CN212282468U - Anti-skid degassing catheter - Google Patents
Anti-skid degassing catheter Download PDFInfo
- Publication number
- CN212282468U CN212282468U CN202021419957.7U CN202021419957U CN212282468U CN 212282468 U CN212282468 U CN 212282468U CN 202021419957 U CN202021419957 U CN 202021419957U CN 212282468 U CN212282468 U CN 212282468U
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- Prior art keywords
- tracheal catheter
- ratchets
- wall
- catheter
- endotracheal tube
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- 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.)
- Expired - Fee Related
Links
- 238000007872 degassing Methods 0.000 title description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 7
- 210000003437 trachea Anatomy 0.000 claims description 12
- 210000004283 incisor Anatomy 0.000 claims description 9
- 206010049244 Ankyloglossia congenital Diseases 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000002627 tracheal intubation Methods 0.000 description 14
- 210000000214 mouth Anatomy 0.000 description 7
- 239000002390 adhesive tape Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011505 plaster Substances 0.000 description 4
- 210000002409 epiglottis Anatomy 0.000 description 2
- 210000004704 glottis Anatomy 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 206010003497 Asphyxia Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 208000003443 Unconsciousness Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003811 finger Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 210000005181 root of the tongue Anatomy 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The anti-slipping tracheal catheter comprises a tracheal catheter and an anti-slipping mechanism; the front end of the tracheal catheter is a connecting end of a breathing machine, the rear end of the tracheal catheter is an inserting end of an air passage, the outer wall of the front end of the tracheal catheter is provided with at least one row of ratchets extending along the axial direction, and the one row of ratchets comprises a plurality of ratchets arranged at intervals; the anti-skid mechanism comprises a positioning sleeve and a lacing; the positioning sleeve is provided with a through hole which is matched with the outer diameter of the tracheal catheter, the wall of the through hole is provided with a ratchet groove which is matched with the ratchet in shape, the positioning sleeve is arranged on the outer wall of the tracheal catheter through the through hole, and the unidirectional movement from the rear end of the tracheal catheter to the front end of the tracheal catheter can be realized through the structure that the ratchet groove is matched with the ratchet. The utility model has the advantages that, the position sleeve is installed back on endotracheal tube, makes anti-skidding mechanism can not slide to the endotracheal tube front end through ratchet groove and ratchet matched with structure, effectively avoids endotracheal tube to deviate from in following patient's air flue.
Description
Technical Field
The utility model relates to the field of medical equipment, especially a trachea catheter is taken off in antiskid.
Background
At present, during clinical operation anesthesia, one end of a tracheal catheter for breathing of a patient is connected with a breathing machine, and the other end of the tracheal catheter is inserted into an airway of the patient through an oral cavity. On the one hand, because the outer wall of the tracheal catheter and the inner wall of the airway of the patient are smooth curved surfaces, on the other hand, the risk that external force drags the tracheal catheter due to accidents exists, and the tracheal catheter is easy to slide after being placed (the sliding tube means the phenomenon that the tracheal catheter slides towards the outside of the airway), so that the tracheal catheter must be effectively fixed.
The current clinical mode of fixing endotracheal tubes is: after intubation, the tracheal catheter and the medical dental pad are stuck on the cheek of the patient in a crossing way by medical adhesive plaster.
This type of fixation has the following disadvantages:
1. because the adhesive plaster can only stick to the half-surface catheter, when the adhesive plaster is not good in viscosity, the oral secretion wets the adhesive plaster or an external force touches the tracheal catheter, the tracheal catheter is easy to be separated from the bite block, the phenomenon of tube slipping occurs, and then the patient is induced to lack oxygen;
2. the bite block can not completely wrap the tracheal cannula at the upper and lower teeth of the patient, so that the bite block can not play a role in preventing bite, and if the patient unconsciously bites the tracheal cannula closed in the operation, asphyxia is easy to occur;
3. the required parts of intubate (including endotracheal tube, bite-block, adhesive tape) relatively disperse, lose easily, and the intubate process is loaded down with trivial details, need tear the adhesive tape many times, twine fixed endotracheal tube and bite-block with the adhesive tape, bond the adhesive tape on patient's practises cheek, is difficult to satisfy the demand of quick intubate under the first aid condition.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, and provide a endotracheal tube is taken off in antiskid, it has solved present fixed endotracheal tube's mode clinically and has appeared the slide pipe easily, do not have and prevent stinging effect, intubate process loaded down with trivial details problem.
The technical scheme of the utility model is that: the anti-slipping tracheal catheter comprises a tracheal catheter and an anti-slipping mechanism;
the front end of the tracheal catheter is a connecting end of a breathing machine, the rear end of the tracheal catheter is an inserting end of an air passage, the outer wall of the front end of the tracheal catheter is provided with at least one row of ratchets extending along the axial direction, and the one row of ratchets comprises a plurality of ratchets arranged at intervals;
the anti-skid mechanism comprises a positioning sleeve and a lacing;
the positioning sleeve is formed by encircling and splicing a split body A and a split body B; the split A comprises a hard outer layer A and an elastic inner layer A fixedly connected to the inner side of the hard outer layer A, a retaining ring split A is arranged on the outer side of the hard outer shell A, and a lacing connecting ring A is arranged on the outer side of the retaining ring split A; the split B comprises a hard outer layer B and an elastic inner layer B fixedly connected to the inner side of the hard outer layer B, a retaining ring split B is arranged on the outer side of the hard outer shell B, and a lacing connecting ring B is arranged on the outer side of the retaining ring split B; when the split body A and the split body B are spliced to form the positioning sleeve in a surrounding manner, the elastic inner layer A of the split body A and the elastic inner layer B of the split body B form a through hole matched with the outer diameter of the tracheal catheter in a surrounding manner, and a ratchet groove matched with the ratchet in shape is arranged on the wall of the through hole; the baffle ring split body A and the baffle ring split body B are mutually spliced to form a front incisor baffle ring, and the frenum connecting ring A and the frenum connecting ring B are symmetrically distributed around the center line of the positioning sleeve;
when the positioning sleeve is arranged on the outer wall of the tracheal catheter, the positioning sleeve can only move in a single direction from the rear end of the tracheal catheter to the front end of the tracheal catheter through the structure that the ratchet grooves are matched with the ratchets;
two frenulums are respectively detachable to be connected on frenulum go-between A and frenulum go-between B of position sleeve.
The utility model discloses still further technical scheme is: the through hole is in transition fit with the tracheal catheter.
The utility model discloses still further technical scheme is: the outer wall of the front end of the tracheal catheter is provided with four axially extending guide grooves, and the four guide grooves are uniformly distributed on the outer wall of the tracheal catheter in an annular shape; correspondingly, four guide edges matched with the guide grooves are arranged on the wall of the through hole of the elastic inner sleeve.
The utility model discloses a further technical scheme is: the outer wall of the tracheal catheter is provided with four rows of ratchets which are uniformly distributed on the outer wall of the tracheal catheter in a ring shape, and one row of ratchets is arranged between every two adjacent guide grooves.
The utility model discloses a further technical scheme is: the outer wall of the front end of the tracheal catheter is provided with scales extending along the axial direction, and the division value of the scales is 5 mm; correspondingly, all the ratchets are arranged in the section where the scales at the front end of the tracheal catheter are located, and the tooth crest distance of adjacent ratchets in one row of ratchets is 5 mm.
The utility model discloses a further technical scheme is: the ratchet consists of a slow slope surface and a steep slope surface connected with the slow slope surface, the included angle formed by the slow slope surface and the axis of the trachea catheter is 5-20 degrees, and the included angle formed by the steep slope surface and the axis of the trachea catheter is 50-80 degrees.
The utility model discloses a further technical scheme is: the included angle between the slow slope surface and the axis of the trachea catheter is 15 degrees, and the included angle between the steep slope surface and the axis of the trachea catheter is 70 degrees.
The utility model discloses a further technical scheme is: the anterior incisor ring is at 2/3 of the axial length of the locating sleeve.
Compared with the prior art, the utility model have following advantage:
1. after the positioning sleeve is arranged on the tracheal catheter, the positioning sleeve can only move towards the front end of the tracheal catheter and cannot move towards the rear end of the tracheal catheter through the ratchet groove and ratchet matched structure, and the tracheal catheter is effectively prevented from being separated from the airway of a patient.
2. The outside of the positioning sleeve is a hard shell, so that the tracheal catheter is effectively prevented from being bitten and closed by a patient in an unconscious state, and the inside of the positioning sleeve is an elastic inner sleeve which has a certain deformable amount and is convenient to move on the tracheal catheter.
3. The tracheal catheter front end is equipped with the scale, makes the pipe depth of putting visual, and when the position sleeve upwards promoted along tracheal catheter, every surpassed a ratchet and all can bring once and pause to frustrate and feel, is equivalent to and has provided the feedback of the relevant pipe depth of putting for putting a tub operating personnel, helps promoting the accuracy of intubate process.
4. Preparation work before the intubate is simple relatively, and required part compares prior art and reduces to some extent, and the intubate operation is simplified, need not to tear fixed each part of adhesive tape winding, can promote intubate efficiency by a wide margin.
The invention is further described below with reference to the figures and examples.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the endotracheal tube;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view of portion B of FIG. 2;
FIG. 5 is a cross-sectional view C-C of FIG. 4;
FIG. 6 is a schematic structural view of the positioning sleeve;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a cross-sectional view taken along line D-D of FIG. 7;
FIG. 9 is an enlarged view of section E of FIG. 1;
fig. 10 is an enlarged view of a portion F of fig. 1.
Illustration of the drawings: an endotracheal tube 1; a front end 11; a back end 12; a ratchet 13; a guide groove 14; a split a 21; a hard outer layer a 211; a baffle ring split body A2111; lace attachment ring a 2112; an elastic inner layer A212; split B22; a hard outer layer B221; a baffle ring split B2211; lace connecting rings B2212; an elastic inner layer B222; a through hole 23; a ratchet groove 231; a guide edge 232; and a lace 3.
Detailed Description
Example 1:
as shown in figures 1-10, the anti-slipping tracheal catheter comprises a tracheal catheter 1 and an anti-slipping mechanism.
The front end 11 of the tracheal catheter 1 is a connecting end of a breathing machine, the rear end 12 is an inserting end of an airway, four rows of ratchets 13 which are uniformly distributed in a ring shape are arranged on the outer wall of the front end 11 of the tracheal catheter 1, and each row of ratchets 13 comprises a plurality of ratchets 13 which are arranged at intervals along the axial direction.
The anti-slip mechanism comprises a positioning sleeve and a lace 3.
The positioning sleeve is formed by encircling and splicing a split body A21 and a split body B22. The split A21 comprises a hard outer layer A211 and an elastic inner layer A212 fixedly connected (glued or hot-melted) on the inner side of the hard outer layer A211, a semicircular baffle ring split A2111 is arranged on the outer side of the hard outer layer A211, and a lace connecting ring A2112 is arranged on the outer side of the baffle ring split A2111. The split body B22 comprises a hard outer layer B221 and an elastic inner layer B222 fixedly connected (glued or hot-melted) on the inner side of the hard outer layer B221, a semicircular baffle ring split body B2211 is arranged on the outer side of the hard outer layer B221, and a lace connecting ring B2212 is arranged on the outer side of the baffle ring split body B2211.
When the split body A21 and the split body B22 are combined in a surrounding manner to form the positioning sleeve, the elastic inner layer A212 of the split body A21 and the elastic inner layer B222 of the split body B22 are combined in a surrounding manner to form a through hole 23 matched with the outer diameter of the tracheal catheter 1, a ratchet groove 231 matched with the shape of the ratchet 13 is formed in the hole wall of the through hole 23, the baffle ring split body A2111 and the baffle ring split body B2211 are combined with each other to form a front incisor baffle ring, the front incisor baffle ring is positioned at 2/3 of the axial length of the positioning sleeve, and the frenum connecting ring A2112 and the frenum connecting ring B2212 are symmetrically distributed around the center line.
When the positioning sleeve is installed on the outer wall of the endotracheal tube 1, the positioning sleeve can only move in one direction from the rear end 12 of the endotracheal tube 1 to the front end 11 of the endotracheal tube 1 through the structure that the ratchet grooves 231 are matched with the ratchet teeth 13.
Two tethers 3 are detachably connected to tether connection ring a2112 and tether connection ring B2212 of the positional collar, respectively.
Preferably, transition fit is formed between the tracheal catheter 1 and the through hole 23 of the positioning sleeve, and H10/H10, H11/H11 or H12/H12 is selected for matching. The cooperation is too loose then appears once only impel easily and cross a plurality of ratchets 13 and can't fall back, cooperation tension then impel and cross a ratchet 13 all very hard, adopt between above-mentioned transition complex position sleeve and the endotracheal tube 1 neither too loose nor too tight, the resistance of position sleeve when impeling on the endotracheal tube 1 outer wall is comparatively suitable, can avoid the resistance too little and impel overspeed or resistance too big and impel difficultly.
Preferably, the outer wall of the front end 11 of the endotracheal tube 1 is provided with guide grooves 14 extending axially, the number of the guide grooves 14 is four, and the four guide grooves 14 are uniformly distributed on the outer wall of the endotracheal tube 1 in a ring shape; correspondingly, four guide edges 232 matched with the guide grooves 14 are arranged on the hole wall of the through hole 23 of the positioning sleeve. The structure of the guide groove 14 and the guide rib 232 helps the ratchet teeth 13 to be quickly abutted with the ratchet grooves 231.
Preferably, the end of the guide groove 14 opposite to the rear end 12 of the endotracheal tube 1 is spaced from the rear end 12 of the endotracheal tube 1 by a distance of 16cm, thereby reserving a sufficient insertion depth margin.
Preferably, the ratchets 13 on the outer wall of the endotracheal tube 1 are four rows, the four rows of ratchets 13 are uniformly distributed on the outer wall of the endotracheal tube 1 in a ring shape, and one row of ratchets 13 is arranged between every two adjacent guide grooves 14.
Preferably, the outer wall of the front end 11 of the tracheal catheter 1 is provided with scales extending along the axial direction, and the division value of the scales is 5 mm; correspondingly, all the ratchets 13 are arranged at the section of the front end 11 of the endotracheal tube 1 where the scales are located, and the tooth crest spacing S of the adjacent ratchets 13 in one row of ratchets 13 is 5 mm. On the one hand, scale on the outer wall of the front end 11 of the tracheal catheter 1 can well indicate the intubation depth, the medical staff of being convenient for can carry out the intubation operation, on the other hand, the tooth top interval of the adjacent ratchets 13 in one row of ratchets 13 is consistent with the division value of the scale, the intubation depth can be roughly known by the number of the silent intubations when the medical staff is pushed to pass through one ratchets 13, namely, 5mm is downwards pushed to represent, when the medical staff pushes the positioning sleeve along the outer wall of the tracheal catheter 1, the scale does not need to be stared at all times, and the intubation depth can be roughly known by the number of the silent intubations.
Preferably, the ratchet 13 is composed of a gentle slope surface 131 and a steep slope surface 132 connected with the gentle slope surface 131, an included angle a formed by the gentle slope surface 131 and the axis of the endotracheal tube 1 is 15 °, and an included angle β formed by the steep slope surface 132 and the axis of the endotracheal tube 1 is 70 °.
Preferably, the anterior incisor stop ring is located at 2/3 of the axial length of the positioning sleeve, after intubation, the positioning sleeve 2/3 length extends into the oral cavity, and the positioning sleeve 1/3 length is located outside the oral cavity.
Brief description of the use the utility model discloses a method for carrying out trachea cannula:
the human body model with the air passage is taken as an intubating object, and the preparation work is as follows:
1. placing the manikin in a supine position, placing the pillow under the shoulder, and bending back to a flower-smelling position, so that the oral cavity, the throat and the trachea are in the same longitudinal axis direction;
2. the joint surfaces of the split A21 and the split B22 are glued, and the split A21 and the split B22 are jointed in a surrounding manner to form a positioning sleeve, so that the positioning sleeve is arranged on the outer wall of the endotracheal tube 1 in a surrounding manner and is relatively close to the rear end 12.
The intubation steps are as follows:
1. separating lips of the manikin with index finger and thumb of right hand, holding laryngoscope handle with left hand, placing laryngoscope lens into root of tongue via mouth, picking up epiglottis cartilage, exposing glottis, with laryngoscope handle outside oral cavity, and laryngoscope lens extending into epiglottis;
2. the tracheal catheter 1 is held by the right hand and sent into the oral cavity, the tracheal catheter 1 is pushed downwards, the front end 11 of the tracheal catheter 1 enters the trachea by crossing the glottis, then the tracheal catheter is pushed continuously until the front incisor stop ring of the positioning sleeve is abutted against the outer side of the front incisor of the patient, then the tube core (the tube core is used for pipeline shaping) in the tracheal catheter 1 is pulled out, and the laryngoscope is withdrawn;
3. determining the intubation depth according to the medical requirement, then slowly pushing the tracheal catheter 1 downwards, knowing the current intubation depth by observing scales on the tracheal catheter 1, and having a pause feeling once when the tracheal catheter is pushed to pass through one ratchet 13, namely indicating that the tracheal catheter is pushed downwards by 5mm until the intubation depth required by the medical requirement is pushed;
4. connecting the front end 11 of the tracheal catheter 1 with a respiratory bag or a breathing machine for ventilation, and observing whether the two sides of the thorax of the human body model fluctuate and are symmetrical so as to confirm whether the intubation is correct;
5. after confirming that the intubation is correct, the air bag on the outer wall of the front end 11 of the tracheal catheter 1 is filled, the tracheal catheter 1 is fixed in the airway of the manikin, and then the tying belt 3 is tied and fixed on the side of the neck of the manikin.
Claims (8)
1. Anti-slipping tracheal catheter, which is characterized in that: comprises a tracheal catheter and an anti-skid mechanism;
the front end of the tracheal catheter is a connecting end of a breathing machine, the rear end of the tracheal catheter is an inserting end of an air passage, the outer wall of the front end of the tracheal catheter is provided with at least one row of ratchets extending along the axial direction, and the one row of ratchets comprises a plurality of ratchets arranged at intervals;
the anti-skid mechanism comprises a positioning sleeve and a lacing;
the positioning sleeve is formed by encircling and splicing a split body A and a split body B; the split A comprises a hard outer layer A and an elastic inner layer A fixedly connected to the inner side of the hard outer layer A, a retaining ring split A is arranged on the outer side of the hard outer shell A, and a lacing connecting ring A is arranged on the outer side of the retaining ring split A; the split B comprises a hard outer layer B and an elastic inner layer B fixedly connected to the inner side of the hard outer layer B, a retaining ring split B is arranged on the outer side of the hard outer shell B, and a lacing connecting ring B is arranged on the outer side of the retaining ring split B; when the split body A and the split body B are spliced to form the positioning sleeve in a surrounding manner, the elastic inner layer A of the split body A and the elastic inner layer B of the split body B form a through hole matched with the outer diameter of the tracheal catheter in a surrounding manner, and a ratchet groove matched with the ratchet in shape is arranged on the wall of the through hole; the baffle ring split body A and the baffle ring split body B are mutually spliced to form a front incisor baffle ring, and the frenum connecting ring A and the frenum connecting ring B are symmetrically distributed around the center line of the positioning sleeve;
when the positioning sleeve is arranged on the outer wall of the tracheal catheter, the positioning sleeve can only move in a single direction from the rear end of the tracheal catheter to the front end of the tracheal catheter through the structure that the ratchet grooves are matched with the ratchets;
two frenulums are respectively detachable to be connected on frenulum go-between A and frenulum go-between B of position sleeve.
2. The anti-slip endotracheal tube according to claim 1, characterized in that: the through hole is in transition fit with the tracheal catheter.
3. The anti-slip endotracheal tube according to claim 2, characterized in that: the outer wall of the front end of the tracheal catheter is provided with guide grooves extending axially, the number of the guide grooves is four, and the four guide grooves are annularly and uniformly distributed on the outer wall of the tracheal catheter; correspondingly, four guide edges matched with the guide grooves are arranged on the wall of the through hole of the elastic inner sleeve.
4. An anti-slip endotracheal tube according to claim 3 characterized in that: the outer wall of the tracheal catheter is provided with four rows of ratchets which are uniformly distributed on the outer wall of the tracheal catheter in a ring shape, and one row of ratchets is arranged between every two adjacent guide grooves.
5. The anti-slip endotracheal tube according to claim 4, characterized in that: the outer wall of the front end of the tracheal catheter is provided with scales extending along the axial direction, and the division value of the scales is 5 mm; correspondingly, all the ratchets are arranged in the section where the scales at the front end of the tracheal catheter are located, and the tooth crest distance of adjacent ratchets in one row of ratchets is 5 mm.
6. An anti-slip endotracheal tube according to any one of claims 1 to 5, characterized in that: the ratchet consists of a slow slope surface and a steep slope surface connected with the slow slope surface, the included angle formed by the slow slope surface and the axis of the trachea catheter is 5-20 degrees, and the included angle formed by the steep slope surface and the axis of the trachea catheter is 50-80 degrees.
7. The anti-slip endotracheal tube according to claim 6, characterized in that: the included angle between the slow slope surface and the axis of the trachea catheter is 15 degrees, and the included angle between the steep slope surface and the axis of the trachea catheter is 70 degrees.
8. The anti-slip endotracheal tube according to claim 7, characterized in that: the anterior incisor ring is at 2/3 of the axial length of the locating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021419957.7U CN212282468U (en) | 2020-07-19 | 2020-07-19 | Anti-skid degassing catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021419957.7U CN212282468U (en) | 2020-07-19 | 2020-07-19 | Anti-skid degassing catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212282468U true CN212282468U (en) | 2021-01-05 |
Family
ID=73936379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021419957.7U Expired - Fee Related CN212282468U (en) | 2020-07-19 | 2020-07-19 | Anti-skid degassing catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212282468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760155A (en) * | 2020-07-19 | 2020-10-13 | 李琳超 | Anti-slip detracheal tube and intubation method |
-
2020
- 2020-07-19 CN CN202021419957.7U patent/CN212282468U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760155A (en) * | 2020-07-19 | 2020-10-13 | 李琳超 | Anti-slip detracheal tube and intubation method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210105 Termination date: 20210719 |