CN107669303A - Wire cutter - Google Patents
Wire cutter Download PDFInfo
- Publication number
- CN107669303A CN107669303A CN201710922804.0A CN201710922804A CN107669303A CN 107669303 A CN107669303 A CN 107669303A CN 201710922804 A CN201710922804 A CN 201710922804A CN 107669303 A CN107669303 A CN 107669303A
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- Prior art keywords
- tube
- displacement
- hard tube
- sawtooth
- face
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- 230000007704 transition Effects 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims description 64
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 description 21
- 238000003825 pressing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 238000002271 resection Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0467—Instruments for cutting sutures
Abstract
The invention provides a kind of wire cutter, and comprising hard tube (1), the hard tube (1) is mainly sequentially connected and formed by pipe shaft portion (11), transition part (12), tube head (13)；Perforation hole is provided with hard tube (1), the perforation hole runs through the proximal end face and distal face of hard tube (1) along hard tube (1) axial direction；Sawtooth (2) is provided with tube head (13)；One or more sawtooth (2) are arranged on outside wall surface or the distal face of tube head (13)；One of side of the sawtooth (2) only in hard tube (1) circumferentially direction can be cut when rotating up；Pipe shaft portion (11), transition part (12), tube head (13) are integrally formed；Or transition part (12) is detachably connected with tube head (13).The present invention can extend into wound separates suture from drainage tube, prevents from involving wound tissue when extracting drainage tube out, and then avoids patient from bearing the risk of severe pain and wound deterioration.
Description
Technical field
The present invention relates to medical instruments field, in particular it relates to a kind of wire cutter.
Background technology
After the completion of the operation of such as Sacral Tumors resection, it usually needs be placed in wound, be layered using drainage tube
Interrupted suture wound, the internal fester of drainage in time, when daily drainage flow is less than certain value, you can drainage tube is taken out from wound
Go out.In practical operation, often occur because doctor is lacking practice and skill or situation about being sewn on drainage tube on wound of slipping up, extracting drainage tube out
When affect wound perimeter tissue, cause greatly pain bitter to patient, or even cause the severe exacerbation of wound.In the prior art and no-trump
The instrument or method that suture is cut off from drainage tube, drainage tube can only be extracted by force, and then produce above-mentioned series of negative effect
Fruit.
The content of the invention
For in the prior art the defects of, it is an object of the invention to provide a kind of wire cutter.
According to wire cutter provided by the invention, comprising hard tube, the hard tube includes pipe shaft portion, transition part and tube head；
Pipe shaft portion, transition part, tube head are sequentially connected；
Perforation hole is provided with hard tube, the perforation hole runs through the proximal end face and distal face of hard tube along hard tube axial direction；
Sawtooth is provided with tube head；One or more sawtooth are arranged in the outside wall surface or distal face of tube head；Sawtooth
One of side only in hard tube circumferentially direction can be cut when rotating up；
Pipe shaft portion, transition part, tube head are integrally formed；Or
Transition part is detachably connected with tube head.
Preferably, it is gradually reduced along near-end to distal direction, transition part external diameter；
Pipe shaft portion, transition part, tube head are connected smoothly successively；
In the projection of hard tube axial direction, sawtooth external diameter is not more than pipe shaft portion external diameter.
Preferably, the sawtooth includes first flank of tooth and second flank of tooth, first flank of tooth and the second flank of tooth sharp transitions；
Along tube head circumferential direction, the first flank of tooth bearing of trend and tube head outside wall surface are tangent, and first flank of tooth is along straight line side
To or arc direction extension.
Preferably, also it is connected comprising flexible pipe, the flexible pipe with the near-end of hard tube；
Flexible pipe is connected with hard tube by way of socket or gluing.
Preferably, in axial direction can also be extend into comprising expanding structure, expanding structure in perforation hole；
Expanding structure includes dilator and sleeve pipe；The dilator includes holding rod and multiple struts；
Dilator can move in the axially extending bore of sleeve pipe, realize receiving state and open configuration both states it
Between conversion：
Under the receiving state, strut is located in dilator sleeve pipe, and strut distal end is mutually drawn close；
Under the open configuration, strut is extend out to outside dilator sleeve pipe, and strut distal end is located remotely from each other.
Preferably, holding rod is connected with strut by torsion spring or elastic hinge；Or
Strut is made up of elastomeric material.
Preferably, it is provided with expansion link on the hard tube.
Preferably, the expansion link includes displacement piece, flipping block and upset elastic threads；
The first displacement piece and second displacement part, the first displacement piece and second displacement part Central Symmetry are included in multiple displacement pieces
Arrangement；The first displacement piece two sides relative with second displacement part is step surface；
Flipping block shape of cross section is rectangle；Multiple flipping blocks are arranged between the first displacement piece and second displacement part,
Connected between multiple flipping blocks by overturning elastic threads；
Elastic component is provided between first displacement piece and second displacement part, elastic component is in extended state.
Preferably, also it is socketed in comprising sleeve, sleeve on expansion link；Expansion link is entirely located in sleeve inner；The side of sleeve
Wall is shiny surface；
The elastic component includes drawing elastic threads, and drawing elastic threads are set through flipping block；Or drawing elastic threads are turned over
Switch block is separated into two sections；
The both ends of the displacement piece of step along its length form thick side and thin side respectively, and the end face of thick side is formed
Pull face；
Pull rope is provided with along in multiple outermost displacement pieces of displacement piece orientation；
It is connected positioned at the pull face of the same side with pull rope with same one end of hard tube；
Be additionally provided with through hole on first displacement piece and second displacement part, fastener through the through hole by the first displacement piece with
Second displacement part is fastenedly connected.
Compared with prior art, the present invention has following beneficial effect：
1st, the present invention can extend into wound and separate suture from drainage tube, prevent from leading when extracting drainage tube out
Pull to wound and organize, so avoid patient bear severe pain and wound deterioration risk.
2nd, present invention offer expanding structure contacts simultaneously circumferential spacing with drainage tube, prevents that drainage tube turns with suture in secant
It is dynamic, increase secant efficiency.
3rd, the design of expansion link enables the length of hard tube to adjust in the present invention, adapts to the operation of different depth wound and needs
Will.
4th, tangentially extending broached-tooth design is used in the present invention, can separates seam when the tangentially extending direction of sawtooth rotates
Line, when the tangentially extending opposite direction of sawtooth rotates, and can reduces the destruction to wound.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is diagrammatic cross-section when secant of the present invention operates；
Fig. 2 is top view when secant of the present invention operates；
Diagrammatic cross-section when Fig. 3 is the secant of the present invention operation equipped with expanding structure；
Fig. 4 is expanding structure structural representation under receiving state；
Fig. 5 is expanding structure structural representation under open configuration；
Fig. 6 is the hard tube structural representation with expansion link；
Fig. 7 is the non-stretched structural representation of expansion link；
Fig. 8 is expansion rod part stretching structure schematic diagram；
Structural representation when Fig. 9 is completely stretched for expansion link.
Shown in figure：
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " top ", " bottom ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position
Relation is put, it is of the invention necessary with simplified description, rather than the device or element of instruction or hint meaning to be for only for ease of description
With specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
As shown in figure 1, in embodiment, wire cutter provided by the invention includes hard tube 1, and hard tube 1 is mainly by pipe shaft portion 11, mistake
Cross portion 12, tube head 13 is connected smoothly to be formed successively, pipe shaft portion 11, transition part 12, tube head 13 are integrally formed, hard tube 1
Axially extending bore is internally provided with, the axially extending bore forms the perforation hole for being socketed drainage tube 51.It is provided with tube head 13
Sawtooth 2, as shown in Fig. 2 multiple sawtooth 2 are evenly arranged in the circumferential direction of tube head 13.Sawtooth 2 is only in hard tube 1 along week
One of side into direction can be cut when rotating up, for example, sawtooth 2 only has cutting edge in the one direction,
With being blunt mouth in one circumferential direction in opposite direction；During use, hard tube 1 is enclosed on along the bearing of trend of drainage tube 51
The outside of drainage tube 51, hard tube 1 is rotated during being stretched into patient wound inside, sawtooth 2 will be connected on drainage tube 51
Suture 52 separate, so that drainage tube 51 be separated with wound perimeter tissue.In preference, the tube head 13 of sawtooth 2 is provided with
It can also be what is be detachably connected using such as buckle or screw thread between transition part 12, the advantage of the structure is：By
Can be harder in the cleaning of sawtooth 2 after use, it is easy to cause to intersect in surgical procedure to feel failing to cleaning up
Dye, and transition part 12 and the surface of pipe shaft portion 11 are smoother, are reused after easy cleaning and sterilizing.Preferably, sawtooth 2 can be with
It is the function that secant can be equally played on the distal face of tube head 13, but during wound depths is extend into,
It is possible to the driving direction of hard tube 1 occur not to causing the overall situation about submerging in patient's muscle of sawtooth 2.Preferably, sawtooth 2 counts
Amount can moreover be only one, the injury to patient can be reduced during use, but secant efficiency can accordingly lower.Further
Preferably, hard tube 1, which can also be, penetrates inside drainage tube 51, and sawtooth 2 is sawed-off by suture 52 inside drainage tube 51, greatly drop
The operation difficulty and degree of danger of low operation, but the structural disadvantages are it is also obvious that for connecting drainage tube 51 but passing through
The suture 52 of poling wall, even press close to the suture 52 of the inwall of drainage tube 51, can not effectively be cut off.In preference, firmly
The near-end of pipe 1 is additionally provided with flexible pipe 3, and flexible pipe 3 is connected with hard tube 1 by way of socket or gluing, and the purpose for setting flexible pipe 3 is
The shape of drainage tube 51 is adapted to, when extracting drainage tube 51, can also continue to carry out water conservancy diversion to remnants fester.Preferably, it is suitable
Hour hands rotate hard tube 1 to enter in wound, and when rotating counterclockwise hard tube 1, sawtooth 2 carries out cutting action；It is, of course, preferable to ground,
Can also enter wound counterclockwise, cut suture 52 clockwise, but the design less meets popular operating habit.
One end where defining pipe shaft portion 11 is near-end, is gradually reduced along near-end to distal direction, the external diameter of transition part 12, firmly
In the projection of the axial direction of pipe 1, the external diameter of sawtooth 2 be not more than the external diameter of pipe shaft portion 11, when such hard tube 1 is located at wound inside, mainly by
The smooth outer wall of pipe shaft portion 11 contacts with wound perimeter tissue, prevents the sharp portion shouting pain patient of sawtooth 2.As shown in Fig. 2 sawtooth
2 include first flank of tooth 21 and second flank of tooth 22, first flank of tooth 21 and the sharp transitions of second flank of tooth 22, for cutting off suture 52；Edge
The circumferential direction of tube head 13, the bearing of trend of first flank of tooth 21 and the outside wall surface of tube head 13 are tangent, and first flank of tooth 21 is linearly
Or arc direction extension, when so rotating in the counterclockwise direction, injury of the sawtooth 2 to perienchyma is reduced, in side clockwise
When being rotated up, then suture 52 can be cut off.Along along the axial direction of tube head 13, sawtooth 2 is remote only slight beyond tube head 13
End face, be convenient for secant operation, at the same can also prevent driving direction not pair when sawtooth 2 be pierced into wound perimeter muscle
It is deep.
As shown in figure 3, being also equipped with expanding structure 4 inside hard tube 1, expanding structure 4 can in axial direction extend into poling
Kong Zhong, in use, the outside of hard tube 1, expanding structure 4 difference displacement drainage tube 51, inner side.Expanding structure 4 includes dilator 41
With sleeve pipe 42；The dilator 41 includes holding rod 411 and multiple struts 412, and dilator 41 can lead in the axial direction of sleeve pipe 42
Moved in hole, realize the conversion between receiving state and open configuration both states：As shown in figure 4, the receiving state
Under, strut 412 is located in the sleeve pipe 42 of dilator 41, and the distal end of strut 412 is mutually drawn close；As shown in figure 5, under the open configuration,
Strut 412 is extend out to outside the sleeve pipe 42 of dilator 41, and the distal end of strut 412 is located remotely from each other.To realize dilator 41 in receiving state
With the conversion between open configuration both states, holding rod 411 is connected with strut 412 by torsion spring 413 or elastic hinge.It is real
Apply in example, two struts 412 be present, two struts 412 are collectively forming Y-shaped structure, strut 412 and holding rod with holding rod 411
411 are connected by torsion spring 413, and when promoting holding rod 411 forward, strut 412 is extend out to outside sleeve pipe 42, is returned in torsion spring 413
Under elastic force effect, the distal end of two struts 412 is separated from each other, and forms open configuration；When pulling back holding rod 411, strut
412 return in sleeve pipe 42, are easy to take out from mozzle with the entirety of sleeve pipe 42.The purpose for setting expanding structure 4 is, works as sawtooth
During 2 cutting suture 52, hard tube 1 may be driven while rotated, while bringing pain to patient, also reduce secant efficiency, this
When expanding structure 4 is extend into drainage tube 51 after, circumferentially fixed effect can be played to drainage tube 51, and then increase sawtooth
2 secant efficiency.Preferably, strut 412 is inherently made up of elastomeric material, after sleeve pipe 42 are stretched out, opens, rises from trend surrounding
To circumferentially fixed effect.Preferably, the quantity of strut 412 can be three or more, form claw type, circumferentially fixed more firm
Lean on, but difficulty of processing also can accordingly increase.
As shown in fig. 6, expansion link 6 is additionally provided with hard tube 1, it is preferable that expansion link 6 is located in pipe shaft portion 11.Such as Fig. 7
Shown in Fig. 9, expansion link includes displacement piece 61 and flipping block 62, and the first displacement piece 611 and second is included in multiple displacement pieces 61
Displacement piece 612, the first displacement piece 611 are centrosymmetrically arranged with second displacement part 612, and multiple flipping blocks 62 are arranged on the first displacement
Between part 611 and second displacement part 612, connected between multiple flipping blocks 62 by overturning elastic threads.First displacement piece 611
Elastic component is also equipped between second displacement part 612, elastic component keeps drawing the first displacement piece 611 with second displacement part 612
Close trend, in embodiment, the elastic component includes drawing elastic threads 631, the upset therethrough of drawing elastic threads 631
Block 62 is set, or is separated into two sections by the flipping block 62.As shown in Figure 7 to 9, the first displacement piece 611 and second displacement part
612 two relative faces are step surface, along the thick side 6150 of the first displacement piece 611 to the thin direction of side 6160, step surface water
Flat part sequentially forms the first pressing face 61031, the second pressing face 61032, the 3rd pressing face 61033, the 4th pressing face 61034
This four pressing faces, step surface vertical portion, which sequentially forms the first resistance, goes back to face 61021, second and hinders go back to face the 61022, the 3rd and hinder go back to face
61023 these three hinder go back to face；The end face of the thick side 6150 of displacement piece 61 forms pull face 6101, pull face 6101 be used for it is hard
Pipe 1 is connected.The shape of cross section of flipping block 62 is rectangle, the length of rectangular cross section, width；The length of flipping block 62
Direction extended surface forms long plane 6201, and the width extended surface of flipping block 62 forms wide plane 6202.Define wide plane
6202 it is parallel with pressing face when, flipping block 62 is in standing state；When long plane 6201 is parallel with pressing face, flipping block 62 is in
Fall down state.The first flipping block 621, the second flipping block 622, the upset of the 3rd flipping block the 623, the 4th are included in multiple flipping blocks 62
The flipping block 62 of these four specifications of block 624, along the center in the arrangement of flipping block 62 path to the direction at both ends, the first flipping block
621st, the second flipping block 622, the 3rd flipping block 623, the 4th flipping block 624 are sequentially arranged, and drawing elastic threads 631 are connected to first
On flipping block 621.Lead to successively between first flipping block 621, the second flipping block 622, the 3rd flipping block 623, the 4th flipping block 624
Cross the first upset upset upset of elastic threads the 6322, the 3rd elastic threads 6323 of elastic threads 6321, second to connect, the 4th flipping block 624
Outside be also associated with pull rope 633, pull rope 633 be used for be connected with hard tube 1, positioned at the pull face 6101 of the same side with pull
Rope 633 is connected to same one end of hard tube 1 simultaneously.In embodiment, the first upset upset of elastic threads 6321, second elastic threads 6322,
The coefficient of elasticity of 3rd upset elastic threads 6323 reduces successively, in addition, upset elastic threads are connected to the long plane 6201 of flipping block
On, but and disconnected long plane 6201 geometric center, but handed over along the vertical direction when flipping block 62 is in standing state
Mistake distribution, it is so convenient when pulling pull rope 633, realize and overturn successively by the flipping block 62 at both ends to center.Preferably, exist
In the two wide plane 6202 of one flipping block 62, one of those wide plane 6202 is connected to edge by a upset elastic threads
The wide plane 6202 of another adjacent flipping block 62, another wide plane 6202 therein on the arrangement path direction of flipping block 62
The wide position of adjacent another flipping block 62 along the arrangement path direction of flipping block 62 is connected to by another upset elastic threads
Face 6202, or, another wide plane 6202 therein is by pulling the connection hard tube 1 of rope 633.
The operation principle of expansion link 6 is：Under original state, the structure of expansion link 6 is as shown in fig. 7, flipping block 62 is in standing
Vertical state, in the presence of elastic threads are overturn, flipping block 62 is arranged on the first pressing face 61031 successively, drawing elastic threads 631
In extended state, and in the presence of screen resilience, the wide plane 6202 of the first pressing face 61031 and the 4th flipping block 624
Fitting, now distance is most short between the pull face 6102 of two displacement pieces 61；Pull pull face 6101 and pull rope 633, the 4th
Flipping block 624 rotates, and is changed into state of falling down from standing state, and the maximum height of flipping block 62 reduces, in drawing elasticity
Restrict under 631 rebound effects, mutually drawn close between two displacement pieces 61, if as shown in figure 8, now stopping drag pull face 6101
With pull rope 633, the one wide plane 6202 of the 4th flipping block 624 hinders go back to face 61021 with first and contacted, and prevents the first upset
Block 621 recovers in the presence of the 3rd upset elastic threads 6323 to standing state, the first displacement piece 611 and second displacement part 612
Under the support of the 4th flipping block 624 and/or the 3rd flipping block 623, and the pull effect of drawing elastic threads 631, keep high
Spend the stabilization in direction；Pull face 6101 and pull rope 633 are pulled on, the 3rd flipping block 623, the second flipping block 622, first turn over
Switch block 621 will be overturn successively, and distance becomes larger between the pull face 6102 of two displacement pieces 61, as shown in figure 9, this
When, the 4th flipping block 624, the 3rd flipping block 623, the second flipping block 622 hinder go back to face 61023, second with the 3rd and hinder go back to face respectively
61022nd, first hinders back the structure of face 61021, and two displacement pieces 61 are by any of four kinds of flipping blocks 62 or appoint a variety of upsets
The support of block 62, and the pull effect of drawing elastic threads 631, the final stability for keeping expansion link 6 overall.When needing to shorten
Between the pull face 6102 of two displacement pieces 61 apart from when, only two pieces of displacement pieces 61 need to mutually be pulled open away from.
In preference, the specification species of flipping block 62 is not limited to above-mentioned four kinds, adjustment length that can be according to demand
Be adjusted, the quantity of flipping block 62 also changes accordingly, but need to ensure along the orientation of flipping block 62 by from centre position to
When end positions extend, dimensions changes from small to large between multiple flipping blocks 62, specifically, when flipping block 62 is all in station
During vertical state, from centre position to end positions direction, the height between multiple flipping blocks 62 changes from small to large；Accordingly
Ground, more upset elastic threads between elasticity change from big to small, it is adjacent two upset elastic threads above-below direction position height be present
Change；It is further preferred that flipping block 62 can also be asymmetric in the lateral direction, but tune occurs when in use
The phenomenon that section not enough smoothly links up.Preferably, flipping block 62 can also not be one-to-one relation with hindering go back to face, that is,
Say during expansion link 6 is pulled, exist and do not contacted directly with hindering go back to face when flipping block 62 is in state, and
It is to be contacted by an adjacent flipping block 62 with hindering go back to face, to reduce the difficulty of processing of displacement piece 61, but this structure is present
The shortcomings that axial restraint is not sufficiently stable.Preferably, the elasticity for overturning elastic threads can also be consistent, and installation site can also be
In the geometric center position of flipping block 62, assembling is more prone to, but the upset of flipping block 62 can be caused to become chaotic.
Preferably, through hole can also be set in displacement piece 61, for inserting fastener by the first displacement piece 611 and second
Move part 612 to be fixed, further the motion of the expansion link 6 of limitation regulation in place.Preferably, it is additionally provided with outside expansion link 6
Sleeve 64, sleeve 64 are socketed on expansion link 6, and expansion link 6 is entirely located in inside sleeve 64；The side wall of sleeve 64 is smooth
Face.Sleeve 64 is divided into two valves along vertical section, interior by being wrapped in expansion link 6 after buckle or fastener connection, prevents expansion link 6
On sharp parts perienchyma is damaged.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the case where not conflicting, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (9)
1. a kind of wire cutter, it is characterised in that comprising hard tube (1), the hard tube (1) includes pipe shaft portion (11), transition part (12)
And tube head (13)；Pipe shaft portion (11), transition part (12), tube head (13) are sequentially connected；
Be provided with perforation hole on hard tube (1), the perforation hole along hard tube (1) axial direction through hard tube (1) proximal end face with it is remote
End face；
Sawtooth (2) is provided with tube head (13)；One or more sawtooth (2) are arranged on outside wall surface or the distal end of tube head (13)
On face；One of side of the sawtooth (2) only in hard tube (1) circumferentially direction can be cut when rotating up；
Pipe shaft portion (11), transition part (12), tube head (13) are integrally formed；Or
Transition part (12) is detachably connected with tube head (13).
2. wire cutter according to claim 1, it is characterised in that along near-end to distal direction, transition part (12) external diameter by
It is decrescence small；
Pipe shaft portion (11), transition part (12), tube head (13) are connected smoothly successively；
In the projection of hard tube (1) axial direction, sawtooth (2) external diameter is not more than pipe shaft portion (11) external diameter.
3. wire cutter according to claim 2, it is characterised in that the sawtooth (2) includes first flank of tooth (21) and second
The flank of tooth (22), first flank of tooth (21) and second flank of tooth (22) sharp transitions；
Along tube head (13) circumferential direction, first flank of tooth (21) bearing of trend and tube head (13) outside wall surface are tangent, first flank of tooth
(21) linearly or arc direction extension.
4. wire cutter according to claim 1, it is characterised in that also comprising flexible pipe (3), the flexible pipe (3) and hard tube (1)
Near-end be connected；
Flexible pipe (3) is connected with hard tube (1) by way of socket or gluing.
5. wire cutter according to claim 1, it is characterised in that also comprising expanding structure (4), expanding structure (4) can
In axial direction it extend into perforation hole；
Expanding structure (4) includes dilator (41) and sleeve pipe (42)；The dilator (41) includes holding rod (411) and multiple supports
Bar (412)；
Dilator (41) can move in the axially extending bore of sleeve pipe (42), realize in receiving state and both shapes of open configuration
Conversion between state：
Under the receiving state, strut (412) is located in dilator (41) sleeve pipe (42), and strut (412) distal end is mutually drawn close；
Under the open configuration, strut (412) is extend out to outside dilator (41) sleeve pipe (42), and strut (412) distal end is mutually remote
From.
6. wire cutter according to claim 5, it is characterised in that holding rod (411) passes through torsion spring with strut (412)
(413) or elastic hinge connects；Or
Strut (412) is made up of elastomeric material.
7. wire cutter according to claim 1, it is characterised in that be provided with expansion link (6) on the hard tube (1).
8. wire cutter according to claim 7, it is characterised in that the expansion link (6) includes displacement piece (61), flipping block
(62) and upset elastic threads；
Comprising the first displacement piece (611) and second displacement part (612) in multiple displacement pieces (61), the first displacement piece (611) and the
Two displacement pieces (612) are centrosymmetrically arranged；First displacement piece (611) and the relative two sides of second displacement part (612) are step surface；
Flipping block (62) shape of cross section is rectangle；Multiple flipping blocks (62) are arranged on the first displacement piece (611) and second
Move between part (612), connected between multiple flipping blocks (62) by overturning elastic threads；
Elastic component is provided between first displacement piece (611) and second displacement part (612), elastic component is in extended state.
9. wire cutter according to claim 8, it is characterised in that be also socketed in flexible comprising sleeve (64), sleeve (64)
On bar (6)；It is internal that expansion link (6) is entirely located in sleeve (64)；The side wall of sleeve (64) is shiny surface；
The elastic component includes drawing elastic threads (631), and drawing elastic threads (631) are set through flipping block (62)；Or drawing
Elastic threads (631) are reversed block (62) and are separated into two sections；
The both ends of the displacement piece (61) of step along its length form thick side (6150) and thin side (6160), thick side respectively
The end face of (6150) is held to form pull face (6101)；
Pull rope (633) is provided with along in the outermost displacement piece of multiple displacement pieces (61) orientation (61)；
It is connected positioned at the pull face (6101) of the same side with the same one end of pull rope (633) with hard tube (1)；
First displacement piece (611) is with being additionally provided with through hole on second displacement part (612), fastener is through the through hole by first
Part (611) is moved to be fastenedly connected with second displacement part (612).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710922804.0A CN107669303B (en) | 2017-09-30 | 2017-09-30 | Thread cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710922804.0A CN107669303B (en) | 2017-09-30 | 2017-09-30 | Thread cutting device |
Publications (2)
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| CN107669303A true CN107669303A (en) | 2018-02-09 |
| CN107669303B CN107669303B (en) | 2024-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116019529A (en) * | 2023-03-30 | 2023-04-28 | 杭州启明医疗器械股份有限公司 | Interventional cutting device |
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| US20020087178A1 (en) * | 2000-08-25 | 2002-07-04 | Nobles Anthony A. | Suture cutter |
| CN2605822Y (en) * | 2002-06-21 | 2004-03-10 | 张力 | Adjustable fixer for wound suture |
| US20060004409A1 (en) * | 2004-05-14 | 2006-01-05 | Nobis Rudolph H | Devices for locking and/or cutting a suture |
| CN101048188A (en) * | 2004-10-25 | 2007-10-03 | 科洛普拉斯特公司 | Male telescope catheter |
| CN204484208U (en) * | 2015-02-16 | 2015-07-22 | 申勇 | A kind of drainage tube stitching thread cutter |
| CN106725746A (en) * | 2017-01-20 | 2017-05-31 | 重庆西山科技股份有限公司 | Medical cutter sweep |
| CN208625776U (en) * | 2017-09-30 | 2019-03-22 | 中国人民解放军第二军医大学第二附属医院 | Wire cutter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20020087178A1 (en) * | 2000-08-25 | 2002-07-04 | Nobles Anthony A. | Suture cutter |
| CN2605822Y (en) * | 2002-06-21 | 2004-03-10 | 张力 | Adjustable fixer for wound suture |
| US20060004409A1 (en) * | 2004-05-14 | 2006-01-05 | Nobis Rudolph H | Devices for locking and/or cutting a suture |
| CN101048188A (en) * | 2004-10-25 | 2007-10-03 | 科洛普拉斯特公司 | Male telescope catheter |
| CN204484208U (en) * | 2015-02-16 | 2015-07-22 | 申勇 | A kind of drainage tube stitching thread cutter |
| CN106725746A (en) * | 2017-01-20 | 2017-05-31 | 重庆西山科技股份有限公司 | Medical cutter sweep |
| CN208625776U (en) * | 2017-09-30 | 2019-03-22 | 中国人民解放军第二军医大学第二附属医院 | Wire cutter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116019529A (en) * | 2023-03-30 | 2023-04-28 | 杭州启明医疗器械股份有限公司 | Interventional cutting device |
| CN116019529B (en) * | 2023-03-30 | 2023-07-21 | 杭州启明医疗器械股份有限公司 | Interventional cutting device |
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| Publication number | Publication date |
|---|---|
| CN107669303B (en) | 2024-04-16 |
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