CN115177335A - Syringe for puncture - Google Patents
Syringe for puncture Download PDFInfo
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- CN115177335A CN115177335A CN202210876975.5A CN202210876975A CN115177335A CN 115177335 A CN115177335 A CN 115177335A CN 202210876975 A CN202210876975 A CN 202210876975A CN 115177335 A CN115177335 A CN 115177335A
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- rod
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- plunger
- side wall
- mounting plate
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- 230000000670 limiting effect Effects 0.000 claims abstract description 36
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims description 34
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 3
- 210000001685 thyroid gland Anatomy 0.000 description 3
- 208000024770 Thyroid neoplasm Diseases 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 206010018498 Goitre Diseases 0.000 description 1
- 208000009453 Thyroid Nodule Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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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
- A61B17/3403—Needle locating or guiding means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B2010/0225—Instruments for taking cell samples or for biopsy for taking multiple samples
-
- 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
- A61B17/3403—Needle locating or guiding means
- A61B2017/3413—Needle locating or guiding means guided by ultrasound
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The application relates to the field of medical appliances, and discloses an injector for puncture, which comprises an injector body, wherein a positioning mechanism is arranged on the injector body, the injector body comprises a needle cylinder and a plunger penetrating into the needle cylinder, the positioning mechanism comprises a limiting plate fixed on the outer side wall of the needle cylinder at intervals along the extension direction of the needle cylinder and a positioning block arranged on the plunger, and the positioning block is abutted against the limiting plate; the positioning block is connected to the plunger through a movable structure. The application has the following advantages and effects: the positioning block on the plunger is abutted and positioned on the limiting plate, so that the plunger can be positioned at a fixed position relative to the needle cylinder in the suction process, a stable negative pressure is provided, and the hand pressure of an operator for maintaining the negative pressure of the syringe is relieved; meanwhile, the movable structure enables the positioning block to move relative to the plunger, so that the plunger does not need to be rotated when being pulled out outwards from the needle cylinder, and the operability of the plunger moving relative to the needle cylinder is improved.
Description
Technical Field
The application relates to the technical field of medical appliances, in particular to an injector for puncture.
Background
Fine needle puncture cytology of thyroid gland is the routine inspection method of goiter and thyroid nodular disease; thyroid nodule puncture is to place a patient in a special body position after B overtime, repeatedly insert a puncture needle in the B overtime position after disinfection, draw out certain thyroid gland tissues and perform pathological examination.
During the thyroid gland puncture operation, a syringe is used for maintaining proper negative pressure suction, and the needle is lifted and inserted back and forth 15-20 times at different parts in the same nodule.
In view of the above-mentioned related technologies, the inventor believes that, in the process of puncturing, the operation of puncturing the nodule back and forth while using the syringe to suck under negative pressure is not easy to be performed, hands are not easy to be compatible, the problems of insufficient negative pressure of the syringe or unstable puncturing path are easy to occur, the puncture quality is reduced, and therefore, the improvement is still needed.
Disclosure of Invention
In order to improve the stability of puncture tubercle operation, solve the problem that the hand can't compromise, improve puncture quality, the application provides an injector for puncture.
The application provides an injector for puncture adopts following technical scheme:
an injector for puncture comprises an injector body, wherein a positioning mechanism is arranged on the injector body, the injector body comprises a needle cylinder and a plunger penetrating into the needle cylinder, the positioning mechanism comprises limiting plates fixed on the outer side wall of the needle cylinder at intervals along the extension direction of the needle cylinder and positioning blocks arranged on the plunger, and the positioning blocks are abutted against the limiting plates; the positioning block is connected to the plunger through a movable structure.
By adopting the technical scheme, the positioning block connected with the plunger is abutted and positioned on the limiting plate, so that the plunger is stably positioned at the required position on the needle cylinder, and a stable negative pressure state is provided for the needle cylinder in the suction process; the positioning block can move relative to the plunger, so that the operation of rotating the positioning block and staggering the limiting plate is more convenient to carry out, the plunger does not need to be rotated completely, and the problem that the positioning block is difficult to rotate due to the fact that large friction exists between the plunger and the needle cylinder can be avoided; an operator only needs to concentrate on the action of puncture, so that the situations of insufficient negative pressure, unstable puncture path and the like are effectively reduced, the problem of mistaken puncture or less puncture is avoided, and the puncture quality is improved; meanwhile, the puncture difficulty is reduced, the hand pressure of an operator for maintaining the negative pressure of the syringe is effectively relieved, and when the puncture amount is large, the finger pain and even the blister after puncture can be obviously reduced.
Further, the method comprises the following steps: the head of the plunger is fixedly provided with a mounting plate, the movable structure comprises a sliding rod movably connected in the mounting plate and a connecting rod arranged outside the mounting plate, the positioning block is fixed at the bottom of the connecting rod, and the connecting rod is connected with the sliding rod in a matching manner; the sliding rod can transversely slide in the mounting plate and is respectively positioned at two ends of the mounting plate.
By adopting the technical scheme, the connecting rod realizes the connection of the positioning block and the plunger, when the plunger is pulled out from the needle cylinder, the positioning block can move along with the plunger and is positioned on the corresponding limiting plate so as to keep stable negative pressure in the needle cylinder; the sliding rod is connected with the connecting rod, and when the sliding rod moves transversely, the connecting rod and the positioning block can be driven to move, so that the positioning block can be conveniently abutted against the limiting plate at the corresponding position without rotating the whole plunger or the positioning block is rotated to be staggered with the limiting plate; when the locating piece butt in the limiting plate, the slide bar can be fixed a position, reduces the mistake and touches the connecting rod and lead to the locating piece accident to stagger with the limiting plate and cause the unstable condition of negative pressure.
Further, the method comprises the following steps: the movable structure comprises a sliding rod, a mounting plate and a movable structure, wherein an arc-shaped groove for the sliding rod to circumferentially slide is formed in the mounting plate, the movable structure further comprises a lifting block, clamping grooves are formed in two ends of the upper portion of the arc-shaped groove in a communicated mode, and the lifting block is movably connected to the sliding rod through a connecting structure and can be clamped in the clamping grooves in a clamped mode; when the positioning block is abutted against the limiting plate, the lifting block is positioned at one end of the arc-shaped groove close to the limiting plate and is clamped in the clamping groove.
By adopting the technical scheme, when the positioning block is abutted against the limiting plate, the lifting block is clamped in the clamping groove, so that the stable positioning of the sliding rod, the connecting rod and the positioning block relative to the mounting plate is realized; the arc-shaped groove is formed to provide a moving space for the sliding rod to move in cooperation with the positioning block.
Further: a tension spring abutting against the inner wall of the arc-shaped groove is fixed on the sliding rod, a protrusion is formed on the side wall of the sliding rod, an inclined plane extending from bottom to top towards the direction close to the inside of the mounting plate is formed on the side wall of the protrusion close to the lifting block, and a diagonal plane matched with the inclined plane is correspondingly formed on the side wall of the lifting block; when the extension spring naturally extends, the inclined plane is abutted to the highest point of the inclined plane, and the lifting block is clamped in the clamping groove.
Through adopting above-mentioned technical scheme, when inside extrusion slide bar compression extension spring, the elevator descends and deviates from the draw-in groove gradually through the cooperation of inclined plane and scarf, and the control link drives the slide bar this moment and makes its one end from the arc wall slide to the other end, can realize locating piece and the staggered process of limiting plate, need not the integral rotation plunger, avoids leading to the difficult problem of locating piece rotation because of there is great friction between plunger and the cylinder.
Further: the connecting structure comprises an inserted bar fixed on the side wall of the lifting block and a movable groove formed in the sliding bar, the inserted bar extends and is inserted into the movable groove, the inserted bar lifts along the movable groove, and the inserted bar can slide longitudinally along the movable groove; and a baffle is formed in the mounting plate and positioned on one side of the inserted bar far away from the lifting block, and the baffle abuts against the side wall of the inserted bar.
By adopting the technical scheme, the inserted bar can be lifted in the movable groove and can also longitudinally slide, and the relative movement of the lifting block on the sliding bar is matched; meanwhile, the connection of the lifting block and the sliding rod in the horizontal direction is kept through the matching of the inserted rod and the movable groove, so that the lifting block can be driven to synchronously move when the sliding rod slides transversely; the setting of baffle plays limiting displacement to the elevator, makes the elevator can accurately correspond to the draw-in groove in order to reach the purpose of being positioned in the draw-in groove, and under the butt of baffle, rises to the process of joint in the draw-in groove again after the elevator descends and can realize.
Further: the upper part of the connecting rod is bent to form a transverse plate connected to the mounting plate through a fixing structure, a push rod abutted against the sliding rod is movably connected in the transverse plate, a positioning groove for inserting one end of the push rod is formed in the end part of the sliding rod, and the other end of the push rod penetrates through the transverse plate; offer the groove of stepping down with the arc wall intercommunication on the lateral wall of mounting panel, the push rod can be followed the groove of stepping down and slided.
By adopting the technical scheme, the push rod penetrating through the transverse plate is stably matched with the sliding rod through the positioning groove, so that the sliding rod can be driven to move by pushing the push rod from the outside, and the operation is more convenient and faster; the abdication groove provides abdication space for the horizontal movement of the push rod so as to be matched with the movement of the positioning block.
Further: the fixing structure comprises a bending rod, a matching block and a matching groove, one end of the bending rod is fixed on the transverse plate, the other end of the bending rod is movable, and the bending rod is oppositely arranged at the upper end and the lower end of the transverse plate at equal intervals; the matching block is vertically fixed at the movable end of the bending rod, and the matching grooves are oppositely formed in the side wall of the mounting plate; when the bending rod deforms, the matching block can be inserted into and clamped and positioned in the matching groove; the push rod is provided with a groove, the bending rod extends towards the transverse plate to form a vertical rod, and the vertical rod is inserted into the groove and can slide along the groove.
Through adopting above-mentioned technical scheme, connect on the diaphragm by the pole of bending that can deform, the pole of bending after the deformation gets into the cooperation groove with the cooperation piece, and the resetting of rethread bending pole makes cooperation piece and cooperation groove realize the joint, makes the connecting rod can dismantle to connect on the mounting panel, and not necessary the time pull down can, make the syringe body be applicable to the use under the multiple condition.
Further: the side wall of the mounting plate is relatively fixed with an extension flange, and the side wall of the extension flange is arc-shaped.
By adopting the technical scheme, in the process of outwards pulling out the plunger, an operator needs to hold the B-ultrasonic probe by one hand, and can only operate and push the connecting rod and the positioning block by one hand, the area of the mounting plate is extended by the extension flange, so that a larger supporting area is provided for supporting by one hand, the plunger can be prevented from being sucked backwards during operation by one hand, and the adjustment and the positioning of the connecting rod and the positioning block can be realized.
Further: the pressing plate is fixed at one end, close to the inner wall of the arc-shaped groove, of the extension spring, the idler wheels are fixed on the pressing plate, and a rolling groove for the idler wheels to roll is formed in the inner wall of the arc-shaped groove.
Through adopting above-mentioned technical scheme, the clamp plate is used for supporting extension spring and gyro wheel respectively, solves extension spring direct butt in the arc wall inner wall and the difficult problem that removes, is assisted the smooth of the pole that slides along the arc wall process of sliding by the cooperation of gyro wheel and roll groove.
Further: a supporting flange is formed on the side wall of the end part of the needle cylinder at the position staggered with the connecting rod, and scale marks are arranged on the other side of the side wall of the needle cylinder opposite to the connecting rod and the supporting flange; the bending rods can slide along the side walls of the mounting plate.
Through adopting above-mentioned technical scheme, connecting rod, scale mark and supporting flange dislocation set, it is more reasonable to structure.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the positioning block on the plunger is abutted and positioned on the limiting plate, and the plunger is stably positioned at a required position on the needle cylinder to provide a stable negative pressure state; the positioning block can move relative to the plunger, so that the operation of rotating the positioning block and staggering the limiting plate is more convenient to carry out, the plunger does not need to be rotated completely, and the problem that the positioning block is difficult to rotate due to the fact that large friction exists between the plunger and the needle cylinder is avoided; an operator only needs to concentrate on the puncture action, the situations of insufficient negative pressure or unstable puncture path and the like are effectively reduced, the problem of mistaken puncture or less puncture is avoided, and the puncture quality is improved; meanwhile, the puncture difficulty is reduced, the hand pressure of an operator for maintaining the negative pressure of the syringe is effectively relieved, and when the puncture amount is large, the finger pain and even the blister after puncture can be obviously reduced;
2. when the sliding rod is squeezed inwards to compress the extension spring, the lifting block gradually descends and is separated from the clamping groove through the matching of the inclined plane and the inclined plane, the connecting rod is controlled to drive the sliding rod to slide from one end of the arc-shaped groove to the other end, the positioning block and the limiting plate can be staggered, the plunger does not need to be integrally rotated, and the problem that the positioning block is difficult to rotate due to large friction between the plunger and the needle cylinder is solved;
3. the inserted link can go up and down in the activity trough and can also slip longitudinally, cooperate with the relative movement on the sliding lever of the lifting block; meanwhile, the connection of the lifting block and the sliding rod in the horizontal direction is kept through the matching of the inserted rod and the movable groove, so that the lifting block can be driven to synchronously move when the sliding rod slides transversely; the arrangement of the baffle plate has a limiting effect on the lifting block, so that the lifting block can accurately correspond to the clamping groove to achieve the purpose of being positioned in the clamping groove, and under the abutting of the baffle plate, the lifting block can ascend again to the clamping groove after descending, so that the clamping process can be realized;
4. the deformable bending rod is connected to the transverse plate, the deformed bending rod and the matching block enter the matching groove, and the matching block and the matching groove are clamped through resetting of the bending rod, so that the connecting rod can be detachably connected to the mounting plate and can be detached when not needed, and the injector body is suitable for being used under various conditions;
5. the clamp plate is used for supporting extension spring and gyro wheel respectively, solves the direct butt of extension spring in the arc wall inner wall and the problem of difficult removal, is assisted the smooth going on of pole along the arc wall process of sliding by the cooperation in gyro wheel and roll groove.
Drawings
FIG. 1 is a schematic diagram of the structure of an injector body according to an embodiment of the present application;
FIG. 2 is a schematic view, partly in section, highlighting the internal structure of the mounting plate of an embodiment of the present application, and is intended to show the structure of the cross plate and the skid bar mounted at the mounting plate;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
fig. 4 is an enlarged schematic view of a portion B in fig. 2.
Description of the reference numerals: 1. an injector body; 2. a needle cylinder; 21. a support flange; 3. a plunger; 31. mounting a plate; 311. an arc-shaped slot; 3111. a card slot; 3112. a rolling groove; 312. a yielding groove; 313. a baffle plate; 314. an extension flange; 315. a sliding groove; 4. a positioning mechanism; 41. positioning blocks; 42. a limiting plate; 5. a movable structure; 51. a connecting rod; 511. a transverse plate; 52. a slide bar; 521. positioning a groove; 522. an extension spring; 523. a protrusion; 5231. an inclined surface; 53. a lifting block; 531. a chamfer plane; 6. a push rod; 61. a groove; 7. a connecting structure; 71. inserting a rod; 72. a movable groove; 8. a fixed structure; 81. bending the rod; 811. a vertical rod; 82. a matching block; 83. a mating groove; 9. pressing a plate; 91. and (4) a roller.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The embodiment of the application discloses an injector for puncture. Referring to fig. 1, the injection device comprises an injection device body 1, wherein a positioning mechanism 4 is arranged on the injection device body 1, the injection device body 1 comprises a needle cylinder 2 and a plunger 3 penetrating into the needle cylinder 2, the positioning mechanism 4 enables the plunger 3 to be conveniently positioned after moving relative to the needle cylinder 2, and a stable negative pressure environment can be maintained in the needle cylinder 2 without labor of hands.
Referring to fig. 1, a mounting plate 31 is fixed at the head of a plunger 3, a positioning mechanism 4 includes a positioning block 41 connected to the plunger 3 through a movable structure 5, the movable structure 5 includes a connecting rod 51 mounted outside the mounting plate 31, and the connecting rod 51 can rotate circumferentially along the side wall of the mounting plate 31; the upper part of the connecting rod 51 is bent to form a transverse plate 511 connected with the side wall of the mounting plate 31, and the positioning block 41 is fixed at the bottom of the connecting rod 51 and is positioned at one side close to the needle cylinder 2; thereby, the positioning block 41 is supported by the extension of the horizontal plate 511 and the connecting rod 51 and the positioning block 41 is corresponded to the sidewall of the cylinder 2.
Referring to fig. 1, an extension flange 314 is relatively fixed on a side wall of the mounting plate 31, and the side wall of the extension flange 314 is arc-shaped; in the process of pulling the plunger 3 outwards, an operator needs to hold the B-ultrasonic probe by one hand, only can operate and push the connecting rod 51 and the positioning block 41 by one hand, and the extension flange 314 extends the area of the mounting plate 31 to provide a larger support area for one-hand support, so that the plunger 3 can be prevented from sucking backwards during one-hand operation, and the adjustment and positioning of the connecting rod 51 and the positioning block 41 can be realized; the radiused side walls of the extended flange 314 reduce discomfort from contact by a human hand.
Referring to fig. 1, the needle cylinder 2 is formed with a support flange 21 on one side of the connecting rod 51 on the end side wall thereof, and it is noted that graduation marks are provided on the other side of the side wall of the needle cylinder 2 opposite to the connecting rod 51 and the support flange 21, thereby providing a space for the provision of the connecting rod 51 and avoiding the blocking of the graduation marks by providing the support flange 21, which is conventionally symmetrical, to be one-sided.
Referring to fig. 1, the positioning mechanism 4 further includes a position-limiting plate 42 fixed on the outer sidewall of the syringe 2 at intervals along the extending direction of the syringe 2, and the bottom of the positioning block 41 is abutted and positioned on the position-limiting plate 42, so that after the plunger 3 is pulled out from the syringe 2, the plunger 3 is stably positioned by the abutting and matching of the positioning block 41 and the position-limiting plate 42, and the burden of the hand for maintaining for a long time is reduced while a stable negative pressure state is provided in the suction process.
Referring to fig. 1 and 2, the movable structure 5 further includes a sliding rod 52, an arc-shaped slot 311 is formed in the mounting plate 31, and the sliding rod 52 is located in the mounting plate 31 and can slide along the circumferential direction of the arc-shaped slot 311; the transverse plate 511 is movably connected with a push rod 6, the end part of the sliding rod 52 close to the transverse plate 511 is provided with a positioning groove 521, one end of the push rod 6 is inserted and positioned in the positioning groove 521, and the other end of the push rod 6 penetrates through the transverse plate 511, so that when the push rod 6 is pushed outwards from the transverse plate 511, the sliding rod 52 can be driven to slide.
Referring to fig. 1 and 2, an end of the sliding rod 52 away from the transverse plate 511 is fixed with a tension spring 522 abutting against an inner wall of the arc-shaped slot 311, so that the sliding rod 52 can slide in the longitudinal direction parallel to the extending direction of the transverse plate 511 in the mounting plate 31; the side wall of the mounting plate 31 is provided with an abdicating groove 312 communicated with the arc-shaped groove 311, when the push rod 6 extrudes the sliding rod 52, the sliding rod 52 slides along the arc-shaped groove 311, and the push rod 6 can be positioned in the abdicating groove 312 and slide along the abdicating groove 312.
Referring to fig. 2, a pressing plate 9 is fixed at one end of the extension spring 522 close to the inner wall of the arc-shaped groove 311, a roller 91 is fixed on the pressing plate 9, and a rolling groove 3112 for the roller 91 to roll is formed on the inner wall of the arc-shaped groove 311, so that the sliding rod 52 can be assisted to slide along the circumferential direction of the arc-shaped groove 311.
Referring to fig. 2 and 3, the movable structure 5 further includes a lifting block 53 movably connected above the sliding rod 52, and two ends of the upper portion of the arc-shaped groove 311 are both communicated with a clamping groove 3111.
Referring to fig. 1 and 3, when the positioning block 41 abuts against the limiting plate 42, the lifting block 53 is located at one end of the arc-shaped slot 311 close to the limiting plate 42 and is clamped in the corresponding slot 3111, thereby positioning the positioning block 41 and reducing the situation that the positioning block 41 rotates and is staggered from the limiting plate 42 due to mistaken touch to destroy the negative pressure in the syringe 2.
Referring to fig. 2 and 3, a protrusion 523 is formed at the rear end of the upper side wall of the slide rod 52, an inclined surface 5231 extending from bottom to top towards the direction close to the inside of the mounting plate 31 is formed on the side wall of the protrusion 523 close to the lifting block 53, and a chamfered surface 531 matched with the inclined surface 5231 is correspondingly formed on the side wall of the lifting block 53; when the extension spring 522 is naturally extended, the inclined plane 531 abuts against the highest point of the inclined plane 5231, and the lifting block 53 is clamped in the clamping groove 3111.
Referring to fig. 2 and 3, the lifting block 53 is connected to the sliding rod 52 through the connecting structure 7, the connecting structure 7 includes an inserting rod 71 fixed to a side wall of the lifting block 53 and a movable groove 72 opened on the sliding rod 52, the inserting rod 71 extends downward and is inserted into the movable groove 72, and when the lifting block 53 is lifted in the slot 3111, the inserting rod 71 can be lifted in the movable groove 72; and when the sliding rod 52 moves longitudinally relative to the lifting block 53, the movable slot 72 provides a space for the transverse plate 511 to slide longitudinally, so that the connection between the lifting block 53 and the sliding rod 52 is maintained, and the overall structure is more reasonable.
Referring to fig. 2 and 3, a baffle 313 is formed in the mounting plate 31 on a side of the insertion rod 71 away from the lifting block 53, and the baffle 313 abuts against a side wall of the insertion rod 71; the lifting block 53 is limited by the baffle 313, so that the lifting block 53 can slide to a position corresponding to the slot 3111 and move upwards to be positioned in the slot 3111 in the resetting process of the extension spring 522.
Referring to fig. 2, the cross plate 511 is mounted to the mounting plate 31 by the fixing structure 8; the fixing structure 8 comprises a bending rod 81, a matching block 82 and a matching groove 83, one end of the bending rod 81 is fixed on the transverse plate 511, the other end of the bending rod extends towards the direction close to the mounting plate 31 and can move, and the bending rod 81 is relatively arranged on the side wall of the transverse plate 511 at equal intervals; the matching block 82 is vertically fixed at the movable end of the bending rod 81, and the matching grooves 83 are oppositely arranged on the side wall of the mounting plate 31; when the two opposite bending rods 81 are squeezed by hands in opposite directions to deform the bending rods, the matching blocks 82 can be inserted into the corresponding matching grooves 83, after the acting force of the hands is removed, the bending rods 81 reset, and the matching blocks 82 are clamped and positioned in the matching grooves 83.
Referring to fig. 1 and 2, a sliding groove 315 for sliding the bending rod 81 is formed on a side wall of the mounting plate 31 so that the bending rod 81 can move in accordance with the movement of the connection rod 51.
Referring to fig. 2 and 4, a groove 61 is formed above the push rod 6, the bending rod 81 on the upper portion of the transverse plate 511 extends into the transverse plate 511 to form a vertical rod 811 inserted into the groove 61, the connection of the push rod 6 in the transverse plate 511 is maintained through the vertical rod 811, and the push rod 6 cannot easily fall out; the vertical rod 811 can slide along the groove 61, thereby avoiding obstructing the sliding action of the push rod 6; it should be noted that the engaging groove 83 extends arcuately on the side wall of the mounting plate 31, so that the engaging block 82 can be slidably engaged along the engaging groove 83 with the sliding movement of the push rod 6.
The working process of the embodiment is as follows:
initially, the connecting rod 51 and the positioning block 41 are located on one side of the mounting plate 31 away from the limiting plate 42, and the lifting block 53 is clamped in the corresponding clamping groove 3111, so that the phenomenon that the connecting rod 51 is touched by mistake in the insertion process of the plunger 3 to rotate, and the insertion process of the plunger 3 is hindered is avoided; the plunger 3 is inserted into the syringe 2 until the positioning block 41 is located at the adjacent horizontal position of the corresponding limiting plate 42, at this time, the push rod 6 is pressed to move the connecting rod 51 and the positioning block 41 to the side close to the limiting plate 42, and the bottom of the positioning block 41 abuts against the corresponding limiting plate 42.
In the process of puncture operation, when the plunger 3 needs to be pulled out for suction, an operator respectively holds the needle cylinder 2 and the plunger 3 by hands, presses the push rod 6, compresses the extension spring 522, enables the lifting block 53 to descend from the clamping groove 3111 and to be separated, keeps the pressing state of the push rod 6, then rotates the connecting rod 51 and the positioning block 41 out of the limiting plate 42, and pulls out the plunger 3 in the vertical direction; it should be noted that, in this process, the connecting rod 51 and the positioning block 41 do not need to be rotated to the other end of the mounting plate 31 for fixing, so that the plunger 3 is rotated again after being pulled out to a desired position until the bottom of the positioning block 41 abuts against the corresponding limiting plate 42; after the positioning block 41 is correspondingly abutted against the limiting plate 42, the inserting rod 71 is abutted against the baffle 313, at this time, the push rod 6 is loosened, and under the abutting action of the baffle 313, the inserting rod 71 drives the lifting block 53 to ascend and be clamped in the clamping groove 3111, so that the positioning of the plunger 3 relative to the needle cylinder 2 is realized.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An injector for puncture, comprising an injector body (1), characterized in that: the injection syringe is characterized in that a positioning mechanism (4) is arranged on the injection syringe body (1), the injection syringe body (1) comprises a needle cylinder (2) and a plunger (3) penetrating through the needle cylinder (2), the positioning mechanism (4) comprises limiting plates (42) fixed on the outer side wall of the needle cylinder (2) at intervals along the extending direction of the needle cylinder (2) and positioning blocks (41) installed on the plunger (3), and the positioning blocks (41) are abutted to the limiting plates (42); the positioning block (41) is connected to the plunger (3) through a movable structure (5).
2. A puncture syringe according to claim 1, characterized in that: the head of the plunger (3) is fixed with a mounting plate (31), the movable structure (5) comprises a sliding rod (52) movably connected in the mounting plate (31) and a connecting rod (51) arranged outside the mounting plate (31), the positioning block (41) is fixed at the bottom of the connecting rod (51), and the connecting rod (51) is connected with the sliding rod (52) in a matching manner; the sliding rods (52) can transversely slide in the mounting plate (31) and are respectively positioned at two ends in the mounting plate (31).
3. A puncture syringe according to claim 2, characterized in that: an arc-shaped groove (311) for sliding the sliding rod (52) in the circumferential direction is formed in the mounting plate (31), the movable structure (5) further comprises a lifting block (53), two ends of the upper portion of the arc-shaped groove (311) are communicated with clamping grooves (3111), and the lifting block (53) is movably connected to the sliding rod (52) through a connecting structure (7) and can be clamped in the clamping grooves (3111); when the positioning block (41) is abutted to the limiting plate (42), the lifting block (53) is positioned at one end, close to the limiting plate (42), of the arc-shaped groove (311) and clamped in the clamping groove (3111).
4. A puncture syringe according to claim 3, characterized in that: an extension spring (522) abutted to the inner wall of the arc-shaped groove (311) is fixed on the sliding rod (52), a protrusion (523) is formed on the side wall of the sliding rod (52), an inclined surface (5231) extending from bottom to top towards the direction close to the inside of the mounting plate (31) is formed on the side wall, close to the lifting block (53), of the protrusion (523), and a chamfer surface (531) matched with the inclined surface (5231) is correspondingly formed on the side wall of the lifting block (53); when the extension spring (522) naturally extends, the inclined plane (531) abuts against the highest point of the inclined plane (5231), and the lifting block (53) is clamped in the clamping groove (3111).
5. A puncture syringe according to claim 3, characterized in that: the connecting structure (7) comprises an inserted bar (71) fixed on the side wall of the lifting block (53) and a movable groove (72) formed in the sliding bar (52), the inserted bar (71) extends and is inserted into the movable groove (72), the inserted bar (71) lifts along the movable groove (72), and the inserted bar (71) can longitudinally slide along the movable groove (72); a baffle (313) is formed in the mounting plate (31) and on one side, away from the lifting block (53), of the insertion rod (71), and the baffle (313) abuts against the side wall of the insertion rod (71).
6. A puncture syringe according to claim 4, characterized in that: the upper part of the connecting rod (51) is bent to form a transverse plate (511) connected to the mounting plate (31) through a fixing structure (8), a push rod (6) abutted against the sliding rod (52) is movably connected in the transverse plate (511), a positioning groove (521) for inserting one end of the push rod (6) is formed in the end part of the sliding rod (52), and the other end of the push rod (6) penetrates through the transverse plate (511); offer on the lateral wall of mounting panel (31) with the groove of stepping down (312) of arc wall (311) intercommunication, push rod (6) can be followed groove of stepping down (312) and slided.
7. A puncture syringe according to claim 6, characterized in that: the fixing structure (8) comprises a bending rod (81), a matching block (82) and a matching groove (83), one end of the bending rod (81) is fixed on the transverse plate (511), the other end of the bending rod is movable, and the bending rod (81) is oppositely arranged at the upper end and the lower end of the transverse plate (511) at equal intervals; the matching block (82) is vertically fixed at the movable end of the bending rod (81), and the matching grooves (83) are oppositely arranged on the side wall of the mounting plate (31); when the bending rod (81) deforms, the matching block (82) can be inserted into and clamped and positioned in the matching groove (83); seted up recess (61) on push rod (6), a bending rod (81) extends to diaphragm (511) and forms montant (811), montant (811) insert recess (61) and can follow recess (61) and slide.
8. A puncture syringe according to claim 2, characterized in that: an extension flange (314) is relatively fixed on the side wall of the mounting plate (31), and the side wall of the extension flange (314) is arc-shaped.
9. A puncture syringe according to claim 4, characterized in that: one end of the extension spring (522) close to the inner wall of the arc-shaped groove (311) is fixed with a pressing plate (9), a roller (91) is fixed on the pressing plate (9), and a rolling groove (3112) for the roller (91) to roll is formed in the inner wall of the arc-shaped groove (311).
10. A puncture syringe according to claim 7, characterized in that: a supporting flange (21) is formed on the side wall of the end part of the needle cylinder (2) at the position staggered from the connecting rod (51); scale marks are arranged on the other side of the side wall of the needle cylinder (2) opposite to the connecting rod (51) and the supporting flange (21); the bending rods (81) can slide along the side wall of the mounting plate (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210876975.5A CN115177335A (en) | 2022-07-25 | 2022-07-25 | Syringe for puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210876975.5A CN115177335A (en) | 2022-07-25 | 2022-07-25 | Syringe for puncture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115177335A true CN115177335A (en) | 2022-10-14 |
Family
ID=83520487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210876975.5A Pending CN115177335A (en) | 2022-07-25 | 2022-07-25 | Syringe for puncture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115177335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115990303A (en) * | 2023-03-23 | 2023-04-21 | 山东安得医疗用品股份有限公司 | Sliding block type negative pressure suction injector |
Citations (6)
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|---|---|---|---|---|
| WO2012148043A1 (en) * | 2011-04-26 | 2012-11-01 | Lee Hee Young | Auxiliary device for generating negative pressure and positive pressure for syringe |
| CN208678003U (en) * | 2017-09-12 | 2019-04-02 | 肖海敏 | Syringe |
| CN208989905U (en) * | 2018-05-29 | 2019-06-18 | 无锡市儿童医院 | A kind of paediatrics special negative pressure syringe |
| CN111658847A (en) * | 2020-07-09 | 2020-09-15 | 北京大学深圳医院 | Multi-section type syringe |
| CN216603690U (en) * | 2021-12-09 | 2022-05-27 | 玉溪沃森生物技术有限公司 | Syringe for mouse brain compensation and toxicity attack |
| CN216908894U (en) * | 2021-11-15 | 2022-07-08 | 四川科信生物科技有限公司 | Self-locking medical balloon dilatation pressure pump |
-
2022
- 2022-07-25 CN CN202210876975.5A patent/CN115177335A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012148043A1 (en) * | 2011-04-26 | 2012-11-01 | Lee Hee Young | Auxiliary device for generating negative pressure and positive pressure for syringe |
| CN208678003U (en) * | 2017-09-12 | 2019-04-02 | 肖海敏 | Syringe |
| CN208989905U (en) * | 2018-05-29 | 2019-06-18 | 无锡市儿童医院 | A kind of paediatrics special negative pressure syringe |
| CN111658847A (en) * | 2020-07-09 | 2020-09-15 | 北京大学深圳医院 | Multi-section type syringe |
| CN216908894U (en) * | 2021-11-15 | 2022-07-08 | 四川科信生物科技有限公司 | Self-locking medical balloon dilatation pressure pump |
| CN216603690U (en) * | 2021-12-09 | 2022-05-27 | 玉溪沃森生物技术有限公司 | Syringe for mouse brain compensation and toxicity attack |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115990303A (en) * | 2023-03-23 | 2023-04-21 | 山东安得医疗用品股份有限公司 | Sliding block type negative pressure suction injector |
| CN115990303B (en) * | 2023-03-23 | 2023-06-27 | 山东安得医疗用品股份有限公司 | Sliding block type negative pressure suction injector |
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