CN109984780A - A kind of sheath assembly - Google Patents
A kind of sheath assembly Download PDFInfo
- Publication number
- CN109984780A CN109984780A CN201711499511.2A CN201711499511A CN109984780A CN 109984780 A CN109984780 A CN 109984780A CN 201711499511 A CN201711499511 A CN 201711499511A CN 109984780 A CN109984780 A CN 109984780A
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- Prior art keywords
- sheath assembly
- pipe shaft
- fixed part
- assembly according
- placing groove
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- 230000007704 transition Effects 0.000 claims description 11
- 230000004323 axial length Effects 0.000 claims description 5
- 238000012856 packing Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 description 38
- 210000000683 abdominal cavity Anatomy 0.000 description 15
- 238000000034 method Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000007912 intraperitoneal administration Methods 0.000 description 4
- 210000002784 stomach Anatomy 0.000 description 4
- 210000001835 viscera Anatomy 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000005646 Pneumoperitoneum Diseases 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/0034—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means adapted to be inserted through a working channel of an endoscope
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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 sheath assembly, including pipe shaft and fixed part, the pipe shaft is integrally formed or is connected with each other with the fixed part, and the fixed part is arranged on the outer wall of the pipe shaft, and the fixed part is used to for the pipe shaft connecting with body component is punctured.Sheath assembly in the present invention is used for centreless puncture outfit, keeps centreless puncture outfit easy to use, has both saved the preparation cost of entire puncture outfit, also saves the packing cost of puncture outfit.
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 sheath assembly.
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 sheath assembly, solves puncture outfit in the prior art
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 sheath assembly, including pipe shaft and fixed part, the pipe shaft and institute
It states fixed part to be integrally formed or be connected with each other, the fixed part is arranged on the outer wall of the pipe shaft, and the fixed part is used for
The pipe shaft is connect with body component is punctured.
Preferably, the both ends of the pipe shaft are respectively first end and second end, and the first end is selected by the seal assembly
The sealing of selecting property, the second end are not closed, and the fixed part is arranged on the tube wall of the pipe shaft second end.
Further, the fixed part is arranged on the outer wall of the pipe shaft.
Preferably, the fixed part is holding tank,.
Preferably, the outer wall of the pipe shaft is recessed to form placing groove to described sleeve pipe component inner cavity, the placing groove
Central axis and the pipe shaft centerline axis parallel, the second end of the bottom of the placing groove towards the pipe shaft forms slot
Mouthful, the top of the placing groove and the pipe shaft form bearing surface.
Further, the central axis of the holding tank and the centerline axis parallel of the placing groove or overlapping.
Further, the top of the holding tank is Chong Die with the top of the placing groove, and the holding tank is along axial length
Degree is less than the placing groove along axial length.
Preferably, the pipe shaft second end is radially divided into the first side and second side, and described second side is higher than described first
Side, the fixed part are arranged on the tube wall of first side.
Further, first side bottom end of second end is connected with the bottom end of described second side by transition face, described
Transition face from the first side to second side extend and successively include the first arc surface and the second arc surface, first arc surface partly
Diameter is greater than the radius of second arc surface, and the center of circle of first arc surface and second arc surface is towards described second
The second side at end.
Further, second side outside wall surface of described sleeve pipe component second end is cambered surface, and the cambered surface is from described sleeve pipe group
The vertical pipe wall surface of part extends to second arc surface, and the radius of the cambered surface is greater than the radius of second arc surface, institute
The center of circle of cambered surface is stated towards the first side of the second end.
Compared with prior art, the beneficial effects of the present invention are: the sheath assembly in the present invention is used for centreless puncture outfit,
There are no more puncture core bars in centreless puncture outfit casing tube component, and use to be provided on the tube wall of sheath assembly side and wear
Nematophore component, when puncture body component is in original state, protective shell envelopes the bottom tip of puncturing lever, punctures body component and is in
When puncture procedure state, protective shell no longer envelopes the bottom tip of puncturing lever to puncturing lever top slide.Puncturing body component
It realizes after puncturing, the surgical instruments such as stapler can directly be entered by the inner passage that sheath assembly is formed, easy to use.And it wears
The design of nematophore component had both saved the preparation cost of entire puncture outfit, and since the puncture body component in the present invention will not shadow
It rings and arrives seal assembly, there is no need to pack after splitting with sheath assembly, therefore also save the packing cost of entire puncture outfit.This
Outside, so that puncture body component is in original state due to puncturing the meeting slide downward when puncturing completion of the protective shell in body component, protect
Protective case envelopes the bottom tip of puncturing lever, therefore is also avoided that when completing and puncturing puncturing lever tip inertia downwards or puncture outfit
The intraperitoneal internal organs of rotation patient harm, centreless puncture outfit of the invention have higher safe operation in the course of surgery.
Detailed description of the invention
Fig. 1 is structural schematic diagram according to an embodiment 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 structural representation of centreless puncture outfit second end when protective shell according to embodiments of the present invention is located at operating position
Figure；
Fig. 4 is the structural schematic diagram of sheath assembly second end according to an embodiment of the present invention；
Fig. 5 is the assembling schematic diagram of puncturing lever according to an embodiment of the present invention；
Fig. 6 is the cross-sectional view that body component is punctured when protective shell according to embodiments of the present invention is located at initial position；
Fig. 7 is the cross-sectional view that body component is punctured when protective shell according to embodiments of the present invention is located at operating position.
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 centreless puncture outfit includes sheath assembly 1, sealing present embodiment discloses a kind of centreless puncture outfit
Component 2 and body component 3 is punctured, sheath assembly 1 defines that one includes that the inner cavity of first end and second end 12 (was performed the operation
The channel of medical instrument in journey), the first end of sheath assembly 1 carries out selective sealing by seal assembly 2, and first end is (in figure not
Show) refer to the upper port of sheath assembly 1, the specifically junction of sheath assembly 1 and seal assembly 2.The of sheath assembly 1
It is provided on two ends 12 and punctures body component 3."upper" in the present embodiment refers to the central axis along sheath assembly 1 towards sealing group
The direction of part 2."lower" refer to the central axis along sheath assembly 1 towards the direction for puncturing body component 2, "upper", "lower" direction
Definition is suitable for all components of the present embodiment centreless puncture outfit.Puncture the central axis of body component 3 and the central axis of sheath assembly 1
In parallel, puncturing body component 3 includes that puncturing lever 31 and 32 puncturing lever 31 of protective shell are fixed on the outer wall of sheath assembly 1.Such as
Puncturing lever 31 shown in Fig. 5 includes top 311 and bottom 312, and puncture tip is formed on bottom 312, and the bottom 312 of puncturing lever 31 is prominent
In the end face of 1 second end 12 of sheath assembly.As shown in Figures 2 and 3, protective shell 32 selectively envelopes the bottom of puncturing lever 31
312, protective shell 32 is slidably connected with sheath assembly 1 or puncturing lever 31.
In the present embodiment, traditional puncture core bar is replaced using body component 3 is punctured, realizes and punctures function.In the present embodiment
Puncture body component 3 be applicable to the sheath assembly 1 of any specification.Protective shell 32 can be along the tube wall and puncturing lever of sheath assembly 1
31 slidings, realize the selective coated for 31 bottom 312 of puncturing lever.As depicted in figs. 1 and 2, in the initial state, centreless is worn
The protective shell 32 of thorn device is located at initial position, envelopes the bottom 312 of puncturing lever 31.Doctor is punctured using the present embodiment centreless
When device, a small notch is scratched in the abdomen of patient first, then again by the bottom of the protective shell 32 of the present embodiment centreless puncture outfit
End alignment small notch, applies downward power to centreless puncture outfit, protective shell 32 is under the blocking of patient's stomach wall, along sheath assembly 1
Tube wall upward sliding, as shown in figure 3, protective shell 32 is now placed in operating position, i.e. protective shell 32 no longer envelopes puncturing lever
The end face of 1 second end 12 of sheath assembly is stretched out from protective shell 32 and protruded from 31 bottom 312, the bottom 312 of puncturing lever 31,
Alignment small notch is downwardly into inside abdominal cavity of patients, and the second end 12 of sheath assembly 1 is driven to enter inside abdominal cavity of patients jointly,
It completes to puncture.
In order to guarantee that the channel space of the formation of sheath assembly 1 facilitates the operation of surgical instrument, above-mentioned puncture body component 3 is arranged
On the outer wall of sheath assembly 1.
In one embodiment of the invention, protective shell 32 is slidably connected with puncturing lever 31.In another reality of the invention
It applies in example, protective shell 32 is slidably connected with sheath assembly 1, and one such connection type is that the tube wall setting of sheath assembly 1 is slided
Rail, protective shell 32 is arranged in sliding rail, to realize sliding.Certainly, slip connection mode is not limited to connection described above
Mode and connection type hereinafter, are well known to those skilled in the art, without departing from the spirit of the invention, may be used also
Using other slip connection modes.
The present embodiment centreless puncture outfit replaces traditional puncture core bar to realize puncture function, compares using body component 3 is punctured
In traditional puncture outfit, structure is simpler, and cost is lower.Simultaneously as puncturing the pipe that body component 3 is set up directly on sheath assembly 1
On wall, body component 3 is punctured for the sealing performance of seal assembly 2 without being inserted by seal assembly 2, therefore in the present embodiment
It does not influence, disassembles in packaging without will puncture body component 3, pack, save after realizing fractionation with sheath assembly 1
The packaging space and packaging and transportation cost of single puncture outfit.
When completing to puncture, since protective shell 32 also enters the abdominal cavity of patient with puncturing lever 31, protective shell 32 is obtained
Release, no longer by the blocking of stomach wall, protective shell 32 is under the action of other external force and gravity along the tube wall of sheath assembly 1 to moving down
It is dynamic, initial position is returned to from operating position, envelopes 312 tip of bottom of puncturing lever 31 again.So even if some experiences also
Inadequate doctor when using centreless puncture outfit in the present embodiment, also can effectively avoid 312 tip of bottom of puncturing lever 31 into
When entering abdominal cavity due to rotating centreless puncture outfit in downward inertia force or surgical procedure, intraperitoneal each internal organs are caused
It damages, the centreless puncture outfit in the present embodiment has higher safe operation.
It completes after puncturing, without carrying out other operations to puncture body component 3, directly by stapler, tweezers needed for operation
Etc. the channel that is formed by sheath assembly 1 of surgical instruments protrude into abdominal cavity of patients and perform the operation, it is easy to use.The present embodiment
In puncture body component 3 outside wall surface of sheath assembly 1,1 top of internal diameter and sheath assembly of 1 second end 12 of sheath assembly are set
The internal diameter in channel is essentially identical, convenient for the disengaging of instrument.
Referring to Fig.1~Fig. 4, the present embodiment puncture for convenience, and the second end 12 of sheath assembly 1 is radially divided into the first side
121 and second side 122, second side 122 is higher than the first side 121, punctures body component 3 and is arranged on the tube wall of the first side 121.Here
Described "high" refers to the distance of 122 distance sleeve component of second side, 1 first end less than 121 distance sleeve component 1 of the first side
The distance of first end, i.e., when 1 state in a vertical shape of sheath assembly, the bottom end of second side 122 is located at the upper of 121 bottom end of the first side
Side.
Specifically, in addition to being connected by outer peripheral surface, the first side 121 of 1 second end 12 of sheath assembly and second side 122 it
Between be also connected by transition face 123, transition face 123 extends from the first side 121 to second side 122 and successively including the first arc surface
The radius of 123a and the second arc surface 123b, the first arc surface 123a are greater than the radius of the second arc surface 123b.
122 outside wall surface of second side of 1 second end 12 of sheath assembly is cambered surface 124, which erects from sheath assembly 1
Straight pipe wall extends towards the second arc surface 123b, and the radius of cambered surface 124 is greater than the radius of the second arc surface 123b.First arc surface
The center of circle of 123a and the second arc surface 123b are towards second side 122 of second end 12, and the center of circle of cambered surface 124 is towards second end 12
First side 121.Round and smooth transition face 123 and cambered surface 124 is conducive to the entrance of 1 second end 12 of sheath assembly, avoids in puncture process
In patient skin is caused to damage.
For puncturing lever 31 during puncture, sheath assembly 1 enters patient along transition face 123 under the drive of puncturing lever 31
Abdominal cavity.Second side 122 of 1 second end 12 of sheath assembly is high relative to the first side 121, and from the first side 121 to second side
122 transition faces 123 that extend be it is first steep after flat form, convenient power downward during puncture concentrate on puncturing lever 31 with
And on the first side 121 of 1 second end 12 of sheath assembly.When the transition face 123 of sheath assembly 1 is completely into abdominal cavity of patients inside
When, sheath assembly 1 continues to enter abdominal cavity, transition face 123 and second side along the 122 outer wall cambered surface 124 of second side of second end 12
The shape of cambered surface 124 makes 1 second end 12 of sheath assembly in entering abdominal cavity of patients on 122 outer walls, resistance of the stomach wall to puncture outfit
Power is gradually increased first, is then reduced and is kept stable, conducive to doctor during surgery to the control of puncture procedure.
In addition, as shown in figure 4, the outer wall of 1 second end 12 of sheath assembly is recessed to form placement towards the inner cavity of sheath assembly 1
Slot 125, placing groove 125 form bearing surface (not shown), the other end of placing groove 125 far from the side of 12 end face of second end
Opening is formed towards the second end 12 of sheath assembly 1, puncturing lever 31 is placed in placing groove 125, and the top 311 of puncturing lever 31 abuts
On bearing surface.The central axis of puncturing lever 31, placing groove 125 and sheath assembly 1 is axially aligned.
The shape of placing groove 125 is preferably provided in the arc-shaped, the convenient receiving for puncturing lever 31.Realizing the mistake punctured
Cheng Zhong applies downward power to centreless puncture outfit, and puncturing lever 31 is downwardly into inside abdominal cavity of patients, and bearing surface resists puncturing lever 31
Top 311, prevent it mobile to the first end of sheath assembly 1.
It is special further for preventing puncturing lever 31 from generating undesirable movement in puncture process referring to Fig. 2, Fig. 4~7
It is not the first end movement towards sheath assembly 1, puncturing lever 31 successively includes the first bar along the direction of top 311 towards bottom 312
Outer diameter of the outer diameter less than the second body of rod 31b of body 31a and the second body of rod 31b, the first body of rod 31a, 1 second end 12 of sheath assembly
The holding tank 126 of upper end closed is formed on first side, 121 wall surface, the outer diameter of the first body of rod 31a is less than the internal diameter of holding tank 126,
First body of rod 31a, which is placed in holding tank 126, to be arranged, and the outer diameter of the second body of rod 31b is greater than the internal diameter of holding tank 126, second body of rod
The upper surface of 31b is abutted with the lower end surface of holding tank 126.Holding tank 126 forms puncturing lever 31 and sheath assembly 1 firmly
Connection prevents puncturing lever 31 mobile during puncture, concentrates on power in the puncture tip of 31 bottom 312 of puncturing lever.
With continued reference to Fig. 5~7, the puncturing lever 31 in the present embodiment further includes third body of rod 31c, the first body of rod 31a, second
Body of rod 31b and third body of rod 31c are sequentially connected setting, wherein outer diameter of the outer diameter of third body of rod 31c less than the second body of rod 31b,
The coupling part of second body of rod 31b and third body of rod 31c form first step 313.Protective shell 32 in the present embodiment is hollow
Cylindrical body is sleeved on the outside of puncturing lever 31, and along 31 top 311 of puncturing lever towards the direction of bottom 312, protective shell 32 is successively wrapped
The protection of the first protection section 32a and second section 32b is included, the internal diameter of the first protection section 32a is slightly larger than the outer diameter of the second body of rod 31b, the
Bipole body 31b's is at least partly placed in the first protection section 32a, and the internal diameter of the second protection section 32b is slightly larger than third bar
The outer diameter of body 31c, the part of third body of rod 31c are placed in the second protection section 32b, and the internal diameter of the second protection section 32b is less than
The coupling part of the internal diameter of first protection section 32a, the second protection section 32b and the first protection section 32a form second step 321, the
Two steps 321 are located at the lower section of first step 313, are arranged with elastic element between first step 313 and second step 321
33。
Specifically, which is spring, which is arranged around third body of rod 31c.It certainly, is art technology
Personnel are known, and without departing from the spirit of the invention, the element or other shapes of other forms can also be used in elastic element 33
The set-up mode of formula, as long as flexible deformation can be realized between first step 313 and second step 321.
Especially, in order to which the sliding distance to protective shell 32 limits, and protective shell 32 is prevented to be detached from puncturing lever simultaneously
31 fall, and axially offer kidney-shaped shift holes 314 along puncturing lever 31 on the second body of rod 31b, and positioning pin 34 passes through the shift holes
314, positioning pin 34 is greater than the outer diameter of the second body of rod 31b and outer less than the first protection section 32a along the length of the second body of rod 31b
Diameter, the two sides of positioning pin 34 are fixedly connected with protective shell 32 respectively.Certainly, above-mentioned shift holes 314 be also possible to rectangle or its
His elongate in shape.
Puncturing lever 31 in the present embodiment is three-stage, can be integrally formed or fission forms.Equally, in the present embodiment
Protective shell 32 is two-part, is also possible to be integrally formed or fission forms.
As shown in Figure 5 and Figure 6, when initial position envelopes 31 312 tip of bottom of puncturing lever, elastic element 33 is this
Spring in embodiment is in nature reset condition, and positioning pin 34 is located at the bottommost of shift holes 314.As shown in fig. 7, puncturing through
Cheng Zhong, protective shell 32 is mobile to 31 top 311 of puncturing lever under the blocking of stomach wall, and positioning pin 34 is also to shift holes in kidney slot
314 top is mobile, meanwhile, second step 321 moves up, the Distance Shortened of first step 313 and second step 321, spring
It shrinks, 31 bottom of puncturing lever, 312 tip protrudes from protective shell 32, the axial length of shift holes 314 and the stroke limiting of spring
Protective shell 32 transportable distance, avoids it from excessively moving up.When completing to puncture, protective shell 32 enters abdominal cavity with puncturing lever 31
Inside, protective shell 32 return to initial position under the action of its own gravity and spring force, and spring also returns to primitive nature shape
State, positioning pin 34 fall back to the bottommost 312 of shift holes 314.
It is defined by the distance that positioning pin 34 moves up protective shell 32, and simultaneously in the displacement of protective shell 32
Elastic force is had additional in journey, so that protective shell 32 can return to initial position in time, to 31 bottom of puncturing lever when completing to puncture
Cladding is realized at 312 tips, prevents it from causing to damage to intraperitoneal internal organs, therefore, this kind of puncturing lever 31 and protective shell 32
Set-up mode further improves the safety of centreless puncture outfit in the present embodiment.
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 (10)
1. a kind of sheath assembly, which is characterized in that including pipe shaft and fixed part, the pipe shaft is integrally formed with the fixed part
Or be connected with each other, the fixed part is arranged on the outer wall of the pipe shaft, and the fixed part is used for the pipe shaft and punctures body
Component connection.
2. sheath assembly according to claim 1, which is characterized in that the both ends of the pipe shaft are respectively first end and second
End, the first end are selectively sealed by the seal assembly, and the second end is not closed, and the fixed part is arranged in the pipe
On the tube wall of body second end.
3. sheath assembly according to claim 2, which is characterized in that the outer wall of the pipe shaft is arranged in the fixed part
On.
4. sheath assembly according to claim 2, which is characterized in that the fixed part is holding tank.
5. sheath assembly according to claim 4, which is characterized in that the outer wall of the pipe shaft is to described sleeve pipe component
Inner cavity is recessed to form placing groove, the centerline axis parallel of the central axis of the placing groove and the pipe shaft, the placing groove
The second end of bottom towards the pipe shaft forms notch, and the top of the placing groove and the pipe shaft form bearing surface.
6. sheath assembly according to claim 5, which is characterized in that the central axis of the holding tank and the placing groove
Centerline axis parallel or overlapping.
7. sheath assembly according to claim 6, which is characterized in that the top at the top of the holding tank and the placing groove
Portion's overlapping, the holding tank are less than the placing groove along axial length along axial length.
8. sheath assembly according to claim 2, which is characterized in that the pipe shaft second end be radially divided into the first side and
Second side, described second side are higher than first side, and the fixed part is arranged on the tube wall of first side.
9. sheath assembly according to claim 8, which is characterized in that first side bottom end of second end and described second
The bottom end of side is connected by transition face, and the transition face extends from the first side to second side and successively including the first arc surface and the
Two arc surfaces, the radius of first arc surface are greater than the radius of second arc surface, first arc surface and described the
The center of circle of two arc surfaces is towards second side of the second end.
10. sheath assembly according to claim 9, which is characterized in that second side outer wall of described sleeve pipe component second end
Face is cambered surface, and the cambered surface extends from the vertical pipe wall surface of described sleeve pipe component to second arc surface, the half of the cambered surface
Diameter is greater than the radius of second arc surface, and the center of circle of the cambered surface is towards the first side of the second end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499511.2A CN109984780B (en) | 2017-12-31 | 2017-12-31 | Sleeve assembly |
Applications Claiming Priority (1)
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| US9615838B2 (en) * | 2015-01-13 | 2017-04-11 | Eca Medical Instruments | Trocar device with detachable handle and associated methods |
| CN106860965A (en) * | 2017-02-21 | 2017-06-20 | 中国人民解放军第三军医大学第附属医院 | Inner cannulated arteriovenous catheter |
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| US5916232A (en) * | 1997-10-10 | 1999-06-29 | Applied Medical Resources Corporation | Asymmetrical obturator |
| US20130289601A1 (en) * | 2005-01-28 | 2013-10-31 | Covidien Lp | Optical penetrating adapter for surgical portal |
| US20090076323A1 (en) * | 2005-03-31 | 2009-03-19 | Tyco Healthcare Group Lp | Optical obturator |
| US20090312782A1 (en) * | 2008-06-13 | 2009-12-17 | Maxwell Choongwon Park | Method and apparatus for repairing tendons |
| US20100081994A1 (en) * | 2008-10-01 | 2010-04-01 | David Leslie Zisow | Self Retaining Laparoscopic Trocar System-Zisow Trocar Sleeve System |
| CN102525572A (en) * | 2010-11-11 | 2012-07-04 | 德普伊米特克公司 | Cannula system and method for partial thickness rotator cuff repair |
| US20170035495A1 (en) * | 2013-03-14 | 2017-02-09 | Kyphon Sarl | Blunt tip surgical cutting device and method |
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| CN106377304A (en) * | 2016-12-09 | 2017-02-08 | 成都五义医疗科技有限公司 | Button driven type automatic moving protecting puncture needle |
| CN106860965A (en) * | 2017-02-21 | 2017-06-20 | 中国人民解放军第三军医大学第附属医院 | Inner cannulated arteriovenous catheter |
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| CN109984780B (en) | 2020-09-11 |
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