CN109078238A - A kind of puncture needle protection device and trochar - Google Patents
A kind of puncture needle protection device and trochar Download PDFInfo
- Publication number
- CN109078238A CN109078238A CN201710447788.4A CN201710447788A CN109078238A CN 109078238 A CN109078238 A CN 109078238A CN 201710447788 A CN201710447788 A CN 201710447788A CN 109078238 A CN109078238 A CN 109078238A
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- Prior art keywords
- puncture needle
- trochar
- protection device
- needle
- stop block
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- 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
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
-
- 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
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
-
- 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
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biophysics (AREA)
- Vascular Medicine (AREA)
- Pulmonology (AREA)
- Gastroenterology & Hepatology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of puncture needle protection devices comprising: sleeve；Stop block offers the first axis through-hole passed through for puncture needle thereon, is additionally provided with the first inclined-plane on stop block；Sliding block, which is provided with matched second inclined-plane in the first inclined-plane, be also provided with the second axially extending bore passed through for puncture needle on sliding block；Elastic component, to apply axial thrust to sliding block；When stop block is located at the first station, first axis through-hole and the second axially extending bore centering on sliding block, puncture needle thereon passes through the second axially extending bore and first axis through-hole and is pierced by from sleeve；When puncture needle is bounced back to from the position that first axis through-hole is deviate from, stop block is pushed to second station, so that first axis through-hole is misaligned with puncture needle, prevents puncture needle from passing through first axis through-hole and being pierced by from sleeve.In addition, the invention also discloses a kind of trochars with the puncture needle protection device.
Description
Technical field
The present invention relates to a kind of medical instrument more particularly to a kind of devices being used cooperatively with puncture needle.
Background technique
Puncture needle is the medical device being commonly used, and is widely used in haemodialysis, intravenous drip etc. and is treating
In the process.The puncture needle being widely adopted at present is steel needle, and in puncture process, the steel needle of hard is easy to damage blood vessel, from
And cause the complication such as subcutaneous oozing of blood.In addition, when puncture needle is used for dialysis treatment, since dialysis procedure is longer, and entire
In dialysis procedure, patient's arm is stiff, therefore comfort level is greatly affected.
Based on this, a kind of trochar being composed of casing and interior needle is used for puncture and dialysis procedure at present
In.It when using this kind of trochar, needs first to be pierced into interior needle in patient vessel together together with casing, then loses the extraction of interior needle
It abandons.But in use, when extracting interior needle from casing, sharp keen needle point can be exposed, to be easy to cause medical care people
The damage of member and patient.In addition, the blood or body fluid that have on interior needle may also pollute environment and bring infection risk.
Summary of the invention
One of the objects of the present invention is to provide a kind of puncture needle protection devices, which can be to puncture
Needle carries out effective protection, prevents sharp syringe needle from causing to damage to medical staff or patient.
Based on above-mentioned purpose, the present invention provides a kind of puncture needle protection devices comprising:
Sleeve, both ends in the axial direction are respectively equipped with first port and second port；The sleeve inner has
Along the first passage of the perforation of its axial direction setting, and the second channel of the radial direction setting along sleeve, described first
Channel is for accommodating puncture needle；
Stop block is set in the second channel, the first axle passed through for puncture needle is offered on the stop block
To through-hole, the first inclined-plane is additionally provided on the stop block；
Sliding block, be set to first passage in, the sliding block be equipped with matched second inclined-plane in first inclined-plane, it is described
The second axially extending bore passed through for puncture needle is also provided on sliding block；
Elastic component is set in the first passage, and the elastic component applies axial thrust to the sliding block；
Wherein, when the stop block is located at the first station, second on first axis through-hole and sliding block thereon is axial
Through-hole centering, puncture needle pass through the second axially extending bore and first axis through-hole and are pierced by from first port；When puncture needle bounces back to
When from the position that first axis through-hole is deviate from, the sliding block slides in first passage under the axial thrust effect of elastic component,
And by matched first inclined-plane and the second slope driving stop block sleeve slid inward in the radial direction to second station,
When the stop block is located at second station, the first axis through-hole is misaligned with puncture needle, to prevent puncture needle from passing through the
One axially extending bore and be pierced by from the first port.
Further, in puncture needle protection device of the present invention, the sliding block is set under it relative to stop block
Side, the elastic component are set between sliding block and the second port of sleeve.
It should be noted that in other implementations, thus it is possible to vary the relative position of stop block, sliding block and elastic component
Relationship, and be not necessarily intended to be set to sliding block below relative to stop block, elastic component is set to the lower section of sliding block, other can be by cunning
The set-up mode that the axial position of block is changed into the radial displacement of stop block is also feasible.
Further, in puncture needle protection device of the present invention, the first passage includes at least major diameter
Channel and smaller diameter passage, the sliding block are set in major diameter channel, and are limited by the bottom end end face in major diameter channel.
Further, in puncture needle protection device of the present invention, the side wall of the first passage is equipped with and cunning
The guide groove of block adaptation, to provide guiding role to sliding of the sliding block in first passage.
Further, in puncture needle protection device of the present invention, the sliding block include: slider body and be set to institute
State the guide post of slider body two sides；Second axially extending bore is set on the slider body, and second inclined-plane is set to institute
It states in guide post, the guide post is adaptedly slidably connected with the guide groove；Correspondingly, the side of the stop block is equipped with suitable
The accommodation groove of the guide post is accommodated with ground.
Further, in puncture needle protection device of the present invention, the end face of the stop block in radial directions
For arcwall face, the axle center (axle center of the imaginary circles cylinder i.e. where arcwall face) of the arcwall face and the axle center weight of the sleeve
It closes.
Further, in puncture needle protection device of the present invention, diameter (the i.e. arcwall face institute of the arcwall face
Imaginary circles cylinder diameter) it is equal with the diameter of the sleeve.
Another object of the present invention is to provide a kind of trochar, which there is puncture needle described above to protect dress
It sets, to improve the safety of trochar in use.
Based on above-mentioned purpose, the present invention also provides a kind of trochars comprising:
Puncture needle component comprising hollow puncture needle, the puncture needle have tail end and head end in its axial direction；
Sheath assembly comprising sleeve body, described sleeve pipe ontology have proximally and distally in its axial direction；And
Puncture needle protection device as described above is set between the puncture needle component and sheath assembly；
Wherein, the puncture needle passes through the puncture needle protection device and is inserted in described sleeve pipe ontology.
In the technical scheme, sleeve body can be made of materials such as FEP, PTU.The internal diameter of sleeve body can be by
It is thick to arrive thin various models, but should be adapted to simultaneously with the outer diameter of corresponding puncture needle.
Further, in trochar of the present invention, the puncture needle component further include:
Needle stand, one end are connect with the tail end of the puncture needle, are equipped in the needle stand and are connected with the hollow puncture needle
Logical needle stand channel；
Venting plug is connect with the other end of the needle stand.
In the technical scheme, puncture needle is preferably the steel needle of hard.The model of puncture needle can be from thick to thin each
Kind model, such as 15G-24G, consequently facilitating medical staff or patient select according to actual needs.Needle stand can be plastics
Needle stand, but the size in needle stand channel should be matched with puncture needle, so that puncture needle can be firmly set in needle stand.It wears
The tail end of pricker can be achieved a fixed connection with needle stand by bonding mode.It is of course also possible to use technology people in the art
The other modes that know of member realize the connection of puncture needle tail end and needle stand.
In the technical scheme, venting plug can be the plastic part of taper, inside there is hollow pipeline, and pipeline one end is opened
It puts, the other end is covered with fluid-tight PTFE film of breathing freely.Venting plug is set to the other end of needle stand.In certain embodiments
In, the other end of needle stand can be equipped with the step being adapted to venting plug can when venting plug stoppers the step of the needle stand other end
Blood outflow is prevented to realize closed.
Further, in trochar of the present invention, the needle stand also has outwardly directed alar part.
The alar part is set, so that needle stand easily facilitates gripping, to improve the ease of use of trochar.
Further, when trochar of the present invention includes stop part, the stop part is arranged at least wrap
Gasket is included, the gasket has centre bore；Correspondingly, the head end of the puncture needle has limiting section, the peripheral ruler of the limiting section
The very little internal diameter for being set to larger than the centre bore.
Since the Outside Dimensions of limiting section are greater than the internal diameter of gasket hollow hole, limiting section will be blocked by centre bore as a result,
So that puncture needle can not be deviate from from the second port of sleeve.
Further, the limiting section is in flat, and the width of the limiting section is greater than the internal diameter of the centre bore.
Further, in trochar of the present invention, described sleeve pipe ontology opens up on the side wall close to its distal end
There is at least one areole.
The diameter of at least one areole is less than the internal diameter of sleeve body.Areole is opened up in sleeve body to be mentioned
The flow of high blood or other fluids disengaging sleeve body.In addition, areole additionally aids reduction since sleeve body is in blood vessel
It is interior it is adherent caused by the adverse effect that reduces of blood or other fluid flows.
Further, the areole can be equipped with multiple, and multiple areole symmetrically is arranged or non-right
Claim ground setting.
Further, in trochar of the present invention, the distal end of described sleeve pipe ontology has wedge-shaped part, the wedge shape
The outer diameter in portion is towards distally gradually becoming smaller.This structure can reduce the resistance that trochar is subject in puncture process.
Further, in one embodiment of the invention, described sleeve pipe component further include:
The casing seat of inner hollow, the both ends of described sleeve pipe seat in the axial direction be separately arranged as the first open end and
Second open end, described sleeve pipe seat also have the wall port opened up on side wall；Wherein, first open end and the set
The proximal end of tube body connects, and second open end is equipped with the stop block accommodation groove of indent, with the puncture needle protection device
Stop block be adapted to connection；
Side pipe, one end are connect with the wall port.
In the technical scheme, casing seat is triplate line, wherein the first open end and sleeve body can pass through rivet
Or the mode of glue bonding achieves a fixed connection, the second open end passes through stop block accommodation groove and puncture needle protection device
Stop block adaptation connection, the wall port as third open end are connect with side pipe.Side pipe can be by PVC or other materials system
At hose.
Further, in trochar of the present invention, the other end of the side pipe is connected with connector.
Above-mentioned connector can be female Luer, be also possible to anti-backflow connector or other function three-way connection automatically.
Further, in trochar of the present invention, the side pipe is equipped with the folder for cutting off flow path in side pipe
Tight part.
Above-mentioned clamping element can be non-return folder.Over the course for the treatment of, operator, which can according to need, clutches non-return folder, with
Anti- Hemostatic Oral Liquid or patient body fluid backflow and overflow trochar.
Further, in trochar of the present invention, described sleeve pipe component further includes anti-overflow plug, is set to casing seat
Position between interior second open end and wall port.
Above-mentioned anti-overflow plug can be made of soft materials such as butadiene-styrene rubber or silicon rubber, so that both playing prevents overflow
Effect also enables puncture needle to pass through anti-overflow plug.
Further, anti-overflow fill in close to one end of wall port is in inclined-plane or parabola face, the inclined-plane or parabolic
Line face is tangentially arranged with the side pipe；And/or the anti-overflow other end filled in close to the second open end is equipped with counterbore.
In the above-mentioned technical solutions, counterbore is set beyond the Great Wall anti-overflow, it can be in order to the positioning and assembly of anti-overflow plug.In addition,
Anti-overflow fill in is arranged to close to one end of wall port in inclined-plane or parabola face, and tangent with side pipe, is blood in order to prevent
It is deposited in the position in sleeve body, to prevent blood coagulation phenomenon.
Further, in another embodiment of the invention, described sleeve pipe component further include:
The casing seat of inner hollow, one end are connect with the proximal end of described sleeve pipe ontology；
Hose is connected, one end is connect with the other end of described sleeve pipe seat；
The back seat of inner hollow is connected with the other end of the connection hose, and the end of the back seat is equipped with indent
Stop block accommodation groove, to be adapted to connection with the stop block for puncturing needle protection device.
In the technical scheme, sleeve body can be fixedly connected by way of riveting or bonding with casing seat, set
By connection hose connection between tube socket and back seat, the effect for connecting hose is: on the one hand to connector sleeve tube socket and back seat；
On the other hand, the setting of hose is connected it is also possible that medical staff can close connection using tool holders such as haemostatic clamp when needed
The flow path of hose.
Further, the connection hose is blood compatibility hose.When blood vessel is connected on back seat, blood phase
The use of capacitive hose can reduce the influence to the sleeve body being embedded in blood vessel.
Further, the connection hose is equipped with the clamping element for cutting off flow path in connection hose.The clamping element
It can be haemostatic clamp as previously described or other tools.
It should be noted that each technical characteristic preferably, further, further described herein, not
In the case where conflicting or conflict occurs, can mutually it be freely combined to form a variety of different technical solutions.
Puncture needle protection device of the present invention, compact structure is compact, and component is simplified, and process and assemble is convenient, can have
Effect realizes the protective action to puncture needle, to avoid the damage to medical staff or patient.
Trochar of the present invention when in use, when the puncture needle for completing to puncture is extracted from sleeve body, is worn
Pricker can be blocked in the casing for puncturing needle protection device, to prevent that needle point from piercing out again and makes to medical staff or patient
At damage.
It is more that puncture needle protection device and trochar of the present invention can be used for intravenous drip, blood transfusion and haemodialysis etc.
Kind therapeutic process, it is easy-to-use, there is very strong applicability.
Detailed description of the invention
Fig. 1 shows the schematic perspective view of the present invention for puncturing needle protection device.
Fig. 2 shows the schematic diagram of the section structure shown in FIG. 1 for puncturing needle protection device.
Fig. 3 shows the structural representation of the stop block of puncture needle protection device of the present invention in one embodiment
Figure.
Fig. 4 shows the structural representation of the sliding block of puncture needle protection device of the present invention in one embodiment
Figure.
Fig. 5 shows puncture needle protection device of the present invention in the schematic diagram of the section structure of the first station.
Fig. 6 shows puncture needle protection device of the present invention in the schematic perspective view of the first station.
Fig. 7 shows puncture needle protection device of the present invention in the schematic diagram of the section structure of second station.
Fig. 8 shows puncture needle protection device of the present invention in the schematic perspective view of second station.
Fig. 9 shows the structural schematic diagram of trochar of the present invention in one embodiment.
Figure 10 shows the separate structure schematic diagram of trochar shown in Fig. 9.
Figure 11 shows the structural schematic diagram of the sheath assembly of trochar of the present invention in one embodiment.
Figure 12 shows structural schematic diagram of the trochar of the present invention under another embodiment.
Figure 13 shows the separate structure schematic diagram of trochar shown in Figure 12.
Figure 14 shows the structural schematic diagram of sheath assembly of the trochar of the present invention under another embodiment.
Specific embodiment
Come below in conjunction with Figure of description and specific embodiment to puncture needle protection device of the present invention and set
Pipe needle is further described in detail, but the detailed description is not construed as limiting the invention.
Fig. 1 shows the schematic perspective view of the present invention for puncturing needle protection device.
Fig. 2 shows the schematic diagram of the section structure shown in FIG. 1 for puncturing needle protection device.
As depicted in figs. 1 and 2, puncture needle protection device of the present invention includes: sleeve 11, in the axial direction
Both ends are respectively equipped with first port and second port (i.e. the upper port and lower port that can be seen that in Fig. 2), have inside sleeve 11
The second channel for thering is the first passage P along the perforation of its axial direction setting and the radial direction along sleeve to be arranged；Stop block
12 are set in second channel, and the first axis through-hole 121 passed through for puncture needle is offered on stop block, is additionally provided on stop block
First inclined-plane；Sliding block 13 is set in first passage P, and is located at the lower section of stop block 12, and sliding block 13 is equipped with and the first inclined-plane
The second inclined-plane matched, in addition, being also provided with the second axially extending bore 131 passed through for puncture needle on sliding block 13；Spring 14 is set to
In first passage P, and between sliding block 13 and the second port of sleeve 11, to apply axial thrust to sliding block 13.
There is major diameter channel and smaller diameter passage from the first passage P that can also be seen that in sleeve 11 in Fig. 1 and Fig. 2,
Wherein sliding block 13 is set in major diameter channel, and is limited by the bottom end end face in major diameter channel, and spring 14 is logical set on minor diameter
In road.
In addition, in the embodiment that Fig. 1 and Fig. 2 are shown, it is additionally provided on the side wall of first passage P and is adapted to sliding block 13
Guide groove G, guide groove G can provide guiding role to upper and lower sliding of the sliding block 13 in first passage P.
In addition, can also be seen that preferably from Fig. 1 and Fig. 2, puncture needle protection device of the present invention can also include
As the gasket 15 of stop part, gasket 15 close to sleeve 11 second port and be set in first passage P.During gasket 15 is equipped with
Heart hole, to prevent the puncture needle in first passage P from deviating from via second port.
Fig. 3 shows the structural representation of the stop block of puncture needle protection device of the present invention in one embodiment
Figure.
From figure 3, it can be seen that with the first axis through-hole 121 and the first inclined-plane of eccentric setting on stop block 12
122.Two end faces of stop block 12 in radial directions are arcwall face W, the axle center of the imaginary circles cylinder where arcwall face W
It should be overlapped with the axle center of sleeve.In addition, from Fig. 1 it can also be seen that the diameter and set of the imaginary circles cylinder where arcwall face W
The diameter of cylinder 11 is equal, that is to say, that when stop block 12 is driven fully into sleeve, the arcwall face of stop block 12 just becomes
A part of 11 outer circumference surface of sleeve.
Fig. 4 shows the structural representation of the sliding block of puncture needle protection device of the present invention in one embodiment
Figure.
Figure 4, it is seen that sliding block 13 includes slider body 132 and is respectively arranged on two of 132 two sides of slider body
Guide post 133.Second axially extending bore 131 is set on slider body 132, and the top surface of guide post 133 is arranged to the second inclined-plane
134, the second inclined-plane 134 is adapted to the first inclined-plane 122 on stop block 12.Guide post 133 with shown in Fig. 1 for leading
It is adaptedly slidably connected to slot G.In addition, the accommodation groove 123 of 12 side of stop block shown in Fig. 3 is also to lead for adaptedly accommodating
To column 133.
Fig. 5 and Fig. 6 shows that puncture needle of the present invention is anti-in the form of section plan and three-dimensional cutaway view respectively
State of the protection unit in the first station.
As shown in Figure 5 and Figure 6, when trochar, which is in, to be stored or puncture state, that is, puncture of the present invention
When needle protection device is under the first station state, stop block 12 also is located at its first station, in this case, stop block 12
Ground is divided to stretch out from sleeve, and 131 centering of the second axially extending bore on its first axis through-hole 121 and sliding block 13, puncture needle N are worn
It crosses the second axially extending bore 131 and first axis through-hole 121 and is pierced by from the first port of sleeve 11, is i.e. puncture needle N is passed completely through
Puncture needle protection device, that is to say, that in this state, puncture needle N is through entire first passage P's.In this case,
Spring 14 is in compressed state, therefore it continues to apply thrust axially upwards to sliding block 13, but since puncture needle N is passed through
First axis through-hole 121 and the second axially extending bore 131, therefore to have limited stop block 12 opposite with sliding block 13 by puncture needle N
Sliding.
Fig. 7 and Fig. 8 shows that puncture needle of the present invention is anti-in the form of section plan and three-dimensional cutaway view respectively
State of the protection unit in second station.
When removing needle, when puncture needle is bounced back to from the position that first axis through-hole 121 is deviate from, sliding block 13 is just at once in bullet
Under the thrust axially upwards of spring 14 in first passage P upward sliding, and by matched first inclined-plane 122 and second
Inclined-plane 134 pushes stop block 12, in the radial direction along second channel slid inward to second station, to work as backstop in sleeve 11
When block 12 is located at second station, the guide post 133 of sliding block 13 has been dropped into the accommodation groove 123 of stop block 12, and first axis is logical
Hole 121 and puncture needle N no longer centering, as a result, puncture needle N can not just pass through first axis through-hole 121 and from the first of sleeve 11
Port is pierced by.
In addition, as shown in Figure 7 and Figure 8, and Fig. 5 and Fig. 6 is combined if necessary, it is filled when puncture needle of the present invention protects
When installing the gasket 15 as stop part, since gasket 15 can block the limiting section X on puncture needle N, so that puncture needle N
It can not be skidded off from the second open end of 11 lower section of sleeve.As such, the needle point of puncture needle N is worn completely under second station state
Pricker guard covers, avoid medical staff and patient is damaged.
Fig. 9 shows the structural schematic diagram of trochar of the present invention in one embodiment.
Figure 10 shows the separate structure schematic diagram of trochar shown in Fig. 9.
As shown in Figure 9 and Figure 10, in this embodiment, trochar of the present invention includes: puncture needle component 3, set
Tube assembly 21, and the puncture needle protection device 1 between puncture needle component 3 and sheath assembly 21.Storing and puncturing shape
Under state, the puncture needle in puncture needle component 3, which passes through, to be punctured needle protection device 1 and is inserted in the sleeve body of sheath assembly 21.
Under the present embodiment, puncturing needle protection device 1 has structure as described above.
Under the present embodiment, puncture needle component 3 includes: hollow puncture needle 31, needle stand 32 made of plastics and
Venting plug 33.Wherein, the model of puncture needle 31 can be various models from thick to thin, such as 15G-24G, consequently facilitating doctor
Shield personnel or patient select according to actual needs.The tail end of puncture needle 31 is Nian Jie with one end of needle stand 32, needle stand 32
The other end is connect with venting plug 33.The needle stand channel being connected to hollow puncture needle 31 is equipped in needle stand 32.Needle stand channel
Size is matched with the outer diameter of puncture needle 31, so that puncture needle 31 can be firmly set in needle stand 32.In addition, from figure
9 and Figure 10 can also be seen that needle stand 32 also has outwardly directed alar part 321, this holds puncture needle component more easily,
To improve its ease of use.Under the present embodiment, venting plug 33 can be the plastic part of taper, inside have hollow
Pipeline, pipeline one end open, the other end are covered with fluid-tight PTFE film of breathing freely.In some embodiments, needle stand 32
The one end connecting with venting plug 33 is also provided with the step being adapted to venting plug 33, when venting plug 33 stoppers the platform in needle stand 32
When rank, may be implemented it is closed, to prevent blood outflow.
In addition, can also have limiting section X as shown in Figure 5, the limiting section in certain embodiments, on puncture needle 31
It can be a flat limiting section or the limiting section that expands, the Outside Dimensions of the limiting section be set to larger than Fig. 2 institute
The internal diameter of the centre bore of the gasket 15 shown.As such, limiting section will be blocked by centre bore, so that puncture needle 31 can not be from
The second port of sleeve is deviate from.
The structure that Figure 11 shows further the sheath assembly of trochar of the present invention in one embodiment is shown
It is intended to.
As shown in figure 11, in this embodiment, sheath assembly 21 is in Y type, so that it is with puncture needle component and wears
Pricker protective device may be constructed a kind of Y molded cannula needle as shown in Figure 9 and Figure 10.It can be seen from fig. 11 that sheath assembly
21 include: the casing seat 211 of inner hollow, and there are three ports for the casing seat 211 tool, wherein both ends difference in the axial direction
It is arranged to the first open end and the second open end, in addition, being also provided with wall port 216 on the side wall of casing seat 211.Its
In, the first open end is fixedly connected by way of be bonded or rivet with sleeve body 212, and the second open end holds equipped with stop block
Set slot 214, for puncture needle protection device stop block 12 be adapted to connection, as third open end wall port 216 and
The straight portion of casing seat 211 is in an angle, and is connect with side pipe 215.Side pipe 215 can be to be made of PVC or other materials
Hose.
Sleeve body 212 can be made of materials such as FEP, PTU.The internal diameter of sleeve body 212 can be from thick to thin
Various models, but need to be adapted to the outer diameter of corresponding puncture needle.
In addition, from can also be seen that sleeve body 212 is also provided with areole on the side wall close to its distal end in Figure 11
H.The diameter of areole H is less than the internal diameter of sleeve body 212.Opened up in sleeve body 212 areole H can be improved blood or
The flow of other fluids disengaging sleeve body 212.In addition, areole H, which is additionally aided, to be reduced due to sleeve body 212 in the blood vessels
The adverse effect that blood caused by adherent or other fluid flows reduce.Areole H can be equipped with it is multiple, multiple areole can
Symmetrically to be arranged, mutually can also asymmetricly be arranged.
In addition, it can also be seen that the distal end of sleeve body 212 has a wedge-shaped part from Figure 11, the outer diameter of wedge-shaped part towards
The distal end of sleeve body 212 gradually becomes smaller.This structure can reduce the resistance that trochar is subject in puncture process.
Please continue to refer to Figure 11, in the present embodiment, sheath assembly 21 further includes anti-overflow plug 213, is set to casing seat
In 211, and it is set to the position between the second open end and wall port 216.Anti-overflow plug 213 can be by butadiene-styrene rubber or silicon
The soft materials such as rubber are made, to both play the role of preventing overflow, puncture needle are also enabled to pass through anti-overflow plug.
Preferably, in certain implementations, anti-overflow plug 213 is in inclined-plane or parabola close to one end end face of wall port 216
Face, the inclined-plane or parabola face are tangentially arranged with side pipe 215, to effectively prevent that blood coagulation occurs in sleeve body.In addition, anti-
The other end face of the plug 213 close to the second open end of overflowing can be equipped with counterbore, in order to the positioning and assembly of anti-overflow plug 213.
Please continue to refer to Fig. 9 and Figure 10, the tail end of side pipe 215 is connected with connector 5.The connector 5 can be female Luer,
It can be automatic anti-backflow connector or other function three-way connection.Further, it is also possible to find out, side pipe 215 is equipped with and is used for
Cut off the clamping element 4 of flow path in side pipe.The clamping element 4 can be non-return folder.As a result, over the course for the treatment of, operator can be with
Non-return folder is clutched as needed, is backflowed to prevent Hemostatic Oral Liquid or patient body fluid and is overflowed trochar.
Fig. 1-Figure 11 is please referred to, when in use, puncture needle 31 is together with 212 quilt of sleeve body first for above-mentioned trochar
It is pierced into patient's body, in this case, the puncture needle 31 (namely puncture needle N shown in fig. 5) in trochar is passed completely through and worn
Pricker protective device 1 and in the sleeve body 212, and the stop block 12 for puncturing needle protection device is adaptedly placed in casing seat
In the stop block accommodation groove 214 of 211 ends so that puncture needle protection device 1 and sheath assembly 21 link together without
It can be disengaged from each other.Simultaneously in this case, stop block 12 is partly stretched out from sleeve, and its first axis through-hole 121 and cunning
131 centering of the second axially extending bore on block 13, puncture needle 31 pass through the second axially extending bore 131 and first axis through-hole 121 and
It is pierced by from the first port of sleeve 11.Meanwhile spring 14 is in compressed state, therefore it continues to apply axial direction to sliding block 13
Thrust, but since puncture needle 31 has passed through first axis through-hole 121 and the second axially extending bore 131, it has limited only
The opposite sliding of block 12 and sliding block 13.When needing to remove needle, puncture needle 31 is extracted from sleeve body 212, punctures steel
The needle point of needle 31 is exited from first axis through-hole 121, and in this case, sliding block 13 is just made in the axial thrust of spring 14 at once
It is slided in first passage P under, and pushes stop block 12 in sleeve by matched first inclined-plane 122 and the second inclined-plane 134
11 in the radial direction along second channel slid inward, first axis through-hole 121 and the no longer centering of puncture needle 31 at this time, by
This, puncture needle 31 can not just pass through first axis through-hole 121 and be pierced by from the first port of sleeve 11.At the same time, due to
Stop block 12 is pushed into sleeve 11, therefore stop block 12 can also take off out of 211 end of casing seat stop block accommodation groove 214
Out, to disconnect the connection for puncturing needle protection device 1 and sheath assembly 21.In addition, gasket 15 can be blocked and be worn during removing needle
The limiting section X on steel needle 31 is pierced, so that puncture needle 31 can not be skidded off by the second open end of 11 lower section of sleeve.
Figure 12 shows structural schematic diagram of the trochar of the present invention under another embodiment.
Figure 13 shows the separate structure schematic diagram of trochar shown in Figure 12.
As shown in Figure 12 and Figure 13, in this embodiment, trochar of the present invention includes: puncture needle component 3, set
Tube assembly 22, and the puncture needle protection device 1 between puncture needle component 3 and sheath assembly 22.Storing and puncturing shape
Under state, the puncture needle in puncture needle component 3, which passes through, to be punctured needle protection device 1 and is inserted in the sleeve body of sheath assembly 22.
It can be seen that the trochar in the embodiment different from Fig. 9 and Y molded cannula shown in Fig. 10 from Figure 12 and Figure 13
Needle is a kind of straight molded cannula needle.
In the present embodiment, puncturing needle protection device 1 has structure as described above.
In addition, in the present embodiment, puncture needle component 3 includes: hollow puncture needle 31, needle stand 34 made of plastics
And venting plug 33.Wherein, the model of puncture needle 31 can be various models from thick to thin, such as 15G-24G, thus just
It is selected according to actual needs in medical staff or patient.The tail end of puncture needle is Nian Jie with one end of needle stand 34, needle stand 34
The other end connect with venting plug 33.The needle stand channel being connected to hollow puncture needle 31 is equipped in needle stand 34.Needle stand channel
Size matched with the outer diameter of puncture needle 31 so that puncture needle 31 can firmly be set to needle stand 34 in.In this reality
It applies in mode, venting plug 33 can be the plastic part of taper, inside there is hollow pipeline, pipeline one end open, other end covering
There is fluid-tight PTFE film of breathing freely.In some embodiments, one end that needle stand 34 is connect with venting plug 33 can be equipped with
The step being adapted to venting plug 33, so that closed, Jin Erfang may be implemented when venting plug stoppers the step in needle stand 34
Hemostatic Oral Liquid outflow.
In addition, can also have limiting section X as shown in Figure 5, the limit in some embodiments, on puncture needle 31
Portion can be a flat limiting section or the limiting section that expands, the Outside Dimensions of the limiting section are set to larger than Fig. 2
Shown in gasket 15 centre bore internal diameter.As such, limiting section will be blocked by centre bore, so that puncture needle 31 can not
Deviate from from the second port of sleeve.
Figure 14 shows further the structure of sheath assembly of the trochar of the present invention under another embodiment
Schematic diagram.
As shown in figure 14, in this embodiment, sheath assembly 22 is in flat type.As can be seen from Figure 14, casing group
Part 22 includes: the casing seat 221 of inner hollow, and one end is fixedly connected by way of be bonded or rivet with sleeve body 222,
Its other end is connected with the one end for connecting hose 223；The back seat 224 of inner hollow is connected with the other end for connecting hose 223, after
The end of seat 224 is equipped with stop block accommodation groove 225, for being adapted to connection with the stop block for puncturing needle protection device.Wherein, it connects
Hose 223 is preferably blood compatibility hose.
In addition, in other embodiments, connecting and being also provided on hose 223 for cutting off flow path in connection hose
Clamping element, such as haemostatic clamp or other tools.
In the present embodiment, sleeve body 222 can be made of materials such as FEP, PTU.The internal diameter of sleeve body 222 can be with
It is various models from thick to thin, but needs to be adapted with the outer diameter of corresponding puncture needle.
In addition, from can also be seen that sleeve body 222 is also provided with areole on the side wall close to its distal end in Figure 14
H.The diameter of areole H is less than the internal diameter of sleeve body 222.Opened up in sleeve body 222 areole H can be improved blood or
The flow of other fluids disengaging sleeve body 222.In addition, areole H, which is additionally aided, to be reduced due to sleeve body 222 in the blood vessels
The adverse effect that blood caused by adherent or other fluid flows reduce.Areole H can be equipped with it is multiple, multiple areole can
Symmetrically to be arranged, mutually can also asymmetricly be arranged.
In addition, it can also be seen that the distal end of sleeve body 222 has wedge-shaped part, the outer diameter court of the wedge-shaped part from Figure 14
The distal end of sleeve body 222 gradually become smaller.This structure can reduce the resistance that trochar is subject in puncture process.
Please refer to Fig. 1-Fig. 8 and Figure 12-Figure 14, above-mentioned trochar when in use, first puncture needle 31 together with
Sleeve body 222 is pierced patient's body, in this case, puncture needle 31 in trochar (namely puncture needle shown in fig. 5
N it) passes completely through and punctures needle protection device 1 and be in sleeve body 222, and the stop block 12 for puncturing needle protection device 1 is suitable
It is placed in ground in the stop block accommodation groove 225 of 224 end of back seat, so that puncturing needle protection device 1 and the company of sheath assembly 22
It is connected together without being disengaged from each other.Simultaneously in this case, stop block 12 is partly stretched out from sleeve 11, and first axis
131 centering of the second axially extending bore on through-hole 121 and sliding block 13, puncture needle 31 pass through the second axially extending bore 131 and first axle
It is pierced by through-hole 121 from the first port of sleeve 11.Meanwhile spring 14 is in compressed state, therefore it continues to cunning
Block 13 applies axial thrust, but since puncture needle 31 has passed through first axis through-hole 121 and the second axially extending bore 131,
Its opposite sliding for having limited stop block 12 and sliding block 13.When needing to remove needle, puncture needle 31 is by from sleeve body 222
It extracts, the needle point of puncture needle 31 is exited from first axis through-hole 121, and in this case, sliding block 13 is just at once in spring 14
Axial thrust effect under slided in first passage P, and by matched first inclined-plane 122 and the second inclined-plane 134 promotion stop
Block 12 in sleeve 11 in the radial direction along second channel slid inward, first axis through-hole 121 and puncture needle at this time
31 no longer centerings, puncture needle 31 can not just pass through first axis through-hole 121 and be pierced by from the first port of sleeve 11 as a result,.
At the same time, since stop block 12 is pushed into sleeve 11, stop block 12 can also hold from the stop block of 224 end of back seat
Abjection in slot 225 is set, to disconnect the connection for puncturing needle protection device 1 and sheath assembly 22.In addition, during removing needle, pad
Piece 15 can block the limiting section X on puncture needle 31, so that puncture needle 31 can not be opened by the second of 11 lower section of sleeve
Mouth end skids off.
The puncture needle protective device structure compact of the respective embodiments described above description, component are simplified, and process and assemble is convenient,
The protective action to puncture needle can be effectively realized, to avoid the damage to medical staff or patient.
In addition, trochar described in the respective embodiments described above is when in use, when the puncture needle for completing to puncture is by from casing
When extracting in ontology, puncture needle can be blocked in the casing for puncturing needle protection device, to prevent that needle point from piercing out again and right
Medical staff or patient cause to damage.
The claimed technical solution of the present invention is not limited to above-mentioned each specific embodiment.In addition, as described above
Each technical characteristic also can be combined with each other in the case where conflicting or conflict does not occur.If those skilled in the art
All deformations for directly exporting or associating from present disclosure, are within the scope of protection of the invention.
Claims (25)
1. a kind of puncture needle protection device characterized by comprising
Sleeve, both ends in the axial direction are respectively equipped with first port and second port；The sleeve inner has along it
The first passage of the perforation of axial direction setting, and the second channel of the radial direction setting along sleeve, the first passage
For accommodating puncture needle；
Stop block is set in the second channel, and it is logical that the first axis passed through for puncture needle is offered on the stop block
Hole is additionally provided with the first inclined-plane on the stop block；
Sliding block is set in first passage, and the sliding block is equipped with and matched second inclined-plane in first inclined-plane, the sliding block
On be also provided with the second axially extending bore passed through for puncture needle；
Elastic component is set in the first passage, and the elastic component applies axial thrust to the sliding block；
Wherein, when the stop block is located at the first station, first axis through-hole thereon and the second axially extending bore on sliding block
Centering, puncture needle pass through the second axially extending bore and first axis through-hole and are pierced by from first port；When puncture needle is bounced back to from
When the position of one axially extending bore abjection, the sliding block slides in first passage under the axial thrust effect of elastic component, and by
By matched first inclined-plane and the second slope driving stop block sleeve slid inward in the radial direction to second station, work as institute
When stating stop block and being located at second station, the first axis through-hole is misaligned with puncture needle, to prevent puncture needle from passing through first axle
It is pierced by through-hole from the first port.
2. puncturing needle protection device as described in claim 1, which is characterized in that the sliding block is set under it relative to stop block
Side, the elastic component are set between sliding block and the second port of sleeve.
3. puncturing needle protection device as claimed in claim 2, which is characterized in that the first passage is logical including at least major diameter
Road and smaller diameter passage, the sliding block are set in major diameter channel, and are limited by the bottom end end face in major diameter channel.
4. puncturing needle protection device as described in claim 1, which is characterized in that the side wall of the first passage is equipped with and cunning
The guide groove of block adaptation, to provide guiding role to sliding of the sliding block in first passage.
5. puncturing needle protection device as claimed in claim 4, which is characterized in that the sliding block includes: slider body and is set to
The guide post of the slider body two sides；Second axially extending bore is set on the slider body, and second inclined-plane is set to
In the guide post, the guide post is adaptedly slidably connected with the guide groove；Correspondingly, the side of the stop block is equipped with
Adaptedly accommodate the accommodation groove of the guide post.
6. puncturing needle protection device as described in claim 1, which is characterized in that the end face of the stop block in radial directions
For arcwall face, the axle center of the arcwall face is overlapped with the axle center of the sleeve.
7. puncturing needle protection device as claimed in claim 6, which is characterized in that the diameter of the arcwall face and the sleeve
Diameter is equal.
8. puncturing needle protection device as described in claim 1, which is characterized in that further include stop part, it is logical to be set to first
Close to the position of the second port in road, to prevent the puncture needle in first passage from deviating from via the second port.
9. puncturing needle protection device as described in claim 1, which is characterized in that the elastic component includes at least spring.
10. a kind of trochar characterized by comprising
Puncture needle component comprising hollow puncture needle, the puncture needle have tail end and head end in its axial direction；
Sheath assembly comprising sleeve body, described sleeve pipe ontology have proximally and distally in its axial direction；
Puncture needle protection device as described in any one of claim 1-9 is set to the puncture needle component and casing group
Between part；
Wherein, the puncture needle passes through the puncture needle protection device and is inserted in described sleeve pipe ontology.
11. trochar as claimed in claim 10, which is characterized in that the puncture needle component further include:
Needle stand, one end are connect with the tail end of the puncture needle, are equipped in the needle stand and to be connected to the hollow puncture needle
Needle stand channel；
Venting plug is connect with the other end of the needle stand.
12. trochar as claimed in claim 11, which is characterized in that the needle stand also has outwardly directed alar part.
13. trochar as claimed in claim 10, which is characterized in that when described sleeve pipe needle includes stop part, the backstop
Part is arranged to include at least gasket, and the gasket has centre bore；The head end of the puncture needle has limiting section, the limiting section
Outside Dimensions be set to larger than the internal diameter of the centre bore.
14. trochar as claimed in claim 13, which is characterized in that the limiting section is in flat, the width of the limiting section
Degree is greater than the internal diameter of the centre bore.
15. trochar as claimed in claim 10, which is characterized in that wherein sleeve body is opened on the side wall close to its distal end
Equipped at least one areole.
16. trochar as claimed in claim 15, which is characterized in that the areole is equipped with multiple, multiple areole phase
Mutually it is symmetrically arranged or is asymmetricly arranged.
17. trochar as claimed in claim 10, which is characterized in that the distal end of described sleeve pipe ontology has wedge-shaped part, described
The outer diameter of wedge-shaped part is towards distally gradually becoming smaller.
18. the trochar as described in any one of claim 10-17, which is characterized in that described sleeve pipe component further include:
The casing seat of inner hollow, the both ends of described sleeve pipe seat in the axial direction are separately arranged as the first open end and second
Open end, described sleeve pipe seat also have the wall port opened up on side wall；Wherein, first open end and described sleeve pipe sheet
The proximal end of body connects, and second open end is equipped with the stop block accommodation groove of indent, to puncture stopping for needle protection device with described
Block adaptation connection；
Side pipe, one end are connect with the wall port.
19. trochar as claimed in claim 18, which is characterized in that the other end of the side pipe is connected with connector.
20. trochar as claimed in claim 18, which is characterized in that the side pipe is equipped with for cutting off flow path in side pipe
Clamping element.
21. trochar as claimed in claim 18, which is characterized in that described sleeve pipe component further includes anti-overflow plug, is set to institute
State the position in casing seat between the second open end and wall port.
22. trochar as claimed in claim 21, which is characterized in that anti-overflow fill in close to one end of wall port is in inclined-plane
Or parabola face, the inclined-plane or parabola face are tangentially arranged with the side pipe；And/or the anti-overflow plug is opened close to second
The other end at mouth end is equipped with counterbore.
23. the trochar as described in any one of claim 10-17, which is characterized in that described sleeve pipe component further include:
The casing seat of inner hollow, one end are connect with the proximal end of described sleeve pipe ontology；
Hose is connected, one end is connect with the other end of described sleeve pipe seat；
The back seat of inner hollow is connected with the other end of the connection hose, and the end of the back seat is equipped with the backstop of indent
Block accommodation groove, to be adapted to connection with the stop block for puncturing needle protection device.
24. trochar as claimed in claim 23, which is characterized in that the connection hose is blood compatibility hose.
25. trochar as claimed in claim 23, which is characterized in that the connection hose is equipped with for cutting off connection hose
The clamping element of interior flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447788.4A CN109078238A (en) | 2017-06-14 | 2017-06-14 | A kind of puncture needle protection device and trochar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447788.4A CN109078238A (en) | 2017-06-14 | 2017-06-14 | A kind of puncture needle protection device and trochar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109078238A true CN109078238A (en) | 2018-12-25 |
Family
ID=64839456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710447788.4A Pending CN109078238A (en) | 2017-06-14 | 2017-06-14 | A kind of puncture needle protection device and trochar |
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| Country | Link |
|---|---|
| CN (1) | CN109078238A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110694141A (en) * | 2019-10-15 | 2020-01-17 | 苏州林华医疗器械股份有限公司 | Needle-prick-proof and damage-free needle |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5447501A (en) * | 1991-04-11 | 1995-09-05 | Boc Ohmeda Aktiebolag | Needle protection device |
| US20020103463A1 (en) * | 2001-01-29 | 2002-08-01 | Luther Ronald B. | Method of retaining a tip protector on a needle with a curved tip |
| CN101909681A (en) * | 2007-11-21 | 2010-12-08 | 贝克顿·迪金森公司 | Needle safety device |
| CN102716524A (en) * | 2006-07-31 | 2012-10-10 | B.布劳恩梅尔松根股份公司 | Needle tip protector housing positioned inside a catheter hub |
| US20130046315A1 (en) * | 2002-07-04 | 2013-02-21 | B. Braun Melsungen Ag | Catheter insertion device |
| US20130253443A1 (en) * | 2001-02-26 | 2013-09-26 | B. Braun Melsungen Ag | Protection device for an injection needle |
| US20140135701A1 (en) * | 1997-08-20 | 2014-05-15 | B. Braun Melsungen Ag | Spring clip safety iv catheter |
| US8801663B2 (en) * | 2009-07-02 | 2014-08-12 | B. Braun Melsungen Ag | Protective device for an injection needle |
| CN105142707A (en) * | 2012-12-20 | 2015-12-09 | 德尔塔梅德股份公司 | Cannula needle with protective member |
| CN106667531A (en) * | 2017-01-16 | 2017-05-17 | 浙江伏尔特医疗器械股份有限公司 | Safe disposable biopsy sampling puncture needle |
| CN207856028U (en) * | 2017-06-14 | 2018-09-14 | 美敦力公司 | A kind of puncture needle protection device and trochar |
-
2017
- 2017-06-14 CN CN201710447788.4A patent/CN109078238A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5447501A (en) * | 1991-04-11 | 1995-09-05 | Boc Ohmeda Aktiebolag | Needle protection device |
| US20140135701A1 (en) * | 1997-08-20 | 2014-05-15 | B. Braun Melsungen Ag | Spring clip safety iv catheter |
| US20020103463A1 (en) * | 2001-01-29 | 2002-08-01 | Luther Ronald B. | Method of retaining a tip protector on a needle with a curved tip |
| US20130253443A1 (en) * | 2001-02-26 | 2013-09-26 | B. Braun Melsungen Ag | Protection device for an injection needle |
| US20130046315A1 (en) * | 2002-07-04 | 2013-02-21 | B. Braun Melsungen Ag | Catheter insertion device |
| CN102716524A (en) * | 2006-07-31 | 2012-10-10 | B.布劳恩梅尔松根股份公司 | Needle tip protector housing positioned inside a catheter hub |
| CN101909681A (en) * | 2007-11-21 | 2010-12-08 | 贝克顿·迪金森公司 | Needle safety device |
| US8801663B2 (en) * | 2009-07-02 | 2014-08-12 | B. Braun Melsungen Ag | Protective device for an injection needle |
| CN105142707A (en) * | 2012-12-20 | 2015-12-09 | 德尔塔梅德股份公司 | Cannula needle with protective member |
| CN106667531A (en) * | 2017-01-16 | 2017-05-17 | 浙江伏尔特医疗器械股份有限公司 | Safe disposable biopsy sampling puncture needle |
| CN207856028U (en) * | 2017-06-14 | 2018-09-14 | 美敦力公司 | A kind of puncture needle protection device and trochar |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110694141A (en) * | 2019-10-15 | 2020-01-17 | 苏州林华医疗器械股份有限公司 | Needle-prick-proof and damage-free needle |
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