CN110251395A - A kind of Medical safety type is from the puncture needle that bounces back - Google Patents
A kind of Medical safety type is from the puncture needle that bounces back Download PDFInfo
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- CN110251395A CN110251395A CN201910678146.4A CN201910678146A CN110251395A CN 110251395 A CN110251395 A CN 110251395A CN 201910678146 A CN201910678146 A CN 201910678146A CN 110251395 A CN110251395 A CN 110251395A
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- needle
- sheath
- magnet
- needle stand
- elastic component
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- 239000000945 filler Substances 0.000 claims description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 2
- 230000001186 cumulative effect Effects 0.000 claims 1
- 230000005389 magnetism Effects 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000001737 promoting effect Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000001739 rebound effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 206010057855 Hypotelorism of orbit Diseases 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
- A61B17/3496—Protecting sleeves or inner probes; Retractable tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150572—Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/15058—Joining techniques used for protective means
- A61B5/150595—Joining techniques used for protective means by snap-lock (i.e. based on axial displacement)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
- A61B5/150641—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves comprising means to impede repositioning of protection sleeve from covering to uncovering position
- A61B5/150656—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves comprising means to impede repositioning of protection sleeve from covering to uncovering position semi-automatically triggered, i.e. in which the triggering of the protective sleeve requires a deliberate action by the user, e.g. manual release of spring-biased extension means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150694—Procedure for removing protection means at the time of piercing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
- A61J1/2006—Piercing means
- A61J1/201—Piercing means having one piercing end
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Hematology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Fluid Mechanics (AREA)
- Pharmacology & Pharmacy (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of Medical safety types from bouncing back puncture needle; it solves existing puncture needle and is equipped with isolated needle cap; needle cap is easy to be lost; needle point unprotect be easy to cause clinic to stab after the completion of puncture; and in recycling; the problem of needing to be collected separately puncture needle, increasing medical instrument recycling burden and cost.The present invention includes sheath, needle stand and needle tubing, the both ends of the sheath offer through-hole, the needle stand is located in the sheath and one end of the needle stand is stretched out outside the sheath, the other end of the needle stand connects the needle tubing, elastic component is provided between the needle stand and the sheath, the elastic component is parallel with the needle tubing to be arranged in the same direction, the elastic component is in its natural state, the needle tubing is located in the sheath, and under compression, the needle tubing stretches out outside the sheath elastic component.The advantages that present invention, which has, prevents clinic from stabbing, and puncture needle recycling is convenient, rapid operation.
Description
Technical field
The present invention relates to the field of medical instrument technology, and in particular to a kind of Medical safety type is from the puncture needle that bounces back.
Background technique
On clinical medicine, common puncture needle is made up a prescription or is punctured, but existing frequently-used puncture needle is mostly to wear
The cutting tip setting needle cap of pricker removes needle cap when needing to puncture, and needle cap is separated with puncture needle, and needle cap is easy to be lost, Er Qie
After the completion of puncture, needle point is also possible to accidentally injure patient or medical worker, and when recycling puncture needle, it is also desirable to individually remove puncture
Needle individually recycles, and makes troubles and may cause risk of being wounded by stabbing to the processing of medical instrument.
Current puncture needle there are aiming at the problem that, it is necessary to improve.
Summary of the invention
The technical problems to be solved by the present invention are: existing puncture needle is equipped with isolated needle cap, needle cap is easy to be lost, punctures
Needle point unprotect be easy to cause clinic to stab after the completion, and in recycling, needs to be collected separately puncture needle, increases medical instrument
Recycling burden and cost.
The present invention provides a kind of Medical safety types to solve the above problems from bouncing back puncture needle.
The present invention is achieved through the following technical solutions:
From bounce back puncture needle, including sheath, needle stand and needle tubing, the both ends of the sheath offer logical for a kind of Medical safety type
Hole, the needle stand is located in the sheath and one end of the needle stand is stretched out outside the sheath, and the other end of the needle stand connects
The needle tubing is provided with elastic component between the needle stand and the sheath, the elastic component is parallel with the needle tubing to be arranged in the same direction
And limit, between needle stand and the sheath, in its natural state, the needle tubing is located in the sheath elastic component, described
Elastic component under compression, outside the extended sheath of needle tubing.
Needle tubing and needle stand are arranged in sheath the present invention, and under without using state, needle tubing, which is located in sheath, to be protected,
Will not prick into human body push needle stand move to carry out so that needle tubing be driven to reach outside sheath in sheath and in a state of use
It punctures, and meeting compression elastic piece during pushing needle stand, elastic component accordingly generates a restoring force, with the continuation of needle stand
It promoting, elastic component is compressed more severe, and the restoring force of generation is bigger, and after the completion of puncture, operator stops to needle stand
Applying thrust, needle stand and needle tubing can rebound automatically under the effect of the restoring force of elastic component, thus realize that puncture terminates to bounce back certainly,
Puncture needle is in the protection of sheath always under not puncture state, is avoided clinic and is stabbed, and in recovery processing, it is not necessarily to
Individually processing needle tubing.
A kind of currently preferred Medical safety type is spring from the puncture needle that bounces back, the elastic component, and the spring is coaxial
One end around the needle tubing and the spring is fixed on the needle stand, and the diameter of the spring is close greater than the sheath to be worn
The clear size of opening of barbed end, when pushing needle stand to move in sheath, the spring is in the limit space of the needle stand and sheath
It is compressed, and needle tubing is across the spring, operator's force is less likely to occur to deviate, easier to operate.
A kind of currently preferred Medical safety type is provided with magnet, the magnetic from the puncture needle that bounces back, the sheath side wall
Iron is provided with magnetic attracting by magnet with the magnet on cutting tip, the needle stand.
When needle stand being pushed to move in sheath, elastic component is gradually compressed in the limit space of needle stand and sheath, is generated
Restoring force be gradually increased, in addition as needle tubing enters puncture body, penetration Resistance can be generated, therefore, with persistently pushing away for needle stand
Into, it needs operator to do bigger function and applies bigger power to overcome the increase due to elastic component restoring force and penetration Resistance, this
It invents the magnet of setting and distance is gradually reduced in needle stand progradation by magnet, magnetic force increases, and it is laborsaving conducive to operator,
Facilitate puncture procedure.
From the puncture needle that bounces back, one end of the sheath contact resilient part is provided with a kind of currently preferred Medical safety type
Elastic step, the elasticity step and the sheath side wall connecting with elastic step are provided with cavity, the sky of the sheath side wall
Magnet is provided in chamber, cavity is divided into cavity one and cavity two, is filled with hard filler in the cavity one by the magnet,
It is filled with elastic filler in the cavity two, is provided on the needle stand magnetic attracting by magnet with the magnet.
When promoting needle stand, the spring can gradually squeeze the elastic step, and the cavity one is squeezed, to make
It obtains internal hard filler to move into the cavity of sheath side wall, extruding is generated to magnet, magnet is moved to by magnet direction, together
When squeeze be located at the magnet other end elastic filler, since magnet is gradually reduced at a distance from by magnet, attract each other
Magnetic force increases, and has one to save people conducive to the propulsion of needle stand to the pulling force for puncturing direction and push used in needle stand needle stand
Power, and when puncture after the completion of, stop to needle stand apply thrust, the needle stand can the restoring force of elastic component effect under rapid bullet
It returns, and spring releases the extruding of elastic step, elastic step rebound, the space of cavity one increases, and magnet is in cavity two
It is moved back under the rebound effect of elastic filler to elastic step direction, and the hard filler in cavity one is pushed to move, final magnetic
Iron and filler return to initial position.
Further, inclined surface is arranged close to the side of the sheath port in the cavity one, and the inclined surface is in cambered surface,
When spring squeezes elastic step, the hard filler can be moved preferably under the action of extruding force along inclined surface, be convenient for
Push magnet movement.
For a kind of currently preferred Medical safety type from the puncture needle that bounces back, the bullet of variable diameter is arranged in the nearly cutting tip of the spring
Circlip, orient diameter of the ring spring from close to cutting tip to far from cutting tip is gradually increased, during promoting needle stand,
It is the end that the minor diameter ring spring of spring end first squeezes the elastic step of sheath first, then is the ring spring pair of gradually variable diameter
Elastic step is gradually squeezed to the sidewall direction of sheath, so that the hard filler being more conducive in the cavity of elastic step is to side wall
Cavity direction is mobile, so that hard filler more swimmingly pushes magnet mobile.
A kind of currently preferred Medical safety type is provided with annular protrusion from the puncture needle that bounces back on the needle stand, described
The side of the annular protrusion is arranged in one end of elastic component, and the other end of the elastic component extends along the needle tubing direction, ring
Shape protrusion plays position-limiting action to elastic component.
A kind of currently preferred Medical safety type is provided on the annular protrusion from the puncture needle that bounces back by magnet, this
Sample can be reduced by the lateral distance of magnet and magnet, be conducive to increase the two suction, save operator and promote needle stand
Power.
Further, the magnet annular is distributed in the side wall of the sheath, it is described by magnet annular spread described
The end of annular protrusion, magnet with the middle part that needle stand is always positioned at the sheath is conducive to by the magnetic force of magnet, reduce or disappear
Except because needle stand tilts the frictional force generated with the sheath, conducive to the smooth lasting propulsion of needle stand.
Further, the spring is iron material matter, and such magnet has magnetic force to spring, and ring spring is around needle tubing and is distributed in
The middle part of sheath, magnet are conducive to the middle part that spring is in sheath always to the magnetic force of spring, reduce its possibility glanced off, benefit
In the smooth and venipuncture of needle tubing.
For a kind of currently preferred Medical safety type from bouncing back puncture needle, described by magnet is iron or magnet two.
For a kind of currently preferred Medical safety type from the puncture needle that bounces back, the hard filler is polytetrafluoroethylene (PTFE) ball.
For a kind of currently preferred Medical safety type from the puncture needle that bounces back, the elastic filler is silica gel particle or poly- ammonia
Ester particle.
For a kind of currently preferred Medical safety type from the puncture needle that bounces back, the material of the elasticity step is rubber or heat
Thermoplastic elastomer.
From the puncture needle that bounces back, the nearly cutting tip of the sheath is set as middle part and opens a kind of currently preferred Medical safety type
The cone in hole, in its natural state, the needle tubing is located in the cone elastic component, and when promoting needle stand, the needle tubing is stretched
Elastic component is compressed simultaneously outside the cone out.
The present invention have it is following the utility model has the advantages that
1, present invention setting and needle tubing elastic component in the same direction between needle stand and sheath, under normal condition, needle tubing is located at shield
In set, under puncture state, needle tubing is stretched out outside sheath and is punctured, after the completion of puncture, under the restoring force effect of elastic component,
Automatic retracted is stabbed to effectively prevent clinic, and convenient for being recycled the puncture needle.
2, magnet is arranged in the sheath side wall close to cutting tip in the present invention, on needle stand setting attract each other by magnet,
During promoting needle stand, magnet is gradually increased with by magnet active force, conducive to the restoring force for overcoming spring and punctures generation
Resistance saves manpower, facilitates operation.
3, magnet of the invention setting in the cavities, the displacement of magnet is realized by the extruding of filler in cavity, so that
Magnet and being reduced by distance between magnet is accelerated, and the speed that magnetic force increases also is accelerated, and overcomes spring during needle stand conducive to promoting
Restoring force and puncture generate resistance, save manpower, facilitate operation.
4, the ring spring of the nearly cutting tip setting variable diameter of spring of the present invention, the ring spring are worn from close to cutting tip to separate
The orient diameter of barbed end is gradually increased, and during promoting needle stand, the minor diameter ring spring of spring end first squeezes sheath
The end of elastic step, then be gradually variable diameter ring spring to elastic step gradually to the sidewall direction of sheath squeeze, thus more
It is mobile to the cavity direction of side wall conducive to the filler in the cavity of elastic step, so that the movement of magnet is more smoothly.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram under 1 normal condition of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram under 1 puncture state of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram under 3 normal condition of the embodiment of the present invention.
Fig. 4 is the structural schematic diagram under 3 puncture state of the embodiment of the present invention.
Label and corresponding parts title in attached drawing:
1- sheath, 2- needle stand, 3- needle tubing, 4- spring, 5- puncture body, 6- elasticity step, 7- cavity one, 8- cavity two, 9-
Magnet, 10- hard filler, 11- elastic filler, 12- annular protrusion, 13- press wedge, 16- inclination by magnet, 14- bulge loop, 15-
Face, 17- cone.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
As depicted in figs. 1 and 2, a kind of Medical safety type is described from bounce back puncture needle, including sheath 1, needle stand 2 and needle tubing 3
The both ends of sheath 1 offer through-hole, and the needle stand 2 is located in the sheath 1 and the sheath 1 is stretched out in one end of the needle stand 2
Outside, the other end of the needle stand 2 connects the needle tubing 3, and elastic component, the bullet are provided between the needle stand 2 and the sheath 1
Property part it is parallel with the needle tubing 3 in the same direction setting, in its natural state, the needle tubing 3 is located in the sheath 1 elastic component,
Under compression, the needle tubing 3 stretches out outside the sheath 1 elastic component.
Needle tubing 3 and needle stand 2 are arranged in sheath 1 present invention, and under without using state, needle tubing 3, which is located in sheath 1, to be carried out
Protection, will not prick into human body push needle stand 2 move in sheath 1 thus band and in the state of to puncturing body 5 and puncturing
Dynamic needle tubing 3 reaches to be punctured outside sheath 1, and meeting compression elastic piece during pushing needle stand 2, elastic component accordingly generate
One restoring force continues to promote with needle stand 2, and elastic component is compressed more severe, and the restoring force of generation is bigger, and is puncturing
After the completion, operator stops applying needle stand 2 thrust, needle stand 2 and the meeting of needle tubing 3 appliance for releasing single under the restoring force effect of elastic component
It returns, to realize that puncture terminates i.e. from bouncing back, puncture needle is in the protection in sheath 1, to avoid always under not puncture state
Clinic is stabbed, and in recovery processing, without individually processing needle tubing 3.
The elastic component is spring 4, and one end of needle tubing 3 and the spring 4 described in 4 coaxial surrounding of spring is fixed on institute
It states on needle stand 2, the diameter of the spring 4 is greater than the sheath 1 close to the clear size of opening of cutting tip, when promotion needle stand 2 is in sheath 1
When middle movement, the spring 4 is compressed in the limit space of the needle stand 2 and sheath 1, and needle tubing 3 is across the spring 4
, operator's force is less likely to occur to deviate, easier to operate.
Annular protrusion 12 is provided on the needle stand 2, the one of the annular protrusion 12 is arranged in one end of the elastic component
The other end of side, the elastic component extends along 3 direction of needle tubing, and annular protrusion 12 plays position-limiting action to elastic component.
Ring-shaped step is arranged close to the one end punctured in the sheath 1, and the ring-shaped step plays position-limiting action to spring 4,
And needle tubing 3 can pass through the through-hole that the ring-shaped step is formed.
On the ring-shaped step setting middle part aperture cone 17, the elastic component in its natural state, the needle tubing 3
In in the cone 17, when promoting needle stand 2, the elastic component is compressed, and the needle tubing 3 stretches out outside the cone 17.
The sheath 1 is provided with the bulge loop 14 of its vertical side wall far from the one end punctured, and the bulge loop 14 is to annular protrusion
12 play position-limiting action, and needle stand 2 is prevented to be detached from the sheath 1.
One end that the needle stand 2 stretches out the sheath 1 is provided with by wedge 15, and the diameter by wedge 15 is greater than described
The through-hole diameter that 1 bulge loop 14 of sheath is formed, plays position-limiting action to the propulsion of needle stand 2 in this way, prevents the excessive propulsion of needle stand 2.
Embodiment 2
The present embodiment the difference from embodiment 1 is that, 1 side wall of sheath is provided with magnet 9, and the magnet 9 is close to wearing
Barbed end is provided on the needle stand 2 magnetic attracting by magnet 13 with the magnet 9.
When pushing needle stand 2 to move in sheath 1, elastic component is gradually pressed in the limit space of needle stand 2 and sheath 1
Contracting, the restoring force of generation are gradually increased, and are in addition punctured body 5 as needle tubing 3 enters, resistance can be generated, therefore, with needle stand 2
It is lasting to promote, it needs operator to do bigger function and applies bigger power to overcome since elastic component restoring force increases and penetration Resistance
Increase, the magnet 9 and distance is gradually reduced in 2 progradation of needle stand by magnet 13 that the present invention is arranged, magnetic force increase, be conducive to
Operator is laborsaving, facilitates puncture procedure.
9 annular spread of magnet in the side wall of the sheath 1, it is described by 13 annular spread of magnet in the convex annular
Play 12 end, magnet 9 with the middle part that needle stand 2 is always positioned at the sheath 1 is conducive to by the magnetic force of magnet 13, reduce or eliminate
The frictional force that the inclination of needle stand 2 is generated with the sheath 1, conducive to the smooth lasting propulsion of needle stand 2.
Described by magnet 13 is magnet 9 two, and the opposite end of the magnet 9 and magnet 9 two is in opposed polarity, so that the two production
Give birth to mutual attractive force rather than repulsive force.
The hard filler 10 is polytetrafluoroethylene (PTFE) ball, and the surface flatness of polytetrafluoroethylene (PTFE) is high, be easy because squeeze and
It is mobile.
The elastic filler 11 is silica gel particle or polyurethane particles.
The material of the elasticity step 6 is thermoplastic elastomer (s), and the thermoelastic material is polyurethane.
Embodiment 3
As shown in Figure 3 and Figure 4, the present embodiment the difference from example 2 is that, one end of the 1 contact resilient part of sheath
Flexible step 6 is set, and the elasticity step 6 and 1 side wall of sheath connecting with elastic step 6 are provided with cavity, the shield
It covers and is provided with magnet 9 in the cavity of 1 side wall, cavity is divided into cavity 1 and cavity 28, the cavity 1 by the magnet 9
In be filled with hard filler 10, elastic filler 11 is filled in the cavity 28, is provided with and the magnet 9 on the needle stand 2
It is magnetic attracting by magnet 13.
When promoting needle stand 2, the spring 4 can gradually squeeze the elastic step 6, and the cavity 1 is squeezed, from
And internal hard filler 10 is moved into the cavity of 1 side wall of sheath, extruding is generated to magnet 9, magnet 9 is to by magnet 13
Direction is mobile, while squeezing the elastic filler 11 for being located at 9 other end of magnet, since magnet 9 gradually subtracts at a distance from by magnet 13
Small, therefore, the magnetic force to attract each other increases, and has one to the active force for puncturing direction, conducive to the propulsion of needle stand 2, section to needle stand 2
It has saved people and has pushed power used in needle stand 2, and after the completion of puncturing, stop applying needle stand 2 thrust, the needle stand 2 can be in elasticity
It rebounds rapidly under the restoring force effect of part, and the extruding of 4 pairs of spring elastic steps 6 releases, elastic step 6 is sprung back, cavity 1
Space increases, and magnet 9 moves back under the rebound effect of the elastic filler 11 in cavity 28 to elastic 6 direction of step, and pushes
Hard filler 10 in cavity 1 moves, and final magnet 9 and filler return to initial position.
In 2 progradation of needle stand, remain magnet 9 at a distance from by magnet 13 in magnetic force increase apart from model
It encloses, prevents the hypotelorism of two magnets in this way and the magnetic force that magnetic force disappears or generates opposite direction occurs.
Inclined surface 16 is arranged close to the side of 1 port of sheath in the cavity 1, and the inclined surface 16 is in cambered surface,
When spring 4 squeezes elastic step 6, the hard filler 10 can be moved preferably under the action of extruding force along inclined surface 16,
Convenient for pushing magnet 9 to move.
4 ring of spring of the nearly cutting tip setting variable diameter of the spring 4,4 ring of spring are worn from close to cutting tip to separate
The orient diameter of barbed end is gradually increased, and is that 4 ring of minor diameter spring of 4 end of spring first squeezes first during promoting needle stand 2
Press sheath 1 elastic step 6 end, then be gradually variable diameter 4 ring of spring to elastic step 6 gradually to the side wall side of sheath 1
To extruding, so that the filler being more conducive in the cavity of elastic step 6 is mobile to the cavity direction of side wall, so that the movement of magnet 9
It is more smoothly.
It is provided on the annular protrusion 12 by magnet 13, can be made in this way by the lateral distance of magnet 13 and magnet 9
Reduce, is conducive to increase the two suction, saves the power that operator promotes needle stand 2.
Embodiment 4
The present embodiment and the difference of embodiment 3 are that the spring 4 is iron material matter, and such magnet 9 has magnetic to spring 4
Power, spring 4 are looped around outside needle tubing 3 and are distributed in the middle part of sheath 1, and magnet 9 is conducive to spring 4 to the magnetic force of spring 4 and is in always
Its possibility glanced off is reduced at the middle part of sheath 1, conducive to the smooth and venipuncture of needle tubing 3.
Embodiment 5
The present embodiment and the difference of embodiment 3 are that cavity three, the sky is arranged in the free end of the annular protrusion 12
Magnet 9 two is set in chamber three, and the free end of the annular protrusion 12 is set as the structure with hole body, is provided with the shield of magnet 9
The side wall of set 1 also offers hole body, can reduce blocking of the barrier layer to magnetic force in this way.
Embodiment 6
The present embodiment and the difference of embodiment 3 are that the annular protrusion 12 is iron material matter, generate conducive to magnet 9 to it
Magnetic force.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
- The puncture needle 1. a kind of Medical safety type bounces back certainly, which is characterized in that described including sheath (1), needle stand (2) and needle tubing (3) The both ends of sheath (1) offer through-hole, and the needle stand (2) is located in the sheath (1) and institute is stretched out in one end of the needle stand (2) State sheath (1) outside, the other end of the needle stand (2) connects the needle tubing (3), sets between the needle stand (2) and the sheath (1) It is equipped with elastic component, the elastic component is parallel with the needle tubing (3) to be arranged in the same direction and limit in the needle stand (2) and the sheath (1) between, in its natural state, the needle tubing (3) is located in the sheath (1) elastic component, and the elastic component is compressing Under state, the extended sheath (1) of needle tubing (3) is outside.
- The puncture needle 2. a kind of Medical safety type according to claim 1 bounces back certainly, which is characterized in that the elastic component is bullet One end of spring (4), needle tubing (3) and the spring (4) described in spring (4) coaxial surrounding is fixed on the needle stand (2), institute The diameter for stating spring (4) is greater than the sheath (1) close to the clear size of opening of cutting tip.
- The puncture needle 3. a kind of Medical safety type according to claim 1 or 2 bounces back certainly, which is characterized in that the sheath (1) Side wall is provided with magnet (9), and the magnet (9) is provided with and the magnet (9) magnetism on cutting tip, the needle stand (2) It is attracting by magnet (13).
- The puncture needle 4. a kind of Medical safety type according to claim 1 or 2 bounces back certainly, which is characterized in that the sheath (1) One end of contact resilient part is arranged flexible step (6), and the elasticity step (6) and the sheath that connect with elastic step (6) (1) side wall is provided with cavity, is provided with magnet (9) in the cavity of sheath (1) side wall, the magnet (9) separates cavity For cavity one (7) and cavity two (8), hard filler (10) are filled in the cavity one (7), filling in the cavity two (8) Flexible filler (11) is provided on the needle stand (2) magnetic attracting by magnet (13) with the magnet (9).
- The puncture needle 5. a kind of Medical safety type according to claim 2 bounces back certainly, which is characterized in that the spring (4) Spring (4) ring of nearly cutting tip setting variable diameter, orient diameter of spring (4) ring from close to cutting tip to far from cutting tip by It is cumulative big.
- 6. according to claim 1, a kind of 2 or 5 described in any item Medical safety types are from the puncture needle that bounces back, which is characterized in that institute It states and is provided on needle stand (2) annular protrusion (12), one end of the elastic component is arranged in the side of the annular protrusion (12), institute The other end for stating elastic component extends along the needle tubing (3) direction.
- The puncture needle 7. a kind of Medical safety type according to claim 6 bounces back certainly, which is characterized in that the annular protrusion (12) it is provided on by magnet (13).
- The puncture needle 8. a kind of Medical safety type according to claim 3 bounces back certainly, which is characterized in that described by magnet (13) For iron or magnet (9) two.
- The puncture needle 9. a kind of Medical safety type according to claim 4 bounces back certainly, which is characterized in that the hard filler It (10) is polytetrafluoroethylene (PTFE) ball, the elastic filler (11) is silica gel particle or polyurethane particles.
- The puncture needle 10. a kind of Medical safety type according to claim 4 bounces back certainly, which is characterized in that the elasticity step (6) material is rubber or thermoplastic elastomer (s).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910678146.4A CN110251395A (en) | 2019-07-23 | 2019-07-23 | A kind of Medical safety type is from the puncture needle that bounces back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910678146.4A CN110251395A (en) | 2019-07-23 | 2019-07-23 | A kind of Medical safety type is from the puncture needle that bounces back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110251395A true CN110251395A (en) | 2019-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910678146.4A Pending CN110251395A (en) | 2019-07-23 | 2019-07-23 | A kind of Medical safety type is from the puncture needle that bounces back |
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| Country | Link |
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| CN (1) | CN110251395A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115969431A (en) * | 2022-12-12 | 2023-04-18 | 哈尔滨理工大学 | Multi-degree-of-freedom biopsy device guided by transrectal ultrasound |
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| JPH07255706A (en) * | 1994-03-22 | 1995-10-09 | Advance Co Ltd | Simple blood taking device |
| CN202554636U (en) * | 2012-05-18 | 2012-11-28 | 河南曙光健士医疗器械集团有限公司 | Punch-proof and blood return prevention indwelling needle |
| WO2015192485A1 (en) * | 2014-06-19 | 2015-12-23 | 杨育和 | Retractable safe syringe with changeable needle |
| CN107041755A (en) * | 2016-12-30 | 2017-08-15 | 河南曙光汇知康生物科技股份有限公司 | A kind of retractable needles device and its blood taking needle, the transfusion needle being made |
| CN210873048U (en) * | 2019-07-23 | 2020-06-30 | 四川普瑞斯生物科技有限公司 | Medical safety self-retraction puncture needle |
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2019
- 2019-07-23 CN CN201910678146.4A patent/CN110251395A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07255706A (en) * | 1994-03-22 | 1995-10-09 | Advance Co Ltd | Simple blood taking device |
| CN202554636U (en) * | 2012-05-18 | 2012-11-28 | 河南曙光健士医疗器械集团有限公司 | Punch-proof and blood return prevention indwelling needle |
| WO2015192485A1 (en) * | 2014-06-19 | 2015-12-23 | 杨育和 | Retractable safe syringe with changeable needle |
| CN107041755A (en) * | 2016-12-30 | 2017-08-15 | 河南曙光汇知康生物科技股份有限公司 | A kind of retractable needles device and its blood taking needle, the transfusion needle being made |
| CN210873048U (en) * | 2019-07-23 | 2020-06-30 | 四川普瑞斯生物科技有限公司 | Medical safety self-retraction puncture needle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115969431A (en) * | 2022-12-12 | 2023-04-18 | 哈尔滨理工大学 | Multi-degree-of-freedom biopsy device guided by transrectal ultrasound |
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