CN109646085A - A kind of connection structure for centreless puncture outfit - Google Patents
A kind of connection structure for centreless puncture outfit Download PDFInfo
- Publication number
- CN109646085A CN109646085A CN201711468698.XA CN201711468698A CN109646085A CN 109646085 A CN109646085 A CN 109646085A CN 201711468698 A CN201711468698 A CN 201711468698A CN 109646085 A CN109646085 A CN 109646085A
- Authority
- CN
- China
- Prior art keywords
- tip
- puncture
- connection structure
- centreless
- puncture outfit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
-
- 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
Abstract
The invention discloses a kind of connection structure for centreless puncture outfit, the centreless puncture outfit includes casing and puncture tip, and casing includes accommodation groove, and puncture tip includes shaft；The connection structure includes accommodation groove and shaft；Accommodation groove is for accommodating shaft, also, accommodation groove accommodating shaft is so that puncture tip has first state and the second state.The connection structure of centreless puncture outfit of the invention enables to the rotation of puncture tip flexible, and in instrument insertion, puncture tip is easy to open, and when puncture outfit is extracted, puncture tip is easy to close.Also, puncture tip does not have before centreless puncture outfit use and undesirable rotation in insertion process.
Description
Technical field
The present invention relates to a kind of connection structures for centreless puncture outfit, belong to medical instruments field.
Background technique
Puncture outfit can establish into channel, enter body cavity for Minimally Invasive Surgery instrument, while providing gas passage, in body cavity
Gaseous environment is established, inside to carry out inspection or surgical procedure.Body cavity includes abdominal cavity.
Having core puncture outfit and centreless puncture outfit includes seal assembly and casing, and mutually isostructural seal assembly and casing can
Suitable for centreless puncture outfit and there is core puncture outfit.In the present invention seal assembly of centreless puncture outfit with and seal assembly and casing
Connection type be documented in the patent application document submitted before the applicant, including CN201710216813.8,
CN201710216814.2、CN201710299930.5。
The applicant before have submitted the several parts of applications for a patent for invention about centreless puncture outfit, as CN106333734A,
CN106377302A and CN106333733A etc..The structure pair of coupling part between the puncture tip and casing of centreless puncture outfit
There is larger impact in the performance of puncture outfit.
Summary of the invention
The applicant proposes new centreless puncture outfit, and including new connection structure, connection structure is for puncture tip and set
The connection of pipe.
A kind of connection structure for centreless puncture outfit, the centreless puncture outfit include casing and puncture tip, the set
Pipe includes accommodation groove, and the puncture tip includes shaft；The connection structure includes the accommodation groove and the shaft；The appearance
Slot is set for accommodating the shaft, also, the accommodation groove accommodate the shaft may make puncture tip have first state and
Second state.
Described sleeve pipe further comprises mating surface, and the connection structure also further comprises the mating surface, the accommodating
Slot is set to the mating surface.
The mating surface is plane.
In said first condition, keep conllinear between the puncture tip and described sleeve pipe, the puncture tip is opposite
It is not able to rotate in described sleeve pipe.
In said second condition, the puncture tip is allowed to rotate relative to described sleeve pipe.
The accommodation groove, which includes first and second, described first and described second, can accommodate the shaft；
Described first has the first width, and described second has the second width；The outer peripheral surface of the shaft is oval, and described first
Width is greater than the length of the elliptical short axle and the length less than the elliptical long axis, second width are greater than described ellipse
The length of round long axis.
Described first is top, and described second is lower part.
The puncture tip further comprises the first tip, and first tip has slanting inner surface.
The puncture tip further comprises the second tip, and first tip is parallel with second tip.
First tip is interior tip, and second tip is outer tip.
The interior tip and the outer tip include two support arms, the support arm intersection of two of the interior tip, institute
State two support arm intersections at outer tip.
The interior tip and the outer tip form two arms after crossing；The quantity of the shaft is two, each described
One shaft is set on the inner surface of arm.
The connection structure of centreless puncture outfit enables to the rotation of puncture tip flexible, and in instrument insertion, puncture tip is easy
In unlatching, when puncture outfit is extracted, puncture tip is easy to close.Also, puncture tip is before centreless puncture outfit use and is inserted into
Undesirable rotation is not had in the process.
Detailed description of the invention
Fig. 1 is the schematic diagram of centreless puncture outfit when puncture tip is opened；
Fig. 2 is the schematic diagram of centreless puncture outfit；
Fig. 3 is the diagrammatic cross-section of centreless puncture outfit；
Fig. 4 is the schematic diagram of puncture tip；
Fig. 5 is the schematic diagram of accommodation groove and shaft cooperation.
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, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed 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
It is a etc., unless otherwise specifically defined.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for solving
The present invention is released, and is not considered as limiting the invention.
As shown in Figure 1, centreless puncture outfit 100 includes seal assembly 3, casing 2 and puncture tip 1.
Casing 2 is hollow pipe, with first end 21 and second end.The second end of casing 2 is selected by seal assembly 3
Property sealing, first end 21 selectively unlocks or is closed by puncture tip 1.It should be noted that in the present invention, the of casing 2
One end 21 be punctured tip 1 closure refer to not relatively rotating between puncture tip 1 and casing 2, puncture tip 1 and set 2 it
Between conllinear, mutual angle be zero, as shown in Figures 2 and 3.The structure and seal assembly 3 and casing 2 of seal assembly 3
Connection type be documented in the patent application document submitted before the applicant, including CN201710216813.8,
CN201710216814.2, CN201710299930.5, this will not be repeated here.
As shown in figure 4, puncture tip 1 includes interior tip, outer tip and two shafts 12.Interior tip is parallel with outer tip,
They have common central axis, the i.e. central axis of puncture tip 1.Interior tip and outer tip include two support arms, interior
Tip is formed after two support arms intersection at tip, forms tip after two support arms intersection at outer tip.Interior tip and outer tip are handed over
Two arms 11 are formed after remittance, i.e. arm 11 is interior tip and the common part in outer tip.Puncture tip 1 is integrally formed.It uses at outer tip
In piercing through subcutaneous tissue, interior tip is used to increase the whole intensity of puncture tip 1.Interior tip is along the central axis side of puncture tip
To size be less than outer tip.The inner surface other than the inner surface of arm 11 at interior tip be it is slanting, it is so-called " oblique " to be
Refer to that the normal of inner surface does not intersect with the central axis of puncture tip 1.The instrument of insertion and the slanting inner surface at interior tip support
After connecing, with continuing into for instrument, instrument can slide on slanting inner surface, promote interior tip and then promote puncture tip
1 with shaft 12 is axis and is rotated.One shaft 12 is located at the inner surface of an arm 11, another shaft 12 is located at another arm 11
Inner surface, two shafts 12 are the stud bump to extend internally, and shaft 12 perpendicular to the transversal of its extending direction
Face is ellipse, i.e., shaft 12 is elliptical cylinder-shape protrusion.Also, original state (including centreless puncture outfit unused state and under
First state in text) when, the centerline axis parallel of the long axis and casing 2 in 12 elliptical periphery face of shaft."inner" refers to court
To the direction of the central axis of puncture tip 1, "outside" refers to the direction of the central axis far from puncture tip 1.
Puncture tip 1 is pivotally attached with casing 2.
Specifically, as shown in Figures 2 and 3, the part of the outer peripheral surface of the first end 21 of casing 2 is plane, and the plane is
Mating surface, two mating surfaces are symmetrically disposed on the both ends of the diameter of the outer peripheral surface of the first end 21 of casing 2.Two mating surface difference
With accommodation groove 211, two accommodation grooves 211 are symmetrical arranged.As shown in figure 5, the top of accommodation groove 211 has the first width W1,
There is the second width W2, the second width W2 to be greater than the first width W1 for lower part.First width W1 is slightly larger than 12 elliptical periphery of shaft
The length of the length of the short axle in face and the long axis less than elliptical periphery face, allows the top of accommodation groove 211 to accommodate shaft
12, while will limit rotation of the shaft 12 in the top of accommodation groove 211.Second width W2 is greater than 12 elliptical periphery face of shaft
The length of long axis, therefore, the lower part of accommodation groove 211 can accommodate shaft 12, while allow shaft 12 in the lower part of accommodation groove 211
Interior rotation."upper" refers to that the direction towards seal assembly 3, "lower" refer to the direction towards puncture tip 1.
Connection structure for centreless puncture outfit 100 includes: mating surface, accommodation groove 211 and shaft 12.
During centreless puncture outfit use, there are three types of states for the tool of puncture tip 1:
It is located in the top of accommodation groove 211 in the shaft 12 of first state, puncture tip 1, due to the top of accommodation groove 211
Limitation for shaft 12, puncture tip 1 cannot be rotated relative to casing 2.At this point, being kept altogether between puncture tip 1 and casing 2
The central axis of line, the i.e. central axis with casing 2 of puncture tip 1 is overlapped.It is that puncture tip 1 is applied by abdominal wall, with
The opposite power of direction of travel promotes the shaft 12 of puncture tip 1 to be maintained in the top of accommodation groove 211 in puncture process.
It stretches out when instrument insertion casing 2 and from first end 21, is abutted with the slanting inner surface at the interior tip of puncture tip 1
Afterwards, the abutting of the limitation due to the top of accommodation groove 211 for shaft 12, instrument and slanting inner surface will not make puncture tip
1 rotation of end, continuing into for instrument will push interior tip decline so that puncture tip 1 moves down, so that shaft
12 are moved to the lower part of accommodation groove 211 by the top of accommodation groove 211.At this point, puncture tip 1 is in the second state, it can turn
Dynamic state.As shown in Figure 2.
With being further inserted into for instrument, instrument can slide on slanting inner surface, promote interior tip so that puncturing
Tip 1 is with shaft 12 is axis and is rotated.Puncture tip 1 after rotation is in the third state, as shown in Figure 1.At this point, casing 2
First end 21 is turned on completely.
Puncturing hole with the extraction of centreless puncture outfit 100, on the outer surface and patient body at the outer tip of puncture tip 1
Hole wall be in contact, it is generated make every effort to promote so that puncture tip 1 is generated rotation so that puncture tip 1 and casing 2 are conllinear, by
The third state is back to the second state, at this time can successively extract casing 2, puncture tip 1 out of patient's body lumen, realizes that centreless is worn
Pierce the separation of device 100 and patient body.
It is connected due to using shaft 12 between puncture tip 1 and casing 2, connection structure needs overcome during rotation
Resistance it is smaller, thus the rotation of puncture tip is more flexible.Also, due to the restriction effect of accommodation groove 211, puncture tip 1 exists
Undesirable rotation is not had before 100 use of centreless puncture outfit and under first state.
Claims (12)
1. a kind of connection structure for centreless puncture outfit, the centreless puncture outfit includes casing and puncture tip, and feature exists
In described sleeve pipe includes accommodation groove, and the puncture tip includes shaft；The connection structure includes the accommodation groove and described turn
Axis；The accommodation groove is for accommodating the shaft, also, the accommodation groove accommodates the shaft so that puncture tip has the
One state and the second state.
2. being used for the connection structure of centreless puncture outfit as described in claim 1, which is characterized in that described sleeve pipe further comprises
Mating surface, the connection structure also further comprise the mating surface, and the accommodation groove is set to the mating surface.
3. being used for the connection structure of centreless puncture outfit as claimed in claim 2, which is characterized in that the mating surface is plane.
4. being used for the connection structure of centreless puncture outfit as described in claim 1, which is characterized in that in said first condition,
Keep conllinear between the puncture tip and described sleeve pipe, the puncture tip is not able to rotate relative to described sleeve pipe.
5. being used for the connection structure of centreless puncture outfit as described in claim 1, which is characterized in that in said second condition,
The puncture tip is allowed to rotate relative to described sleeve pipe.
6. such as the described in any item connection structures for centreless puncture outfit of claim 1,4,5, which is characterized in that the accommodating
Slot, which includes first and second, described first and described second, can accommodate the shaft；Described first has the
One width, described second has the second width；The outer peripheral surface of the shaft is ellipse, and first width is greater than the ellipse
Short axle length and be less than the elliptical long axis length, second width be greater than the elliptical long axis length.
7. being used for the connection structure of centreless puncture outfit as claimed in claim 6, which is characterized in that described first is top,
Described second is lower part.
8. being used for the connection structure of centreless puncture outfit as described in claim 1, which is characterized in that the puncture tip is further
Including the first tip, first tip has slanting inner surface.
9. being used for the connection structure of centreless puncture outfit as claimed in claim 8, which is characterized in that the puncture tip is further
Including the second tip, first tip is parallel with second tip.
10. being used for the connection structure of centreless puncture outfit as claimed in claim 9, which is characterized in that first tip is interior
Tip, second tip are outer tip.
11. being used for the connection structure of centreless puncture outfit as claimed in claim 10, which is characterized in that the interior tip and described
Outer tip includes two support arms, the support arm intersection of two of the interior tip, the support arm phase of two of the outer tip
It hands over.
12. as claimed in claim 10 be used for centreless puncture outfit connection structure, which is characterized in that the interior tip with it is described
Outer tip forms two arms after crossing；The quantity of the shaft is two, on the inner surface of each arm described in setting one
Shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017109525969 | 2017-10-12 | ||
| CN201710952596 | 2017-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109646085A true CN109646085A (en) | 2019-04-19 |
Family
ID=66109276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711468698.XA Withdrawn CN109646085A (en) | 2017-10-12 | 2017-12-28 | A kind of connection structure for centreless puncture outfit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109646085A (en) |
-
2017
- 2017-12-28 CN CN201711468698.XA patent/CN109646085A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190419 |