CN2117132U - Core induced indwelling trocar - Google Patents
Core induced indwelling trocar Download PDFInfo
- Publication number
- CN2117132U CN2117132U CN 92203788 CN92203788U CN2117132U CN 2117132 U CN2117132 U CN 2117132U CN 92203788 CN92203788 CN 92203788 CN 92203788 U CN92203788 U CN 92203788U CN 2117132 U CN2117132 U CN 2117132U
- Authority
- CN
- China
- Prior art keywords
- closing member
- nook closing
- sleeve pipe
- blood vessel
- trocar
- 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.)
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Abstract
The utility model discloses a core induced indwelling trocar, which is a clinical treating medical appliance. The aim of the utility model is that the trocar can be penetrated into the blood vessel exactly, a casing tube can be carried in, the casing tube can sneak in the blood vessel, and the indwelling purpose of the casing tube can be achieved. The utility model comprises a trocar core, the casing tube, a lever, a handle, etc., wherein, as the casing tube is provided with a blunt head, no special process is needed in the machining process; the trocar core is solid, and the trocar head forms a triangular pyramid. The resistance difference of the casing tube and the torcar core in the penetration is used as the motive power, the disjunction way of the lever is used as the prompt, and the sneak and the indwelling motion for the casing tube can be guarantee.
Description
This utility model is about the medical apparatus and instruments for clinical treatment.In daily treatment clinical course, the patient is generally adopted the vascular puncture art.By plastic bushing, connect blood vessel (arteries, vein blood vessel) and external transfusion device in patient's body, reach treatment and monitoring purpose.This needs and pin can accurately be penetrated blood vessel, and the grip pipe racks goes into, and it " is moved under water " in blood vessel, and is careless slightly, promptly can cause the sleeve pipe can not intravasation, has increased patient's misery, and this utility model can address this problem reliably.
Existing puncture needle and operating position thereof:
The puncture needle that uses is to use the blood vessel inner phase high principle of ambient pressure to external world now.Utilize the hollow metal needle, add plastic bushing etc. and puncture, when the metal needle point penetrated blood vessel, blood will flow out through the hollow needle tubing, do prompting with the method for seeing " blood back ", and existing method is distinguished the success or failure of puncturing by " blood back ".And have " blood back " to prove, and the metal needle point passes blood vessel, can not prove sleeve pipe in blood vessel, punctures successfully so there be " blood back " not show, and its successful key is that puncture needle can " move under water " and the grip pipe is brought in the blood vessel in blood vessel.With the blood vessel inner phase high principle of ambient pressure to external world, can not prove directly that sleeve pipe is in blood vessel.
In puncture, when " blood back " arranged, if the angle that also remains unchanged continues inserting needle, nook closing member can be worn out the blood vessel rear wall so that sleeve pipe is difficult in the blood vessel and " moves under water " like this; If motionless nook closing member pushes sleeve pipe.Whether do not enter into blood vessel because know sleeve pipe, so be difficult to guarantee that sleeve pipe " moves under water " in blood vessel yet.In use, if address this problem, will be with patient's experience, the patient is the sensation of hands usually." falling through " when promptly whether penetrating blood vessel sense, or with the visuognosis needle point whether in blood vessel, add the angle of timely conversion pin and blood vessel, reach the purpose that pin " moves under water " in blood vessel.And having " blood back " can only play proof to said method, the big proof of " blood back " amount translation-angle is correct; If be subjected to factor affecting such as the thin or intravascular pressure of the internal diameter of pin is low in time " blood back ", will certainly increase the blindness of puncture.So the method for " blood back " can not be represented the puncture success or failure directly, accurately.There is above-mentioned deficiency in the prior art, reduced puncture success rate to a great extent, brought very big misery, though on manufacturing, technology, improved precision to the patient, but since the deficiency that exists on its principle, the puncture success rate so existing puncture needle fails directly effectively to improve.
This utility model technical characterictic and operating position:
The purpose of this utility model is to provide a kind of puncture success or failure system that accurately, directly shows.With real core pin, enter " lead " of human vas as sleeve pipe.The trocar " is moved under water " in blood vessel and can put and stay in the blood vessel, in time be prompted to the patient of puncture.
Can " move under water " in blood vessel because the key of vascular puncture art success is a sleeve pipe, key issue to be solved be needle point one intravasation, loses the ability that punctures again at once.
Real core induction disconnection formula indwelling trocar provided by the utility model, be to have lost the principle that the resistance generation " falls through " after penetrating blood vessel with nook closing member, resistance difference in puncture is a power with sleeve pipe and nook closing member, points out, guarantees that in the mode that lever disconnects sleeve pipe " moves under water " and indwelling in blood vessel.
Real core induction disconnection formula indwelling trocar provided by the utility model as shown in Figure 1, comprises (1) nook closing member, (2) sleeve pipe, (4) lever, (5) handle.Nook closing member (1) adopts the real core circle of metal silk, sleeve pipe (2) is to adopt blunt nosed plastic bushing, the tip portion of real core induction disconnection formula indwelling trocar is shown in (3) in the accompanying drawing 1, lever is to adopt special-shaped metal shown in (4) in the accompanying drawing 1, is being embedded under the prerequisite of not overslaugh lever function on the handle (5).Puncture in the two ends that nook closing member (1) and sleeve pipe (2) are placed on lever (4).
When puncture, because nook closing member penetrates three left radial pattern otch of skin and tissue back, relaxed the resistance that has produced when thereby surrounding tissue and skin have reduced displacement between tissue and union body to telescopic ring bag power, the resistance that produces when like this sleeve pipe being entered is all regarded as and is produced between sleeve opening and surrounding tissue.
The nook closing member that at first enters skin produces resistance, and nook closing member is from the beginning of the position, and when entering, sleeve pipe enters skin sleeve pipe resistance and strengthens again, and at this moment nook closing member does not also have transdermal, and nook closing member also exists resistance, and lever will slowly move under the sleeve pipe resistance promotes.The nook closing member arm of force on one side is along with prolongation, until two new dynamic balances.
The variation of lever is regarded as when entering skin: telescopic resistance is greater than the resistance of nook closing member, and the nook closing member resistance also exists.Sleeve pipe power is greater than nook closing member power, and lever moves towards the direction of nook closing member arm of force prolongation on one side, until two new dynamic balances.
When needle point contact vessel outer wall, because the blood vessel surrounding tissue has limited blood vessel and has moved, so needle point is easy to fix a point on blood vessel wall, entering of needle point enlarged the puncture orifice on the blood vessel wall, blood vessel is lifted, needle point and blood vessel near end angle are reduced,, make needle point be difficult on blood vessel wall, fix a point to be unlikely to penetrate again blood vessel like this near balance.
When blood vessel wall was fixed a point, the nook closing member resistance increased, and makes lever get back to initial position.Behind the needle point intravasation, the resistance of puncture orifice has all been left sleeve pipe for; Behind the needle point intravasation, the puncture orifice that stays can only be passed through nook closing member, and sleeve pipe will enter also must the expanding puncture orifice.This process produces resistance, has lost resistance after adding the nook closing member intravasation, and sleeve pipe power is on one side increased, and the nook closing member arm of force on one side increases, and lever has lost keeps equilibrated ability, causes the disconnection of lever and nook closing member.Also just equal to have lost the ability that punctures again.
This process of pin intravasation is regarded as: telescopic resistance is less than the resistance of nook closing member, and the resistance of nook closing member suddenly disappears, and during less than the nook closing member resistance, needle body keeps original state at the sleeve pipe resistance, and suddenly disappear at the nook closing member resistance, at this moment the sleeve pipe resistance is greater than the nook closing member resistance.Sleeve pipe the power here increases, and the nook closing member arm of force on one side increases, and lever has lost the equilibrated ability of keeping, and nook closing member power does not on one side increase the continuous prolongation that stops its arm of force.Nook closing member has lost resistance and lever disconnects, and all thrusts all concentrate on the sleeve pipe.
Nook closing member has not had thrust, between blood vessel and sleeve pipe, stop, when having formed " lead " continuation promotion needle body of sleeve pipe intravasation, sleeve pipe just " moves under water " along the nook closing member intravasation and in blood vessel and has arrived certain position, take out nook closing member, only stay sleeve pipe, at this moment blood can flow out along sleeve pipe, transfusion device outside the connector under liquid, aseptic, closed circuit condition.
This utility model compared with prior art advantage is not to be subjected to factor affecting such as nook closing member thickness and intravascular pressure, can express the puncture purpose directly, accurately.This utility model nook closing member (1), when penetrating skin, the needle point of its triangular pyramid type stays three radial pattern otch on skin, make by the place of wearing and form three flaps, under three ramp effect of the needle point that enters at the same time, this group flap is subsided to the skin depths, be funnel-form.Help blunt nosed plastic bushing (2) like this and enter skin, so need not resemble the prior art the special processing of sleeve pipe.This novel induction disconnection device that adopts is waited by lever (4) and to form, and is to be resistance difference feeling with " falling through " that patient's experience be felt in the prior art, induce with lever, in time disconnect, make nook closing member be difficult to penetrate blood vessel, become " lead " of sleeve pipe intravasation.Compared with prior art, can improve puncture success rate.
Claims (5)
1, a kind of medical apparatus and instruments for clinical treatment, real core induction disconnection formula indwelling trocar.It is characterized in that it is made up of (1) nook closing member, (2) sleeve pipe, (3) lever, (4) handle.
2, according to claim 1, said real core induction disconnection formula indwelling trocar is characterized in that employed nook closing member is real core.
3, according to claim 1, said real core induction disconnection formula indwelling trocar, it is tapered to it is characterized in that its needle point of employed nook closing member is Rhizoma Sparganii.
4, according to claim 1, said real core induction disconnection formula indwelling trocar is characterized in that employed nook closing member is not to be fixed on the handle, but in handle and sleeve pipe, can move forward and backward.
5, according to claim 1, said real core induction disconnection formula indwelling trocar, it is characterized in that employed sleeve pipe, nook closing member, handle are on same axle center, fore-and-aft clearance is not from interfixing, and the front and back position of sleeve pipe and nook closing member is restricted by the lever on the handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92203788 CN2117132U (en) | 1992-03-06 | 1992-03-06 | Core induced indwelling trocar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92203788 CN2117132U (en) | 1992-03-06 | 1992-03-06 | Core induced indwelling trocar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2117132U true CN2117132U (en) | 1992-09-30 |
Family
ID=4950347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92203788 Granted CN2117132U (en) | 1992-03-06 | 1992-03-06 | Core induced indwelling trocar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2117132U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103153362A (en) * | 2010-06-18 | 2013-06-12 | 宋京镇 | Reversible disposable sujichim for blood vessel |
| 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 |
-
1992
- 1992-03-06 CN CN 92203788 patent/CN2117132U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103153362A (en) * | 2010-06-18 | 2013-06-12 | 宋京镇 | Reversible disposable sujichim for blood vessel |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |