CN208741719U - A balloon dilatation catheter - Google Patents
A balloon dilatation catheter Download PDFInfo
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- CN208741719U CN208741719U CN201721652322.XU CN201721652322U CN208741719U CN 208741719 U CN208741719 U CN 208741719U CN 201721652322 U CN201721652322 U CN 201721652322U CN 208741719 U CN208741719 U CN 208741719U
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- sacculus
- dilating catheter
- outer tube
- state
- inner tube
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- 239000013013 elastic material Substances 0.000 claims abstract description 4
- 230000000916 dilatatory effect Effects 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 15
- 230000008602 contraction Effects 0.000 claims description 13
- 239000004952 Polyamide Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 230000008961 swelling Effects 0.000 claims description 5
- 239000004816 latex Substances 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000002775 capsule Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 2
- 230000003902 lesion Effects 0.000 abstract description 12
- 230000010339 dilation Effects 0.000 abstract 2
- 230000000452 restraining effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 8
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 238000002584 aortography Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 210000003090 iliac artery Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 poly ammonia Ester Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M25/0026—Multi-lumen catheters with stationary elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/1002—Balloon catheters characterised by balloon shape
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/104—Balloon catheters used for angioplasty
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
- A61M29/02—Dilators made of swellable material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M2025/0008—Catheters; Hollow probes having visible markings on its surface, i.e. visible to the naked eye, for any purpose, e.g. insertion depth markers, rotational markers or identification of type
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/1002—Balloon catheters characterised by balloon shape
- A61M2025/1004—Balloons with folds, e.g. folded or multifolded
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1079—Balloon catheters with special features or adapted for special applications having radio-opaque markers in the region of the balloon
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1086—Balloon catheters with special features or adapted for special applications having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1088—Balloon catheters with special features or adapted for special applications having special surface characteristics depending on material properties or added substances, e.g. for reducing friction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/02—General characteristics of the apparatus characterised by a particular materials
- A61M2205/0238—General characteristics of the apparatus characterised by a particular materials the material being a coating or protective layer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/12—Blood circulatory system
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Biophysics (AREA)
- Child & Adolescent Psychology (AREA)
- Vascular Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
本申请所述的一种球囊扩张导管，所述的扩张导管包括外管、部分位于外管内的内管，内管的远端部分从所述的外管的远端伸出，所述的扩张导管还包括可折叠成多瓣的球囊、包覆在所述的球囊外的使用弹性材料制成的束缚层，所述的球囊的远端和所述的束缚层的远端与所述的内管的外壁密封连接，所述的球囊的近端与所述的束缚层的近端与所述的外管的外壁密封连接。有了束缚层之后，球囊在多次扩张完之后依然能收缩到原先很小尺寸的状态，使得产品可以多次重复的进入新的病变进行扩张，即节省了产品的成本，也方便了医生的操作，且在扩张完成之后可以轻松回撤到鞘管中取出。
A balloon dilatation catheter described in this application, the dilation catheter comprises an outer tube and an inner tube partially located in the outer tube, the distal part of the inner tube protrudes from the distal end of the outer tube, and the The dilatation catheter also includes a balloon that can be folded into multiple flaps, a restraint layer made of elastic material wrapped outside the balloon, and the distal end of the balloon and the distal end of the restraint layer are the same as the one. The outer wall of the inner tube is sealingly connected, and the proximal end of the balloon and the proximal end of the restraining layer are sealingly connected to the outer wall of the outer tube. With the binding layer, the balloon can still shrink to its original small size after repeated expansions, so that the product can repeatedly enter new lesions for expansion, which not only saves the cost of the product, but also facilitates the doctor. operation and can be easily withdrawn into the sheath for removal after dilation is complete.
Description
Technical field
This application involves a kind of sacculus dilating catheters, more particularly to a kind of balloon expandable that can be repeatedly used to lead
Pipe.
Background technique
Currently, foley's tube originates from the 1960s.Dotter in 1963 stumble on distal aorta intubation when,
Conduit has successfully carried out abdominal aortography by the common iliac artery of narrow obstruction, him is made to expect to use using this method
Flexible seal wire guiding catheter goes directly and gradually to expand narrow artery.Dotter in 1964 etc. applies same spindle guide for the first time
Pipe (coaxial catheter) has carried out PTA to the patient of artery of lower extremity Serious Stenosis and has succeeded.Then there is metal
Bare bracket stage, bracket for eluting medicament stage, and the degradable bracket stage risen.Although bracket tentatively substitutes
Simple PTA balloon expandable, but have to carry out predilation, therefore PTA using PTA foley's tube before stenter to implant
Sacculus dilating catheter pre-expansion or the essential treatment tool of stenter to implant.
Existing PTA product mainly includes structure as shown in Figure 1: sacculus 1 can be formed by flap shown in Fig. 2 and 3
The appearance of three valves or more valves winding, can significantly reduce the size of product insertion, also facilitate sacculus to pass through narrow
Lesion locations.Product enters after blood vessel passes through lesion locations, and the full expansion of sacculus, then release is withdrawn again, or is placed into
Other lesion locations continue to expand.
Product is difficult to be restored to original shape and size after balloon expandable release, is all often to form flat two
The shape of valve, such sacculus can be more much larger than the size of original more valves, increases the difficulty that Product recycling enters sheath, also increases
By the difficulty of lesion locations when product is expanded for other lesions, thus loses product and repeated to lesion is had more
The ability of expansion.Many places lesion or longer lesion may be needed to increase consumption the quantity of product, the warp of patient is increased
Ji burden.
Utility model content
In order to solve the above technical problems, the balloon expandable that the purpose of the application, which is to provide one kind, to be repeatedly used is led
Pipe.
A kind of sacculus dilating catheter described herein, the dilating catheter include outer tube, are partially located in outer tube
The distal portions of inner tube, inner tube are stretched out from the distal end of the outer tube, and the dilating catheter further includes caning be folded into more valves
Bond course, the distal end of the sacculus and the beam made of sacculus, the use elastic material being coated on outside the sacculus
The distal end for tiing up layer and the outer wall of the inner tube are tightly connected, the proximal end and institute of the proximal end of the sacculus and the bond course
The outer wall for the outer tube stated is tightly connected.
Preferably, the sacculus dilating catheter has contraction state and expanded state, when the sacculus dilating catheter
When positioned at contraction state, the sacculus is in the state for being folded into more valves, and the bond course is coated on outside the sacculus, is in
Contraction state；When the sacculus dilating catheter is located at expanded state, the sacculus is in the state of inflation, described
Bond course is strutted by the sacculus to swelling state.
Preferably, the developing ring of at least one is additionally provided in the inner tube.
Preferably, the balloon dilatation catheter further include the stress spread pipe that the proximal outer tube is set, with it is described
Stress spread pipe the Y-type conduit seat that is connected of proximal end.
Preferably, the inflation formed between the inner tube and the outer tube for inflating into the sacculus is logical
Road, the distal end of the outer tube form the inflating port inflated into the sacculus, the Y-type conduit seat include for it is interior
The first conduit that pipe is connected, the second conduit being connected with the filling channel.
Preferably, the hardness of the bond course is made of silica gel or latex or polyurethane material, it is preferable that described
Bond course is made of TPU material, and the TPU (Thermoplastic polyurethanes) is entitled thermoplastic poly ammonia
Ester elastomer rubber.
Preferably, the hardness of the bond course is 20a~50a.
Preferably, the sacculus, outer tube are made of polyamide polymer, and the inner tube is single layer polyamide polymer
Or multilayer materials are made.
According to the above aspect of the present invention, the application has at least the following advantages:
A kind of sacculus dilating catheter described herein is provided with bond course compared with prior art outside sacculus, works as ball
When capsule is in more valve folded states, the bond course is coated on outside the sacculus, is in contraction state, is worked as inflated
Afterwards, sacculus is gradually expanded from more valve folded states, and in the process, more valves of the sacculus twist, due to bond course
There is very high elasticity, more valves drive the bond course to reverse during torsion；When sacculus is shunk from swelling state, institute
The bond course turn-back stated generates a reverse rotation power and restoring force to sacculus, the sacculus is driven to shrink on one side, on one side
Folding is in more valves, so that sacculus can almost be completely recovered to original folded state.
Only under the reverse rotation power and restoring force of bond course, there is the flap sacculus of certain memory function that can just be returned to folding
Folded state, rotary force make sacculus reply three wings or multiple wing, and convergent force makes sacculus return the state fitted closely.
And after having bond course, sacculus can still be retracted to the state of original very little size after repeatedly having expanded,
Allow product repeated and expanded into new lesion, that is, save the cost of product, also facilitates doctor's
Operation, and can easily withdraw in sheath and take out after expansion is completed.
Above description is only the general introduction of technical scheme, in order to better understand the technological means of the application,
And can be implemented in accordance with the contents of the specification, with the preferred embodiment of the application and cooperate attached drawing below detailed description is as follows.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of sacculus dilating catheter in the prior art；
Fig. 2 is the cross section structure schematic diagram in contraction state of sacculus dilating catheter in the prior art；
Fig. 3 is structural schematic diagram of the sacculus dilating catheter in the prior art in contraction state；
Fig. 4 is the structural schematic diagram of sacculus dilating catheter described herein；
Fig. 5 is structural schematic diagram of the sacculus dilating catheter described herein in expanded state；
Fig. 6 is cross section structure schematic diagram of the sacculus dilating catheter described herein in folded state；
Fig. 7 is structural schematic diagram of the sacculus dilating catheter described herein in folded state；
Fig. 8 is stress schematic diagram of the sacculus dilating catheter described herein in bond course during the filling process；
Fig. 9 is the stress schematic diagram of sacculus dilating catheter described herein bond course in contraction process；
Figure 10 is the structural schematic diagram of the balloon dilatation catheter of the embodiment of the present application one；
Figure 11 is the structural schematic diagram of the balloon dilatation catheter of the embodiment of the present application two；
Figure 12 is the structural schematic diagram of the balloon dilatation catheter of the embodiment of the present application two,
Wherein: 1 ', sacculus；3 ', developing ring；4 ', inner tube；5 ', outer tube；6 ', stress spread pipe；7 ', catheter block；1, ball
Capsule；2, bond course；3, developing ring；4, inner tube；5, outer tube；6, stress spread pipe；7, catheter block.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the application is described in further detail.Implement below
Example is not limited to scope of the present application for illustrating the application.
As shown in figure 4, a kind of sacculus dilating catheter described herein, the dilating catheter includes outer tube, part position
It is stretched out in the distal portions of the inner tube in outer tube, inner tube from the distal end of the outer tube, the dilating catheter further includes that can roll over
Build up the sacculus of more valves, be coated on outside the sacculus using bond course made of elastic material, the distal end of the sacculus
It is tightly connected with the distal end of the bond course and the outer wall of the inner tube, the proximal end of the sacculus and the bond course
Proximal end and the outer wall of the outer tube be tightly connected.The developing ring of at least one is additionally provided in the inner tube.Described
Balloon dilatation catheter further includes the stress spread pipe that the proximal outer tube is arranged in, is connected with the proximal end of the stress spread pipe
The Y-type conduit seat connect.The filling channel for inflating into the sacculus is formed between the inner tube and the outer tube,
The distal end of the outer tube forms the inflating port inflated into the sacculus, and the Y-type conduit seat includes being used for and inner tube
The first conduit being connected, the second conduit being connected with the filling channel.The hardness of the bond course be silica gel or
Latex or polyurethane material are made, it is preferable that the bond course is made of TPU material, the TPU
(Thermoplastic polyurethanes) is entitled thermoplastic polyurethane elastomer rubber.The bond course it is hard
Degree is 20a~50a.The sacculus, outer tube are made of polyamide polymer, the inner tube be single layer polyamide polymer or
Multilayer materials are made.
As shown in figure 5, the sacculus dilating catheter is in expanded state, the sacculus is in the state of inflation,
The bond course is strutted by the sacculus to swelling state.
As shown in Figures 6 and 7, the sacculus dilating catheter, which is in, is located at contraction state, and the sacculus is more in being folded into
The state of valve, the bond course are coated on outside the sacculus, are in contraction state.
As shown in figure 8, the stress for sacculus dilating catheter described herein in bond course during the filling process is illustrated
Figure, arrow direction are the Impact direction of the bond course, and after inflated, sacculus is gradually expanded from more valve folded states,
In the process, more valves of the sacculus twist, and since bond course has very high elasticity, more valves are during torsion
Drive the bond course torsion.
As shown in figure 9, the stress for sacculus dilating catheter described herein bond course in contraction process is illustrated
Figure, arrow direction are the Impact direction of the bond course, and when sacculus is shunk from swelling state, the bond course is reversely turned round
Turning, a reverse rotation power and restoring force are generated to sacculus, the sacculus is driven to shrink on one side, an edge contraction is in more valves, so that
Sacculus can almost be completely recovered to original folded state.Only under the reverse rotation power and restoring force of bond course, there is certain note
The flap sacculus for recalling function can just be returned to the state of folding, and rotary force, which makes sacculus reply three wings or multiple wing, convergent force, to be made
It obtains sacculus and returns the state fitted closely.
In example 1, the manufacturing process of the sacculus dilating catheter is as follows, by PTA foley's tube 4.0 × 40
Sacculus carries out three wingfold, and then by internal diameter 1.1mm, the constraint pipe of wall thickness 0.15mm cuts the length of 65mm.Fetter the material of pipe
Material is TPU material, hardness 40a.It is in sacculus in constraint pipe
Between position.By glue drip to the constraint pipe of balloon distal and inner tube, sacculus pin gap in three is subjected to adhering and sealing；It will
Glue, which drips to, carries out adhering and sealing at the gap for fettering pipe, sacculus pin and outer tube of balloon proximal.Sacculus after completing
Dilating catheter is as shown in Figure 10.
In example 2, the manufacturing process of the sacculus dilating catheter is as follows, by PTA, 5.0 × 100 sacculus into
Then width 65mm, thickness 0.05mm are used in three wingfold of row, hardness is the high elasticity silica glue film of 30a, close along a direction
1-2 circle is wrapped up, as shown in Figure 11 and 12, is then bonded together in axial direction with glue, forms the shape of a tubulose.Then again
The both ends of film are attached sealing with sacculus pin and inner and outer tubes respectively, form a closed wrap film.
The present invention mainly protects the material property of the bond course structure and bond course wrapped up outside sacculus.Bond course is necessary
There is soft (hardness is between 20a-50a) and there is elastomeric material (such as silica gel, latex, polyurethane material etc.) to fill
When, and the wall thickness of bond course cannot be too thick, otherwise influences whether the folded outer diameter of sacculus and passage capacity.If material is too hard
Perhaps wall thickness is too thick may make balloon dilatation pressure expand perhaps sacculus and can not fill completely to open or will lead to bond course
Tearing.The selection of sacculus dilating catheter described herein, what those skilled in the art can be realized according to the application
Effect is selected, and can be realized the effect to be realized of the application.
In the prior art, sacculus dilating catheter does not have the structure of bond course, and sacculus is after having expanded with regard to Memorability
It will become very poor, be difficult to be restored to the folded state of three wings or multiple wing, i.e., the enabled state for being restored to three wings or multiple wing
The state fitted closely that can not restore, this allows for sacculus can also compare even at the state overall size that release is shunk
Greatly, sacculus, which would become hard to be crossed into new stenotic lesion again, is expanded, and sacculus, since size is bigger, is being recycled in recycling
Also biggish resistance can be generated when in sheath, especially longer sacculus is more difficult to be recovered in sheath.And after having bond course,
Sacculus can still be retracted to the state of original very little size after repeatedly having expanded, and allow product is repeated to enter
New lesion is expanded, that is, saves the cost of product, also facilitates the operation of doctor, and can be light after expansion is completed
Pine withdraws in sheath and takes out.
The above is only the preferred embodiment of the application, is not intended to limit this application, it is noted that for this skill
For the those of ordinary skill in art field, under the premise of not departing from present techniques principle, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as the protection scope of the application.
Claims (8)
1. a kind of sacculus dilating catheter, it is characterised in that: the dilating catheter include outer tube, partially be located at outer tube in it is interior
The distal portions of pipe, inner tube are stretched out from the distal end of the outer tube, and the dilating catheter further includes the ball for caning be folded into more valves
Bond course, the distal end of the sacculus and the constraint made of capsule, the use elastic material being coated on outside the sacculus
The distal end of layer and the outer wall of the inner tube are tightly connected, the proximal end of the proximal end of the sacculus and the bond course with it is described
Outer tube outer wall be tightly connected.
2. a kind of sacculus dilating catheter according to claim 1, it is characterised in that: the sacculus dilating catheter, which has, to be received
Contracting state and expanded state, when the sacculus dilating catheter is located at contraction state, the sacculus is in be folded into more valves
State, the bond course are coated on outside the sacculus, are in contraction state；When the sacculus dilating catheter is located at full shape
When state, the sacculus is in the state of inflation, and the bond course is strutted by the sacculus to swelling state.
3. a kind of sacculus dilating catheter according to claim 1, it is characterised in that: be additionally provided at least in the inner tube
One developing ring.
4. a kind of sacculus dilating catheter according to claim 1, it is characterised in that: the sacculus dilating catheter further includes
The stress spread pipe that the proximal outer tube is set, the Y-type conduit seat being connected with the proximal end of the stress spread pipe.
5. a kind of sacculus dilating catheter according to claim 4, it is characterised in that: the inner tube and the outer tube it
Between form filling channel for inflating into the sacculus, the distal end of the outer tube forms into the sacculus and inflates
Inflating port, the Y-type conduit seat includes the first conduit for being connected with inner tube, is connected with the filling channel
The second conduit.
6. a kind of sacculus dilating catheter according to claim 1, it is characterised in that: the hardness of the bond course is silica gel
Or latex or polyurethane material are made.
7. a kind of sacculus dilating catheter according to claim 6, it is characterised in that: the hardness of the bond course is 20a
~50a.
8. a kind of sacculus dilating catheter according to claim 1, it is characterised in that: the sacculus, outer tube are polyamide
Class material is made, and the inner tube is made of single layer polyamide polymer or multilayer materials.
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| CN2017111662682 | 2017-11-21 | ||
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| CN201711250210.6A Active CN107929918B (en) | 2017-11-21 | 2017-12-01 | A balloon dilatation catheter |
| CN201721652322.XU Active CN208741719U (en) | 2017-11-21 | 2017-12-01 | A balloon dilatation catheter |
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| CN201711250210.6A Active CN107929918B (en) | 2017-11-21 | 2017-12-01 | A balloon dilatation catheter |
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Cited By (2)
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| CN115103703A (en) * | 2020-11-02 | 2022-09-23 | 元心科技(深圳)有限公司 | Long balloon for balloon expandable stent system and preparation method thereof |
| CN116687546A (en) * | 2023-06-29 | 2023-09-05 | 康沣生物科技(上海)股份有限公司 | Cryoablation Catheters and Devices |
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| CN110025874B (en) * | 2019-04-24 | 2020-01-07 | 广州启骏生物科技有限公司 | Balloon dilatation catheter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115103703A (en) * | 2020-11-02 | 2022-09-23 | 元心科技(深圳)有限公司 | Long balloon for balloon expandable stent system and preparation method thereof |
| CN116687546A (en) * | 2023-06-29 | 2023-09-05 | 康沣生物科技(上海)股份有限公司 | Cryoablation Catheters and Devices |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107929918B (en) | 2023-06-16 |
| CN107929918A (en) | 2018-04-20 |
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