CN109984812A - A kind of centreless puncture outfit - Google Patents
A kind of centreless puncture outfit Download PDFInfo
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- CN109984812A CN109984812A CN201711498349.2A CN201711498349A CN109984812A CN 109984812 A CN109984812 A CN 109984812A CN 201711498349 A CN201711498349 A CN 201711498349A CN 109984812 A CN109984812 A CN 109984812A
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- Prior art keywords
- puncture
- component
- protective shell
- annular sleeve
- centreless
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
-
- 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
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of centreless puncture outfits; including sheath assembly and puncture body component; the at least part for puncturing body component is fixedly connected with sheath assembly; puncturing body component includes puncture component and protective shell; puncture component includes puncture tip; protective shell is elastic material, and when original state, protective shell covers puncture tip；Protective shell can generate elastic deformation or restPose, to allow puncture tip to expose from the bottom of protective shell or be covered by protective shell.Centreless puncture outfit in the present invention is easy to use, has both saved the preparation cost of entire puncture outfit, also saves the packing cost of puncture outfit, meanwhile, puncture the also whole operational safety for improving centreless of the present invention and puncturing of design of body component.
Description
Technical field
The present invention relates to a kind of surgical instruments to belong to area of medical devices more particularly to a kind of centreless puncture outfit.
Background technique
Puncture outfit has very big usage amount as essential surgical instrument in various Minimally Invasive Surgeries.Tradition is worn
Piercing device includes puncturing core bar, puncture cannula and seal assembly, puncture cannula and seal assembly be collectively formed for puncture core bar, other
Surgical instrument and to the channel of abdominal cavity of patients's aeration；Seal assembly is arranged in puncture cannula, is injected into abdominal cavity for avoiding
Gas leak out, guarantee stable pneumoperitoneum, so as to being normally carried out for operation, puncture core bar and be inserted into via seal assembly and is worn
It pierces in casing, is punctured for being realized to abdominal cavity of patients, one end of puncture cannula is driven to enter inside abdominal cavity of patients.
During specific operation, doctor is general first to scratch a small notch in the abdomen of patient, then will puncture core bar
Top alignment small notch reciprocating rotation while move down, and one end of puncture cannula is driven to enter the intraperitoneal of patient
Portion.It completes after puncturing, core bar will be punctured and extracted from puncture cannula, other formality instruments can be from the channel that puncture cannula is formed
Disengaging.
Due to the presence of puncture core bar, leads to the rising of puncture outfit manufacture, packet turn and transportation cost, punctures easy pair of core bar
Internal organs cause to damage, and puncture core bar and are dropped using rear, cause to waste.
Based on the above situation, on the basis of guaranteeing puncture outfit puncture resistance, simplify structure, reduce cost, improve performance
It is the main improvement direction of existing puncture outfit
Summary of the invention
In view of the deficiencies of the prior art, the present invention is intended to provide a kind of centreless puncture outfit, solves and puncture in the prior art
Device cost of manufacture and packing cost are high, while there are problems that certain security risk in puncture procedure.
The invention is realized by the following technical scheme: a kind of centreless puncture outfit, including sheath assembly and puncture body component, institute
At least part for stating puncture body component is fixedly connected with described sleeve pipe component, and the puncture body component includes puncture component and protection
Shell, the puncture component include puncture tip, and the protective shell is elastic material, when original state, described in the protective shell covering
Puncture tip；The protective shell can generate elastic deformation or restPose, to allow the puncture tip from the protection
Expose or covered by the protective shell in the bottom of shell.
Preferably, described sleeve pipe component includes first end and second end, is fixedly installed in the second end of described sleeve pipe component
Have and puncture body component, the puncture tip of the puncture component protrudes from the end face of described sleeve pipe component second end, the protective shell packet
Upper body and lower case are included, the upper body is directly or indirectly fixedly connected with described sleeve pipe component, the lower part
Shell covers the puncture tip of the puncture component.
Further, the puncture body component further includes annular sleeve, and the puncture component is fixed at the annular sleeve
On inner wall, the puncture tip of the puncture component protrudes from the bottom margin of the annular sleeve, and the protective shell is arranged in the ring
On the outer wall of shape set and position is corresponding with the puncture component, and the annular sleeve is sleeved on the second end of described sleeve pipe component
On.
Preferably, pilot hole is offered in the annular sleeve, locating piece is provided on the puncture component, and the locating piece is embedding
Enter and is arranged in the pilot hole.
Preferably, the connection type of the protective shell and the annular sleeve is any in bonding, welding, riveting or clamping
It is a kind of.
Preferably, described sleeve pipe component includes upper casing and setting of casing, the upper casing and the cased central axis
Axially aligned, the cased outer diameter is less than the outer diameter of the upper casing, the upper casing and the cased connection
Part forms step surface, and the cased lower end is the second end of described sleeve pipe component,
The annular sleeve is sleeved on the cased outer wall, and the top of the annular sleeve is abutted with the step surface.
Preferably, the outer diameter of the annular sleeve is identical as the outer diameter of the upper casing.
Further, multiple protrusions are distributed on the step surface,
The top edge of the annular sleeve offers multiple card slots corresponding with the protrusion, each protrusion insertion pair
It is arranged in the card slot answered.
Preferably, the annular sleeve is radially divided into the first side and second side, and the bottom of described second side is higher than described the
The bottom of side, the puncture component and the protective shell are correspondingly arranged on the first side of described sleeve pipe wall.
Preferably, the first side that the setting of casing corresponds to the annular sleeve offers notch, and the top of the puncture component is embedding
Enter and is arranged in the notch.
Preferably, it is connected between first side and described second side of the annular sleeve by transition face, the transition
Face extends to described second side from first side and successively includes the first arc surface and the second arc surface, first arc surface
Radius be greater than second arc surface radius.
Further, the transition face further includes third arc surface, the camber line of first arc surface, described second
The camber line of the camber line of arc surface and the third arc surface forms S-curve.
Compared with prior art, the beneficial effects of the present invention are: in centreless puncture outfit casing tube component in the present invention no longer
It is provided with puncture core bar, and uses and is provided with puncture component on the tube wall of sheath assembly side.It punctures body component and is in initial shape
When state, protective shell covers the puncture tip of puncture component, when puncture body component is in puncture procedure state, resistance of the protective shell in stomach wall
Gear is lower to generate elastic deformation, and the puncture tip of puncture component is exposed from the bottom of protective shell.After puncturing body component and realizing puncture, kiss
The surgical instruments such as clutch can directly be entered by the inner passage that sheath assembly is formed, and the present invention makes compared to traditional puncture outfit
With more convenient.The design for puncturing body component had both saved the preparation cost of entire puncture outfit, and due to wearing in the present invention
Nematophore component does not interfere with seal assembly, there is no need to pack after splitting with sheath assembly, saves the packet of entire puncture outfit
Dress up this.In addition, punctured in the present embodiment the protective shell of body component puncture complete when in elastic force under the action of can return to it is initial
State, i.e. protective shell cover the bottom tip of puncture component, therefore are also avoided that puncture tip inertia is downward when completing and puncturing
Or puncture outfit rotates the occurrence of patient harm abdominal visceral browser in the course of surgery, centreless puncture outfit of the invention has more
High safe operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of centreless puncture outfit according to embodiments of the present invention；
Fig. 2 is the partial enlarged view of centreless puncture outfit second end shown in FIG. 1；
Fig. 3 is the partial schematic diagram of the first state in centreless puncture outfit puncture process according to an embodiment of the present invention；
Fig. 4 is the partial schematic diagram of second of state in centreless puncture outfit puncture process according to an embodiment of the present invention；
Fig. 5 is the structural schematic diagram that centreless puncture outfit according to an embodiment of the present invention punctures body component；
Fig. 6 is the decomposing state figure that centreless puncture outfit according to an embodiment of the present invention punctures body component；
Fig. 7 is the partial schematic diagram of centreless puncture outfit casing tube component according to an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.It is retouched in of the invention
In stating, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower",
"front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " clockwise ", " counterclockwise ", " axis
To ", " radial direction ", the orientation or positional relationship of the instructions such as " circumferential direction " be to be based on the orientation or positional relationship shown in the drawings.In addition, art
Language " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicate institute
The quantity of the technical characteristic of instruction." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least
One this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise bright
It is really specific to limit.
The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to be used to explain the present invention, and cannot understand
For limitation of the present invention.
As shown in Figure 1, the present embodiment provides a kind of centreless puncture outfit, including sheath assembly 1, seal assembly 2 and puncture
Body component 3, sheath assembly 1 define that one includes the inner cavity of first end (not shown) and second end 12 (i.e. in surgical procedure
The channel of medical instrument), the first end (not shown) of sheath assembly 1 refers to the upper port of sheath assembly 1, specifically casing group
The junction of part 1 and seal assembly 2.The first end of sheath assembly 1 is sealed by 2 selectivity of seal assembly, the structure of seal assembly 2
And the connection type of seal assembly 2 and sheath assembly 1 has been documented in the patent application document submitted before the applicant, packet
CN201710216813.8, CN201710216814.2, CN201710299930.5 are included, this will not be repeated here.First end is (in figure
It is not shown) refer to the upper port of sheath assembly 1, the specifically junction of sheath assembly 1 and seal assembly 2.Sheath assembly 1
It is provided in second end 12 and punctures body component 3."upper" in the present embodiment refers to the central axis direction sealing along sheath assembly 1
The direction of component 2."lower" refers to the direction that body component 2 is punctured along the central axis direction of sheath assembly 1, "upper", "lower" direction
Definition be suitable for the present embodiment centreless puncture outfit all components.It is provided in the second end 12 of sheath assembly 1 and punctures body group
Part 3, above-mentioned puncture body component 3 are applicable to the sheath assembly 1 of any specification.
With continued reference to Fig. 1 and Fig. 6, puncturing body component 3 includes puncture component, protective shell 32 and annular sleeve 33.
The bottom of puncture component is puncture tip 311, and above-mentioned puncture component is not limited to shape, can be sheet, rod-shaped or blocky
Deng.In one embodiment of the invention, puncture component is using puncture piece 31.Puncture the inner wall that piece 31 is fixed at annular sleeve 33
On, the outer wall for puncturing piece 31 is bonded with the internal partial wall of annular sleeve 33, prominent 1 second end of sheath assembly of puncture tip 311
12 end face and the bottom margin of annular sleeve 33 puncture piece 31 and are fixedly connected with 33 phase of annular sleeve.With reference to Fig. 6, annular sleeve 33
On offer pilot hole 331, puncture and be provided with locating piece 312 on piece 31, locating piece 312, which is embedded in pilot hole 331, engages installation,
So that puncture piece 31 fixed relative to the position of annular sleeve 33, puncture 31 bottom puncture tip 311 of piece protrusion annular sleeve 33 away from
From also fixing, it is convenient for volume production.In addition, the locating piece 312 for puncturing piece 31 is also avoided with the engaging of pilot hole 331 in puncture process
Middle puncture piece 31 is mobile relative to annular sleeve 33 or rotates, and influences being normally carried out for puncture procedure.Protective shell 32 is using elastic material
Material, can be medical grade rubber etc..The corresponding position for puncturing piece 31 of protective shell 32 is arranged on the outer wall of annular sleeve 33, protective shell 32
Including upper body 321 and lower case 322.The upper body 321 of protective shell 32 is fixedly connected in annular sleeve 33, upper case
Body 321 and the connection type of annular sleeve 33 are unlimited, can be any one in bonding, welding, riveting or clamping.Protective shell 32
The covering of lower case 322 puncture the puncture tip 311 of piece 31, the bottom of lower case 322 is that slightly protrusion punctures 31 bottom of piece
Form, effective covering of 32 pairs of protective shell puncture pieces 31 after being not only able to achieve before puncture or having punctured, but also facilitate puncture process
It carries out.Further, it is worn in order not to make the locating piece 312 for puncturing piece 31 form convex block in annular sleeve 33 and influence the present embodiment centreless
The normal operating of device is pierced, the shell of protective shell 32 is in Semi surrounding type, connect to form accommodating chamber with the outer wall of annular sleeve 33, will
The convex block that piece 31 is formed on 33 outer wall of annular sleeve is punctured to be coated in the accommodating chamber.Certainly, each corner of protective shell 32 need to be set
It is set to the form of the fillet of energy rounding off, conducive to the progress of puncture procedure.
Annular sleeve 33 after the assembly is completed, is sleeved on the of sheath assembly 1 in annular sleeve 33 by puncture component and protective shell 32
On two ends 12.Referring again to FIGS. 6, annular sleeve 33 is circumferentially divided into the first side 333 and second side 334, the bottom of second side 334 is high
In the bottom of the first side 333, punctures piece 31 and protective shell 32 is correspondingly arranged on the wall of the first side 333.It is mentioned here " high
In ", refer to bottom and sheath assembly of the bottom of second side 334 at a distance from 1 first end of sheath assembly less than the first side 333
The distance of 1 first end, i.e., when 1 state in a vertical shape of sheath assembly, the bottom end of second side 334 is located at the upper of 333 bottom end of the first side
Side.As shown in Figure 2, Figure 5 and Figure 6, it is connected between the first side 333 and second side 334 of annular sleeve 33 by transition face 335, mistake
Face 335 is crossed to extend from the first side 333 to second side 334 and successively include the first arc surface 335a, the second arc surface 335b and the
Three-arc face 335c, the central angle of the first arc surface 335a and the second arc surface 335b towards annular sleeve 33 second side 334,
The radius of first arc surface 335a is greater than the radius of the second arc surface 335b, the camber line of the first arc surface 335a, the second circle
The camber line of cambered surface 335b and the camber line of third arc surface 335c form S-curve.S-curve refers to that two turn
To between opposite circular curve with straight line or easement curve or it is radially connected made of planar linear.The bottom side of annular sleeve 33
High side is low, is first steep rear flat form from downside (the first side 333) to the transition face 335 of high side (second side 334), is puncturing
When, to puncture outfit apply power concentrate in puncture tip 311, and the bottom end face of sheath assembly 1 with puncture piece 31 into
When entering in abdominal cavity of patients, stomach wall is first gradually increased the resistance of puncture outfit, then reduces and keeps stable, is performing the operation conducive to doctor
In to the control of puncture procedure, and round and smooth transition face 335 and cambered surface is also conducive to the entrance of 1 second end 12 of sheath assembly, avoids
Patient skin is caused to damage.
As shown in fig. 7, sheath assembly 1 includes upper casing 13 and setting of casing 14, the first end of sheath assembly 1 is upper casing 13
Top, the second end 12 of sheath assembly 1 is the bottom end of setting of casing 14.The central axis of upper casing 13 and setting of casing 14 is along axial right
Together, the internal diameter that upper casing 13 is formed by the internal diameter in channel and setting of casing 14 is formed by channel is identical, what sheath assembly 1 was formed
Down space is consistent on the channel of surgical instrument disengaging, and doctor is facilitated to operate, and the outer diameter of setting of casing 14 is less than upper casing 13
The coupling part of outer diameter, upper casing 13 and setting of casing 14 forms the step surface 15 of circular ring shape.The side of setting of casing 14 offers slot
Mouthfuls 141, notch 141 is towards the bottom of setting of casing 14.
In assembly, annular sleeve 33 is sleeved on the outer wall of setting of casing 14, the central axis and setting of casing 14 of annular sleeve 33
Central axis overlapping, the top of annular sleeve 33 abuts with step surface 15, and the lower port of setting of casing 14 is contained in annular sleeve 33,
The lower end surface of setting of casing 14 is arc surface or inclined-plane, is matched with annular sleeve 33, outside wall surface and the annular sleeve 33 of setting of casing 14
Inner wall fitting is fixed, and the intensity of centreless puncture outfit the lower section tube wall is enhanced.The puncture being fixed on 33 inner wall of annular sleeve
Piece 31, which is embedded in the notch 141 of setting of casing 14, to be arranged, and prevents the puncture piece 31 during puncture from double swerve or upper and lower occur
It is mobile.The set-up mode that annular sleeve 33 abuts defines position of the annular sleeve 33 relative to sheath assembly 1, that is, limits puncture tip
311 position relative to 14 feather edge of setting of casing of end, is conducive to batch production, is also avoided that in puncture process annular sleeve 33 to set
The first end of tube assembly 1 is mobile, guarantees being normally carried out for puncture procedure.The outer diameter phase of the outer diameter of annular sleeve 33 and upper casing 13
Together, protrusion 16 is equal to the outer diameter of upper casing 13, dress along the sum of twice of the radial height of sheath assembly 1 and the outer diameter of setting of casing 14
The puncture outfit outer wall prepared is integrally in smooth shape.Annular sleeve 33 and the connection type of sheath assembly 1 are unlimited, and interference fit can be used
Or the modes such as be screwed and connect, in order to avoid annular sleeve 33 rotates in puncture process, the side being preferably interference fitted
Formula.Further for avoiding 33 facing sleeve component 1 of annular sleeve from rotating, setting is distributed on the step surface 15 of sheath assembly 1
Have multiple directed downwardly raised 16, the top edge of annular sleeve 33 offers multiple card slots 332, and protrusion 16 is a pair of with card slot 332 1
Setting should be engaged.Certainly, annular sleeve 33 and sheath assembly 1 block and connection type be not limited to above scheme, specially this field
Known to technical staff, therefore details are not described herein.When using centreless puncture outfit, as traditional puncture outfit, doctor is first suffering from
The abdomen of person scratches a small notch, and 32 bottom end of protective shell of the present embodiment centreless puncture outfit is then directed at small notch again, this
When, centreless puncture outfit is in original state, as shown in Fig. 2, protective shell 32 covers the puncture tip 311 for puncturing piece 31.It punctures
In the process, doctor applies downward power to puncture outfit, since protective shell 32 is using elastic material, so in the blocking of stomach wall
Under, protective shell 32 can generate flexible deformation.When if stomach wall is smaller to the barrier force of protective shell 32 or protective shell 32 use
It is the preferable material of elasticity, such as silicon rubber or polyurethane rubber etc., protective shell 32 understands longitudinal contraction, as shown in Figure 3.Silicon rubber
Refer to that main chain is alternately made of silicon and oxygen atom, the rubber there are two organic group is usually connected on silicon atom, silicon rubber has pole
Good heat-resisting, cold-resistant, ageing-resistant performance, insulation resistance, dielectric property are excellent, and thermal conductivity is good.Polyurethane rubber is polymerization owner
Contain the series of elastic body material of more carbamate groups on chain, polyurethane rubber stretches intensity, tearing by force with excellent
Degree and wearability, oil resistant, resistance to ozone are splendid, also resistance to atomic radiation.If the barrier force that protective shell 32 is subject to is excessive or protects
When the elastic properties of materials that shell 32 uses is little, the lower case 322 of such as natural rubber etc., protective shell 32 will form bending, such as Fig. 4
It is shown.Natural rubber (NR) is a kind of along Isosorbide-5-Nitrae polyisoprene natural polymer as main component, natural rubber
(NR) there is excellent resilience, tensile strength, elongation, wearability, tearing and compression set performance.Protection of pipe shell 32
It is which kind of deformation, all puncture tip 311 can finally exposes from the bottom of protective shell 32, puncture tip 311 is small on abdomen
Notch enters the inside of abdominal cavity of patients.When puncture outfit complete puncture when, the lower case 322 of protective shell 32 also with puncture piece 31 into
Enter in abdominal cavity of patients, stomach wall disappears to the barrier force of protective shell 32, and protective shell 32 returns to initial shape under the action of own resilient
State, the i.e. lower case 322 of protective shell 32 cover the puncture tip 311 for puncturing piece 31 again.
Using the traditional puncture core bar realization puncture function of the replacement of body component 3 is punctured in the present embodiment, worn compared to tradition
Device is pierced, structure is simpler, and cost is lower.It is set up directly on the tube wall of sheath assembly 1 simultaneously as puncturing body component 3, is not necessarily to
It is inserted by seal assembly 2, therefore the puncture body component 3 in the present embodiment does not influence the sealing performance of seal assembly 2,
Packaging when without will puncture body component 3 disassemble with sheath assembly 1 realize split pack, save single puncture outfit
Packaging space and packing cost, therefore the centreless puncture outfit in the present embodiment has biggish economic benefit.
In addition, the protective shell 32 of the present embodiment centreless puncture outfit in original state and can puncture state under the action of elastic force
Between change rapidly, even for the doctor of some experiences not enough when using centreless puncture outfit in the present embodiment, also can
Puncture tip 311 is effectively avoided to cause since downward inertia force or puncture outfit rotate in the course of surgery to trouble when entering abdominal cavity
The injury of person.Therefore, the centreless puncture outfit in the present embodiment has higher safe operation.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (12)
1. a kind of centreless puncture outfit, which is characterized in that including sheath assembly and puncture body component, the puncture body component is at least
A part is fixedly connected with described sleeve pipe component, and the puncture body component includes puncture component and protective shell, and the puncture component includes
Puncture tip, the protective shell is elastic material, and when original state, the protective shell covers the puncture tip；The protection
Shell can generate elastic deformation or restPose, to allow the puncture tip to expose from the bottom of the protective shell or by institute
State protective shell covering.
2. centreless puncture outfit according to claim 1, which is characterized in that described sleeve pipe component includes first end and second
It holds, is fixedly installed in the second end of described sleeve pipe component and punctures body component, the puncture tip of the puncture component protrudes from described
The end face of sheath assembly second end, the protective shell include upper body and lower case, and the upper body is direct or indirect
Ground is fixedly connected with described sleeve pipe component, and the lower case covers the puncture tip of the puncture component.
3. centreless puncture outfit according to claim 2, which is characterized in that the puncture body component further includes annular sleeve, institute
It states puncture component to be fixed on the inner wall of the annular sleeve, the puncture tip of the puncture component protrudes from the bottom of the annular sleeve
Portion edge, the protective shell is arranged on the outer wall of the annular sleeve and position is corresponding with the puncture component, the annular
It is sleeved in the second end of described sleeve pipe component.
4. centreless puncture outfit according to claim 3, which is characterized in that pilot hole is offered in the annular sleeve, it is described
Locating piece is provided on puncture component, the locating piece, which is embedded in the pilot hole, to be arranged.
5. centreless puncture outfit according to claim 3, which is characterized in that the connection side of the protective shell and the annular sleeve
Formula is any one in bonding, welding, riveting or clamping.
6. centreless puncture outfit according to claim 3, which is characterized in that described sleeve pipe component includes upper casing and traps
Pipe, the upper casing and the cased central axis are axially aligned, and the cased outer diameter is less than the upper casing
Outer diameter, the upper casing and the cased coupling part form step surface,
The annular sleeve is sleeved on the cased outer wall, and the top of the annular sleeve is abutted with the step surface.
7. centreless puncture outfit according to claim 6, which is characterized in that the outer diameter of the annular sleeve and the upper casing
Outer diameter is identical.
8. centreless puncture outfit according to claim 6, which is characterized in that multiple protrusions are distributed on the step surface,
The top edge of the annular sleeve offers multiple card slots corresponding with the protrusion, and each protrusion insertion is corresponding
It is arranged in the card slot.
9. centreless puncture outfit according to claim 3, which is characterized in that the annular sleeve is radially divided into the first side and
Two sides, the bottom of described second side are higher than the bottom of first side, and the puncture component and the protective shell are correspondingly arranged at institute
It states on the first side of annular sleeve.
10. centreless puncture outfit according to claim 9, which is characterized in that the setting of casing corresponds to the of the annular sleeve
Side offers notch, and the top of the puncture component, which is embedded in the notch, to be arranged.
11. centreless puncture outfit according to claim 10, which is characterized in that first side of the annular sleeve and described
It is connected between second side by transition face, the transition face extends to described second side from first side and successively includes first
Arc surface and the second arc surface, the radius of first arc surface are greater than the radius of second arc surface.
12. centreless puncture outfit according to claim 11, which is characterized in that the transition face further includes third arc surface,
The camber line of the camber line of first arc surface, the camber line of second arc surface and the third arc surface
Form S-curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711498349.2A CN109984812B (en) | 2017-12-31 | 2017-12-31 | Coreless puncture outfit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711498349.2A CN109984812B (en) | 2017-12-31 | 2017-12-31 | Coreless puncture outfit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109984812A true CN109984812A (en) | 2019-07-09 |
| CN109984812B CN109984812B (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711498349.2A Active CN109984812B (en) | 2017-12-31 | 2017-12-31 | Coreless puncture outfit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201324272Y (en) * | 2008-12-08 | 2009-10-14 | 杭州桐庐尖端内窥镜有限公司 | Puncture needle for puncture outfit |
| US20100081994A1 (en) * | 2008-10-01 | 2010-04-01 | David Leslie Zisow | Self Retaining Laparoscopic Trocar System-Zisow Trocar Sleeve System |
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| US20100081994A1 (en) * | 2008-10-01 | 2010-04-01 | David Leslie Zisow | Self Retaining Laparoscopic Trocar System-Zisow Trocar Sleeve System |
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| CN203303122U (en) * | 2013-05-29 | 2013-11-27 | 杭州康基医疗器械有限公司 | Limiting and locking puncture needle |
| CN106510812A (en) * | 2016-12-09 | 2017-03-22 | 成都五义医疗科技有限公司 | Cutter-free puncture needle capable of emitting sound |
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| CN106510811A (en) * | 2016-12-09 | 2017-03-22 | 成都五义医疗科技有限公司 | Dimidiate dual mode puncture needle without knife |
| CN206714800U (en) * | 2016-12-09 | 2017-12-08 | 成都五义医疗科技有限公司 | A kind of touch feedback formula puncture needle and puncture outfit |
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