CN106725685B - wire controlled memory umbrella - Google Patents
wire controlled memory umbrella Download PDFInfo
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- CN106725685B CN106725685B CN201611182531.2A CN201611182531A CN106725685B CN 106725685 B CN106725685 B CN 106725685B CN 201611182531 A CN201611182531 A CN 201611182531A CN 106725685 B CN106725685 B CN 106725685B
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- umbrella
- rib
- branch
- openable
- closable
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- 230000007704 transition Effects 0.000 claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 230000023597 hemostasis Effects 0.000 claims abstract description 12
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 12
- 239000013013 elastic material Substances 0.000 claims description 6
- 210000002599 gastric fundus Anatomy 0.000 claims description 5
- 239000007779 soft material Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 16
- 238000007906 compression Methods 0.000 abstract description 16
- 230000000740 bleeding effect Effects 0.000 abstract description 10
- 210000003238 esophagus Anatomy 0.000 abstract description 7
- 210000002784 stomach Anatomy 0.000 abstract description 5
- 238000002575 gastroscopy Methods 0.000 abstract description 4
- 210000004877 mucosa Anatomy 0.000 abstract description 4
- 230000017074 necrotic cell death Effects 0.000 abstract description 3
- 230000036770 blood supply Effects 0.000 abstract description 2
- 238000003745 diagnosis Methods 0.000 abstract description 2
- 208000032843 Hemorrhage Diseases 0.000 description 11
- 210000004379 membrane Anatomy 0.000 description 10
- 208000034158 bleeding Diseases 0.000 description 9
- 230000002439 hemostatic effect Effects 0.000 description 9
- 210000001035 gastrointestinal tract Anatomy 0.000 description 5
- 206010046996 Varicose vein Diseases 0.000 description 4
- 208000027185 varicose disease Diseases 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 3
- 206010016654 Fibrosis Diseases 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 239000012620 biological material Substances 0.000 description 2
- 230000007882 cirrhosis Effects 0.000 description 2
- 208000019425 cirrhosis of liver Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 230000007794 irritation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000004400 mucous membrane Anatomy 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 206010052211 Oesophageal rupture Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 208000025865 Ulcer Diseases 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 231100000397 ulcer Toxicity 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12027—Type of occlusion
- A61B17/1204—Type of occlusion temporary occlusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
- A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
- A61B2017/12081—Details concerning the detachment of the occluding device from the introduction device detachable by inflation
Abstract
A wire-controlled umbrella device comprises a radial telescopic cylindrical support, an openable umbrella and a connection transition part for connecting the cylindrical support and the umbrella. The openable umbrella comprises: a plurality of main ribs; umbrella membranes attached to the plurality of main ribs; a fixing rod; a plurality of first branch ribs; a plurality of second branch ribs, a proximal end of each second branch rib being longitudinally slidably connected to a second end of the fixation rod; and a plurality of adjusting wires, each of which is connected with the proximal end of the second branch rib and extends out of the opening of the top end of the openable and closable umbrella, the hollow channel of the connecting transition part and the hollow channel of the cylindrical bracket. The device can obviously increase the compression area of the fundus of the stomach, can provide low-pressure interval compression, can ensure the blood supply of the esophagus and the mucosa of the fundus of the stomach under pressure, and does not cause necrosis of the mucosa; after the device is placed, the gastroscopy can be further carried out through the esophageal stent and the hollow passage of the fundus umbrella, so that diagnosis and treatment possibility are provided for hemostasis under the gastroscope and hemostasis of bleeding points outside pressed parts; convenient placement and removal, etc.
Description
Technical Field
The invention relates to a hemostatic device for the human digestive tract, in particular to a hemostatic device near the fundus of the stomach.
Background
About 120 ten thousand people die each year due to cirrhosis in the world, and the number of people increases year by year, most of the causes are esophageal gastric fundus varices rupture and bleeding caused by cirrhosis, and the common hemostasis methods are medicines, instruments, interventional operations, open abdominal operations and the like. For acute stage treatment of acute severe hemorrhage, the currently international preferred common means is still a three-lumen two-balloon tube, also known as a Sengstaken-Blakemore tube or a Minnesota tube, which is used by a small number of doctors to stop bleeding by compression, using a Linton-Nachlas tube (only one gastric balloon of about 500ml, no esophageal balloon). Although the hemostatic devices described above have long played an important role in clinical most esophageal fundus varices rupture bleeding, many problems have been found during use, such as common complications including esophageal fundus mucosa necrosis, mucosal ulcers, secondary avulsion bleeding upon removal, rare complications including esophageal rupture, choking airways, and the like, other adverse aspects including placement of tubing, compression inefficiency, difficulty in compression adjustment, balloon rupture, interference with further gastroscopy, and the like.
In addition, as shown in FIG. 1, the fundus 60 of the human digestive tract is immediately adjacent to the distal end of the esophagus 50. When bleeding near the fundus, the local pressure of existing balloon or other hemostatic devices is typically not adjustable, although compression hemostasis may be achieved by accessing the site. Thus, there is a need for a hemostatic device or apparatus that applies pressure to the fundus hemorrhage site during hemostasis that can be adjusted accordingly as needed during hemostasis.
Disclosure of Invention
The present invention aims to provide a digestive tract hemostatic apparatus which can be used, for example, for esophageal fundus hemostasis and which overcomes some or some of the drawbacks mentioned above.
The wire-controlled umbrella device of the invention comprises a radial telescopic cylindrical support, an openable umbrella and a connection transition part for connecting the cylindrical support and the umbrella, wherein the cylindrical support and the connection transition part are both formed with a longitudinal hollow channel,
the openable and closable umbrella has an umbrella tip and an opening and closing end, wherein the umbrella tip is formed with an opening, and the openable and closable umbrella comprises:
a plurality of main ribs converging toward the top end of the openable/closable umbrella in the opened state of the openable/closable umbrella;
umbrella membranes attached to the plurality of main ribs;
a securing rod having a first end and a second end, wherein the first end of the securing rod is disposed adjacent an umbrella tip of the openable and closable umbrella and the second end of the securing rod is disposed adjacent the open and closed end of the openable and closable umbrella;
a plurality of first branch ribs, each first branch rib having a proximal end and a distal end, wherein the proximal end of each first branch rib is fixedly connected to the first end of the fixation rod and the distal end extends toward the top end of the umbrella and is fixedly connected to the corresponding main rib; and
a plurality of second branch ribs, each second branch rib having a proximal end and a distal end, wherein the proximal end of each second branch rib is longitudinally slidably connected to the second end of the fixation rod and the distal end extends toward the top end of the umbrella and is fixedly connected to the corresponding main rib,
wherein the first branch umbrella rib and the second branch umbrella rib are made of shape memory alloy elastic materials, the connection point of the first branch umbrella rib and the main umbrella rib is more adjacent to the top end of the umbrella than the connection point of the second branch umbrella rib and the main umbrella rib, and a plurality of longitudinal sliding grooves are circumferentially arranged near the second end of the fixing rod at intervals to receive the proximal end of the corresponding second branch umbrella rib; and
the plurality of adjusting wires are connected with the proximal end of the second branch rib, extend out of the opening of the top end of the openable umbrella, the hollow channel of the connecting transition part and the hollow channel of the cylindrical support.
By the above construction, the wire control umbrella device of the present invention provides convenient and reliable pressure adjustment. In addition, due to the spread configuration of the main ribs, low pressure interval compression is also provided.
According to one embodiment of the present invention, the wire control umbrella device may further include a removable sleeve, the sleeve being at least partially sleeved over the cylindrical support and the openable umbrella to cause the cylindrical support to assume a radially contracted state and the openable umbrella to assume a closed state when the wire control umbrella device is in the inactive state. The sleeve is preferably made of soft material and accommodates the tubular bracket and the openable and closable umbrella integrally therein.
According to one embodiment of the invention, the outer diameter of the connection transition is preferably smaller than the outer diameter of the tubular stent when the tubular stent is in the expanded state. The connecting transition part is preferably a truncated cone part, and the tapered end of the truncated cone part faces the top end of the openable and closable umbrella.
According to one embodiment of the invention, the umbrella device may further comprise an adjustment wire hose for receiving an adjustment wire.
According to one embodiment of the invention, the tubular stent is preferably a self-expanding stent. The tubular stent may be at least partially made of an elastic memory alloy. The elastic memory alloy preferably at least partially loses elasticity or returns to its original shape at about 50 ℃ (40 ℃ to 60 ℃).
According to one embodiment of the invention, each runner of the fixation rod may be provided with a series of stop means, such as a slot diameter constriction, longitudinally to stop the proximal end of the second branch rib sliding thereto. The longitudinal grooves are preferably provided as blind grooves formed in the circumferential wall of the fixing bar, in order to avoid entanglement between the adjustment wires.
According to one embodiment of the present invention, the cylindrical stent is preferably formed in a mesh-tube structure so as to provide low-pressure interval compression to the esophageal site as well.
According to one embodiment of the invention, the umbrella membrane may also be a mesh membrane or mesh membrane to further provide low pressure interval compression. In addition, the outer perimeter of the umbrella membrane can extend beyond the ends of the main ribs to provide soft edge protection.
According to one embodiment of the invention, the tubular stent may also be coated or attached with a medical polymer or biomaterial film to reduce irritation to the esophagus. In this case, the umbrella membrane and the tubular support membrane may be integrally formed into an elastic membrane or an elastic mesh membrane for easy assembly (simply fitting).
According to an embodiment of the present invention, the main rib may be formed in a flat strip shape and a plurality of perforations are formed thereon, so that the low pressure interval compression effect can be further improved.
Compared with the common hemostatic devices with non-adjustable local pressure such as three-cavity two-sac tube, the device can obviously increase the compression area of the gastric fundus, can provide low-pressure interval compression, can ensure the blood supply of esophagus and gastric fundus compression mucous membrane, and does not cause mucous membrane necrosis; after the device is placed, the gastroscopy can be further carried out through the esophageal stent and the hollow passage of the fundus umbrella, so that diagnosis and treatment possibility are provided for hemostasis under the gastroscope and hemostasis of bleeding points outside pressed parts; the placement and the taking out are convenient, and the shape of the memory alloy can be influenced by temperature when the memory alloy needs to be taken out (for example, a patient drinks hot water at 40 ℃ to 60 ℃ to restore the memory alloy material to the original shape) so as to facilitate the taking out; the observation during the placement is simple, the related complications of the three-cavity two-bag tube can be obviously reduced, and particularly, the bleeding complications after the three-cavity two-bag tube is torn off when the three-cavity two-bag tube is taken out can be avoided; the device can be placed for a long time, can provide long-term compression treatment besides acute-phase treatment, can be used for the preventive treatment of bleeding of patients with severe varicose veins of esophagus and stomach fundus, and expands treatment indications.
Drawings
FIG. 1 is a schematic view of a simple structure in the vicinity of the fundus of the human digestive tract;
FIG. 2 is a schematic view of the open or operating state of the wire control memory umbrella of the present invention;
FIG. 3 is a schematic view of the state of the wire control memory umbrella of the present invention prior to closing or use;
FIG. 4 is a schematic diagram of stress points of a normal open state of the wire control memory umbrella of the present invention;
FIGS. 5 and 6 are schematic views of stress points of the adjustment state of the wire control memory umbrella of the present invention, respectively.
Detailed Description
The invention is further described below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that the embodiments described below are merely illustrative of the present invention and are not intended to be limiting in any way. For example, while the present invention has been described with respect to fundus hemostasis, it will be apparent that it may be used in other suitable locations or applications.
As shown in fig. 2, the wire control memory umbrella of the present invention comprises a cylindrical stand 3, an openable and closable umbrella 5, and a connection transition portion 4 therebetween.
The tubular stent 3 is generally cylindrical in outer profile, formed with a hollow channel and radially expandable. The cylindrical stent 3 is preferably made of an elastic material such as a shape memory alloy elastic material. In addition, the illustrated cylindrical holder 3 is formed in a net cylinder structure, so that low-pressure interval compression can be provided.
The openable and closable umbrella 5 has an upper umbrella tip and a lower openable and closable end. The top end of the umbrella is provided with an opening and is communicated with the hollow channel of the cylindrical bracket 3 through the hollow connecting transition part 4. When the tubular stent 3 is in the expanded state, the outer diameter of the connection transition section 4 is smaller than the outer diameter of the tubular stent. The connection transition 4 is illustrated as being shaped like a truncated cone with its tapered end facing the tip of the umbrella 3.
The openable and closable umbrella 5 includes a plurality of main ribs 9, a plurality of first branch ribs 7, a plurality of second branch ribs 8, and a fixing rod 6.
The main rib 9 converges toward the top end of the openable and closable umbrella 5 in the opened state of the openable and closable umbrella. The main rib 9 may be made of a suitable material such as titanium or may be made of a shape memory alloy elastic material. The main rib 9 may be formed in a flat strip shape. A plurality of perforations may be further formed in the flat, elongated main rib 9. The length of the main rib 9 can be about 9 em.
An umbrella cover or an umbrella film 10 is attached to the main rib 9, and the umbrella film 10 can be made of medical polymer materials or human body absorbable and degradable materials. Although not shown, the umbrella membrane 10 can also employ a mesh or mesh membrane to further provide low pressure interval compression. The outer periphery of the canopy 10 may extend slightly beyond the ends of the main ribs 9 to provide soft edge protection.
In addition, the tubular stent 3 may be coated or attached with a medical polymer or biomaterial film (not shown) to reduce irritation to the esophagus 50. In this case, the umbrella film 10 may be integrally formed with the tubular holder film as an elastic film or an elastic mesh film.
The illustrated fixing bar 6 has an upper first end arranged adjacent to the umbrella tip of the openable and closable umbrella 5 and a lower second end arranged adjacent to the open and closed end of the openable and closable umbrella 5. The length of the fixing rod 6 may be about 5 cm.
Each first branch rib 7 has a proximal end fixedly connected to the first end of the fixing rod 6 and a distal end extending towards the top end of the umbrella and fixedly connected to the corresponding main rib 9. Thus, the fixing rod 6 and the main rib 9 are fixed to each other by the first branch rib 7. The first branch rib 7 may be formed in a round bar shape, and the length may be about 4 cm.
Each second branch rib 8 also has a proximal end and a distal end, the proximal end of which is longitudinally slidably connected to the second end of the fixing rod 6 and the distal end extends towards the top end of the umbrella and is fixedly connected to the corresponding main rib 9. The second branch rib 8 may also be formed into a round bar shape, and the length may be about 6 em. Both the first branch rib 7 and the second branch rib 8 can be made of shape memory alloy elastic materials.
The connection point of the first branch rib 7 and the main rib 9 is closer to the top end of the umbrella than the connection point of the second branch rib 8 and the main rib 9, so that the connection point of the first branch rib 7 forms a first inner ring and the connection point of the second branch rib 8 forms a second outer ring. An included angle of about 40 degrees can be formed between the first branch umbrella rib 7 and the fixed rod.
A plurality of longitudinal runners (not specifically shown) are circumferentially spaced around the second end of the securing rod 6 to receive the proximal end of a corresponding second branch rib 8. A series of stop mechanisms, such as slot diameter constrictions 12, may be provided longitudinally (up and down in the illustration) on each runner to stop the proximal end of the second branch rib 8 sliding thereto. The proximal end of the second branch rib 8 may in this case preferably be formed as an expansion head structure, such as a half ball head. The longitudinal sliding grooves are preferably provided as blind grooves formed on the circumferential wall of the solid fixing bar 6 in order to avoid entanglement between the adjustment wires 1, which will be described below.
In order to facilitate the adjustment of the longitudinal sliding of the proximal end of the second branch rib 8 along the fixing rod 6, a plurality of adjustment wires 1 may be used, wherein one end of each adjustment wire 1 is connected with the proximal end of the second branch rib 8, and the other end extends out of the opening of the top end of the openable and closable umbrella 5 and the hollow channel of the tubular bracket 3. In order to prevent scattering of the adjustment wires 1 and possible damage to the digestive tract, a large part of these adjustment wires 1 (referred to as their length) may be accommodated in a hose 11.
As shown in fig. 3, the wire-controlled memory umbrella of the present invention may further comprise a removable sleeve or removable sleeve 2 which is sleeved over the openable and closable umbrella 5 and the tubular holder 3 to be maintained in a closed state or a contracted state, and automatically releases the openable and closable umbrella 5 and the tubular holder 3 to be brought into an open state or an expanded state after being removed. Those skilled in the art will appreciate that any other suitable means may be employed to release the umbrella 5 and the barrel 3 to an open or expanded condition.
The use and operation of the wire control memory umbrella of the present invention will be described briefly below.
Firstly, the device with the sleeve 2 is delivered to the vicinity of the fundus 60 of the alimentary canal through the oral cavity or the nasal cavity, the sleeve 2 is withdrawn after the position is determined by x-ray or bedside ultrasound, at this time, the tubular bracket 3 and the openable and closable umbrella 5 are automatically expanded or normally opened (as shown in fig. 4), the whole device is clamped or positioned at the corresponding positions of the esophagus 50 and the fundus 60 due to the relatively reduced outer diameter of the connection transition part 4, and the varicose veins at the position are pressurized to stop bleeding. Since the entire device is formed with hollow channels running up and down, other examinations such as gastroscopy can still be performed at this time. In addition, the hemostatic device of the present invention may even be subsequently left in the patient for a short period of time to maintain its hemostatic effect without affecting its normal life.
As shown in fig. 5, if the pressure applied to a place near the fundus of the stomach by the adjusting means is required, the corresponding adjusting wire 1 is pulled upward, thereby driving the proximal end of the second branch rib 8 connected thereto to slide upward along the longitudinal sliding groove provided on the outer circumference of the fixing rod 6 until the groove diameter narrowing 12 at a height corresponding to the required pressure is stopped there by it.
In addition, as shown in fig. 6, the pressure of multiple directions around the umbrella surface of the openable umbrella 5 can be respectively adjusted by sequentially adjusting different adjusting wires 1, so that the curved vein of the whole umbrella surface facing the gastric fundus mucosa surface is approximately and completely attached and pressed, thereby achieving the effect of full hemostasis.
Claims (7)
1. A wire-controlled umbrella device for hemostasis of gastric fundus comprises a radial telescopic cylindrical support, an openable umbrella and a connecting transition part for connecting the cylindrical support and the umbrella, wherein the cylindrical support and the connecting transition part are both formed with longitudinal hollow channels, the cylindrical support is formed into a self-expansion support with a net-cylinder structure, when the cylindrical support is in an expansion state, the outer diameter of the connecting transition part is smaller than the outer diameter of the cylindrical support,
the openable and closable umbrella has an umbrella tip and an opening and closing end, wherein the umbrella tip is formed with an opening, and the openable and closable umbrella comprises:
a plurality of main ribs converging toward the top end of the openable/closable umbrella in the opened state of the openable/closable umbrella;
umbrella membranes attached to the plurality of main ribs;
a securing rod having a first end and a second end, wherein the first end of the securing rod is disposed adjacent an umbrella tip of the openable and closable umbrella and the second end of the securing rod is disposed adjacent the open and closed end of the openable and closable umbrella;
a plurality of first branch ribs, each first branch rib having a proximal end and a distal end, wherein the proximal end of each first branch rib is fixedly connected to the first end of the fixation rod and the distal end extends toward the top end of the umbrella and is fixedly connected to the corresponding main rib;
a plurality of second branch ribs, each second branch rib having a proximal end and a distal end, wherein the proximal end of each second branch rib is longitudinally slidably connected to the second end of the fixation rod and the distal end extends toward the top end of the umbrella and is fixedly connected to the corresponding main rib,
wherein the first branch umbrella rib and the second branch umbrella rib are made of shape memory alloy elastic materials, the connection point of the first branch umbrella rib and the main umbrella rib is more adjacent to the top end of the umbrella than the connection point of the second branch umbrella rib and the main umbrella rib, and a plurality of longitudinal sliding grooves are circumferentially arranged near the second end of the fixing rod at intervals to receive the proximal end of the corresponding second branch umbrella rib; and
the plurality of adjusting wires are connected with the proximal end of the second branch rib, extend out of the opening of the top end of the openable umbrella, the hollow channel of the connecting transition part and the hollow channel of the cylindrical support.
2. The umbrella-controlled device of claim 1, further comprising a removable sleeve that is at least partially sleeved over the tubular support and the umbrella when the umbrella-controlled device is in a non-operational state to cause the tubular support to assume a radially contracted state and the umbrella to assume a closed state.
3. The umbrella-by-wire apparatus according to claim 2, wherein the sleeve is integrally made of a soft material and accommodates the tubular holder and the openable and closable umbrella integrally therein.
4. A drive-by-wire umbrella apparatus as claimed in claim 1, wherein the connection transition portion is a truncated cone portion having a tapered end directed toward an umbrella tip of the openable and closable umbrella.
5. The umbrella drive-by-wire apparatus of claim 1, further comprising an adjustment wire hose for receiving an adjustment wire.
6. The umbrella drive-by-wire apparatus of claim 1, wherein the tubular support is at least partially made of an elastic memory alloy.
7. The umbrella drive-by-wire apparatus of claim 6, wherein the elastic memory alloy at least partially loses elasticity at 40 ℃ to 60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182531.2A CN106725685B (en) | 2016-12-19 | 2016-12-19 | wire controlled memory umbrella |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182531.2A CN106725685B (en) | 2016-12-19 | 2016-12-19 | wire controlled memory umbrella |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106725685A CN106725685A (en) | 2017-05-31 |
| CN106725685B true CN106725685B (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611182531.2A Active CN106725685B (en) | 2016-12-19 | 2016-12-19 | wire controlled memory umbrella |
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| CN (1) | CN106725685B (en) |
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| US20050149072A1 (en) * | 2003-12-31 | 2005-07-07 | Devries Robert B. | Devices and methods for tissue invagination |
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| CN202313544U (en) * | 2011-04-27 | 2012-07-11 | 郭伟 | Aorta interlayer crevasse plugging umbrella |
| CN202458395U (en) * | 2011-12-29 | 2012-10-03 | 刘杨 | Barium meal conveyor |
| CN103800045A (en) * | 2014-02-24 | 2014-05-21 | 梅奇峰 | Medical cardiac tamponade object |
| CN103932753A (en) * | 2014-05-05 | 2014-07-23 | 梅奇峰 | Device and method for manufacturing isolating layer in cardiac tamping |
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