an air bag 4 passes through the obstruction narrow section, distilled water is injected into the air bag 4 by using an injector (manual or automatic injection of a medical injection pump), so that the air bag 4 is in a filling state, the filled air bag 4 is blocked at the inner side of the narrow section, then the conveying rod 8.1 is pulled out, and when the conveying rod 8.1 is pulled out, the narrow section and the air bag 4 are matched with each other, so that the conveying rod 8.1 can be effectively prevented from pulling out the expansion bracket 1 out of the body;
when viscous contents appear in the intestinal tract of a patient after operation, liquid medicine (such as sterile distilled water) is injected into the patient through the injection tube, the viscous contents in the intestinal tract of the patient are diluted, the diluted contents smoothly pass through the expansion bracket 1 and then are discharged out of the body, and the probability that the expansion bracket 1 is blocked due to the viscous contents is effectively reduced;
in the expansion process, as the outer surface of the expansion bracket 1 is provided with the radiation particle strip 6, the radiation treatment can be carried out on the tumor tissue of the obstruction part to kill the tumor tissue, so as to realize the expansion and the radiation treatment of the obstruction part, effectively solve the obstruction problem, shorten the carrying time of a patient and improve the life quality;
when the bracket can be taken out or needs to be replaced when the treatment effect is achieved, the distilled water (or air) in the air bag 4 is pumped out by using a negative pressure pump or an injection tube, so that the air bag 4 is in a retraction state; annotate the outer tip of liquid pipe 2 and sufficient pipe 5 and be located the anus outside, handheld liquid pipe 2 and sufficient pipe 5 will expand support 1 tractive to patient's anus mouth, insert expansion support 1 with the conical tip of dead lever 9 in, twist soon round (or two circles) and make dead lever 9 and expansion support 1 link together, outwards stimulate dead lever 9, can take out expansion support 1, the support takes out easy operation.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in fig. 1), and if the specific posture is changed, the directional indicator is changed accordingly. In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Claims (10)
1. An expansion device for colorectal obstruction, characterized by: comprises that
A stent assembly comprising
An expansion bracket having a through hole;
a fixing portion provided at a left end portion of the stent; and
the display mark part is arranged on the expansion bracket and develops under the image equipment;
the liquid injection pipe is arranged on the expanded stent, the left end of the liquid injection pipe extends leftwards to the left end part of the expanded stent, the right end of the liquid injection pipe extends rightwards to the expanded stent, and the liquid injection pipe corresponding to the expanded stent is provided with a plurality of side flow holes arranged at intervals;
the delivery piece is used for delivering the expansion bracket to the rectal obstruction part; and
and (5) pulling out the expansion component from the rectal obstruction part.
2. The dilation device for colorectal obstruction of claim 1, wherein: the fixed part is established including the cover the gasbag of expansion support left end portion and the full pipe of setting on expansion support, the left port of full pipe with the gasbag is linked together, and its right-hand member portion extends expansion support to the right.
3. The dilation device for colorectal obstruction of claim 2, wherein: the right-hand member portion of filling pipe and notes liquid pipe is provided with the opening and closing piece respectively, the opening and closing piece is the silica gel stopper or governing valve.
4. The dilation device for colorectal obstruction of claim 2, wherein: the expansion bracket is also provided with a radiation therapy assembly.
5. The dilation device for colorectal obstruction of claim 4, wherein: the outer surface of the tube wall of the expansion bracket is provided with an installation groove extending along the length direction of the expansion bracket, and the radiation therapy component is a radiation particle strip clamped in the installation groove.
6. The dilation device for colorectal obstruction of claim 1, wherein: the display mark part comprises a plurality of metal mark points which are arranged on the expansion bracket at equal intervals.
7. The dilation device for colorectal obstruction of claim 1, wherein: the conveying piece is a conveying rod with a guide wire through hole, the left end of the conveying rod is of a conical structure, and the right end of the conveying rod is expanded outwards to form a handheld part.
8. The dilation device for colorectal obstruction of claim 1, wherein: the pulling-out piece is a pulling rod, and the left end part of the pulling-out piece is of a conical structure; and the outer surface of the pulling rod is a rough surface.
9. The dilation device for colorectal obstruction of claim 1, wherein: and length scale marks are arranged on the liquid injection pipe.
10. The dilation device for colorectal obstruction of claim 1, wherein: the expansion bracket is a plastic bracket, and the pipe diameter of the expansion bracket is 1.0 cm-2.0 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021933487.6U CN212282522U (en) | 2020-09-07 | 2020-09-07 | Expansion device for colorectal obstruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021933487.6U CN212282522U (en) | 2020-09-07 | 2020-09-07 | Expansion device for colorectal obstruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212282522U true CN212282522U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021933487.6U Active CN212282522U (en) | 2020-09-07 | 2020-09-07 | Expansion device for colorectal obstruction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212282522U (en) |
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2020
- 2020-09-07 CN CN202021933487.6U patent/CN212282522U/en active Active
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