CN210673928U - Integrated preset guide wire central venipuncture blue hollow needle - Google Patents
Integrated preset guide wire central venipuncture blue hollow needle Download PDFInfo
- Publication number
- CN210673928U CN210673928U CN201920647628.9U CN201920647628U CN210673928U CN 210673928 U CN210673928 U CN 210673928U CN 201920647628 U CN201920647628 U CN 201920647628U CN 210673928 U CN210673928 U CN 210673928U
- Authority
- CN
- China
- Prior art keywords
- guide wire
- push
- pull rod
- blue
- safety valve
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a disjunctor formula is preset and is led wire center venipuncture blue empty needle, including blue empty needle, plastics interlayer, relief valve, core bar and seal wire pusher, blue empty needle includes cylinder and syringe nipple, is equipped with piston and the push-and-pull rod that is provided with the through-hole along the axis in the cylinder, and plastics interlayer is connected with cylinder front end portion inner wall sealing all around, leaves the gap between plastics interlayer front end face and the cylinder front end face, and the peripheral part of plastics interlayer is equipped with the intercommunicating pore; the safety valve is arranged at the center inside the plastic interlayer, and the centers of two end surfaces of the safety valve are provided with holes for guide wires to pass through; the core rod is arranged in a hollow shape along the axis and is arranged in the through holes of the piston and the push-pull rod, and one end of the core rod is fixedly connected to the rear end face of the plastic interlayer; the guide wire pusher is arranged at the second end of the push-pull rod and pushes the guide wire to the end face of the safety valve in advance; the blue hollow needle and the guide wire pusher are connected into a whole, so that the guide wire can be pre-arranged in the blue hollow needle, and the puncture efficiency is improved.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to disjunctor formula is preset seal wire center venipuncture blue empty needle.
Background
The central venipuncture catheter has wide clinical application: comprises volume treatment of various critical patients, pressure monitoring and application of vasoactive drugs, long-term infusion of tumor patients, chemotherapy, parenteral nutrition, temporary dialysis of renal failure, temporary pacing through central veins and the like. Central venipuncture is also a skill that the clinician must master.
Two common types of central venipuncture needles are used at present: a Y-shaped needle and a straight blue-empty needle.
The Y-shaped needle is used, although the distance from the guide wire to the blood vessel is short, the adjustment of the direction of the inclined plane of the puncture needle is not facilitated due to the design of the Y-shaped head (sometimes, when the inclined plane is required to be downward, the angle of the puncture needle and the guide wire are inconvenient to change when the Y-shaped head is downward); and due to the design of the Y-shaped head, a rigid part of the guide wire is bent at a certain angle when the rigid part of the guide wire is placed into the main needle tube from the Y-shaped head, and the guide wire adheres to the wall in the main needle tube due to elastic potential energy, so that the pushing or retracting resistance of the guide wire is increased, the puncture operation is not facilitated, the puncture needle is easy to shake to cause the failure of the guide wire placement, especially for hypovolemic patients or children.
Although the straight blue hollow needle can overcome the defects of the Y-shaped needle, the direction of the inclined plane of the puncture needle can be adjusted at will, and the phenomenon that a guide wire adheres to the wall in the main needle tube can not occur. However, the longer the guidewire is placed in the vessel (20-22cm), the increased likelihood of guidewire placement failure due to needle displacement. Also, the guidewire cannot be pre-positioned near the proximal end (crossing the safety valve would result in blood egress and air ingress). Meanwhile, part of the guide wire pusher cannot be arranged on the blue-hollow needle push-pull rod handle in advance, and the guide wire pusher is connected to the rear end of the blue-hollow needle push-pull rod after the puncture needle is normally withdrawn to blood in clinical operation, so that time is delayed, and the probability of failure in displacing the guide wire by the puncture needle is increased. Moreover, the inner diameter of the push-pull rod of the hollow blue needle is not consistent with that of the metal core rod, and when the guide wire is placed from the rear end of the push-pull rod, the connection position of the push-pull rod and the core rod is blocked possibly to influence the placement operation of the guide wire.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a disjunctor formula is preset seal wire central venous puncture blue empty needle to solve one of the problem that proposes in the above-mentioned background art at least.
The technical scheme adopted for solving the technical problems is as follows: an integrated pre-arranged guide wire central venipuncture blue hollow needle, comprising:
the device comprises a hollow needle, a piston, a push-pull rod and a piston, wherein the hollow needle comprises a needle cylinder and an injector nipple, a piston and the push-pull rod are arranged in the needle cylinder, a first end of the push-pull rod is fixedly connected to the end face of the piston, a second end of the push-pull rod extends out of the needle cylinder, and the piston and the push-pull rod are both provided with through holes along the axis;
the plastic interlayer is fixedly arranged at the front end part of the needle cylinder, the periphery of the plastic interlayer is hermetically connected with the inner wall of the needle cylinder, a gap is reserved between the front end surface of the plastic interlayer and the front end surface of the needle cylinder, and a communication hole for communicating the injector nipple and the needle cylinder is arranged at the peripheral part of the plastic interlayer;
the safety valve is fixedly arranged at the center inside the plastic interlayer, and the centers of two end surfaces of the safety valve are provided with holes for guide wires to pass through;
the core rod is arranged in a hollow shape along the axis, the core rod is arranged in the through holes in the centers of the piston and the push-pull rod, and one end of the core rod is fixedly connected to the rear end face of the plastic interlayer;
the guide wire pusher is arranged at the second end of the push-pull rod and pushes the guide wire to a through hole and a core rod which sequentially penetrate through the push-pull rod, so that the guide wire is preset at the end face of the safety valve;
the central lines of the push-pull rod, the piston, the core rod, the safety valve and the injector nipple are collinear.
As an improvement of the above scheme, the guide wire pusher comprises a rear guide channel and a driving portion, the driving portion comprises a driving groove and a guide wire boosting roller, the driving groove is fixedly connected with the second end of the push-pull rod into a whole, the guide wire boosting roller is rotatably arranged on the driving groove, and the guide wire sequentially passes through the rear guide channel, the upper portion of the guide wire boosting roller and the through hole of the push-pull rod.
As an improvement of the scheme, the periphery of the guide wire boosting roller is provided with stripes distributed along the axial direction.
As an improvement of the scheme, the bottom of the driving groove is provided with an arc-shaped handle, and the handle is provided with at least two limiting grooves.
As an improvement of the scheme, the guide wire is wound through the limiting groove to form a circle of less than 8 cm.
As an improvement of the scheme, the guide wire is provided with scale marks, the scale marks are arranged on the scale marks, and when the guide wire is pre-pushed to the end face close to the safety valve through the guide wire pusher, the scale marks are positioned above the guide wire boosting roller.
As an improvement of the scheme, the safety valve is made of a silica gel material.
Has the advantages that: the utility model discloses link into an organic whole blue empty needle and seal wire pusher for the seal wire can preset in blue empty needle, no longer need the process of single hand by seal wire pusher grafting, the seal wire can preset in being close the relief valve terminal surface, pushes the distance and the time of seal wire when having reduced the puncture greatly, and then has increased the success rate that the seal wire was put into.
Meanwhile, the guide wire is preset, the guide wire is pushed to the joint passing through the push-pull rod and the core rod and prone to jamming in advance, the phenomenon that the guide wire is jammed at the joint in the puncture process can be effectively avoided, and puncture efficiency is improved.
The design of the guide wire boosting roller increases the guide wire placing efficiency, and reduces the force of the thumb when the guide wire is placed and the shaking and displacement of the puncture needle caused by the force.
Additionally, the utility model discloses in, through setting up the relief valve inside the plastics interlayer, and set up the sealed mounting means who sets up tip before the cylinder with the plastics interlayer, fine realization the discharge of cylinder front end air, avoid the air to get into to the blood vessel in puncture process.
Drawings
The invention is further described with reference to the following figures and examples:
fig. 1 is a schematic view of a sectional structure of an integrated pre-set guide wire central venipuncture blue hollow needle according to an embodiment of the present invention;
fig. 2 is a top view of a guidewire pusher.
Detailed Description
Referring to fig. 1 and 2, the embodiment of the utility model provides a disjunctor formula is preset and is led wire central venous puncture blue empty needle specifically includes blue empty needle, plastics interlayer 10, core bar 4, relief valve 3, seal wire pusher etc. wherein:
the hollow blue needle comprises a needle cylinder 1 and an injector nipple 2, a piston 6 and a push-pull rod 5 are arranged in the needle cylinder 1, a first end of the push-pull rod 5 is fixedly connected to the end face of the piston 6, a second end of the push-pull rod 5 extends out of the needle cylinder 1, and through holes are formed in the piston 6 and the push-pull rod 5 along the axis.
The plastic interlayer 10 is fixedly arranged at the front end part of the needle cylinder 1, the periphery of the plastic interlayer 10 is hermetically connected with the inner wall of the needle cylinder 1, a gap is reserved between the front end surface of the plastic interlayer 10 and the front end surface of the needle cylinder 1, and a communication hole 11 for communicating the injector nipple 2 with the needle cylinder 1 is arranged at the peripheral part of the plastic interlayer 10;
and the safety valve 3 is fixedly arranged at the center inside the plastic interlayer 10. The safety valve 3 can be made of silica gel, and the centers of two end surfaces of the safety valve 3 are respectively provided with a hole through which a guide wire 8 can pass; on the one hand, the safety valve 3 can be used to prevent blood from flowing out of the push-pull rod 5 and air from outside the syringe into the blood vessel, and on the other hand, the guide wire 8 can be passed through the aperture in the center of the safety valve 3.
The core rod 4 is arranged in a hollow shape along the axis for the guide wire 8 to pass through. Specifically, the core rod 4 is arranged in a through hole in the center of the piston 6 and the push-pull rod 5, one end of the core rod 4 is fixedly connected to the rear end face of the plastic interlayer 10, and the hollow structure in the core rod 4 is in butt joint communication with the safety valve 3. The piston 6 and the push-pull rod 5 are sleeved on the periphery of the core rod 4, and the piston 6 can reciprocate along the core rod 4 by pulling the push-pull rod 5.
And the guide wire pusher is arranged at the second end of the push-pull rod 5 and pushes the guide wire to a through hole which sequentially penetrates through the push-pull rod 5 and the core rod 4, so that the guide wire is pre-arranged at the end face of the safety valve 3. The guide wire pusher is made in one piece with the second end of the push-pull rod 5.
The central lines of the push-pull rod 5, the piston 6, the core rod 4, the safety valve 3 and the injector nipple 2 are collinear, and the central lines jointly form a channel through which a guide wire 8 can pass. The guide wire 8 pushed out by the guide wire pusher can extend into the through hole of the push-pull rod 5 and further pass through the piston 6 and the core rod 4, so that the guide wire 8 is preset on the end surface close to the safety valve 3.
The utility model discloses link into an organic whole blue empty needle and seal wire pusher for seal wire 8 can preset in blue empty needle, no longer need the process of single hand taking seal wire pusher to peg graft, when seal wire 8 presets in being close 3 terminal surfaces of relief valve, can reduce greatly and push seal wire 8's distance and time, and then increased the success rate that seal wire 8 put into.
Meanwhile, the guide wire 8 is preset, the guide wire 8 is pushed to the joint of the push-pull rod 5 and the core rod 4, which is easy to clamp, in advance, the guide wire 8 can be effectively prevented from being clamped at the joint in the puncture process, and the puncture efficiency is further improved.
In addition, through setting up the safety valve 3 inside plastic interlayer 10, and set up the plastic interlayer 10 seal in the installation of syringe 1 front end, the fine realization syringe 1 front end air's of discharge avoids air to get into to the blood vessel in the puncture process.
Preferably, the guide wire pusher comprises a rear guide channel 72 and a driving part, the driving part comprises a driving groove 73 and a guide wire boosting roller 74, one end of the driving groove 73 is communicated with the rear guide channel 72, the other end of the driving groove 73 is fixedly connected with the second end of the push-pull rod 5 into a whole, the guide wire boosting roller 74 is rotatably arranged on the driving groove 73, and specifically, the guide wire boosting roller 74 can penetrate through a rotating shaft and is arranged at two side parts of the driving groove 73. The guide wire 8 passes through the rear guide channel 72, the upper part of the guide wire boosting roller 74 and the through hole of the push-pull rod 5 in sequence. The doctor can press the guide wire 8 with his finger and push it forward, and the guide wire 8 moves forward by the frictional force of the finger and the guide wire assist roller 74.
The guide wire boosting roller 74 is designed to increase the insertion efficiency of the guide wire 8 and reduce the force of the thumb and the shaking displacement of the puncture needle caused by the thumb force when the guide wire 8 is inserted.
To increase the friction, the outer circumference of the guide wire assist roller 74 is provided with axially distributed striations for more efficient advancement of the guide wire 8.
Meanwhile, an arc-shaped handle 75 is installed at the bottom of the driving groove 73, or the handle 75 and the driving groove 73 are integrally formed. At least two limiting grooves 751 are arranged on the handle 75. The first end of the guide wire sheath 9 wrapping the periphery of the guide wire 8 abuts against the end face of the rear guide channel 72, the second end of the guide wire sheath 9 is sequentially clamped into the plurality of limiting grooves 751 on the handle 75, the guide wire sheath 9 is wound into a round shape or an approximate round shape under the limiting of the limiting grooves 751, the guide wire sheath 9 is fixed through the limiting clamps, and then the diameter of a circle formed by bending the guide wire sheath 9 is not more than 8 cm.
Preferably, the guide wire 8 is provided with scale marks, and the scale marks are arranged on the scale marks, and when the guide wire 8 is pre-pushed to the end face close to the safety valve 3 by the guide wire pusher, the scale marks are just above the guide wire boosting roller 74 to represent that the guide wire 8 is pre-arranged in place. The scale mark can be a line which is protruded or obviously distinguished from the scale mark, and can also be a colored strip or a colored block.
The guide wire pusher and the push-pull rod 5 are arranged into an integrated structure, the guide wire pusher and the push-pull rod 5 can be made of plastics, and the guide wire pusher and the push-pull rod can be integrally formed by injection molding, so that the integral stability is ensured.
A method for realizing puncture by using a conjoined preset guide wire 8 central venipuncture blue hollow needle comprises the following steps:
the guide wire 8 sequentially passes through the rear guide channel 72, the upper part of the guide wire boosting roller 74 and the through hole of the push-pull rod 5, and the first end of the guide wire sheath 9 wrapping the periphery of the guide wire 8 is propped against the end surface of the rear guide channel 72;
the second end of the guide wire sheath 9 is sequentially clamped into a plurality of limiting grooves 751 on the handle 75, the guide wire sheath 9 is wound into a round shape or an approximate round shape under the limiting of the limiting grooves 751, and the guide wire sheath 9 is fixed through a limiting clamp;
the thumb acts on the guide wire 8, indirectly rotates the guide wire boosting roller 74, and pushes the guide wire 8 to sequentially pass through the through hole of the push-pull rod 5 and the hollow structure of the core rod 4 until the scale mark of the guide wire 8 is positioned above the guide wire boosting roller 74, so that the front end of the guide wire 8 is ensured to be close to the end face of the safety valve 3 to stay;
after 2-3ml of sterile normal saline is extracted from the needle cylinder 1, a puncture needle head is connected, and air is removed;
puncturing under dissection or ultrasonic positioning, and pushing the guide wire 8 after blood is pumped back, so that the guide wire 8 passes through the safety valve 3, the injector nipple 2 and the puncture needle head to complete the insertion of the guide wire 8;
the puncture needle head and the blue hollow needle are pulled out, and the central venous catheter is arranged along the guide wire 8.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.
Claims (7)
1. The utility model provides a blue empty needle of disjunctor formula preset seal wire central venipuncture which characterized in that includes:
the device comprises a hollow needle, a piston, a push-pull rod and a piston, wherein the hollow needle comprises a needle cylinder and an injector nipple, a piston and the push-pull rod are arranged in the needle cylinder, a first end of the push-pull rod is fixedly connected to the end face of the piston, a second end of the push-pull rod extends out of the needle cylinder, and the piston and the push-pull rod are both provided with through holes along the axis;
the plastic interlayer is fixedly arranged at the front end part of the needle cylinder, the periphery of the plastic interlayer is hermetically connected with the inner wall of the needle cylinder, a gap is reserved between the front end surface of the plastic interlayer and the front end surface of the needle cylinder, and a communication hole for communicating the injector nipple and the needle cylinder is arranged at the peripheral part of the plastic interlayer;
the safety valve is fixedly arranged at the center inside the plastic interlayer, and the centers of two end surfaces of the safety valve are provided with holes for guide wires to pass through;
the core rod is arranged in a hollow shape along the axis, the core rod is arranged in the through holes in the centers of the piston and the push-pull rod, and one end of the core rod is fixedly connected to the rear end face of the plastic interlayer;
the guide wire pusher is arranged at the second end of the push-pull rod and pushes the guide wire to a through hole and a core rod which sequentially penetrate through the push-pull rod, so that the guide wire is preset at the end face of the safety valve;
the central lines of the push-pull rod, the piston, the core rod, the safety valve and the injector nipple are collinear.
2. The integrated pre-guide wire central venipuncture blue hollow needle according to claim 1, wherein: the seal wire pusher comprises a rear guide channel and a driving part, the driving part comprises a driving groove and a seal wire boosting roller, the driving groove is fixedly connected with the second end of the push-pull rod into a whole, the seal wire boosting roller is rotatably arranged on the driving groove, and the seal wire sequentially passes through the rear guide channel, the upper part of the seal wire boosting roller and the through hole of the push-pull rod.
3. The integrated pre-guide wire central venipuncture blue hollow needle according to claim 2, wherein: the periphery of the guide wire boosting roller is provided with stripes distributed along the axial direction.
4. The integrated pre-guide wire central venipuncture blue hollow needle according to claim 2, wherein: the bottom in drive groove is provided with and is curved handle, be provided with two at least spacing grooves on the handle.
5. The integrated pre-guide wire central venipuncture blue hollow needle according to claim 4, wherein: the guide wire penetrates through the limiting groove and is wound to form a circle of less than 8 cm.
6. The integrated pre-guide wire central venipuncture blue hollow needle according to claim 2, wherein: the guide wire is provided with scale marks, the scale marks are arranged on the scale marks, and when the guide wire is pushed to the end face close to the safety valve in advance through the guide wire pusher, the scale marks are located above the guide wire boosting roller.
7. The integrated pre-guide wire central venipuncture blue hollow needle according to any one of claims 1 to 5, wherein: the safety valve is made of silica gel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920647628.9U CN210673928U (en) | 2019-05-06 | 2019-05-06 | Integrated preset guide wire central venipuncture blue hollow needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920647628.9U CN210673928U (en) | 2019-05-06 | 2019-05-06 | Integrated preset guide wire central venipuncture blue hollow needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210673928U true CN210673928U (en) | 2020-06-05 |
Family
ID=70881065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920647628.9U Expired - Fee Related CN210673928U (en) | 2019-05-06 | 2019-05-06 | Integrated preset guide wire central venipuncture blue hollow needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210673928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152112A (en) * | 2019-05-06 | 2019-08-23 | 颜元清 | A kind of preset seal wire central venous puncture indigo plant empty needle of Contiuum type |
-
2019
- 2019-05-06 CN CN201920647628.9U patent/CN210673928U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152112A (en) * | 2019-05-06 | 2019-08-23 | 颜元清 | A kind of preset seal wire central venous puncture indigo plant empty needle of Contiuum type |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3313299A (en) | Intravascular catheter with coaxial puncturing means | |
| CN213465212U (en) | Needle and catheter insertion device | |
| US20060015076A1 (en) | Puncture device with a flexible catheter tube for connecting to a medical infusion line | |
| EP2168619A2 (en) | Device for interfacing with standard luer lock syringes | |
| EP2535072A3 (en) | Subcutaneous infusion devices | |
| WO2004087247A2 (en) | Iv catheter and needle assembly and method | |
| JP2003520082A (en) | Subcutaneous injection set for use with a reservoir having a septum | |
| EP3157611B1 (en) | Over-the-needle catheter insert | |
| JPH0246865A (en) | Catheter outside of dura mater and production therefor | |
| JP2933652B2 (en) | Needle penetrating catheter device and insertion method thereof | |
| CN210673928U (en) | Integrated preset guide wire central venipuncture blue hollow needle | |
| CN217067424U (en) | Temporary pacemaker floats electrode subassembly | |
| CN210992508U (en) | Intracranial support catheter | |
| CN211214739U (en) | Anti-overflow plug for indwelling needle and indwelling needle using same | |
| CN210750825U (en) | Wolf tooth stick type expansion drug delivery balloon | |
| US8518013B2 (en) | Multi-lumen catheter with increased flow area | |
| CN115068741B (en) | Anti-backflow anti-needling indwelling needle | |
| CN102151354B (en) | Double-cavity nasal gastric tube | |
| CN110368070B (en) | Blood pressure dynamic guide core puncture trocar | |
| CN210144717U (en) | Simple deep vein catheter sleeve | |
| CN203507279U (en) | Single-cavity central venous catheter | |
| CN110152112A (en) | A kind of preset seal wire central venous puncture indigo plant empty needle of Contiuum type | |
| CN216877445U (en) | Anti-wall-sticking venous indwelling needle | |
| JP2019213835A (en) | Deep vein puncture tool | |
| CN209237044U (en) | A kind of split type blood vessel retention transfusion needle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |