CN109107023A - Expand guide - Google Patents

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Publication number
CN109107023A
CN109107023A CN201810869253.0A CN201810869253A CN109107023A CN 109107023 A CN109107023 A CN 109107023A CN 201810869253 A CN201810869253 A CN 201810869253A CN 109107023 A CN109107023 A CN 109107023A
Authority
CN
China
Prior art keywords
expansion
guide
diameter
elastic
connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810869253.0A
Other languages
Chinese (zh)
Inventor
李刚
汤惠涵
李哲
郭蕊
马才
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Weigao Group Medical Polymer Co Ltd
Original Assignee
Shandong Weigao Group Medical Polymer Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Weigao Group Medical Polymer Co Ltd filed Critical Shandong Weigao Group Medical Polymer Co Ltd
Priority to CN201810869253.0A priority Critical patent/CN109107023A/en
Publication of CN109107023A publication Critical patent/CN109107023A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0074Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M25/1002Balloon catheters characterised by balloon shape
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M29/00Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02Dilators made of swellable material
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M29/00Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02Dilators made of swellable material
    • A61M2029/025Dilators made of swellable material characterised by the guiding element
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M2210/00Anatomical parts of the body
    • A61M2210/10Trunk
    • A61M2210/1078Urinary tract

Abstract

The present invention provides a kind of expansion guide, including guide main body, expansion body, guide seat and sliding sleeve, the guide main body successively includes guidance part, expansion body portion and main part, sliding sleeve sliding is placed on main part, main part is connected far from expansion body one end with guide seat, the expansion body includes that no less than 4 elastic skeletons, the elastic skeleton both ends are respectively equipped with elastic skeleton connector, and elastic skeleton is set at expansion body portion by elastic skeleton connector.The beneficial effects of the invention are as follows due to the adoption of the above technical scheme, new mode is provided for the intubation of conduit, intubation resistance is small, and patient suffering is small.

Description

Expand guide
Technical field
The invention belongs to the field of medical instrument technology, especially a kind of expansion guide.
Background technique
It is intubated as clinical common medical procedure, plays a significant role in clinic.Being intubated common effect is by leading Pipe swaps the intracorporal liquid substance of chamber a certain in human body with the external world, such as catheter exports intravesical urine, stomach Pipe injects spoon meat to stomach, and diversion pipe excludes the intracorporal fester of chamber, crimson blood external etc..
Conduit mainly has silica gel, rubber, EVA, PVC etc., and head end and tube body are partially soft.During intubation, work as channel When more narrow, it is excessive to have an intubation resistance, the problem of difficult intubation.By taking catheter as an example, some patients are because urethra is narrow Situations such as narrow, hyperplasia of prostate, canceration, neck of urinary bladder hardening, causes urethra internal resistance bigger than normal, greatly increases and sets pipe difficulty.It is existing to face With on the other hand orificium urethrae externum is fixed usually after disinfection orificium urethrae externum and surrounding tissue, another hand is direct or uses tweezers for bed urethral catheterization Deng holding catheter, be inserted into from urethral orifice, in face of resistance bending and when narrow situation, then need more firmly to be placed in, to patient with Carry out huge pain, causes the damage of mucous membrane of urethra, cause the destruction of urologic structure, increase the risk of urinary tract infection.Stomach tube is inserted During pipe when passing through cardia, the problem of equally existing difficult intubation.
It is had the following problems in the catheterization procedure of existing clinic: the needs when catheter head top marches at ankylurethria External force is increased to promote, shear action can occur for apical head and stenosis tissue, even by stenosis, tissue Inner membrance also suffers from serious contusion and creates conditions for microorganism infection, and the measures such as catheter outer surface coating lubricating oil produce little effect.
A kind of guide wire catheter of the disclosure of the invention of application number 2009200275009 comprising seal wire and catheter, urethral catheterization It is equipped with seal wire in pipe, first seal wire is inserted into catheter, makes catheter that there is certain rigidity, after catheter is inserted into bladder, Seal wire is extracted out from catheter again.
However, above-mentioned intubation problem encountered is only to be delayed in the degree limited to very much even if there is the presence of seal wire Solution, there is no fundamentally reduce to lead intubation resistance.
Summary of the invention
The object of the present invention is to provide a kind of expansion guide, it is big especially to solve resistance at the top of conduit in catheterization procedure Problem.
The technical scheme is that
A kind of expansion guide, including guide main body, expansion body, guide seat and sliding sleeve, the guide master Body successively includes guidance part, expansion body portion and main part, and sliding sleeve sliding is placed on main part, and main part is far from expansion body one end It is connected with guide seat, the expansion body includes no less than 4 elastic skeletons, and the elastic skeleton both ends are respectively equipped with elastic bone Frame connector, elastic skeleton are set at expansion body portion by elastic skeleton connector.
It needs to expand guide when use and tubes fit uses, by expansion guide insertion conduit, guide expansion The guidance part of device and expansion body portion are stretched out from the through-hole of catheter proximal end, and expansion body portion is provided with the expansion body of lantern structure, Expansion body is started by being placed on sliding sleeve outside main part, in use, operator by sliding sleeve forward with respect to main part Sliding, sliding sleeve squeeze the expansion body positioned at expansion body portion in the axial direction, and the elastic skeleton of expansion body is in sliding sleeve Effect is lower to occur Bending Deformation, and multiple groups elastic skeleton forms the extended region of lantern-shaped in urethra, outside expansion guide The advance of conduit dredged path.
The elastic skeleton connector is annular shape, the internal diameter and the diameter phase in expansion body portion of the elastic skeleton connector Cooperation, diameter of the outer diameter of elastic skeleton connector with guidance part close to expansion body portion one end match.Elastic skeleton connector Cooperate elastic skeleton to form an independent extension fixture, be directly connected to elastic skeleton with guidance part or sliding sleeve, The advantage is that elastic skeleton will not be distorted, to make each elasticity of expansion body when sliding sleeve is rotated relative to main part Skeleton expansion is uniform.Expansion body can make it only receive the extruding from sliding sleeve, without connecing relative to guide body rotation The power in generated circumferential direction is rotated by sliding sleeve.
The elastic skeleton is connected by arc connector with elastic skeleton connector, and the radian of the arc connector is 0.1-2°.When being squeezed, bending direction is simultaneously not fixed elastic skeleton, is both possible to be bent outwardly, it is also possible to inwardly curved The radian of song, arc connector provides guidance for the bending direction of elastic skeleton, is bent outwardly it, to reach lantern-shaped Expansion effect.
The elastic skeleton material be elasticity can restorer, such as Nitinol, medical stainless steel, beryllium-bronze, spring steel Deng.
The expansion external surface is equipped with the elastic covering film for household with expansion mates.The inner sidewall and bullet of the elastic covering film for household Property skeleton is fixedly connected.Elastic covering film for household increases the contact area of expansion body and urethra, reduces pressure, reduces expansion body expansion to trouble Sense of discomfort caused by person.
The guide seat includes guide seat lower part, guide seat top and the block set for being placed on guide seat top, institute It states block set and is equipped with the circular hole matched with main part diameter close to guide body side, the diameter of the circular hole is less than sliding sleeve The diameter of pipe.Block set and guide seat top opposite can be slided, and guide main body passes through circular hole and fixes with guide seat top, covers When the opposite guide seat top of seat is slided, casing is pushed to move forward, guide seat and block set outer diameter are larger, convenient for expansion Guide is opened to be operated.
The guide seat outer surface of upper is equipped with the first screw thread, and set base inner surface is equipped with the matched with the first screw thread Two screw threads.Make block set relative to guide seat ionized motion by screw thread, can also effectively to the sliding sleeve to have advanced into Row limit, the sliding sleeve of advance has the tendency that reset under the reaction of expansion body, after limit, operator can be made to vacate both hands Carry out the operation of catheter.
Optionally, the guidance part is arc.The guidance part of arc is elastic material, and the material of guidance part includes such as, gathering Vinyl chloride, thermoplastic elastomer (TPE), polyurethane, polypropylene, ABS, nylon etc..For not being the body passageway of straight line, arc is led Draw portion to be easier to conduct thrust.
The top of the guidance part is cone or hemispherical, and the guidance part basal diameter and main part diameter match It closes.
The advantages and positive effects of the present invention are: due to the adoption of the above technical scheme, expansion guide is that intubation mentions New mode is supplied, intubation resistance is small, and patient suffering is small.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of expansion body contraction state of the present invention
Fig. 2 is the cross-sectional view after expansion body of the present invention is softened
Fig. 3 is the structural schematic diagram in Fig. 2 at A
Fig. 4 is the structural schematic diagram in Fig. 2 at B
In figure:
1, guide main body 2, expansion body 3, guide seat
4, sliding sleeve 11, guidance part 12, expansion body portion
13, main part 21, elastic skeleton 22, connector
23, elastic skeleton connector 31, guide seat lower part 32, guide seat top
33, block set
Specific embodiment
Embodiment 1
As shown in Figs 1-4,
A kind of expansion guide, including guide main body 1, expansion body 2, guide seat 3 and sliding sleeve 4, the guiding Device main body 1 successively includes guidance part 11, expansion body portion 12 and main part 13, and the sliding of sliding sleeve 4 is placed on main part 13, main part 13 are connected far from 2 one end of expansion body with guide seat 3, and the expansion body 2 includes 6 elastic skeletons 21, the elastic skeleton 21 Both ends are respectively equipped with elastic skeleton connector 23, and elastic skeleton 21 is set to expansion body portion 12 by elastic skeleton connector 23 Place.
The elastic skeleton connector 23 is annular shape, internal diameter and the expansion body portion 12 of the elastic skeleton connector 23 Diameter matches, and diameter of the outer diameter of elastic skeleton connector 23 with guidance part 11 close to 12 one end of expansion body portion matches.
The elastic skeleton 21 is connected by arc connector 22 with elastic skeleton connector 23, the arc connector 22 Radian be 0.3 °.
2 outer surface of expansion body is equipped with the elastic covering film for household matched with expansion body 2.
The inner sidewall of the elastic covering film for household is fixedly connected with elastic skeleton 21.
The guide seat 3 includes guide seat lower part 31, guide seat top 32 and the set for being placed on guide seat top Seat 33, the block set 33 are equipped with the circular hole that matches with 13 diameter of main part close to 1 side of guide main body, the circular hole it is straight Diameter is less than the diameter of sliding sleeve 4.
32 outer surface of guide seat top is equipped with the first screw thread, and 33 inner surface of block set is equipped with and matches with the first screw thread The second screw thread.
The top of the guidance part 11 is hemispherical, and 11 basal diameter of guidance part is matched with 13 diameter of main part.
Embodiment 2
As shown in Figs 1-4
A kind of expansion guide, including guide main body 1, expansion body 2, guide seat 3 and sliding sleeve 4, the guiding Device main body 1 successively includes guidance part 11, expansion body portion 12 and main part 13, and the sliding of sliding sleeve 4 is placed on main part 13, main part 13 are connected far from 2 one end of expansion body with guide seat 3, and the expansion body 2 includes 6 elastic skeletons 21, the elastic skeleton 21 Both ends are respectively equipped with elastic skeleton connector 23, and elastic skeleton 21 is set to expansion body portion 12 by elastic skeleton connector 23 Place.
The elastic skeleton connector 23 is annular shape, internal diameter and the expansion body portion 12 of the elastic skeleton connector 23 Diameter matches, and diameter of the outer diameter of elastic skeleton connector 23 with guidance part 11 close to 12 one end of expansion body portion matches.
The elastic skeleton 21 is connected by arc connector 22 with elastic skeleton connector 23, the arc connector 22 Radian be 0.3 °.
2 outer surface of expansion body is equipped with the elastic covering film for household matched with expansion body 2.
The inner sidewall of the elastic covering film for household is fixedly connected with elastic skeleton 21.
The guide seat 3 includes guide seat lower part 31, guide seat top 32 and the set for being placed on guide seat top Seat 33, the block set 33 are equipped with the circular hole that matches with 13 diameter of main part close to 1 side of guide main body, the circular hole it is straight Diameter is less than the diameter of sliding sleeve 4.
32 outer surface of guide seat top is equipped with the first screw thread, and 33 inner surface of block set is equipped with and matches with the first screw thread The second screw thread.
The guidance part 11 is arc.The guidance part 11 is elastic material, and the material is any one in X, Y.
The top of the guidance part 11 is hemispherical, and 11 basal diameter of guidance part is matched with 13 diameter of main part.
Embodiment 3
As shown in Figs 1-4
A kind of expansion guide, including guide main body 1, expansion body 2, guide seat 3 and sliding sleeve 4, the guiding Device main body 1 successively includes guidance part 11, expansion body portion 12 and main part 13, and the sliding of sliding sleeve 4 is placed on main part 13, main part 13 are connected far from 2 one end of expansion body with guide seat 3, and the expansion body 2 includes 6 elastic skeletons 21, the elastic skeleton 21 Both ends are respectively equipped with elastic skeleton connector 23, and elastic skeleton 21 is set to expansion body portion 12 by elastic skeleton connector 23 Place.
The elastic skeleton connector 23 is annular shape, internal diameter and the expansion body portion 12 of the elastic skeleton connector 23 Diameter matches, and diameter of the outer diameter of elastic skeleton connector 23 with guidance part 11 close to 12 one end of expansion body portion matches.
The elastic skeleton 21 is connected by arc connector 22 with elastic skeleton connector 23, the arc connector 22 Radian be 0.3 °.
2 outer surface of expansion body is equipped with the elastic covering film for household matched with expansion body 2.
The inner sidewall of the elastic covering film for household is fixedly connected with elastic skeleton 21.
The guide seat 3 includes guide seat lower part 31, guide seat top 32 and the set for being placed on guide seat top Seat 33, the block set 33 are equipped with the circular hole that matches with 13 diameter of main part close to 1 side of guide main body, the circular hole it is straight Diameter is less than the diameter of sliding sleeve 4.
The block set 33 is slidably connected with guide seat top 32, and guide seat top 32 is equipped with limiting device.The limit Position device includes the gag lever post for running through guide seat top 32 along 32 radial direction of guide seat top, the length of the gag lever post Greater than the diameter on guide seat top 32, the middle part of the gag lever post is equipped with elastomer.
For guide main body 1 by 2 dilating urethra of expansion body, final effect is to make to be placed on the conduit outside expansion guide Advance.When expansion body 2 is supported out, by the extruding of urethral wall, the trend of the oriented contract of expansion body 2, sliding sleeve 4 also has The trend resetted backward, block set 33 are in contact with sliding sleeve 4, and block set 33 also has the tendency that resetting backward, at this time, it may be necessary to will slide Dynamic casing 4 and guide main body 1 are relatively fixed, that is, need block set 33 and 32 positions of guide seat top is relatively fixed, To keep the deformation of expansion body 2.It is equipped with elastomer in limiting device, under normal condition, elastomer is compressed, the length of gag lever post Degree is equal to the internal diameter of block set 33, and gag lever post is located in block set 33, when 33 forward slip of block set, 33 end of block set and gag lever post point From the length of the expansion of gag lever post elastomer, gag lever post is greater than 33 internal diameter of block set, plays restriction effect to the reset of block set 33.
The top of the guidance part 11 is hemispherical, and 11 basal diameter of guidance part is matched with 13 diameter of main part.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range Deng should still be within the scope of the patent of the present invention.

Claims (9)

1. a kind of expansion guide, it is characterised in that: described including guide main body, expansion body, guide seat and sliding sleeve Guide main body successively includes guidance part, expansion body portion and main part, and sliding sleeve sliding is placed on main part, and main part is far from expansion It opens body one end to be connected with guide seat, the expansion body includes no less than 4 elastic skeletons, and the elastic skeleton both ends are set respectively Flexible skeleton connector, elastic skeleton are set at expansion body portion by elastic skeleton connector.
2. expansion guide according to claim 1, it is characterised in that: the elastic skeleton connector is annular shape, institute The internal diameter for stating elastic skeleton connector is matched with the diameter in expansion body portion, and the outer diameter and guidance part of elastic skeleton connector are close The diameter of expansion body portion one end matches.
3. expansion guide according to claim 2, it is characterised in that: the elastic skeleton passes through arc connector and bullet Property skeleton connector be connected, the radian of the arc connector is 0.1-2 °.
4. expansion guide according to claim 1, it is characterised in that: the expansion external surface is equipped with and expansion body phase The elastic covering film for household of cooperation.
5. expansion guide according to claim 4, it is characterised in that: the inner sidewall and elastic skeleton of the elastic covering film for household It is fixedly connected.
6. expansion guide according to claim 1, it is characterised in that: the guide seat include guide seat lower part, Guide seat top and the block set for being placed on guide seat top, the block set is equipped with close to guide body side and main part The circular hole that diameter matches, the diameter of the circular hole are less than the diameter of sliding sleeve.
7. expansion guide according to claim 6, it is characterised in that: the guide seat outer surface of upper is equipped with first Screw thread, set base inner surface are equipped with the second screw thread matched with the first screw thread.
8. expansion guide according to claim 1, it is characterised in that: the guidance part is arc.
9. expansion guide according to claim 1, it is characterised in that: the top of the guidance part is cone or hemisphere Shape, the guidance part basal diameter are matched with main part diameter.
CN201810869253.0A 2018-08-02 2018-08-02 Expand guide Pending CN109107023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810869253.0A CN109107023A (en) 2018-08-02 2018-08-02 Expand guide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810869253.0A CN109107023A (en) 2018-08-02 2018-08-02 Expand guide

Publications (1)

Publication Number Publication Date
CN109107023A true CN109107023A (en) 2019-01-01

Family

ID=64851618

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810869253.0A Pending CN109107023A (en) 2018-08-02 2018-08-02 Expand guide

Country Status (1)

Country Link
CN (1) CN109107023A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110464424A (en) * 2019-07-30 2019-11-19 杭州市第三人民医院 A kind of urological department lithangiuria crushed stone
WO2023217976A1 (en) * 2022-05-12 2023-11-16 Boston Scientific Medical Device Limited Apparatus for biological tissue puncture expansion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110464424A (en) * 2019-07-30 2019-11-19 杭州市第三人民医院 A kind of urological department lithangiuria crushed stone
CN110464424B (en) * 2019-07-30 2020-06-12 杭州市第三人民医院 Urological department lithangiuria stone crushing structure
WO2023217976A1 (en) * 2022-05-12 2023-11-16 Boston Scientific Medical Device Limited Apparatus for biological tissue puncture expansion

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