CN114473935A - Medical field multimode screwed joint - Google Patents
Medical field multimode screwed joint Download PDFInfo
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- CN114473935A CN114473935A CN202210284449.XA CN202210284449A CN114473935A CN 114473935 A CN114473935 A CN 114473935A CN 202210284449 A CN202210284449 A CN 202210284449A CN 114473935 A CN114473935 A CN 114473935A
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- 210000001015 abdomen Anatomy 0.000 claims abstract description 7
- 230000004323 axial length Effects 0.000 claims description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229960000074 biopharmaceutical Drugs 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/16—Handles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a multi-way screwed joint in the medical field, which comprises a joint main body, wherein the joint main body is a handle, an outer hexagonal wrench position, a hand-tightening anti-skid position and a plug-pull handle-pushing position are arranged outside the handle, hand-tightening anti-skid lines are arranged on the hand-tightening anti-skid position, and the plug-pull handle-pushing position is an arc shape adapting to finger bellies; the length of the outer hexagonal wrench position along the axial direction is 3mm to 3.5mm, the length of the hand screwing anti-slip position 200 along the axial direction is 2.50mm to 2.80mm, and the length of the plugging push-pull handle position 300 along the axial direction is 4.9mm to 8.0 mm. The invention particularly develops a multi-mode screwing connector in the medical field according to the defects of various original single-mode connectors, and the final beneficial effect of the multi-mode screwing connector meets various modes of hand screwing, wrench screwing and back taper plugging functions.
Description
Technical Field
The invention relates to a fluid pipeline joint, in particular to a joint of a fluid pipeline.
Background
As shown in fig. 1, eight common joints are listed in the form of the existing joints of fluid pipelines in the medical field, wherein the names of the joints represented by different serial numbers in the figure are as follows, namely an internal thread plug 201, an external thread adapter reverse taper joint 202, an internal thread adapter reverse taper joint 203, an external thread joint 204, an external thread joint 205, an external thread adapter reverse taper joint 206, a double-end internal thread joint 207 and an external thread joint 208; the above are the joints of eight conventional medical fluid pipelines, and as can be seen from fig. 1, the existing joints are tightened by a single hand or a single wrench, and in the prior art, there is generally no joint between the handle and the wrench, because: one of the methods of hand tightening and wrench tightening is common and is commonly performed by people.
Disclosure of Invention
Biochemical instrument, the size that medical field connects and crossover sub is less, the ordinary single hand antiskid line mode of universal adoption, the inventor of this application is through thinking and design, in order to improve the installation or the change efficiency that connect, and guarantee the installation effect, a joint that multimode was screwed up is provided, specifically combine for three modes, its main technical difficulty is that the mode that hopes to connect can hand be screwed up, the plug function of spanner screwing up and back taper all possesses simultaneously, so the development design has multiple mode function of screwing up, reach the effect of high-efficient high-quality screwing up.
A multi-way screwed joint in the medical field comprises a joint main body, wherein the joint main body is a handle, an outer hexagonal wrench position, a hand-tightening anti-slip position and a plug-pull handle position are arranged outside the handle, hand-tightening anti-slip patterns are arranged on the hand-tightening anti-slip position, and the plug-pull handle position is an arc shape adapting to finger bellies; the length of the outer hexagonal wrench position along the axial direction is 3mm to 3.5mm, the length of the hand screwing anti-skidding position along the axial direction is 2.50mm to 2.80mm, and the length of the plugging push-pull handle position along the axial direction is 4.9mm to 8.0 mm.
As a further improvement of the invention, the hand-tightening anti-skid position is arranged between the outer hexagonal wrench position and the plugging push-pull handle position.
As a further improvement of the invention, the connector is an internal thread plug, one end inside the internal thread plug is provided with a thread, the other end is a plugging structure, the length of an outer hexagonal wrench position of the internal thread plug along the axial direction is 3mm, the length of a hand-tightening anti-skid position along the axial direction is 2.6mm to 2.7mm, and the length of a plug-pull handle position along the axial direction is 7.8mm to 8.0 mm.
As a further improvement of the invention, the connector is an internal thread switching external thread connector, one end of the interior of the internal thread switching external thread connector is provided with threads, the other end of the interior of the internal thread switching external thread connector extends out of an external thread structure, the length of an outer hexagonal wrench position of the internal thread switching external thread connector along the axial direction is 3mm, the length of a hand-screwing anti-skid position along the axial direction is 2.6mm to 2.7mm, and the length of a plugging push-pull handle position along the axial direction is 7.8mm to 8.0 mm.
As a further improvement of the invention, the connector is an internal thread switching inverted cone connector, one end of the interior of the internal thread switching inverted cone connector is provided with threads, the other end of the interior of the internal thread switching inverted cone connector extends out of an inverted cone structure, the length of an outer hexagonal wrench position of the internal thread switching inverted cone connector along the axial direction is 3mm, the length of a hand screwing anti-skid position along the axial direction is 2.6mm to 2.7mm, and the length of a plugging push-pull handle position along the axial direction is 4.9mm to 5.0 mm.
As a further improvement of the invention, the connector is a double-head female screw connector, the middle part of the double-head female screw connector is a plugging push-pull handle position, two ends of the plugging push-pull handle position are respectively a hand-tightening anti-slip position, the outer part of the hand-tightening anti-slip position is respectively provided with an outer hexagonal wrench position, two ends of the inner part of the double-head female screw connector are respectively provided with a screw thread, the length of the outer hexagonal wrench position of the double-head female screw connector along the axial direction is 3.4mm to 3.5mm, the length of the hand-tightening anti-slip position along the axial direction is 2.7mm to 2.8mm, and the length of the plugging push-pull handle position along the axial direction is 7.2mm to 7.3 mm.
As a further improvement of the invention, the connector is an external thread switching inverted cone connector, one end of the external thread switching inverted cone connector extends out of an inverted cone structure, the other end of the external thread switching inverted cone connector extends out of an external thread structure, the length of an outer hexagonal wrench position of the external thread switching inverted cone connector along the axial direction is 3.0mm to 3.1mm, the length of a hand screwing anti-skid position along the axial direction is 2.50mm to 2.60mm, and the length of a plugging push-pull handle position along the axial direction is 5.8mm to 6.2 mm.
The invention has the beneficial effects that:
the invention relates to a multi-way screwed joint in the medical field, which is developed by a liquid pipeline connecting joint and a connecting and converting joint used in the fields of precision instruments, biochemical sequencing and biopharmaceutical fields.
The invention particularly develops a multi-way screwed joint in the medical field according to the original fluid pipeline connecting joint and the original connecting conversion joint, and the final beneficial effect of the invention solves the problem of effectively ensuring the connection between the connecting joint and the converting connecting joint and the fluid pipeline. The existing connectors or adapter joints on the market only have a single handprint fastening type, which cannot ensure the tightness and reliability when the connector is connected with a pipeline, and the problem of fluid leakage in the pipeline can be caused because the pipe and the connector are not screwed because of limited force when the pipe and the connector are screwed by hands, so the invention adds an outer hexagonal wrench position on the basis of the existing product threaded connector and adds an arc-shaped plugging position on the basis of the existing inverse cone-shaped connector to realize more convenient connection and fastening modes of the pipe and the connector, wherein the outer hexagonal wrench position can be used for a professional torque wrench to ensure the fastening connection between the pipe and the connector, the arc-shaped plugging position added on the inverse cone-shaped connector can be matched with the hand feeling of a person and is convenient for the plugging operation of the pipe, in the prior art, the plugging operation is directly carried out by utilizing an anti-skid thread part, and the hand feeling is not good, the novel hand twisting anti-skid thread is not easy to apply force, adopts a radian design, is convenient to apply force, is newly designed and improved, has small and exquisite hand twisting anti-skid threads, and brings more comfortable operation to hand feeling of people.
The inventor of the application abandons the common practice, according to the use characteristics of the connector of this kind, for improving its installation effectiveness, guaranteeing the best installation effect, made the thinking, found technical problem: namely, on the basis of the prior art, how to achieve faster installation, better hand feeling experience and better installation effect is achieved, and the solution is found by thinking and innovation.
Drawings
FIG. 1: eight joint structures in the prior art are schematically shown;
FIG. 2: five structural schematic diagrams of the multi-way screwed joint in the medical field are shown;
FIG. 3: the structure schematic diagram of the internal thread plug 1;
FIG. 4: a front view and a cross section of the internal thread plug 1;
FIG. 5: the size schematic diagram of the internal thread plug 1;
FIG. 6: the internal thread is connected with the external thread joint 2 schematically;
FIG. 7: the internal thread is transferred and the external thread is connected 2 sectional views;
FIG. 8: the size of the internal thread switching male screw joint 2 is shown;
FIG. 9: the internal thread switching inverted cone joint 3 is in a schematic structure;
FIG. 10: the internal thread switching back taper joint 3 is a sectional view;
FIG. 11: the size of the internal thread switching inverted cone connector 3 is shown in the figure;
FIG. 12: the structure of the double-head female adapter 4 is shown schematically;
FIG. 13: a double-end female adapter 4 is in a sectional view;
FIG. 14: dimension drawing of the double-head female adapter 4;
FIG. 15: the external thread is connected with the inverted cone joint 5 in a schematic way;
FIG. 16: the external thread is connected with the inverted cone joint 5 in a cross section;
FIG. 17: the external thread is connected with the size chart of the inverted cone joint 5;
description of the drawings: all lengths in the figure are in mm.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention relates to a multi-mode screwing joint in the medical field, which aims to solve the problem that the joint and the adapter are used in the aspect of fluid pipelines, the function of integrating multiple screwing modes into a whole is developed on the basis of the original joint and adapter, and the main technical difficulty is that the joint mode can be realized by hand screwing, spanner screwing and inserting and pulling functions of inverted cones, so that the functions of multiple screwing modes are developed and designed. The invention particularly develops a multi-way screwing joint in the medical field according to the defects of various original single-form joints, and the final beneficial effect of the multi-way screwing joint meets various modes of hand screwing, wrench screwing and back taper plugging and unplugging functions.
Embodiment 1:
as shown in fig. 3 to 5, a multi-way screwed joint in the medical field comprises a joint main body, wherein the joint main body is a handle, an outer hexagonal wrench position 100, a hand screwing anti-skid position 200 and a plugging push handle position 300 are arranged outside the handle, the hand screwing anti-skid position is provided with hand screwing anti-skid grains, and the plugging push handle position 300 is an arc shape adapted to finger bellies; the hand-tightening anti-slip position 200 is arranged between the outer hexagonal wrench position 100 and the plugging push handle position 300. The connector is an internal thread plug 1, a thread is arranged at one end inside the internal thread plug 1, the other end of the internal thread plug is of a plugging structure, the length of an outer hexagonal wrench position 100 of the internal thread plug 1 along the axial direction is 3mm, the length of a hand-screwing anti-slip position 200 along the axial direction is 2.6mm to 2.7mm, and the length of a plug push-pull handle position 300 along the axial direction is 7.8mm to 8.0 mm.
Embodiment 2:
as shown in fig. 6 to 8, a multi-way screwed joint in the medical field comprises a joint main body, wherein the joint main body is a handle, an outer hexagonal wrench position 100, a hand screwing anti-skid position 200 and a plugging push handle position 300 are arranged outside the handle, the hand screwing anti-skid position is provided with hand screwing anti-skid grains, and the plugging push handle position 300 is an arc shape adapted to finger bellies; the hand-screwing anti-slip position 200 is arranged between the outer hexagonal wrench position 100 and the plugging push-pull handle position 300.
The connector is an internal thread switching external thread connector 2, a thread is arranged at one end inside the internal thread switching external thread connector 2, an external thread structure extends from the other end of the internal thread switching external thread connector, the length of an outer hexagonal wrench position 100 of the internal thread switching external thread connector 2 along the axial direction is 3mm, a hand screwing anti-skid position 200 is 2.6mm to 2.7mm along the axial direction, and a plug push-pull handle position 300 is 7.8mm to 8.0mm along the axial direction.
Embodiment 3:
as shown in fig. 9 to 11, a multi-way screwed joint in the medical field comprises a joint main body, wherein the joint main body is a handle, an outer hexagonal wrench position 100, a hand screwing anti-skid position 200 and a plugging and pulling handle position 300 are arranged outside the handle, hand screwing anti-skid grains are arranged on the hand screwing anti-skid position, and the plugging and pulling handle position 300 is an arc shape adapted to finger bellies; the hand-screwing anti-slip position 200 is arranged between the outer hexagonal wrench position 100 and the plugging push-pull handle position 300.
The connector is an internal thread switching inverted cone connector 3, one end of the interior of the internal thread switching inverted cone connector 3 is provided with threads, the other end of the internal thread switching inverted cone connector 3 extends out of an inverted cone structure, the length of an outer hexagonal wrench position 100 of the internal thread switching inverted cone connector 3 along the axial direction is 3mm, a hand screwing anti-skid position 200 is 2.6mm to 2.7mm along the axial direction, and a plug push-pull handle position 300 is 4.9mm to 5.0mm along the axial direction.
Embodiment 4:
as shown in fig. 12 to 14, a joint that medical field multimode was screwed up, includes the joint main part, the joint main part is the handle, the outside of handle is equipped with outer hexagonal spanner position 100, hand is screwed anti-skidding position 200 and plug and is pushed handle position 300, and hand is screwed anti-skidding position and is equipped with hand and screws anti-skidding line, and plug and is pushed handle position 300 and for the arc that adapts to finger pad.
The connector is a double-end female adapter 4, the middle of the double-end female adapter 4 is a plug push-pull handle position 300, two ends of the plug push-pull handle position 300 are respectively a hand-tightening anti-slip position 200, the outer portions of the hand-tightening anti-slip positions 200 are respectively provided with an outer hexagonal wrench position 100, two ends of the inner portion of the double-end female adapter 4 are respectively provided with threads, the length of the outer hexagonal wrench position 100 of the double-end female adapter 4 along the axial direction is 3.4mm to 3.5mm, the length of the hand-tightening anti-slip position 200 along the axial direction is 2.7mm to 2.8mm, and the length of the plug push-pull handle position 300 along the axial direction is 7.2mm to 7.3 mm.
Embodiment 5:
as shown in fig. 15 to 17, a multi-way screwed joint in the medical field comprises a joint main body, wherein the joint main body is a handle, an outer hexagonal wrench position 100, a hand screwing anti-skid position 200 and a plugging push handle position 300 are arranged outside the handle, the hand screwing anti-skid position is provided with hand screwing anti-skid grains, and the plugging push handle position 300 is an arc shape adapted to finger bellies; the hand-tightening anti-slip position 200 is arranged between the outer hexagonal wrench position 100 and the plugging push handle position 300.
The connector is external screw thread switching back taper connector 5, and external screw thread switching back taper connector 5 one end extends the back taper structure, and the other end extends external screw thread structure, and the outer hexagonal spanner position 100 of external screw thread switching back taper connector 5 is between 3.0mm to 3.1mm along axial length, and the hand is twisted antiskid position 200 and is between 2.50mm to 2.60mm along axial length, and plug push-pull handle position 300 is between 5.8mm to 6.2mm along axial length.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. The utility model provides a joint that medical field multimode was screwed up which characterized in that: the connector comprises a connector main body, wherein the connector main body is a handle, an outer hexagonal wrench position (100), a hand-tightening anti-slip position (200) and a plug-pull handle position (300) are arranged outside the handle, hand-tightening anti-slip patterns are arranged on the hand-tightening anti-slip position, and the plug-pull handle position (300) is an arc shape adapting to finger bellies; the length of the outer hexagonal wrench position (100) along the axial direction is 3mm to 3.5mm, the length of the hand-screwing anti-slip position (200) along the axial direction is 2.50mm to 2.80mm, and the length of the plugging push-pull handle position (300) along the axial direction is 4.9mm to 8.0 mm.
2. The medical field multi-way tightening joint according to claim 1, wherein: the hand-screwing anti-skid position (200) is arranged between the outer hexagonal wrench position (100) and the plugging push handle position (300).
3. The medical field multi-way tightened joint according to claim 1, wherein: the connector is an internal thread plug (1), a thread is arranged at one end inside the internal thread plug (1), the other end of the internal thread plug is of a plugging structure, the length of an outer hexagonal wrench position (100) of the internal thread plug (1) along the axial direction is 3mm, the length of a hand screwing anti-slip position (200) along the axial direction is 2.6mm to 2.7mm, and the length of a plug push handle position (300) along the axial direction is 7.8mm to 8.0 mm.
4. The medical field multi-way tightening joint according to claim 1, wherein: the connector is an internal thread switching external thread connector (2), a thread is arranged at one end inside the internal thread switching external thread connector (2), an external thread structure extends out of the other end of the internal thread switching external thread connector, the length of an outer hexagonal wrench position (100) of the internal thread switching external thread connector (2) along the axial direction is 3mm, a hand screwing anti-skidding position (200) is 2.6mm to 2.7mm along the axial length, and a plug push handle position (300) is 7.8mm to 8.0mm along the axial length.
5. The medical field multi-way tightening joint according to claim 1, wherein: the connector is an internal thread switching inverted cone connector (3), one end of the interior of the internal thread switching inverted cone connector (3) is provided with threads, the other end of the internal thread switching inverted cone connector extends out of an inverted cone structure, the length of an outer hexagonal wrench position (100) of the internal thread switching inverted cone connector (3) along the axial direction is 3mm, a hand screwing anti-skidding position (200) is 2.6mm to 2.7mm along the axial length, and a plug push handle position (300) is 4.9mm to 5.0mm along the axial length.
6. The medical field multi-way tightening joint according to claim 1, wherein: the connector is double-end female adapter (4), the middle part of double-end female adapter (4) is plug push handle position (300), the both ends of plug push handle position (300) are respectively for hand twist anti-skidding position (200), the outside of hand twist anti-skidding position (200) is equipped with outer hexagonal spanner position (100) respectively, the inside both ends of double-end female adapter (4) are equipped with the screw thread respectively, the length along the axial of outer hexagonal spanner position (100) of double-end female adapter (4) is between 3.4mm to 3.5mm, hand twist anti-skidding position (200) is between 2.7mm to 2.8mm along axial length, plug push handle position (300) is between 7.2mm to 7.3mm along axial length.
7. The medical field multi-way tightening joint according to claim 1, wherein: the connector is an external thread switching inverted cone connector (5), one end of the external thread switching inverted cone connector (5) extends out of an inverted cone structure, the other end of the external thread switching inverted cone connector (5) extends out of an external thread structure, the length of an outer hexagonal wrench position (100) of the external thread switching inverted cone connector (5) along the axial direction is 3.0mm to 3.1mm, the anti-skid position (200) is screwed by a hand along the axial direction is 2.50mm to 2.60mm, and the handle position (300) is pushed and pulled by the plug along the axial direction is 5.8mm to 6.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210284449.XA CN114473935A (en) | 2022-03-22 | 2022-03-22 | Medical field multimode screwed joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210284449.XA CN114473935A (en) | 2022-03-22 | 2022-03-22 | Medical field multimode screwed joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114473935A true CN114473935A (en) | 2022-05-13 |
Family
ID=81487577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210284449.XA Pending CN114473935A (en) | 2022-03-22 | 2022-03-22 | Medical field multimode screwed joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114473935A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5533765A (en) * | 1991-10-25 | 1996-07-09 | Nwd International, Inc. | Crimped tube-to-port hydraulic fittings |
| CA2322911A1 (en) * | 2000-10-11 | 2002-04-11 | Branimir Markovic | Pressurized hose coupling |
| CN202493831U (en) * | 2011-12-31 | 2012-10-17 | 浙江龙越管业有限公司 | Quick connector |
| CN202691388U (en) * | 2012-07-29 | 2013-01-23 | 李成余 | External sleeve structure on rapid joint |
| CN204554171U (en) * | 2015-04-21 | 2015-08-12 | 杭州欣卓科技有限公司 | A kind of hand-wring type butt joint |
| CN205479810U (en) * | 2016-01-08 | 2016-08-17 | 李宁 | Quick hand of interior hexagonal type hard tube is twisted and is connected |
| CN206478361U (en) * | 2016-12-28 | 2017-09-08 | 北京思瑞德医疗器械有限公司 | A kind of pipe joint and the Medical Instruments with fluid circuit |
| CN208153890U (en) * | 2018-04-16 | 2018-11-27 | 南京润泽流体控制设备有限公司 | Pretightning force pipeline back taper connector |
| CN211528305U (en) * | 2019-12-24 | 2020-09-18 | 劢析科学仪器(苏州)有限公司 | Hand tight joint structure |
| CN211798248U (en) * | 2019-10-18 | 2020-10-30 | 深圳安特医疗股份有限公司 | Conical joint and needleless infusion joint |
-
2022
- 2022-03-22 CN CN202210284449.XA patent/CN114473935A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5533765A (en) * | 1991-10-25 | 1996-07-09 | Nwd International, Inc. | Crimped tube-to-port hydraulic fittings |
| CA2322911A1 (en) * | 2000-10-11 | 2002-04-11 | Branimir Markovic | Pressurized hose coupling |
| CN202493831U (en) * | 2011-12-31 | 2012-10-17 | 浙江龙越管业有限公司 | Quick connector |
| CN202691388U (en) * | 2012-07-29 | 2013-01-23 | 李成余 | External sleeve structure on rapid joint |
| CN204554171U (en) * | 2015-04-21 | 2015-08-12 | 杭州欣卓科技有限公司 | A kind of hand-wring type butt joint |
| CN205479810U (en) * | 2016-01-08 | 2016-08-17 | 李宁 | Quick hand of interior hexagonal type hard tube is twisted and is connected |
| CN206478361U (en) * | 2016-12-28 | 2017-09-08 | 北京思瑞德医疗器械有限公司 | A kind of pipe joint and the Medical Instruments with fluid circuit |
| CN208153890U (en) * | 2018-04-16 | 2018-11-27 | 南京润泽流体控制设备有限公司 | Pretightning force pipeline back taper connector |
| CN211798248U (en) * | 2019-10-18 | 2020-10-30 | 深圳安特医疗股份有限公司 | Conical joint and needleless infusion joint |
| CN211528305U (en) * | 2019-12-24 | 2020-09-18 | 劢析科学仪器(苏州)有限公司 | Hand tight joint structure |
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