CN106821471B - A kind of cricothyroid membrane puncturing and ventilating device - Google Patents
A kind of cricothyroid membrane puncturing and ventilating device Download PDFInfo
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- CN106821471B CN106821471B CN201710223426.7A CN201710223426A CN106821471B CN 106821471 B CN106821471 B CN 106821471B CN 201710223426 A CN201710223426 A CN 201710223426A CN 106821471 B CN106821471 B CN 106821471B
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- Prior art keywords
- puncture needle
- tube
- ventilating device
- outer tube
- cricothyroid membrane
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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
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
-
- 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
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0402—Special features for tracheal tubes not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/02—Holding devices, e.g. on the body
- A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Surgery (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pathology (AREA)
- Gastroenterology & Hepatology (AREA)
- Emergency Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of cricothyroid membrane puncturing and ventilating device, and it includes puncture needle, connecting tube and fixator；Puncture needle includes puncture needle outer tube and the rigid nook closing member being provided at its inner portion, the casing main body of puncture needle outer tube is flexible nonmetallic tubing, it is bent to form pigtail bending in its natural state, rigid nook closing member, which is arranged in the puncture needle outer tube, makes it keep its straight state, and the mouth of pipe of connecting tube is used to be connected with lung ventilator.The present invention is coordinated by the nook closing member of nonmetallic puncture needle outer tube and stainless steel, makes puncture needle that the solid needle body of penholder shape be integrally formed, and puncture that can quickly, directly, stable in puncture process avoids puncture needle from causing the unnecessary damage of air flue in place.When extracting nook closing member out, the rapid natural torsion of puncture needle outer tube, pigtail bending as depicted is formed, whole puncture needle outer tube can be made to be stably fixed in air flue, avoid slipping, avoid blocking, ventilation is smooth, attracts fully, to be adapted to a variety of different air flues.
Description
Technical field
The present invention relates to medical first aid apparatus, and in particular to a kind of cricothyroid membrane puncturing and ventilating device.
Background technology
Thyrocricocentesis can release live incidence damage and cause airway obstruction to cause asphyxia and the edema of the larynx, airway obstruction
Deng Upper respiratory tract obstruction, respiratory passage unblocked is kept, improves patient's anoxic conditions, is emergency processing asphyxia, rescue life is simple and direct, has
The important first-aid method of effect, there is very important practical value.
At present, cricothyroid membrane puncture needle there is it is more the defects of, the China such as Patent No. 201420052407.4 is practical
Cricothyroid membrane puncture needle group set disclosed in new patent, however it remains following defect：1st, easily there is depth during puncture needle indwelling
Constantly change, less stable；2nd, the complicated integral structure of puncture needle, the lancet puncture operation difficulty of bending are big；3rd, can not
Avoid reusing, cross-infection easily occur；4th, fixture structure is simple, it is fixed after fastness, stability and comfortable
Property is poor.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of cricothyroid membrane puncturing and ventilating device.
To solve the above problems, the technical solution used in the present invention is：
A kind of cricothyroid membrane puncturing and ventilating device, its key technology are：It includes puncture needle, connecting tube and fixator；
The puncture needle includes puncture needle outer tube and the rigid nook closing member being provided at its inner portion, the puncture needle outer tube
From top to bottom include socket part, ferrule boot, casing main body and the sleeve pipe tip being linked in sequence, the socket part, ferrule boot
It is made with sleeve pipe tip of hard non-metallic material, the end of described sleeve pipe main body is provided with more than one passage,
Described sleeve pipe main body is flexible nonmetallic tubing, and it is bent to form pigtail bending in its natural state, and the rigid nook closing member is arranged on
It is set to keep its straight state in the puncture needle outer tube；
The connecting tube includes columnar tube body, is arranged on the funnelform bottom of the tube of the tube body bottom and sets
Put and be provided with and connect for the connector that is connected with the socket part, the side wall of the connecting tube in the bottom of the tube end
The injection catheter of UNICOM inside pipe, the mouth of pipe of the connecting tube are used to be connected with lung ventilator；
It is described solid that the fixator includes fixed plate, the two-sided colloid of sponge for being arranged at the fixed plate bottom surface and connection
The connecting plate of fixed board and tube body.
As a further improvement on the present invention, shaped metal wire built in described sleeve pipe main body, makes it curved in its natural state
It is curved to be bent into pigtail.
As a further improvement on the present invention, the socket part, ferrule boot and sleeve pipe tip use rigid plastics system
Into the rigid nook closing member is made of stainless steel.
As a further improvement on the present invention, the funnelform bottom of the tube of the tube body bottom is the elasticity of easy deformation
Body.
As a further improvement on the present invention, the bottom of the tube includes the jut positioned at outside and the depression positioned at inner side
Portion, the jut are connected with tube body sealed bottom, and jut and depressed part transition and linkage, depressed part shrink the bottom to be formed
Circular hole is tightly connected with the connector, and jut and depressed part the global sections shape is S-shaped.
As a further improvement on the present invention, the funnelform bottom of the tube is arranged at intervals with multiple concentric circular
Elastic joint part.
As a further improvement on the present invention, the section configuration of the elastic joint part is S-shaped.
As a further improvement on the present invention, the fixed plate includes median rise portion and is arranged on the median rise portion
The end at both ends, the two-sided colloid of sponge is included positioned at the colloid end at both ends and positioned at the intermediate recess portion of centre, described
Colloid end is glued with the end, and the intermediate recess portion is glued with the median rise portion, the intermediate recess portion and institute
Stating median rise portion makes the middle part of the fixator form the bridge-like structure being adapted with human body throat.
As a further improvement on the present invention, connector and vessel clamp are provided with the injection catheter.
It is using beneficial effect caused by above-mentioned technical proposal：
The present invention is coordinated by the nook closing member of nonmetallic puncture needle outer tube and stainless steel, and puncture needle is integrally formed
The solid needle body of penholder shape, puncture that can quickly, directly, stable in puncture process avoid puncture needle from causing air flue in place
Unnecessary damage.When extracting nook closing member out, the rapid natural torsion of puncture needle outer tube, pigtail bending as depicted is formed, can
Whole puncture needle outer tube is stably fixed in air flue, avoid slipping, avoid blocking, ventilation is smooth, attracts fully, to be adapted to
A variety of different air flues.
The present invention connects lung ventilator by connecting tube one end connecting puncture needle, one end, and the administration that connecting tube side wall is set is led
Pipe can give air flue injection of medicine at any time, easy to use.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the structural representation of puncture needle of the present invention.
Fig. 3 is the cross section structure diagram of puncture needle of the present invention.
Fig. 4 is the case of bending structural representation of puncture needle outer tube of the present invention.
Fig. 5 is the structural representation of fixator of the present invention.
Fig. 6 is the using state structure diagram of the present invention.
Fig. 7 is the structural representation of another embodiment of connecting tube of the present invention.
Fig. 8 is the half section structure diagram of the bottom of the tube of connecting tube of the present invention.
Fig. 9 is the partial enlargement structural representation in A portions in Fig. 8.
Figure 10 is the present invention looks up structural representation of the bottom of the tube of connecting tube of the present invention.
Wherein：1 puncture needle, 1-1 ferrule boots, 1-2 casing main bodies, 1-3 sleeve pipes tip, 1-4 passages, 1-5 socket parts,
1-6 nook closing members, the bending of 1-7 pigtails, 1-8 sealed membranes, 1-9 puncture needles outer tube, 2 connecting tubes, 2-1 tube bodies, 2-2 bottom of the tube, 2-
2-1, jut, 2-2-2 depressed parts, 2-2-3 elastic joint parts, 2-3 connectors, 2-4 injection catheters, 2-5 connectors, 2-6 are led
Pipe clamp, 3 fixators, 3-1 fixed plates, 3-1-1 ends, 3-1-2 median rises portion, the two-sided colloid of 3-2 sponges, 3-2-1 colloids end
Portion, 3-2-2 intermediate recess portion, 3-3 connecting plates.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings with specific embodiment to hair
It is bright to carry out clear, complete description.
A kind of cricothyroid membrane puncturing and ventilating device as shown in Figure 1, it includes puncture needle 1, connecting tube 2 and fixator 3.Specifically
, the puncture needle 1 includes puncture needle outer tube 1-9 and the rigid nook closing member 1-6 being provided at its inner portion, the puncture needle overcoat
Pipe 1-9 from top to bottom includes socket part 1-5, ferrule boot 1-1, casing main body 1-2 and the sleeve pipe tip 1-3 being linked in sequence, institute
State socket part 1-5, ferrule boot 1-1 and sleeve pipe tip 1-3 be made of hard non-metallic material, socket part 1-5 be used for
The airtight connection of connecting tube 2, ferrule boot 1-1 is placed in the tissue of human body after puncture is fixed, therefore keeps its solid form, is adopted
With hard material, described sleeve pipe tip 1-3 plays main diapirism in puncture process, therefore also uses hard material.
Described sleeve pipe main body 1-2 end is provided with more than one passage 1-4, as shown in Fig. 2 the passage 1-4 intervals are set
Put, have certain displacement in axial direction and ring, both can guarantee that ventilation is smooth, can also ensure that casing main body 1-2 structure is steady
It is qualitative.
Described sleeve pipe main body 1-2 is flexible nonmetallic tubing, shaped metal wire built in described sleeve pipe main body 1-2, makes it in nature
Pigtail bending 1-7 is bent to form under state, as shown in Figure 4 and Figure 6.As shown in Figures 2 and 3, the rigid nook closing member 1-6 is arranged on
It is set to keep its straight state in the puncture needle outer tube 1-9；The socket part 1-5, ferrule boot 1-1 and sleeve pipe tip 1-3
It is made of rigid plastics, the rigid nook closing member 1-6 is made of stainless steel, after the completion of puncture, when extracting nook closing member 1-6 out,
The rapid natural torsions of casing main body 1-2 of puncture needle outer tube, pigtail bending 1-7 as shown in figs. 4 and 6 is formed, can be made whole
Individual puncture needle outer tube is stably fixed in air flue, avoids slipping, and avoids blocking, and ventilation is smooth, attracts fully, to be adapted to a variety of
Different air flues.
Disposable sealed membrane 1-8 is provided with the top of the socket part 1-5, nook closing member 1-6 can be enclosed in outside puncture needle
In sleeve pipe 1-9, facilitate puncture procedure, and the secondary use of puncture needle can be avoided, avoid cross-infection.
The connecting tube 2 includes columnar tube body 2-1, is arranged on the funnelform pipe of the tube body 2-1 bottoms
Bottom 2-2 be arranged on the bottom of the tube 2-2 ends for the connector 2-3 that is connected with the socket part 1-5, the connection
The side wall of pipe 2 is provided with the injection catheter 2-4 with the inside UNICOM of connecting tube 2, and the mouth of pipe of the connecting tube 2 is used to connect with lung ventilator
Connect；The columnar tube body 2-1 has internal die cavity, forms medicine and the transfer area of gas and buffering area.The injection
Connector 2-5 and vessel clamp 2-6 are provided with conduit 2-4, connector 2-5 is used to connect with syringe, and vessel clamp 2-6 is used to close
Close injection catheter 2-4.
The funnelform bottom of the tube 2-2 of the tube body 2-1 bottoms is the elastomer of easy deformation, specifically, it can be used
Silica gel material is made, and when breathing and having action, can play cushioning effect, and puncture needle outer tube 1-9 can be made stable
It is not affected, avoids coming off and blocking for puncture needle outer tube 1-9, ensures that ventilation is smooth, avoid causing the damage of air flue.
As shown in fig. 7, the bottom of the tube 2-2 includes the jut 2-2-1 and the depressed part 2- positioned at inner side positioned at outside
2-2, the jut 2-2-1 are connected with tube body 2-1 sealed bottoms, jut 2-2-1 and depressed part 2-2-2 transition and linkages,
Depressed part 2-2-2 shrinks the bottom circular aperture to be formed and is tightly connected with the connector 2-3, the jut 2-2-1 and depressed part
2-2-2 global sections shapes are S-shaped, and jut 2-2-1 and depressed part 2-2-2 use elastic silica gel material, can make whole
Connecting tube 2 has the deformation elasticity with left and right up and down, and flexibility is high, avoids affecting when breathing and action and inserts air flue
Puncture needle outer tube 1-9.
Such as Fig. 7, as a further improvement, an injection catheter is respectively arranged with left and right sides of the tube body 2-1
2-4, for injecting different medicines simultaneously, both sides set a fixator 3 respectively, enable devices to more be firmly fixed.
As seen in figs. 8-10, as a further improvement, the funnelform bottom of the tube 2-2 is arranged at intervals with multiple concentric
Circular elastic joint part 2-2-3, the section configuration of the elastic joint part 2-2-3 is S-shaped.The elastic joint part 2-
2-3 uses elastic silica gel material, and said structure can make whole bottom of the tube 2-2 have a good elastic effect, and deformation amplitude is big.
As described in figures 1 and 5, the fixator 3 includes fixed plate 3-1, is arranged at the sponge pair of the fixed plate 3-1 bottom surfaces
Face colloid 3-2 and the connection fixed plate 3-1 and tube body 2-1 connecting plate 3-3, connecting plate 3-3 is elastomer.It is described solid
Fixed board 3-1 includes median rise portion 3-1-2 and is arranged on the end 3-1-1 at the median rise portion 3-1-2 both ends, the sponge
Two-sided colloid 3-2 includes the colloid end 3-2-1 and the intermediate recess portion 3-2-2 positioned at centre positioned at both ends, the colloid end
The portion 3-2-1 and end 3-1-1 is glued, and the intermediate recess portion 3-2-2 and median rise portion 3-1-2 is glued, described
Intermediate recess portion 3-2-2 makes the middle part of the fixator 3 form what is be adapted with human body throat with the median rise portion 3-1-2
Bridge-like structure, it can be good at being bonded with the throat of human body, improve the stability and comfort level of fixator.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in previous embodiment, or equivalent substitution is carried out to which part technical characteristic；And
These modifications are replaced, and the essence of appropriate technical solution is departed from the spirit and model of technical scheme of the embodiment of the present invention
Enclose.
Claims (9)
- A kind of 1. cricothyroid membrane puncturing and ventilating device, it is characterised in that：It includes puncture needle（1）, connecting tube（2）And fixator（3）；The puncture needle（1）Including puncture needle outer tube（1-9）With the rigid nook closing member being provided at its inner portion（1-6）, it is described to wear Pricker outer tube（1-9）From top to bottom include the socket part being linked in sequence（1-5）, ferrule boot（1-1）, casing main body（1-2） With sleeve pipe tip（1-3）, the socket part（1-5）, ferrule boot（1-1）With sleeve pipe tip（1-3）It is nonmetallic using hard Material is made, described sleeve pipe main body（1-2）End be provided with more than one passage（1-4）, described sleeve pipe main body（1-2） For flexible nonmetallic tubing, it is bent to form pigtail bending in its natural state（1-7）, the rigid nook closing member（1-6）It is arranged on institute State puncture needle outer tube（1-9）It is inside set to keep its straight state；The connecting tube（2）Including columnar tube body（2-1）, be arranged on the tube body（2-1）Bottom it is funnelform Bottom of the tube（2-2）Be arranged on the bottom of the tube（2-2）End is used for and the socket part（1-5）The connector of connection（2- 3）, the connecting tube（2）Side wall be provided with and connecting tube（2）The injection catheter of internal UNICOM（2-4）, the connecting tube（2） The mouth of pipe be used for be connected with lung ventilator；The fixator（3）Including fixed plate（3-1）, be arranged at the fixed plate（3-1）The two-sided colloid of sponge of bottom surface（3-2） And the connection fixed plate（3-1）And tube body（2-1）Connecting plate（3-3）.
- A kind of 2. cricothyroid membrane puncturing and ventilating device according to claim 1, it is characterised in that：Described sleeve pipe main body（1-2） Built-in shaped metal wire, it is set to be bent to form pigtail bending in its natural state（1-7）.
- A kind of 3. cricothyroid membrane puncturing and ventilating device according to claim 1, it is characterised in that：The socket part（1-5）, set Pipe root（1-1）With sleeve pipe tip（1-3）It is made of rigid plastics, the rigid nook closing member（1-6）Using stainless steel Into.
- 4. according to a kind of cricothyroid membrane puncturing and ventilating device described in claim any one of 1-3, it is characterised in that：The tube body （2-1）The funnelform bottom of the tube of bottom（2-2）For the elastomer of easy deformation.
- A kind of 5. cricothyroid membrane puncturing and ventilating device according to claim 4, it is characterised in that：The bottom of the tube（2-2）Bag Include the jut positioned at outside（2-2-1）With the depressed part positioned at inner side（2-2-2）, the jut（2-2-1）With tube body （2-1）Sealed bottom connects, jut（2-2-1）And depressed part（2-2-2）Transition and linkage, depressed part（2-2-2）Shrink and formed Bottom circular aperture and the connector（2-3）It is tightly connected, the jut（2-2-1）And depressed part（2-2-2）Global sections Shape is S-shaped.
- A kind of 6. cricothyroid membrane puncturing and ventilating device according to claim 4, it is characterised in that：The funnelform bottom of the tube 2-2 is arranged at intervals with multiple concentric circular elastic joint parts（2-2-3）.
- A kind of 7. cricothyroid membrane puncturing and ventilating device according to claim 6, it is characterised in that：The elastic joint part（2- 2-3）Section configuration it is S-shaped.
- 8. according to a kind of cricothyroid membrane puncturing and ventilating device described in claim any one of 1-3, it is characterised in that：The fixed plate （3-1）Including median rise portion（3-1-2）Be arranged on the median rise portion（3-1-2）The end at both ends（3-1-1）, it is described The two-sided colloid of sponge（3-2）Including positioned at the colloid end at both ends（3-2-1）With positioned at centre intermediate recess portion（3-2-2）, The colloid end（3-2-1）With the end（3-1-1）It is glued, the intermediate recess portion（3-2-2）With the median rise Portion（3-1-2）It is glued, the intermediate recess portion（3-2-2）With the median rise portion（3-1-2）Make the fixator（3）In Portion forms the bridge-like structure being adapted with human body throat.
- 9. according to a kind of cricothyroid membrane puncturing and ventilating device described in claim any one of 1-3, it is characterised in that：The injection is led Pipe（2-4）On be provided with connector（2-5）And vessel clamp（2-6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710223426.7A CN106821471B (en) | 2017-04-07 | 2017-04-07 | A kind of cricothyroid membrane puncturing and ventilating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710223426.7A CN106821471B (en) | 2017-04-07 | 2017-04-07 | A kind of cricothyroid membrane puncturing and ventilating device |
Publications (2)
| Publication Number | Publication Date |
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| CN106821471A CN106821471A (en) | 2017-06-13 |
| CN106821471B true CN106821471B (en) | 2018-03-16 |
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| CN201710223426.7A Active CN106821471B (en) | 2017-04-07 | 2017-04-07 | A kind of cricothyroid membrane puncturing and ventilating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114191052B (en) * | 2022-01-18 | 2022-06-14 | 临沂市兴华医用器材有限公司 | Flexible reinforced anesthesia puncture kit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5509909A (en) * | 1994-10-06 | 1996-04-23 | Moy; Grant G. | Bent chest tube assembly |
| AU2003277157A1 (en) * | 2002-09-30 | 2004-04-23 | Damage Control Surgical Technologies, Inc. | Rapid deployment chest drainage |
| CN201299631Y (en) * | 2008-09-24 | 2009-09-02 | 深圳市宝安区人民医院 | Percutaneous intercricocentesis trocar |
| CN203677211U (en) * | 2014-01-27 | 2014-07-02 | 洛阳东方医院 | Cricothyroid membrane puncture needle set |
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2017
- 2017-04-07 CN CN201710223426.7A patent/CN106821471B/en active Active
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