CN208426244U - A kind of trochar applied to middle cerebral artery occlusion model - Google Patents
A kind of trochar applied to middle cerebral artery occlusion model Download PDFInfo
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- CN208426244U CN208426244U CN201721285112.1U CN201721285112U CN208426244U CN 208426244 U CN208426244 U CN 208426244U CN 201721285112 U CN201721285112 U CN 201721285112U CN 208426244 U CN208426244 U CN 208426244U
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- needle
- trochar
- puncture needle
- anchor tip
- cerebral artery
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Abstract
The utility model provides a kind of trochar applied to middle cerebral artery occlusion model, belongs to medical instruments field.The trochar is Ke Xunhuanliyong, including puncture needle, needle core, line bolt.Puncture needle includes needle body, fixed-wing, anchor tip, and it is that taper is connect with needle body bottom at the top of anchor tip, bottom is provided with a tapered opening that fixed-wing, which is fixed on the side of needle body,；Needle core includes needle core main body and fixed interface, is taper at the top of fixed interface, and conical tapers are identical as the opening taper of anchor tip bottom, guarantees that the two fits closely, and needle core is for fixing single unit system, playing the role of stopping blooding and preventing puncture needle from penetrating blood vessel；Line bolt is commercially available structure.Puncture needle is used to enter blood vessel, and needle core is pushed into puncture needle, prevents puncture needle from puncturing blood vessel, line bolt is inserted through needle core to target vascular site.The utility model structure is simple, operates convenient, low cost, and puncture needle, which enters blood vessel, can fix simultaneously, block hemostasis.
Description
Technical field
The utility model belongs to medical instruments field, is related to a kind of trochar applied to middle cerebral artery occlusion model.
Background technique
Cerebral apoplexy is a kind of acute cerebrovascular diseases, is since cerebral vessels rupture suddenly or because angiemphraxis leads to blood
It cannot flow into brain and cause one group of disease of brain tissue impairment, have the characteristics that disease incidence is high, the death rate is high and disability rate is high.
The possibility pathogenesis that this disease is sought using animal model, finding effective therapeutic agent and method has great society's meaning
Justice, and establishing stable animal pathological model is the key link for studying this disease, wherein middle cerebral artery occlusion (MCAO) model
It is generally considered standard focal cerebral ischemia in rats.
When the modus operandi of the wired bolt of the key technology of MCAO modeling, inserted mode, insertion depth, head end diameter, embolism
Between etc..At present after general anaesthesia rat, disinfection, throat skin is cut, blunt separation subcutaneous tissue, separation arteria carotis communis, in neck
Artery, vena jugularis externa ligature arteria carotis communis proximal part, external carotid artery, internal carotid hanging wire.Folder closes arteria carotis communis distal end, uses
Eye scissors clip, insertion line bolt on arteria carotis communis, sew up the incision after ligaturing the line bolt of fixed insertion.Wherein from cut blood vessel to
Insertion line bolt to designated position is the key link of operation.Existing method exists directly in arteria carotis communis upper opening and is cutting blood
The disadvantage that operating space is small when pipe, amount of bleeding is more, operation difficulty is big.Operation opening size is not easy to determine, excessive easily to cause blood vessel
Fracture, bleeding, too small line bolt are then not easy to be inserted into.Above problem causes operating time extension, surgical injury greatly so as to cause mould
The failure of type and unstable.
Utility model content
In view of the problems of the existing technology, the utility model provides a kind of set applied to middle cerebral artery occlusion model
Pipe needle, the modeling which is suitable for middle cerebral artery occlusion model are performed the operation.
In order to reach the goals above, the technical solution of the utility model is:
A kind of trochar applied to middle cerebral artery occlusion model, the trochar is Ke Xunhuanliyong, including puncture needle 1,
Needle core 2, line bolt 3.Puncture needle 1 is used to enter blood vessel, and needle core 2 is pushed into puncture needle 1, prevents puncture needle 1 from puncturing blood vessel, line bolt 3
Needle core 2 is inserted through to target vascular site.
The puncture needle 1 is for penetrating blood vessel, including hollow needle body 1-1, fixed-wing 1-2, anchor tip 1-3.Gu
The side that wing 1-2 is fixed on needle body 1-1 is determined, for operation and postoperative fixation；Anchor tip 1-3 is hollow cylindrical structure,
Its top is taper, and top is connect with the bottom needle body 1-1, and bottom is provided with a tapered opening.The puncture needle 1 is stainless steel
Material.The anchor tip 1-3 is plastic material.The internal diameter of the needle body 1-1 is 0.6-0.8mm.
The needle core 2 is hollow structure, including needle core main body 2-1 and fixed interface 2-2.The outer diameter of needle core main body 2-1
Less than needle body 1-1 internal diameter, length is greater than needle body 1-1 length；The fixed interface 2-2 is boss structure, is cone at the top of boss
Shape, conical tapers are identical as the opening taper of the bottom anchor tip 1-3, guarantee that the two fits closely, and are cylinder in the middle part of boss
Body structure, cylindrical body outer diameter are less than the internal diameter of anchor tip 1-3, and boss bottom is disc structure, and the outer diameter of disc structure is greater than
Anchor tip 1-3 outer diameter, when needle core main body 2-1 is fully inserted into inside needle body 1-1, fixed interface 2-2 is along the bottom anchor tip 1-3
Inside portion's opening insertion anchor tip 1-3, the disc structure of boss bottom plays fixed function.Needle core 2 is for fixed whole dress
It sets, can play the role of stopping blooding and prevents puncture needle from penetrating blood vessel.The needle core main body 2-1 internal diameter is 0.35-0.55mm.
The line bolt 3 is commercially available structure, including silica gel embolus 3-1, main body 3-2.Main body 3-2 diameter is much smaller than needle core 2-
1 internal diameter is 0.22-0.28mm.The top main body 3-2 is coated with silica gel embolus 3-1 to blocking blood flow, silica gel embolus 3-1's
Diameter is slightly less than arteria cerebri media diameter, is 0.32-0.38mm.
The device makes embolus reach 2 head of needle core, then needle core 2 is together with line bolt before use, line bolt 3 penetrates inside needle core 2
3 are pushed into inside puncture needle 1, guarantee 2 head end of needle core apart from 1 head end 0.5mm of puncture needle.Use process are as follows: firstly, puncture needle 1
It punctures vascular wall and enters blood vessel, then needle core 2-1 is pushed completely into, fixed interface 2-2 rises from bottom insertion anchor tip 1-3
To the effect of fixed device and reduction bleeding.Finally, line bolt 3 is slowly pushed into, adjustment angle and position in push-on process enter
Target blood blocks corresponding tissue blood flow.
The effect and benefit of the utility model be compared to existing blood vessel clip method, devise a portable and effective,
The simple trochar of structure enters blood vessel, while trochar that is fixed, blocking hemostasis by puncture needle.Compensate for current procedure
Operate the limitation in openings of sizes, amount of bleeding, operating time, operating field, utility model setting suitable for MCAO models in rats
It is standby, it is representative strong, operation is convenient, low cost the features such as.
Detailed description of the invention
Fig. 1 is the overall structure diagram of trochar.
Fig. 2 is the structural schematic diagram of each component of trochar；(a) it is puncture needle, (b) is needle core, (c) is line bolt.
Fig. 3 is the use schematic diagram of trochar；(a) structure chart that anterior cannula needle is used for device, (b) used for device
The structure chart of journey middle sleeve needle is (c) structure chart of trochar after device use.
Fig. 4 is the use schematic diagram of trochar insertion blood vessel；(a) structure chart when blood vessel is had just enter into for puncture needle 1, (b)
Enter blood vessel for puncture needle, structure chart when needle core is pushed completely into enters the structure chart of target blood (c) for line bolt 3.
In figure: 1 puncture needle；2 needle cores；3 line bolts；1-1 needle body；1-2 fixed-wing；1-3 anchor tip；2-1 needle core main body；2-
2 anchor tips；3-1 silica gel embolus；3-2 main body.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with technical solution and attached drawing.
A kind of trochar applied to middle cerebral artery occlusion model, including puncture needle 1, needle core 2, line bolt 3.
Puncture needle 1 is for penetrating blood vessel, including hollow needle body 1-1, fixed-wing 1-2, hollow anchor tip 1-3, three
Person is structure as a whole.Fixed-wing 1-2 is fixed on the side of needle body 1-1；Anchor tip 1-3 is hollow cylindrical structure, top
Portion is taper, and top is connect with the bottom needle body 1-1, and bottom is provided with a tapered opening.The puncture needle 1 is stainless steel
Matter.The anchor tip 1-3 is plastic material.The internal diameter of needle body 1-1 is 0.7mm.Needle core 2 is hollow structure, including needle core
2-1 and fixed interface 2-2；Needle core 2-1 internal diameter is 0.5mm, and needle core 2-1 length is greater than needle body 1-1 length；The fixed interface
2-2 is boss structure, is taper at the top of boss, conical tapers are identical as the opening taper of the bottom anchor tip 1-3, in boss
Portion is cylindrical structure, and cylindrical body outer diameter is less than the outer diameter of anchor tip 1-3, and boss bottom is disc structure, disc structure
Outer diameter is greater than anchor tip 1-3 outer diameter.Line bolt 3 is commercially available structure, including silica gel embolus 3-1, main body 3-2；Main body 3-2 is commercially available
Suppleness appropriateness nylon embolus line, a diameter of 0.25mm, the top main body 3-2 is coated with silica gel embolus 3-1, a diameter of
0.34mm。
Claims (8)
1. a kind of trochar applied to middle cerebral artery occlusion model, which is characterized in that the trochar includes puncture needle
(1), needle core (2), line bolt (3)；Puncture needle (1) is used to enter blood vessel, and needle core (2) is pushed into puncture needle (1), prevents puncture needle
(1) blood vessel is punctured, line bolt (3) is inserted through needle core (2) to target vascular site；
The puncture needle (1) includes hollow needle body (1-1), fixed-wing (1-2), anchor tip (1-3)；Fixed-wing (1-2)
It is fixed on the side of needle body (1-1), for operation and postoperative fixation；Anchor tip (1-3) is hollow cylindrical structure, top
Portion is taper, and top is connect with the bottom needle body (1-1), and bottom is provided with a tapered opening；
The needle core (2) is hollow structure, including needle core main body (2-1) and fixed interface (2-2)；Needle core main body (2-1) is outside
Diameter is less than needle body (1-1) internal diameter, and length is greater than needle body (1-1) length；The fixed interface (2-2) is boss structure, boss
Top is taper, and conical tapers are identical as the opening taper of the bottom anchor tip (1-3), guarantees that fixed interface (2-2) is complete
When insertion anchor tip (1-3) is interior；Needle core (2) is for fixing single unit system, stopping blooding and prevent puncture needle from penetrating blood vessel；
The line bolt (3) includes silica gel embolus (3-1), main body (3-2)；Main body (3-2) diameter is less than the interior of needle core (2) -1
Diameter；The top main body (3-2) is coated with silica gel embolus (3-1) to blocking blood flow, and diameter is less than arteria cerebri media diameter.
2. a kind of trochar applied to middle cerebral artery occlusion model according to claim 1, which is characterized in that described
Needle body (1-1) internal diameter be 0.6-0.8mm.
3. a kind of trochar applied to middle cerebral artery occlusion model according to claim 1 or 2, which is characterized in that
Needle core main body (2-1) internal diameter is 0.35-0.55mm.
4. a kind of trochar applied to middle cerebral artery occlusion model according to claim 1 or 2, which is characterized in that
Main body (3-2) internal diameter is 0.22-0.28mm；The diameter of silica gel embolus (3-1) is 0.32-0.38mm.
5. a kind of trochar applied to middle cerebral artery occlusion model according to claim 3, which is characterized in that described
Main body (3-2) internal diameter be 0.22-0.28mm；The diameter of silica gel embolus (3-1) is 0.32-0.38mm.
6. a kind of trochar applied to middle cerebral artery occlusion model, feature described according to claim 1 or 2 or 5 exist
In the puncture needle (1) is stainless steel material；The anchor tip (1-3) is plastic material.
7. a kind of trochar applied to middle cerebral artery occlusion model according to claim 3, which is characterized in that described
Puncture needle (1) be stainless steel material；The anchor tip (1-3) is plastic material.
8. a kind of trochar applied to middle cerebral artery occlusion model according to claim 4, which is characterized in that described
Puncture needle (1) be stainless steel material；The anchor tip (1-3) is plastic material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721285112.1U CN208426244U (en) | 2017-10-06 | 2017-10-06 | A kind of trochar applied to middle cerebral artery occlusion model |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721285112.1U CN208426244U (en) | 2017-10-06 | 2017-10-06 | A kind of trochar applied to middle cerebral artery occlusion model |
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| CN208426244U true CN208426244U (en) | 2019-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107550592A (en) * | 2017-10-06 | 2018-01-09 | 大连医科大学 | A kind of trochar applied to middle cerebral artery occlusion model |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107550592A (en) * | 2017-10-06 | 2018-01-09 | 大连医科大学 | A kind of trochar applied to middle cerebral artery occlusion model |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190125 Termination date: 20211006 |
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| CF01 | Termination of patent right due to non-payment of annual fee |