CN106166082B - From retraction puncture outfit - Google Patents
From retraction puncture outfit Download PDFInfo
- Publication number
- CN106166082B CN106166082B CN201610727325.9A CN201610727325A CN106166082B CN 106166082 B CN106166082 B CN 106166082B CN 201610727325 A CN201610727325 A CN 201610727325A CN 106166082 B CN106166082 B CN 106166082B
- Authority
- CN
- China
- Prior art keywords
- elastomer
- supporter
- needle
- telescopic rod
- limiting device
- 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.)
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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
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
- A61B17/3496—Protecting sleeves or inner probes; Retractable tips
-
- 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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/0034—Surgical instruments, devices or methods, e.g. tourniquets 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
-
- 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
- A61B2017/3445—Cannulas used as instrument channel for multiple instruments
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to medical instruments fields, more particularly to a kind of retraction puncture outfit certainly.It includes needle sleeve, piercing needle and telescopic rod, limiting device, elastomer and supporter in needle sleeve；Telescopic rod top is pierced by needle sleeve, and its underpart is vertically distributed with elastomer fixing piece and flexible locating part, return spring is cased on the telescopic rod between needle sleeve top and elastomer fixing piece；The elastomer fixing piece outer edge is connect with elastomer upper end, and elastomer lower end is connect with supporter upper end；Hollow cavity is set in the limiting device, periphery is equipped with a groove around setting, and in a groove, piercing needle upper end is fixedly connected supporter lower end card with limiting device bottom.For the present invention by improving the needle head structure of puncture outfit, can penetrate tissue moment in syringe needle in syringe needle retraction pipe, will effectively avoid the extension of syringe needle inertia from causing organ by needlestick injuries, improves success rate of operation, reduces postoperative complications.
Description
Technical field
The present invention relates to medical instruments field more particularly to a kind of syringe needle energy automatic retracteds, will not puncture returning certainly for internal organ
Contracting puncture outfit.
Background technology
Puncture outfit is the common instrument for establishing operation path, observing channel in endoscopic surgery.Existing puncture outfit
Mostly by fixed sleeving and puncture inner core form, puncture inner core in syringe needle all can not automatic retracted, puncture complete
Moment causes malpractice since the inertia of operator forward firmly is easy to cause needle point and punctures internal internal organs.
Invention content
To solve the above problems, the present invention provides a kind of skin histology moment automatic drawing back syringe needle can be penetrated in syringe needle
From retraction puncture outfit, damage intracorporeal organ can be effectively prevent.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of retraction puncture outfit, including needle sleeve, piercing needle and the telescopic rod in needle sleeve certainly, telescopic rod
Top is pierced by needle sleeve, for pressing indentor point；Further include limiting device, elastomer and the supporter being located in needle sleeve；
Elastomer fixing piece and flexible locating part is vertically distributed in telescopic rod lower part, between needle sleeve top and elastomer fixing piece
Telescopic rod on be cased with return spring；The elastomer fixing piece outer edge is connect with elastomer upper end, elastomer lower end and branch
Support body upper end connects；A hollow cavity for accommodating flexible locating part is set in the limiting device, in telescopic rod
Locating part is stretched to limit the stroke of telescopic rod by limitation when lower mobile；Limiting device periphery is equipped with one around the recessed of setting
Slot, in a groove, vertical section and the horizontal plane of supporter have certain angle to supporter lower end card；Piercing needle upper end is filled with limit
Bottom set portion is fixedly connected.
The action principle of above-mentioned apparatus is as follows：
Non-piercing state, piercing needle are constantly under the action of return spring in casing above telescopic rod.When puncture,
Instantaneous depression telescopic rod, piercing needle is released, when piercing needle penetrates tissue, by upward resistance, limiting device
By a upward thrust, under thrust, groove on the outside of limiting device and the clamping of supporter lower end, and by supporter
Upper end is withstood on set tube wall, under pressure effect, frictional force is will produce between supporter and tube wall, prevents supporter end
It is mobile, syringe needle can be prevented to bounce back under drag effect in this way.Due to generate frictional force horizontal pressure force from piercing needle to
The resistance being subject to when tissue is advanced into, therefore piercing needle loses upward resistance, supporter when tissue is pierced
Corresponding horizontal component also disappears, to which corresponding frictional force disappears, while to telescopic rod apply thrust and syringe needle by
Elastomer deforms upon when resistance, and after syringe needle enters human body, resistance and thrust disappear, and deformation will restore, and when recovery, will support
One end of body is pulled upwardly, and is detached from tube wall.Telescopic rod is constantly subjected to upward pulling force under return spring effect, in its effect
Under, entire piercing needle is retracted in casing, is played a protective role.
Preferably, the supporter is an inversed taper platform shape thin slice, and elastomer is a taper type elastic piece, and the two is looped around
Limiting device surrounding, supporter lower edge are located in the groove on the outside of limiting device, and top edge is connect simultaneously with elastomer lower edge
It is contacted with needle sleeve inner wall.
Preferably, the supporter is several supporting rods being radially arranged, and each supporting rod is correspondingly connected with one
Resilient strip, supporting rod inner end are located in the groove on the outside of limiting device, and by groove limit and power transmission, outer end connects with elastomer end
It connects and is contacted with needle sleeve inner wall.
Further, the size of the opening of the limiting device hollow cavity is less than the size of flexible locating part.In return
When pulling up telescopic rod under spring effect, prevent telescopic rod from deviating from from limiting device.
Further, the elastomer fixing piece on telescopic rod is discoid, and the locating part that stretches is discoid or with arc-shaped
The strip of outer rim.Elastomer fixing piece is used for fixing elastomer, to ensure that uniform force application, elastomer will be uniformly distributed in entire circle
Week, therefore need to ensure that fixing piece is circle, convenient for fixed elastomer.And flexible locating part is only used for preventing telescopic rod from filling from limit
Middle abjection is set, therefore volume can be reduced, is in strip, the cost and weight of puncture outfit can be reduced.
The present invention can penetrate tissue moment by syringe needle retraction pipe by the needle head structure of improvement puncture outfit in syringe needle
It is interior, it effectively avoids the extension of syringe needle inertia from causing organ by needlestick injuries, improves success rate of operation, reduce postoperative complications.
Description of the drawings
Fig. 1 is that 1 piercing needle of the embodiment of the present invention stretches out state schematic cross-sectional view；
Fig. 2 is 1 piercing needle retracted mode schematic cross-sectional view of the embodiment of the present invention；
Fig. 3 is 1 elastomer of the embodiment of the present invention and supporter attachment structure schematic diagram；
Fig. 4 is 2 elastomer of the embodiment of the present invention, supporter and elastomer fixing piece connection knot
Structure schematic diagram；
Fig. 5 is the structural schematic diagram of telescopic rod in embodiment 1,2；
Fig. 6 is the structural schematic diagram of telescopic rod in embodiment 3；
In figure, 1, return spring, 2, needle sleeve, 3, telescopic rod, 4, elastomer fixing piece, 5, elastomer, 6, flexible limit
Position part, 7, supporter, 8, piercing needle, 9, hollow cavity, 10, limiting device, 11, groove.
Specific implementation mode
The implementation of the present invention is described in detail with reference to the accompanying drawings and examples.
Embodiment 1
It is a kind of from retraction puncture outfit, as shown in Fig. 1,2,3,5, including cylindrical needle head casing tube 2 and in needle sleeve
Piercing needle 8, limiting device 10, telescopic rod 3, elastomer 5 and supporter 7.3 top of telescopic rod is pierced by needle sleeve 2, under
Elastomer fixing piece 4 and flexible locating part 6 is vertically distributed in portion, and elastomer fixing piece 4 and flexible locating part 6 are to be sleeved on to stretch
On contracting bar and with the integrally formed disk of telescopic rod, it is cased on the telescopic rod at the top of needle sleeve between elastomer fixing piece
Return spring 1.The limiting device 10 is a cylinder, inside sets hollow cavity 9, cylinder lower outside be provided with round it is recessed
Slot 11, bottom are connect with the top of piercing needle 8.The supporter 7 is an inversed taper platform shape thin slice, and lower edge is located at limit
In groove 11 on the outside of the device of position, it is arranged around limiting device, the elastomer 5 is a taper type elastic piece, elastomer 5
Lower edge is connect with the top edge of supporter 7, and the two junction is contacted with needle sleeve tube wall.The top edge of elastomer 5 and bullet
Property body fixing piece 4 outer edge connection.The lower end of telescopic rod 3 and flexible locating part 6 are located in the hollow cavity 9 of limiting device,
Hollow cavity top opening size is less than the size of flexible locating part, prevents it from deviating from from cavity, plays position-limiting action.
Embodiment 2
A kind of from retraction puncture outfit, concrete structure is with embodiment 1, as shown in figure 4, being a difference in that supporter 7 is in spoke
Several supporting rods of shape distribution are penetrated, elastomer 5 is also using several resilient strips being arranged in a one-to-one correspondence with supporter.
Embodiment 3
A kind of retraction puncture outfit certainly, concrete structure is with embodiment 1, as shown in fig. 6, being a difference in that the elasticity on telescopic rod
Body fixing piece 4 is discoid, and the locating part 6 that stretches is the strip with arc-shaped outer rim.
The mechanism of above-described embodiment is as follows：
When puncture, instantaneous depression telescopic rod releases piercing needle, when piercing needle penetrates tissue, by upward
Resistance, limiting device is by a upward thrust, under thrust, groove on the outside of limiting device and supporter lower end
Clamping, and supporter upper end is withstood on set tube wall, under pressure effect, friction is will produce between supporter and tube wall
Power prevents supporter end from moving, syringe needle can be prevented to bounce back under drag effect in this way.Syringe needle penetrates people in the case where pressing force effect
Body tissue.The resistance that horizontal pressure force due to generating frictional force is subject to when moving forward into tissue from piercing needle, therefore
When tissue is pierced, piercing needle loses upward resistance, and the corresponding horizontal component of supporter also disappears, to corresponding
Frictional force disappear.And due to when applying thrust and syringe needle by resistance to telescopic rod elastomer deformation has occurred, in needle
After head enters human body, when elastomer restores deformation, one end of supporter is pulled upwardly, is detached from tube wall.Telescopic rod is in return bullet
It is constantly subjected to upward pulling force under spring effect, under its effect, entire piercing needle is retracted in casing, is played a protective role.
Claims (5)
1. a kind of from retraction puncture outfit, including needle sleeve (2), piercing needle (8) and the telescopic rod in needle sleeve
(3), telescopic rod (3) top is pierced by needle sleeve (2), for pressing indentor point；It is characterized in that：Further include being located in needle sleeve
Limiting device (10), elastomer (5) and supporter (7)；Elastomer fixing piece (4) is vertically distributed in telescopic rod (3) lower part
With flexible locating part (6), return spring (1) is cased on the telescopic rod between needle sleeve top and elastomer fixing piece；It is described
Elastomer fixing piece (4) outer edge is connect with elastomer (5) upper end, and elastomer (5) lower end is connect with supporter (7) upper end；Institute
A hollow cavity (9) for accommodating flexible locating part is set in the limiting device (10) stated, for when telescopic rod moves up and down
Locating part is stretched by limitation to limit the stroke of telescopic rod；Limiting device (10) periphery is equipped with a groove around setting
(11), supporter (7) lower end is stuck in groove (11), and vertical section and the horizontal plane of supporter have certain angle；Piercing needle (8)
Upper end is fixedly connected with limiting device (10) bottom.
2. according to claim 1 from retraction puncture outfit, it is characterised in that：The supporter (7) is an inversed taper platform shape
Thin slice, elastomer (5) are a taper type elastic piece, and the two is looped around limiting device surrounding, and supporter (7) lower edge is located at limit
In groove (11) on the outside of device, top edge connects with elastomer lower edge and is contacted with needle sleeve inner wall.
3. according to claim 1 from retraction puncture outfit, it is characterised in that：The supporter (7) is radially to set
Several supporting rods set, each supporting rod are correspondingly connected with a resilient strip, and supporting rod inner end is located at the groove on the outside of limiting device
In, by groove limit and power transmission, outer end connects with elastomer end and is contacted with needle sleeve inner wall.
4. according to claim 2 or 3 from retraction puncture outfit, it is characterised in that：The limiting device hollow cavity
The size of opening is less than the size of flexible locating part.
5. according to claim 2 or 3 from retraction puncture outfit, it is characterised in that：Elastomer fixing piece (4) on telescopic rod
It is discoid, the locating part (6) that stretches is discoid or with arc-shaped outer rim strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610727325.9A CN106166082B (en) | 2016-08-26 | 2016-08-26 | From retraction puncture outfit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610727325.9A CN106166082B (en) | 2016-08-26 | 2016-08-26 | From retraction puncture outfit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106166082A CN106166082A (en) | 2016-11-30 |
| CN106166082B true CN106166082B (en) | 2018-08-17 |
Family
ID=57375967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610727325.9A Active CN106166082B (en) | 2016-08-26 | 2016-08-26 | From retraction puncture outfit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106166082B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109984820B (en) * | 2017-12-31 | 2021-08-06 | 江苏风和医疗器材股份有限公司 | Coreless puncture outfit |
| CN109984816A (en) * | 2017-12-31 | 2019-07-09 | 江苏风和医疗器材股份有限公司 | A kind of centreless puncture outfit |
| CN110478010B (en) * | 2019-09-23 | 2020-12-15 | 常州安康医疗器械有限公司 | Peritoneoscope puncture instrument protection device |
| CN113749738B (en) * | 2021-08-05 | 2023-02-03 | 温州医科大学附属第二医院（温州医科大学附属育英儿童医院） | Puncture outfit for cardiothoracic surgery |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5158552A (en) * | 1991-11-04 | 1992-10-27 | American Cyanamid Company | Safety trocar instrument having a retractable trocar actuated by relief of pressure on the trocar point |
| AU671266B2 (en) * | 1991-11-27 | 1996-08-22 | Inbae Yoon | Retractable safety penetrating instrument for portal sleeve introduction |
| US5346459A (en) * | 1993-04-14 | 1994-09-13 | Minnesota Mining And Manufacturing Company | Trocar |
| AU7727194A (en) * | 1993-09-07 | 1995-03-27 | Invamed, Inc. | Safety shielded, reusable trocar |
| CN2621616Y (en) * | 2003-05-27 | 2004-06-30 | 王华林 | Puncture needle having protection |
| CN2669889Y (en) * | 2003-11-25 | 2005-01-12 | 牛甲民 | Self-positioning safety puncture needle |
| US8317812B2 (en) * | 2009-07-29 | 2012-11-27 | Wah Leong Lum | Lancet device with lance retraction |
| CN102283695A (en) * | 2011-06-24 | 2011-12-21 | 刘晓磊 | Retraction type laparoscope puncture device |
-
2016
- 2016-08-26 CN CN201610727325.9A patent/CN106166082B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106166082A (en) | 2016-11-30 |
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