CN110075387A - A kind of anti-needle thorn remaining needle of observable withdraw of the needle distance - Google Patents
A kind of anti-needle thorn remaining needle of observable withdraw of the needle distance Download PDFInfo
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- CN110075387A CN110075387A CN201910496132.0A CN201910496132A CN110075387A CN 110075387 A CN110075387 A CN 110075387A CN 201910496132 A CN201910496132 A CN 201910496132A CN 110075387 A CN110075387 A CN 110075387A
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- needle
- inner sleeve
- outer tube
- withdraw
- puncture needle
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- 238000001467 acupuncture Methods 0.000 claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 16
- 239000008280 blood Substances 0.000 description 12
- 210000004369 blood Anatomy 0.000 description 12
- 230000000717 retained effect Effects 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 206010011985 Decubitus ulcer Diseases 0.000 description 3
- 208000004210 Pressure Ulcer Diseases 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000010412 perfusion Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 208000035049 Blood-Borne Infections Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000009466 transformation Effects 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/46—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for controlling depth of insertion
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1588—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body having means for monitoring, controlling or visual inspection, e.g. for patency check, avoiding extravasation
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A kind of anti-needle thorn remaining needle of observable withdraw of the needle distance, including flexible tube base, are equipped with anti-acupuncture group part in the bottom end of flexible tube base, the instruction structure for judging withdraw of the needle distance are equipped on anti-acupuncture group part；Anti- acupuncture group part includes inner sleeve, being equipped in inner sleeve housing can be along the middle sleeve that inner sleeve pipe outer wall moves, being arranged with outside middle sleeve can be along the outer tube that middle sleeve outer wall moves, the connection of the bottom end of inner sleeve and flexible tube base, puncture needle is equipped in outer tube, the bottom of puncture needle is fixedly connected with outer tube.Anti- acupuncture group part is for preventing when puncture needle withdraws from flexible tube base in the present invention, and puncture needle stabs medical staff, and instruction structure is for judging withdraw of the needle distance；Inner sleeve, middle sleeve and the outer tube of anti-acupuncture group part avoid puncture needle from exposing, avoid stabbing medical staff for wrapping puncture needle during the withdraw of the needle；Middle sleeve is equipped between inner sleeve and outer tube, to reduce the overall length of anti-acupuncture group part.
Description
Technical field
The present invention relates to the technical fields of infusion apparatus, and in particular to a kind of anti-needle thorn indwelling of observable withdraw of the needle distance
Needle.
Background technique
In recent years, venous detaining needle application range constantly expands, and is widely used in clinical Zhong Ge department.Vein stays
Setting needle, there are some problems in clinical use:
(1) when clinical staff carries out retained needle puncture operation to patient, in order to better disposable puncture and indwelling
Success, has such a working specification, successively are as follows: pricks tourniquet, removal shield needle cap, left-right looseness puncture needle, pinpoint inclined plane
Upward with 15 to 30 degree straight thrust veins, see after blood back reduce angle to 5 to 10 degree, continue 2 millimeters of inserting needle, recession puncture needle 2 to 3
Millimeter holds needle stand conduit and puncture needle is all sent into blood vessel together, tourniquet is unclamped and opens governor, removes puncture needle completely
Out, fixed remaining needle.Being operated in the remaining needle that existing each medical apparatus corporation, Ltd provides by medical staff substantially can be according to facing
Bed working specification is completed, but has a crucial step " 2 to 3 millimeters of puncture needle of recession " among these, the step for be in order to will
Needle point is retracted into conduit and cannot be excessive, be conducive to below all be sent into conduit and puncture needle it is intravascular without damaging blood vessel,
Since existing remaining needle technology is not for the instruction design of medical staff's observation, so clinically medical staff is executing
The step for when be all to be carried out feeling judgement according to personal experience, exist very big maloperation may, not for working experience
Medical staff abundant is especially apparent, and when recession puncture needle is very few, needle point is not fallen back in conduit, send conduit to intravascular subsequent
It is easy to stab with needle point when puncture needle and pierces through vascularization bulge；When recession puncture needle is excessive, needle point falls back on mistake in conduit
When deep, it is subsequent to it is intravascular send conduit and puncture needle when conduit supportive it is inadequate, the easy torsional deformation of conduit influenced
Medical fluid.These problems are all the main reason for causing retained needle puncture to fail.
(2) clinical retained needle puncture is successfully dropped back puncture needle, when puncture needle withdraws from being easy in a flash for retaining needle flexible tube base
The risk that needle pricks medical staff occurs, easily leads to blood borne disease.
Summary of the invention
It is an object of the invention to: the anti-needle for providing a kind of observable withdraw of the needle distance pierces remaining needle, punctures in medical staff
In the process execute the withdraw of the needle step when can see Warning Mark, effectively judge withdraw of the needle distance, and can effectively prevent remaining needle indwelling at
After function, medical staff is stabbed when extracting puncture needle from flexible tube base.
The technical scheme adopted by the invention is as follows:
A kind of anti-needle thorn remaining needle of observable withdraw of the needle distance, including flexible tube base, are equipped with anti-acupuncture group part in the bottom end of flexible tube base,
The instruction structure for judging withdraw of the needle distance is equipped on anti-acupuncture group part.
Anti- acupuncture group part includes inner sleeve, and being arranged on inner sleeve can be along the outer tube that inner sleeve moves, inner sleeve
It is connect with the bottom end of flexible tube base, puncture needle is equipped in outer tube, puncture needle sequentially passes through inner sleeve and flexible tube base, puncture needle
Bottom is fixedly connected with outer tube.
Several bayonets are set on inner sleeve, and bayonet is equipped with and inner sleeve along the circumferentially distributed of inner sleeve on outer tube
The instruction boss that pipe upper latch notch matches, instruction boss are arranged in bayonet, and when completing recession puncture needle, instruction boss is exited
Inner sleeve bayonet.
Middle sleeve is equipped between inner sleeve and outer tube, inner sleeve is connected with outer tube by middle sleeve, outer tube energy
Enough to move along middle sleeve, middle sleeve can be moved along inner sleeve, and puncture needle runs through middle sleeve.
It is equipped with middle positive stop lug boss in middle sleeve bottom end, middle snap ring is equipped on middle sleeve top, is equipped on the top of outer tube
The outer snap ring matched with middle positive stop lug boss is equipped with the interior positive stop lug boss matched with middle snap ring in interior casing shoe, covers in the middle
When pipe moves to the bottom end of inner sleeve, middle snap ring is held out against in the end face of interior positive stop lug boss, when outer tube moves to the bottom of middle sleeve
When end, outer snap ring is held out against in the end face of middle positive stop lug boss.
At least one baffle, baffle and inner sleeve clearance fit are equipped in inner sleeve, puncture needle is through baffle and and baffle
Clearance fit；The block mobile for the inside casing shoe of anti-stop tab is equipped in inner sleeve.
Inner sleeve is coated at or is embedded in the bottom end of flexible tube base, be successively arranged on flexible tube base annular groove and several first
Lug boss, the first lug boss are evenly spaced on along the circumferential direction of flexible tube base, are equipped in the end of inner sleeve and are matched with annular groove
The second lug boss.
Transparent end cap is fixedly connected in the bottom end of outer tube, puncture needle is through outer tube and extends in end cap, wears
Pricker and end cap clearance fit, there are interval, the open bottom end of puncture needle, at the bottom of end cap in the bottom end of puncture needle and the bottom end of end cap
End is equipped with opening, is fixed with the ventilated membrane made of gas-permeable, liquid-impermeable material in opening.
Anti-overflow plug is equipped in flexible tube base, anti-overflow plug includes soft rubber stopper and fixing seat, soft rubber stopper top and soft rubber stopper lower part
It is cylindrical body, the diameter on soft rubber stopper top is greater than the diameter of soft rubber stopper lower part, is equipped in soft rubber stopper lower part and wears with remaining needle
The pin hole that pricker matches is equipped with mounting hole in fixing seat, and soft rubber stopper lower part is mounted in the mounting hole of fixing seat；Mounting hole
For stepped hole, mounting hole includes the first hole and the second hole, and the second hole is close to the bottom end of flexible tube base, soft rubber stopper lower part and the second hole mistake
It is full of cooperation；Soft rubber stopper top and flexible tube base are interference fitted, and fixing seat and flexible tube base clearance fit are equipped on the outer wall of fixing seat
Annular convex platform is equipped with the first annular lug boss for blocking annular convex platform, first annular lug boss and annular in flexible tube base
The end face tightening of boss cooperates.
It is equipped with symmetrical operation handle on outer tube, several raised ribs are equipped on the operating surface of operation handle；Hand
Handle is inverted u-shaped, and the bottom end of operation handle is fixedly connected with outer tube.
For the anti-acupuncture group part of the present invention for preventing when puncture needle withdraws from flexible tube base, puncture needle stabs medical staff, instruction
Structure is for judging withdraw of the needle distance；Inner sleeve, middle sleeve and the outer tube of anti-acupuncture group part during the withdraw of the needle for that will wear
Pricker wraps, and puncture needle is avoided to expose, and avoids stabbing medical staff；Middle set is equipped between inner sleeve and outer tube
Pipe, to reduce the overall length of anti-acupuncture group part；In the middle when sleeve movement to the bottom end of inner sleeve, middle snap ring is held out against to be limited inside
The end face of position boss, when outer tube moves to the bottom end of middle sleeve, outer snap ring is held out against in the end face of middle positive stop lug boss, plays limit
Position effect；Boss and bayonet cooperate, when clinical staff carries out retained needle puncture execution withdraw of the needle operating procedure, that is, observable
This position completes this step when seeing that boss exits inner sleeve bayonet；Baffle prevents puncture needle from returning for blocking puncture needle
Wear, i.e., during the puncture needle withdraw of the needle, then to the direction of flexible tube base puncture；Annular groove and several are successively arranged on flexible tube base
First lug boss, annular groove and the first lug boss make inner sleeve under certain force effect, just may be used for limiting to inner sleeve
To be detached from flexible tube base；The big lower part in soft rubber stopper top of anti-overflow plug is small, and soft rubber stopper top and flexible tube base are interference fitted, and anti-overflow plug is being protected
In the case where demonstrate,proving the resistance for experiencing minimum when medical staff's withdraw of the needle, moreover it is possible to ensure the side opening on puncture needle during the withdraw of the needle
Blood will not be leaked, the end face tightening cooperation of first annular lug boss and annular convex platform plays position-limiting action.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention (one)；
Fig. 2 is the partial sectional view of Fig. 1；
Fig. 3 is the structural schematic diagram that anti-acupuncture group part is stretched out and separated with flexible tube base in Fig. 2；
Fig. 4 is structural schematic diagram (two) of the invention；
The structural schematic diagram that the anti-acupuncture group part that Fig. 5 is Fig. 4 stretches out；
Fig. 6 is the partial sectional view of Fig. 5；
Fig. 7 is the structural schematic diagram of cushion film；
Fig. 8 is the structural schematic diagram (one) of soft rubber stopper；
Fig. 9 is the structural schematic diagram (two) of soft rubber stopper；
Figure 10 is the structural schematic diagram of fixing seat；
Figure 11 is that the mounting hole of fixing seat is the cross-sectional view of stepped hole；
Figure 12 is the structural schematic diagram that the one third of soft rubber stopper lower part is interference fitted to 1/5th with fixing seat；
Figure 13 is partial enlargement diagram in Figure 12；
Figure 14 is the structural schematic diagram of soft rubber stopper lower part and fixing seat transition fit；
Figure 15 is the partial enlargement diagram of Figure 14；
Figure 16 is the structural schematic diagram of soft rubber stopper lower part and fixing seat interference fit；
Figure 17 is the partial enlargement diagram of Figure 16；
Figure 18 is the second annular relief of soft rubber stopper lower part and the structural schematic diagram of fixing seat interference fit；
Figure 19 is the partial enlargement diagram of Figure 18.
Specific embodiment
As shown in figures 1-19, a kind of anti-needle of observable withdraw of the needle distance pierces remaining needle, including flexible tube base 3, in flexible tube base 3
Bottom end is equipped with anti-acupuncture group part, and for anti-acupuncture group part for preventing when puncture needle 1 withdraws from flexible tube base 3, puncture needle 1 stabs medical care people
Member is equipped with the instruction structure for judging withdraw of the needle distance on anti-acupuncture group part, and instruction structure is for judging withdraw of the needle distance.
Indwelling tube 2 is fixedly arranged at the front end in flexible tube base 3, and puncture needle 1 is through indwelling tube 2 and exposed outside indwelling tube 2, soft
The side of tube socket 3 is connected to perfusion tube 11, and flow-stopping clip 12 is equipped on perfusion tube 11, is connected with threeway in the end of perfusion tube 11
13, equipped with no mushroom cap on a connector of threeway 13, this is the prior art, and details are not described herein.
Anti- acupuncture group part includes inner sleeve 6, and being arranged on inner sleeve 6 can be along the outer tube 8 that inner sleeve 6 moves, outside
Casing 8 is set in outside inner sleeve 6, and outer tube 8 can be moved along 6 outer wall of inner sleeve or outer tube 8 is set in inner sleeve 6,
Outer tube 8 can be moved along 6 inner wall of inner sleeve, and inner sleeve 6 is connect with the bottom end of flexible tube base 3, and puncture needle is equipped in outer tube 8
1, puncture needle 1 sequentially passes through inner sleeve 6 and flexible tube base 3, and the bottom of puncture needle 1 is fixedly connected with outer tube 8.
It is equipped with notch in the side at the top of puncture needle 1, which is used for blood back, and the bottom of puncture needle 1 is closed, and works as puncture
When the bottom of needle 1 extends to outer tube 8, closing fixation is carried out using mode for dispensing glue；When the bottom of puncture needle 1 is not pierced by housing
When the bottom of pipe 8, it is closed by the bottom of outer tube 8, this is the prior art, and details are not described herein.
Usual situation is set in outside inner sleeve 6 using outer tube 8, and outer tube 8 can be moved along 6 outer wall of inner sleeve, be convenient for
The middle part for holding outer tube 8 is operated, and is moved easily outer tube 8, while convenient for the motion conditions of observation outer tube 8.
Several bayonets are set on inner sleeve 6, bayonet is circumferentially distributed along inner sleeve 6, on outer tube 8 be equipped with it is interior
The instruction boss 7 that 6 upper latch notch of casing matches, instruction boss is 2 millimeters -3 millimeters long, and instruction boss 7 is arranged in bayonet, when complete
When at recession puncture needle 1, instruction boss 7 exits 6 bayonet of inner sleeve, carries out retained needle puncture in clinical staff and executes the withdraw of the needle
When operating procedure, that is, this position of observable, this step is completed, when seeing that boss exits 6 bayonet of inner sleeve convenient for observation.
When outer tube 8 be set in inner sleeve 6 it is outer when, bayonet is arranged in the top of inner sleeve 6, and the setting of instruction boss 7 is outside
The top of casing 8, when outer tube 8 is set in inner sleeve 6, the bottom end of inner sleeve 6 is arranged in bayonet, and instruction boss 7 is arranged
In the bottom end of outer tube 8.
Middle sleeve 18, inner sleeve 6 and outer tube 8 is equipped between inner sleeve 6 and outer tube 8 to connect by middle sleeve 18,
Outer tube 8 can be moved along middle sleeve 18, and middle sleeve 18 can be moved along inner sleeve 6, and puncture needle 1 runs through middle sleeve 18, inside
Middle sleeve 18 is equipped between casing 6 and outer tube 8, to reduce the overall length of anti-acupuncture group part.
When outer tube 8 be set in inner sleeve 6 it is outer when, inner sleeve 6 and outer tube 8 are connected by middle sleeve 18,8 energy of outer tube
Enough outer walls along middle sleeve 18 move, and middle sleeve 18 can be moved along the outer wall of inner sleeve 6, and puncture needle 1 runs through middle sleeve 18；When
When outer tube 8 is set in inner sleeve 6, inner sleeve 6 and outer tube 8 are connected by middle sleeve 18, and outer tube 8 can be along middle sleeve
18 inner wall is mobile, and middle sleeve 18 can be moved along the inner wall of inner sleeve 6, and puncture needle 1 runs through middle sleeve 18.
It is socket between inner sleeve 6, middle sleeve 18 and outer tube 8, only simple change socket form belongs to of the invention
Protection scope.
It is equipped with middle positive stop lug boss 18b in 18 bottom end of middle sleeve, middle snap ring 18a is equipped on 18 top of middle sleeve, in outer tube 8
Top be equipped with the outer snap ring 8a that matches with middle positive stop lug boss 18b, be equipped in 6 bottom end of inner sleeve and matched with middle snap ring 18a
Interior positive stop lug boss 6b, when middle sleeve 18 moves to the bottom end of inner sleeve 6, middle snap ring 18a is held out against interior positive stop lug boss 6b's
End face, when outer tube 8 moves to the bottom end of middle sleeve 18, outer snap ring 8a is held out against in the end face of middle positive stop lug boss 18b.
When outer tube 8 be set in inner sleeve 6 it is outer when, middle positive stop lug boss 18b is arranged on the outer wall of middle sleeve 18, middle snap ring
18a is arranged on the inner wall of middle sleeve 18, and interior positive stop lug boss 6b is arranged on the outer wall of inner sleeve 6, and outer snap ring 8a is arranged outside
On the inner wall of casing 8；When outer tube 8 is set in inner sleeve 6, middle positive stop lug boss 18b is arranged on the inner wall of middle sleeve 18,
Middle snap ring 18a is arranged on the outer wall of middle sleeve 18, and interior positive stop lug boss 6b is arranged on the inner wall of inner sleeve 6, and outer snap ring 8a is set
It sets on the outer wall of outer tube 8.
Provide for simple replacement of middle positive stop lug boss 18b, middle snap ring 18a, interior positive stop lug boss 6b and the position outer snap ring 8a belongs to this
The protection scope of invention.
Inner sleeve 6, middle sleeve 18 and the outer tube 8 of anti-acupuncture group part are for wrapping up puncture needle 1 during the withdraw of the needle
Firmly, it avoids puncture needle 1 from exposing, avoids stabbing medical staff, middle sleeve 18 is equipped between inner sleeve 6 and outer tube 8, from
And reduce the overall length of anti-acupuncture group part.
At least one baffle 16, baffle 16 and 6 clearance fit of inner sleeve are equipped in inner sleeve 6, puncture needle 1 runs through baffle
16 and with 16 clearance fit of baffle, the baffle 16 of the preferred metal material of baffle 16, can also use other materials baffle 16, gear
Piece 16 can be the other shapes such as round, rectangular, when the quantity of baffle 16 is 1, when puncture needle 1 is extracted out from baffle 16
Afterwards, baffle 16 falls and contacts with the bottom of inner sleeve 6, and puncture needle 1 and the hole of baffle 16 are misaligned, so that back stitching is avoided, when
When the quantity of baffle 16 is 2 or is multiple, the size of each baffle 16 is different, after puncture needle 1 is extracted out from baffle 16, gear
Piece 16 falls and contacts with the bottom of inner sleeve 6, and for corresponding pin hole not in sustained height, the corresponding pin hole of each baffle 16 is not right
Together, a baffle 16 shelters from the pin hole of adjacent baffle 16, thus avoid back stitching, i.e., during 1 withdraw of the needle of puncture needle, then to
The direction of flexible tube base 3 punctures；The block 17 mobile to 6 bottom end of inner sleeve for anti-stop tab 16, block are equipped in inner sleeve 6
17 with inner sleeve 6 be clamped or it is affixed.
Inner sleeve 6 is coated at or is embedded in the bottom end of flexible tube base 3, and annular groove 3b and several is successively arranged on flexible tube base 3
A first lug boss 3c, the first lug boss 3c are evenly spaced on along the circumferential direction of flexible tube base 3, the end of inner sleeve 6 be equipped with
The second lug boss 6a that annular groove 3b is matched, annular groove 3b and the first lug boss 3c make interior for limiting to inner sleeve 6
Casing 6 can just be detached from flexible tube base 3 under certain force effect.
It is equipped with symmetrical operation handle 9 on outer tube 8, several raised ribs are equipped on the operating surface of operation handle 9
10, raised rib 10 prevents from skidding for increasing frictional force.
Operation handle 9 is inverted u-shaped, and the bottom end of operation handle 9 is fixedly connected with outer tube 8, operation handle 9 and outer tube 8
It is integrally formed.
It can also be arranged in the side of outer tube 8 using conventional operation handle 9.
Transparent end cap 19 is fixedly connected in the bottom end of outer tube 8, puncture needle 1 is through outer tube 8 and extends to end cap
In 19, there are interval, the bottom end of puncture needle 1 in puncture needle 1 and 19 clearance fit of end cap, the bottom end of puncture needle 1 and the bottom end of end cap 19
It opens wide, is equipped with opening in the bottom end of end cap 19, is fixed with the ventilated membrane 20 made of gas-permeable, liquid-impermeable material in opening, breathes freely
Film 20 can be made of PTFE film, and the blood back mode of the remaining needle of this set form is the bottom end blood back in puncture needle 1,
The side on 1 top of puncture needle is not open, and this form is suitble to and the lesser puncture needle 1 of diameter, the bend resistance of enhancing puncture needle 1
Ability.
When being not provided with transparent end cap 19 in the bottom end of outer tube 8, remaining needle uses to return at the top of puncture needle 1
Blood is equipped with opening in the side on 1 top of puncture needle, is used for blood back.
As shown in Figure 11, Figure 12 and Figure 13, anti-overflow plug, including soft rubber stopper 14 and fixing seat 15 are equipped in flexible tube base 3, it is soft
Rubber plug top 14a and soft rubber stopper lower part 14b is cylindrical body, and the diameter of soft rubber stopper top 14a is straight greater than soft rubber stopper lower part 14b
Diameter, soft rubber stopper 14 is whole in T shape, and the pin hole 14d matched with the puncture needle 1 of remaining needle is equipped in soft rubber stopper lower part 14b,
Mounting hole 15b is equipped in fixing seat 15, soft rubber stopper lower part 14b is mounted in the mounting hole 15b of fixing seat 15, and mounting hole 14d is
Stepped hole, mounting hole 14d include the first hole 150 and the second hole 152, and the second hole 152 is under the bottom end of flexible tube base 3, soft rubber stopper
Portion 14b is arranged in mounting hole 14d and is interference fitted with the second hole 152, remaining position of soft rubber stopper lower part 14b and mounting hole 14d
It fits closely, soft rubber stopper top 14a and flexible tube base 3 are interference fitted, fixing seat 15 and 3 clearance fit of flexible tube base, in fixing seat 15
Outer wall be equipped with annular convex platform 15a, first annular lug boss 3a for blocking annular convex platform 15a is equipped in flexible tube base 3,
The end face tightening of first annular lug boss 3a and annular convex platform 15a cooperates, and fills in capable limit to anti-overflow；The puncture needle 1 of remaining needle
Through anti-overflow plug, the pin hole 14d of puncture needle 1 and soft rubber stopper 14 cooperates, and the inner wall of pin hole 14d wraps puncture needle 1, avoids blood
Liquid stream goes out；In the case that anti-overflow plug experiences minimum resistance when guaranteeing medical staff's withdraw of the needle, moreover it is possible to ensure the side on puncture needle 1
Opening will not leak blood during the withdraw of the needle.
First annular lug boss 3a is tapered, and the big low side in top of first annular lug boss 3a is small, convenient for assembly.
Soft rubber stopper top 14a refers to the biggish part of outer diameter, and close to the needle point of puncture needle 1, soft rubber stopper lower part 14b refers to outer
The lesser part of diameter, close to the backshank of puncture needle 1.
Tapered transitional pore 151 is equipped between the first hole 150 and the second hole 152, transitional pore 151 is close to the first hole
150 one end is big, and soft rubber stopper 14 and transitional pore 151 are interference fitted, and transitional pore 151 plays a transition role, and is easily installed soft rubber stopper 14,
The length that the length of soft rubber stopper lower part 14b is denoted as f, soft rubber stopper lower part 14b and mounting hole 15b interference fit is denoted as g, the range of g
For 0.2f -0.35f, fixing seat 15 is larger to the extruding force of this interference fit, increases soft rubber stopper 14 to the package of puncture needle 1
Power guarantees that soft rubber stopper 14 to the package power of puncture needle 1, avoids blood from flowing out.
As shown in Figure 14 and Figure 15, mounting hole 15b is cylindrical hole, soft rubber stopper lower part 14b and 15 transition fit of fixing seat.
As shown in Figure 16 and Figure 17, mounting hole 15b is cylindrical hole, and soft rubber stopper lower part 14b and fixing seat 15 are interference fitted.
As shown in Fig. 9, Figure 18 and Figure 19, mounting hole 15b is cylindrical hole, is equipped with the second convex annular in soft rubber stopper lower part 14b
Playing portion 14c, the second annular relief 14c and mounting hole 15b interference fit, increase soft rubber stopper 14 is to the package power of puncture needle 1, and the
For second ring lug boss 14c close to the bottom end of soft rubber stopper 14, the length of soft rubber stopper lower part 14b is denoted as f, the second annular relief 14c
Length be denoted as h, the range of h is 0.2f-0.35f.
The bottom of second annular relief 14c is concordant with the bottom of soft rubber stopper 14, at the both ends of the second annular relief 14c
Rounded corner is easily installed.
Pin hole 14d extends to soft rubber stopper top 14a, and the length of soft rubber stopper top 14a is denoted as i, and pin hole 14d is on soft rubber stopper
The length of portion 14a is denoted as j, and the range of j is 0.2i -0.35i, and pin hole 14d wall is fitted closely with puncture needle 1, avoids blood stream
Out, but the anti-overflow plug of opposite reduction operates the package power of puncture needle 1 convenient for medical staff.
For above-mentioned anti-overflow plug when the needle point for guaranteeing puncture needle 1 is retracted into anti-overflow plug, the side opening on puncture needle 1 is also in anti-overflow
In the case where in plug, anti-overflow plug is reduced to the package power of puncture needle 1, is operated convenient for medical staff, when in use, anti-overflow plug is pacified
In fixing seat 15, then anti-overflow plug is mounted in the flexible tube base 3 of remaining needle, make the annular convex platform 15a of fixing seat 15 with
First annular lug boss 3a in flexible tube base 3 is fitted close, and completes assembly.
The cushion film 4 for pressure sore prevention is equipped on flexible tube base 3, cushion film 4 is long in patient body-surface for reducing remaining needle
The time fixed probability for forming pressure sore, cushion film 4 is made of softwood matter, such as silica gel, cushion film 4 and flexible tube base 3 can integrally at
Type such as can also be bonded, be clamped at the fixed forms.
Several through-holes 5 are equipped on cushion film 4, through-hole 5 is equipped with several for breathing freely, in the bottom of cushion film 4
Every the groove 4a of setting.
The position that fixation is contacted with body surface of flexible tube base 3 is arranged in cushion film 4, and the width of cushion film 4 is greater than hose
The diameter of seat 3 increases contact area, reduces pressure, avoids being partially formed pressure sore, center line pair of the cushion film 4 about flexible tube base 3
Claim setting, i.e., the center line of cushion film 4 is overlapped with the center line of flexible tube base 3.
When in use, remaining needle is pierced by the anti-needle for operating with the observable withdraw of the needle distance of specification, that is, pricks tourniquet, goes
Angle is reduced after thrusting straightly veins except shield needle cap, left-right looseness puncture needle 1, pinpoint inclined plane upward with 15 to 30 degree, see blood back to arrive to 5
10 degree, 2 millimeters of inserting needle of continuation, 12 millimeters to 3 millimeters of puncture needle of recession are moved back when dropping back needle by observation instruction boss 7
It is open out, indicates that puncture needle 1 retreats in place, hold needle stand and conduit and puncture needle 1 are all sent into blood vessels together, tourniquet is unclamped and beats
It opens governor, withdraw from puncture needle 1 completely, when extracting puncture needle 1, hold outer tube 8, make outer tube 8 along middle sleeve 18
Wall moves backward, and when wild card tube top is tightly in middle positive stop lug boss 18b, continues to move backward outer tube 8, outer tube 8 drive in cover
Pipe 18 moves backward, and when the middle snap ring 18a of middle sleeve 18 is held out against in interior positive stop lug boss 6b, continues to move backward outer tube 8, outside
Casing 8 drive middle sleeve 18 move backward, middle sleeve 18 drive inner sleeve 6 move backward, inner sleeve 6 under a stretching force with it is soft
Tube socket 3 separates, and puncture needle 1 is wrapped in inner sleeve 6, middle sleeve 18 and outer tube 8, and puncture needle 1 is avoided to stab medical staff,
Make the skin contact of cushion film 4 Yu patient, finally fixes remaining needle.
The front end or top of heretofore described part or front refer to one end of the close puncture needle needle point of part,
The rear end or bottom end of part or bottom refer to one end away from puncture needle needle point of part；" first ", " in the present invention
Two " etc. do not have concrete meaning, are only to facilitate description and understanding.
Above-described embodiment is the description of the invention, is not limitation of the invention, after any pair of simple transformation of the present invention
Scheme all belong to the scope of protection of the present invention.
Claims (10)
1. a kind of anti-needle of observable withdraw of the needle distance pierces remaining needle, including flexible tube base, it is characterised in that: set in the bottom end of flexible tube base
There is anti-acupuncture group part, the instruction structure for judging withdraw of the needle distance is equipped on anti-acupuncture group part.
2. the anti-needle of observable withdraw of the needle distance as described in claim 1 pierces remaining needle, it is characterised in that: anti-acupuncture group part includes
Inner sleeve, being arranged on inner sleeve can be along the outer tube that inner sleeve moves, the bottom end connection of inner sleeve and flexible tube base, outside
Puncture needle is equipped in casing, puncture needle sequentially passes through inner sleeve and flexible tube base, and the bottom of puncture needle is fixedly connected with outer tube.
3. the anti-needle of observable withdraw of the needle distance as claimed in claim 2 pierces remaining needle, it is characterised in that: be arranged on inner sleeve
It is convex to be equipped with the instruction matched with inner sleeve upper latch notch along the circumferentially distributed of inner sleeve on outer tube for several bayonets, bayonet
Platform, instruction boss are arranged in bayonet, and when completing recession puncture needle, instruction boss exits inner sleeve bayonet.
4. the anti-needle of observable withdraw of the needle distance as claimed in claim 2 pierces remaining needle, it is characterised in that: in inner sleeve and housing
Middle sleeve is equipped between pipe, inner sleeve is connected with outer tube by middle sleeve, and outer tube can be moved along middle sleeve, middle sleeve energy
Enough to move along inner sleeve, puncture needle runs through middle sleeve.
5. the anti-needle of observable withdraw of the needle distance as claimed in claim 4 pierces remaining needle, it is characterised in that: set in middle sleeve bottom end
There is middle positive stop lug boss, is equipped with middle snap ring on middle sleeve top, it is outer equipped with what is matched with middle positive stop lug boss on the top of outer tube
Snap ring is equipped with the interior positive stop lug boss matched with middle snap ring in interior casing shoe, in the middle when the bottom end of sleeve movement to inner sleeve,
Middle snap ring is held out against in the end face of interior positive stop lug boss, and when outer tube moves to the bottom end of middle sleeve, outer snap ring is held out against in middle limit
The end face of boss.
6. the anti-needle of observable withdraw of the needle distance as claimed in claim 2 pierces remaining needle, it is characterised in that: be equipped in inner sleeve
At least one baffle, baffle and inner sleeve clearance fit, puncture needle through baffle and with baffle clearance fit；It is set in inner sleeve
There is the block for preventing the inside casing shoe of baffle mobile.
7. the anti-needle of observable withdraw of the needle distance as claimed in claim 2 pierces remaining needle, it is characterised in that: inner sleeve be coated at or
It is embedded in the bottom end of flexible tube base, annular groove and several first lug bosses are successively arranged on flexible tube base, the first lug boss is along soft
The circumferential direction of tube socket is evenly spaced on, and the second lug boss matched with annular groove is equipped in the end of inner sleeve.
8. the anti-needle of the observable withdraw of the needle distance as described in any one of claim 2-7 pierces remaining needle, it is characterised in that:
The bottom end of outer tube is fixedly connected with transparent end cap, and puncture needle is through outer tube and extends in end cap, puncture needle and end cap
There are interval in clearance fit, the bottom end of puncture needle and the bottom end of end cap, and the open bottom end of puncture needle is equipped in the bottom end of end cap and opens
Mouthful, the ventilated membrane made of gas-permeable, liquid-impermeable material is fixed in opening.
9. the anti-needle of observable withdraw of the needle distance as described in claim 1 pierces remaining needle, it is characterised in that: be equipped in flexible tube base
Anti-overflow plug, anti-overflow plug includes soft rubber stopper and fixing seat, and soft rubber stopper top and soft rubber stopper lower part are cylindrical body, soft rubber stopper top
Diameter is greater than the diameter of soft rubber stopper lower part, the pin hole matched with the puncture needle of remaining needle is equipped in soft rubber stopper lower part, in fixation
Mounting hole is equipped in seat, soft rubber stopper lower part is mounted in the mounting hole of fixing seat；Mounting hole is stepped hole, and mounting hole includes first
Hole and the second hole, the second hole are interference fitted close to the bottom end of flexible tube base, soft rubber stopper lower part and the second hole；Soft rubber stopper top and hose
Seat interference fit, fixing seat and flexible tube base clearance fit, annular convex platform is equipped on the outer wall of fixing seat, is equipped in flexible tube base
For blocking the first annular lug boss of annular convex platform, the end face tightening cooperation of first annular lug boss and annular convex platform.
10. the anti-needle of observable withdraw of the needle distance as claimed in claim 2 pierces remaining needle, it is characterised in that: set on outer tube
There is symmetrical operation handle, several raised ribs are equipped on the operating surface of operation handle；Handle is inverted u-shaped, operation handle
Bottom end is fixedly connected with outer tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910496132.0A CN110075387B (en) | 2019-06-10 | 2019-06-10 | Needle-prick-preventing remaining needle capable of observing needle withdrawal distance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910496132.0A CN110075387B (en) | 2019-06-10 | 2019-06-10 | Needle-prick-preventing remaining needle capable of observing needle withdrawal distance |
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| CN110075387A true CN110075387A (en) | 2019-08-02 |
| CN110075387B CN110075387B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910496132.0A Active CN110075387B (en) | 2019-06-10 | 2019-06-10 | Needle-prick-preventing remaining needle capable of observing needle withdrawal distance |
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Cited By (1)
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| CN110075387B (en) * | 2019-06-10 | 2024-06-07 | 河南驼人医疗器械集团有限公司 | Needle-prick-preventing remaining needle capable of observing needle withdrawal distance |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075387B (en) * | 2019-06-10 | 2024-06-07 | 河南驼人医疗器械集团有限公司 | Needle-prick-preventing remaining needle capable of observing needle withdrawal distance |
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| CN101837159A (en) * | 2009-03-19 | 2010-09-22 | 贾宇东 | Rod-pushing needle-pulling pen type safe indwelling needle and use method thereof |
| US20130041318A1 (en) * | 2010-02-02 | 2013-02-14 | Michael Vosseler | Dermal access device |
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| CN110075387B (en) | 2024-06-07 |
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