CN207856028U - A kind of puncture needle protection device and trochar - Google Patents
A kind of puncture needle protection device and trochar Download PDFInfo
- Publication number
- CN207856028U CN207856028U CN201720690498.8U CN201720690498U CN207856028U CN 207856028 U CN207856028 U CN 207856028U CN 201720690498 U CN201720690498 U CN 201720690498U CN 207856028 U CN207856028 U CN 207856028U
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- puncture needle
- trochar
- protection device
- needle
- sliding block
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Abstract
The utility model discloses a kind of puncture needle protection devices comprising：Sleeve；Stop block offers the first axis through-hole passed through for puncture needle, the first inclined-plane is additionally provided on stop block thereon；Sliding block, which is provided with matched second inclined-plane in the first inclined-plane, be further opened 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 are pierced by across the second axially extending bore and first axis through-hole 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, puncture needle is prevented to be pierced by from sleeve across first axis through-hole.In addition, the invention also discloses a kind of trochars with the puncture needle protection device.
Description
Technical field
The utility model is related to a kind of medical instrument more particularly to a kind of devices being used cooperatively with puncture needle.
Background technology
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 draw point, and in piercing process, the draw point 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 are carried on interior needle may also pollute environment and bring infection risk.
Utility model content
One of the purpose of this utility model is to provide a kind of puncture needle protection device, which can be right
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 utility model provides a kind of puncture needle protection device comprising：
Sleeve, both ends in the axial direction are respectively equipped with first port and second port；The sleeve inner has
The second channel of radial direction setting along the first passage of the perforation of its axial direction setting, and along sleeve, described first
Channel is for housing 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 further opened 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, first axis through-hole and second on sliding block thereon is axial
Through-hole centering, puncture needle are pierced by across the second axially extending bore and first axis through-hole from first port；When puncture needle bounces back to
From the position that first axis through-hole is deviate from when, the sliding block slides under the axial thrust effect of elastic component in first passage,
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 described in the utility model, the sliding block is set to relative to stop block
Below, the elastic component is set between sliding block and the second port of sleeve.
It should be noted that in other implementations, thus it is possible to vary stop block, sliding block and elastic component relative position
Relationship, and be not necessarily intended to that sliding block is made to be set to 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 described in the utility model, the first passage includes at least big
Diameter channels 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 described in the utility model, the side wall of the first passage is equipped with
The guide groove being adapted to sliding block, to provide guiding role to sliding of the sliding block in first passage.
Further, in puncture needle protection device described in the utility model, the sliding block includes：It slider body and sets
Guide post in the slider body both sides；Second axially extending bore is set on the slider body, and second inclined-plane is set
In in the guide post, the guide post is adaptedly slidably connected with the guide groove；Correspondingly, the side of the stop block is set
There is the storage tank for adaptedly housing the guide post.
Further, in puncture needle protection device described in the utility model, the stop block is in radial directions
End face is arcwall face, the axle center in axle center (axle center of the imaginary circles cylinder i.e. where arcwall face) and the sleeve of the arcwall face
It overlaps.
Further, in puncture needle protection device described in the utility model, diameter (the i.e. arc of the arcwall face
The diameter of imaginary circles cylinder where face) it is equal with the diameter of the sleeve.
The another object of the utility model is to provide a kind of trochar, and the trochar is anti-with puncture needle described above
Protection unit, to improve the safety of trochar in use.
Based on above-mentioned purpose, the utility model additionally provides a kind of trochar 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 is inserted in across the puncture needle protection device 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 described in the utility model, the puncture needle component further includes：
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 draw point 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 member other modes that know 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 have hollow pipeline, pipeline one end to open
It puts, the other end is covered with fluid-tight PTFE films 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 described in the utility model, 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 described in the utility model includes stop part, the stop part be arranged to
Include gasket less, the gasket has centre bore；Correspondingly, the head end of the puncture needle has a limiting section, the limiting section it is outer
Enclose the internal diameter being dimensioned to more than the centre bore.
Since the Outside Dimensions of limiting section are more 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 more than the internal diameter of the centre bore.
Further, in trochar described in the utility model, described sleeve pipe ontology is on the side wall close to its distal end
Offer 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 carried
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 harmful 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 described in the utility model, the distal end of described sleeve pipe ontology has wedge-shaped part, described
The outer diameter of wedge-shaped part is towards distally tapering into.This structure can reduce the resistance that trochar is subject in piercing process.
Further, in a kind of embodiment of the utility model, described sleeve pipe component further includes：
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 storage tank of indent, with the puncture needle protection device
Stop block adaptation 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 can pass through rivet with sleeve body
Or the mode that glue bonds achieves a fixed connection, the second open end by the stop block storage tank by with 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 described in the utility model, the other end of the side pipe is connected with connector.
Above-mentioned connector can be female Luer, can also be automatic anti-connector or other functional three-way connections of backflowing.
Further, in trochar described in the utility model, the side pipe is equipped with for cutting off flow path in side pipe
Clamping element.
Above-mentioned clamping element can be non-return folder.Over the course for the treatment of, operating personnel can clutch non-return folder as needed, with
Anti- Hemostatic Oral Liquid or patient body fluid backflow and overflow trochar.
Further, in trochar described in the utility model, described sleeve pipe component further includes anti-overflow plug, is set to set
Position in tube socket between the 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, and overflow is prevented to both play
Effect also enables puncture needle to pass through anti-overflow plug.
Further, the anti-overflow plug is in inclined-plane or parabola face, the inclined-plane or parabolic close to one end of wall port
Line face is tangentially arranged with the side pipe；And/or the other end of the anti-overflow plug 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 plug is arranged to be in inclined-plane or parabola face close to one end of wall port, 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 utility model, described sleeve pipe component further includes：
The casing seat of inner hollow, one end are connect with the proximal end of described sleeve pipe ontology；
Connection flexible pipe, one end are connect with the other end of described sleeve pipe seat；
The back seat of inner hollow is connect with the other end of the connection flexible pipe, and the end of the back seat is equipped with indent
Stop block storage tank, 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
It is connected by connection flexible pipe between tube socket and back seat, the effect of connection flexible pipe is：On the one hand to connector sleeve tube socket and back seat；
On the other hand, the setting of connection flexible pipe closes connection it is also possible that the tool holders such as haemostatic clamp may be used in medical staff when needed
The flow path of hose.
Further, the connection flexible pipe is blood compatibility hose.When blood vessel is connected on back seat, blood phase
The use of capacitive hose can reduce the influence to being embedded to the sleeve body in blood vessel.
Further, the connection flexible pipe is equipped with the clamping element for cutting off flow path in connection flexible pipe.The clamping element
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 of conflicting or conflict occurs, can mutually it be freely combined to form a variety of different technical solutions.
Puncture needle protection device described in the utility model, compact structure is compact, and component is 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.
Trochar described in the utility model when in use, when complete puncture puncture needle extracted from sleeve body
When, puncture needle can be blocked in the casing for puncturing needle protection device, to prevent that needle point from piercing out again and to medical staff or
Patient causes to damage.
Puncture needle protection device and trochar described in the utility model can be used for intravenous drip, blood transfusion and haemodialysis
It is easy-to-use etc. a variety of therapeutic process, there is very strong applicability.
Description of the drawings
Fig. 1 shows the dimensional structure diagram described in the utility model for puncturing needle protection device.
Fig. 2 shows the cross-sectional view shown in FIG. 1 for puncturing needle protection device.
Fig. 3 shows a kind of structure of stop block of the puncture needle protection device described in the utility model under embodiment
Schematic diagram.
Fig. 4 shows that a kind of structure of sliding block of the puncture needle protection device described in the utility model under embodiment is shown
It is intended to.
Fig. 5 show it is described in the utility model puncture needle protection device the first station cross-sectional view.
Fig. 6 show it is described in the utility model puncture needle protection device the first station dimensional structure diagram.
Fig. 7 show it is described in the utility model puncture needle protection device second station cross-sectional view.
Fig. 8 show it is described in the utility model puncture needle protection device second station dimensional structure diagram.
Fig. 9 shows a kind of structural schematic diagram of the trochar described in the utility model under embodiment.
Figure 10 shows the separate structure schematic diagram of trochar shown in Fig. 9.
Figure 11 shows a kind of structural representation of sheath assembly of the trochar described in the utility model under embodiment
Figure.
Figure 12 shows structural schematic diagram of the trochar described in the utility model under another embodiment.
Figure 13 shows the separate structure schematic diagram of trochar shown in Figure 12.
Figure 14 shows that the structure of sheath assembly of the trochar described in the utility model under another embodiment is shown
It is intended to.
Specific implementation mode
Come to puncture needle protection device described in the utility model below in conjunction with Figure of description and specific embodiment
It is further described in detail with trochar, but the detailed description does not constitute limitations of the present invention.
Fig. 1 shows the dimensional structure diagram described in the utility model for puncturing needle protection device.
Fig. 2 shows the cross-sectional view shown in FIG. 1 for puncturing needle protection device.
As depicted in figs. 1 and 2, puncture needle protection device described in the utility model includes：Sleeve 11, in the axial direction
On both ends be respectively equipped with first port and second port (i.e. in Fig. 2 it can be seen that upper port and lower port), in sleeve 11
Portion has the first passage P for the perforation being arranged along its axial direction and the second channel of the radial direction setting along sleeve；Only
Block 12 is set in second channel, and the first axis through-hole 121 passed through for puncture needle is offered on stop block, is gone back on stop block
Equipped with the first inclined-plane；Sliding block 13 is set in first passage P, and positioned at the lower section of stop block 12, and sliding block 13 is equipped with first tiltedly
Matched second inclined-plane in face, in addition, being further opened with the second axially extending bore 131 passed through for puncture needle on sliding block 13；Spring 14
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 Fig. 1 and Fig. 2 in sleeve 11,
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 described in the utility model can be with
Include the gasket 15 as stop part, gasket 15 is set to close to the second port of sleeve 11 in first passage P.It is set on gasket 15
There is centre bore, to prevent the puncture needle in first passage P from deviating from via second port.
Fig. 3 shows a kind of structure of stop block of the puncture needle protection device described in the utility model under embodiment
Schematic diagram.
From figure 3, it can be seen that first axis through-hole 121 and the first inclined-plane with 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
The part of 11 outer circumference surface of sleeve.
Fig. 4 shows that a kind of structure of sliding block of the puncture needle protection device described in the utility model under embodiment is shown
It is intended to.
Figure 4, it is seen that sliding block 13 includes slider body 132 and is respectively arranged on two of 132 both 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 storage tank 123 of 12 side of stop block shown in Fig. 3 is also to be led for adaptedly housing
To column 133.
Fig. 5 and Fig. 6 shows puncture described in the utility model in the form of section plan and three-dimensional cutaway view respectively
State of the needle protection device 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, it is described in the utility model
When puncture 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 partly stretch out from sleeve, and its first axis through-hole 121 and 131 centering of the second axially extending bore on sliding block 13, puncture
Needle N is pierced by across the second axially extending bore 131 and first axis through-hole 121 from the first port of sleeve 11, i.e. puncture needle N is complete
Across puncture needle protection device, that is to say, that in this state, puncture needle N is through entire first passage P's.In this shape
Under state, spring 14 is in compressed state, therefore it continues the thrust to the application of sliding block 13 axially upwards, but due to puncture needle
N has passed through first axis through-hole 121 and the second axially extending bore 131, therefore puncture needle N has limited stop block 12 and sliding block 13
Opposite sliding.
Fig. 7 and Fig. 8 shows puncture described in the utility model in the form of section plan and three-dimensional cutaway view respectively
State of the needle protection device 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 dropped into the storage tank 123 of stop block 12, and first axis is logical
Hole 121 and puncture needle N no longer centerings, puncture needle N just can not be across first axis through-hole 121 and from the first of sleeve 11 as a result,
Port is pierced by.
In addition, as shown in Figure 7 and Figure 8, and Fig. 5 and Fig. 6 is combined if necessary, when puncture needle described in the utility model is anti-
When protection unit is equipped with the gasket 15 as stop part, since gasket 15 can block the limiting section X on puncture needle N, so that wearing
Pricker N can not be skidded off from the second open end of 11 lower section of sleeve.As such, under second station state, the needle point of puncture needle N is complete
It is punctured needle protection device covering, medical staff is avoided and patient is damaged.
Fig. 9 shows a kind of structural schematic diagram of the trochar described in the utility model under 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 described in the utility model includes：Puncture needle component
3, sheath assembly 21, and the puncture needle protection device 1 between puncture needle component 3 and sheath assembly 21.It is storing and is wearing
Under thorn-like state, the puncture needle in puncture needle component 3 passes through the sleeve body for puncturing needle protection device 1 and being inserted in sheath assembly 21
It is interior.
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 makes puncture needle component more easily hold,
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 films of breathing freely.In some embodiments, needle stand 32
The one end being connect 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, in certain embodiments, can also have limiting section X as shown in Figure 5, the limiting section on puncture needle 31
Can be that a flat limiting section or the limiting section that expands, the Outside Dimensions of the limiting section are set to larger than Fig. 2 institutes
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.
Figure 11 shows further a kind of knot of sheath assembly of the trochar described in the utility model under embodiment
Structure schematic diagram.
As shown in figure 11, in this embodiment, sheath assembly 21 is in Y types, so that it is with puncture needle component and wears
Pricker protective device may be constructed a kind of Y molded cannula needles 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, 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 further opened with wall port 216 on the side wall of casing seat 211.Its
In, the first open end is fixedly connected with sleeve body 212 by way of be bonded or rivet, 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 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 Figure 11 it can also be seen that sleeve body 212 close to its distal end side wall on be further opened with areole
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 improve blood or
Other fluids pass in and out the flow of sleeve body 212.It is reduced due to sleeve body 212 in the blood vessels in addition, areole H is additionally aided
The harmful 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 tapers into.This structure can reduce the resistance that trochar is subject in piercing 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 set on 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, and to both play the role of preventing overflow, puncture needle are also enable 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,
Can be automatic anti-connector or other functional three-way connections of backflowing.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, operating personnel 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 storage tank 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 across 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, limited only
The opposite sliding with sliding block 13 of block 12.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 122 and second inclined-plane 134 of matched first inclined-plane
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 be just pierced by across first axis through-hole 121 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 storage tank 214
Go out, to disconnect the connection for puncturing needle protection device 1 and sheath assembly 21.In addition, during removing needle, gasket 15 can be blocked and be worn
The limiting section X on draw point 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 described in the utility model 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 described in the utility model includes：Puncture needle component
3, sheath assembly 22, and the puncture needle protection device 1 between puncture needle component 3 and sheath assembly 22.It is storing and is wearing
Under thorn-like state, the puncture needle in puncture needle component 3 passes through the sleeve body for puncturing needle protection device 1 and being inserted in sheath assembly 22
It is interior.
The trochar in the embodiment, which is can be seen that, from Figure 12 and Figure 13 is different from Fig. 9 and Y molded cannulas shown in Fig. 10
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, to 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 are fluid-tight PTFE films of breathing freely.In some embodiments, one end that needle stand 34 is connect with venting plug 33 can be equipped with
Closed, Jin Erfang may be implemented so that when venting plug stoppers the step in needle stand 34 in the step being adapted to venting plug 33
Hemostatic Oral Liquid outflows.
In addition, in some embodiments, can also have limiting section X as shown in Figure 5, the limit on puncture needle 31
Portion can be that 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 sheath assembly of the trochar described in the utility model under another embodiment
Structural 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, one end are fixedly connected with sleeve body 222 by way of be bonded or rivet,
Its other end is connect with one end of connection flexible pipe 223；The back seat 224 of inner hollow is connect with the other end of connection flexible pipe 223, after
The end of seat 224 is equipped with stop block storage tank 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, being also provided in connection flexible pipe 223 for cutting off flow path in connection flexible pipe
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 Figure 14 it can also be seen that sleeve body 222 close to its distal end side wall on be further opened with areole
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 improve blood or
Other fluids pass in and out the flow of sleeve body 222.It is reduced due to sleeve body 222 in the blood vessels in addition, areole H is additionally aided
The harmful 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 for sleeve body 222 tapers into.This structure can reduce the resistance that trochar is subject in piercing 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 storage tank 225 of 224 end of back seat, connects with sheath assembly 22 so that puncturing needle protection device 1
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
Through-hole 121 and 131 centering of the second axially extending bore on 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,
It has limited the opposite sliding with sliding block 13 of stop block 12.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 122 and second inclined-plane 134 of matched first inclined-plane 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, as a result, puncture needle 31 can not be just pierced by from the first port of sleeve 11 across first axis through-hole 121.
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 being extracted in ontology, puncture needle can be blocked in the casing for puncturing needle protection device, right to prevent that needle point from piercing out again
Medical staff or patient cause to damage.
The claimed technical solution of the utility model is not limited to above-mentioned each specific implementation mode.In addition, being retouched above
Each technical characteristic stated can also be combined with each other in the case where conflicting or conflict does not occur.Those skilled in the art
If all deformations for directly exporting or associating from content disclosed by the utility model, should all belong to the protection of the utility model
Range.
Claims (25)
1. a kind of puncture needle protection device, which is characterized in that including：
Sleeve, both ends in the axial direction are respectively equipped with first port and second port；The sleeve inner has along it
Axial direction setting perforation first passage, and along sleeve radial direction be arranged second channel, the first passage
For housing 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 further opened 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 are pierced by across the second axially extending bore and first axis through-hole from first port；When puncture needle is bounced back to from
When the position of one axially extending bore abjection, the sliding block slides under the axial thrust effect of elastic component in first passage, 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 to relative to stop block under it
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：It slider body and is set to
The guide post of the slider body both 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 house the storage tank 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, which is characterized in that including：
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 is inserted in across the puncture needle protection device in described sleeve pipe ontology.
11. trochar as claimed in claim 10, which is characterized in that the puncture needle component further includes：
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
Internal diameter of the degree more than 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 tapering into.
18. the trochar as described in any one of claim 10-17, which is characterized in that described sleeve pipe component further includes：
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 storage tank 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 between the second open end and wall port in casing seat.
22. trochar as claimed in claim 21, which is characterized in that the anti-overflow plug is in inclined-plane close to one end of wall port
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 includes：
The casing seat of inner hollow, one end are connect with the proximal end of described sleeve pipe ontology；
Connection flexible pipe, one end are connect with the other end of described sleeve pipe seat；
The back seat of inner hollow is connect with the other end of the connection flexible pipe, and the end of the back seat is equipped with the backstop of indent
Block storage tank, 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 flexible pipe is blood compatibility hose.
25. trochar as claimed in claim 23, which is characterized in that the connection flexible pipe is equipped with for cutting off connection flexible pipe
The clamping element of interior flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720690498.8U CN207856028U (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 |
|---|---|---|---|
| CN201720690498.8U CN207856028U (en) | 2017-06-14 | 2017-06-14 | A kind of puncture needle protection device and trochar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207856028U true CN207856028U (en) | 2018-09-14 |
Family
ID=63473777
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720690498.8U Expired - Fee Related CN207856028U (en) | 2017-06-14 | 2017-06-14 | A kind of puncture needle protection device and trochar |
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| Country | Link |
|---|---|
| CN (1) | CN207856028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078238A (en) * | 2017-06-14 | 2018-12-25 | 美敦力公司 | A kind of puncture needle protection device and trochar |
-
2017
- 2017-06-14 CN CN201720690498.8U patent/CN207856028U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078238A (en) * | 2017-06-14 | 2018-12-25 | 美敦力公司 | A kind of puncture needle protection device and trochar |
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