CN112023192B - Medical parathyroid gland tissue injector - Google Patents
Medical parathyroid gland tissue injector Download PDFInfo
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- CN112023192B CN112023192B CN202011010292.9A CN202011010292A CN112023192B CN 112023192 B CN112023192 B CN 112023192B CN 202011010292 A CN202011010292 A CN 202011010292A CN 112023192 B CN112023192 B CN 112023192B
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- Prior art keywords
- injection
- plug
- blade
- movable block
- groove
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
Abstract
The invention relates to the technical field of medical instruments, and relates to a medical parathyroid tissue injector which comprises an injection tube, a piston, a motor, a blade and a driving mechanism, wherein the injection tube is connected with the piston; the piston comprises a plug body and a push-pull rod, the plug body is used for being matched with the inner wall of the injection cylinder in a circumferential sealing mode, and the push-pull rod is used for driving the plug body to move axially along the inner wall of the injection cylinder; one end of the plug body is provided with an accommodating groove; the bottom surface of the accommodating groove is provided with a through hole; the motor comprises a machine body and a motor shaft arranged on the machine body, and one end of the motor shaft is used for penetrating through the through hole and is connected with the blade; the driving mechanism is used for driving the machine body to move relative to the plug body so as to drive the blade to extend out of or retract into the accommodating groove; and when the accommodating groove is retracted, the blade is in circumferential sealing fit with the groove wall of the accommodating groove. According to the technical scheme of the invention, when injecting the parathyroid homogenate, the piston can be pushed to the bottom of the injection cylinder, so that the residue of the parathyroid homogenate in the injection cylinder can be reduced.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a medical parathyroid gland tissue injector.
Background
Parathyroid glands are located near the thyroid gland, usually in two pairs, one above the other, behind the lateral lobes of the thyroid gland, sometimes hidden within the thyroid parenchyma, and secrete parathyroid hormone. Among them, the disorder of parathyroid hormone secretion causes the abnormality of the ratio of calcium to phosphorus in blood, and therefore, the determination of parathyroid hormone has important clinical value for early prediction of the onset of hypocalcemia after thyroidectomy. In previous experiments or testing procedures, it was often necessary to use a homogenate breaker to break up the parathyroid glands.
As shown in fig. 1, a conventional tissue disruptor includes an injector 10 and a disruptor 20, the injector 10 includes an injection tube 11 and a push rod 13 with a rubber plug 12 at the front end thereof, one end of the injection tube 11 is an open end 11a, the other end is an injection end 11b, the injection end 11b is provided with a liquid discharge tube 14 connected with the injection needle, and the push rod 13 is used for being fixedly connected with the rubber plug 12 to push the rubber plug 12 to move along the inner wall of the injection tube 11. The knapper 20 comprises a motor 21 and a stirring shaft 22 in transmission connection with the motor 21, the end of the stirring shaft 22 is provided with a blade 23, the aforementioned liquid discharge pipe 14 is eccentrically arranged at the injection end 11b of the injection tube 11, the stirring shaft 22 is coaxially arranged at the axial center of the injection end 11b, and the blade 23 is arranged in the injection chamber close to the injection end 11 b.
The above-described tissue disruptor has at least the following disadvantages when in use: because blade 23 sets up in the injection chamber, blade 23 can hinder rubber buffer 12's promotion for rubber buffer 12 can't push away the bottom of injection tube 11, leads to partly broken parathyroid homogenate can remain in injection tube 11 when the injection, thereby influences the measurement accuracy of experiment, so need improve to this kind of condition in a short time.
Disclosure of Invention
In view of this, the present invention provides a medical parathyroid gland tissue injector, and mainly aims to solve the technical problem of how to reduce the residue of parathyroid gland homogenate in an injection tube during injection, and improve the experimental measurement precision.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
the embodiment of the invention provides a medical parathyroid gland tissue injector, which comprises an injection tube, a piston, a motor, a blade, a movable block and a driving mechanism, wherein the injection tube is connected with the piston; one end of the injection tube is open, and the other end of the injection tube is provided with an injection port; the piston comprises a plug body and a push-pull rod, the plug body is used for being in circumferential sealing fit with the inner wall of the injection cylinder, and the push-pull rod is used for driving the plug body to move axially along the inner wall of the injection cylinder; an accommodating groove is formed in one end, close to the bottom of the injection tube, of the plug body; the bottom surface of the accommodating groove is provided with a through hole;
the motor comprises a machine body and a motor shaft arranged on the machine body, the machine body is arranged on one side of the plug body, which is far away from the bottom of the injection cylinder, and one end of the motor shaft is used for penetrating through the through hole and is connected with the blade; the driving mechanism is used for driving the machine body to move relative to the plug body so as to drive the blade to extend out of or retract into the accommodating groove; when the blade retracts into the accommodating groove, the blade is in circumferential sealing fit with the groove wall of the accommodating groove;
the movable block is provided with a plug and an injection joint, and both the plug and the injection joint can stretch relative to the movable block; the movable block is arranged at the injection port end of the injection tube, so that when the movable block moves to a first position, the plug is inserted into the injection port to plug the injection port; and moving to a second position, inserting the injection connector into the injection port and into circumferential sealing engagement with the injection port.
Optionally, the injection port end of the injection tube is provided with another sliding groove, and the movable block is in sliding fit with the another sliding groove to move to the first position and the second position along the another sliding groove.
Optionally, a first mounting groove is formed in the movable block, a first through hole through which the plug passes is formed in the bottom of the first mounting groove, and a first flange used for abutting against the bottom surface of the first mounting groove is formed in the side wall of the plug;
the movable block is also provided with a cover plate, the cover plate is used for covering the opening of the first mounting groove, and the cover plate is provided with a third through hole for the plug to pass through;
and a first elastic piece is arranged in the first mounting groove and used for providing the force for inserting the plug into the injection port.
Optionally, a second mounting groove is formed in the movable block, a second through hole for the injection connector to pass through is formed in the bottom of the second mounting groove, and a second flange for abutting against the bottom surface of the second mounting groove is formed in the side wall of the injection connector;
the movable block is also provided with a cover plate, the cover plate is used for covering the opening of the second mounting groove, and the cover plate is provided with a fourth through hole for the injection connector to pass through;
and a second elastic piece is arranged in the second mounting groove and used for providing the force for inserting the injection joint into the injection port.
By the technical scheme, the medical parathyroid gland tissue injector at least has the following beneficial effects:
1. the parathyroid gland can be fully broken, and the parathyroid gland homogenate is ejected from the injection tube;
2. when injecting the parathyroid gland homogenate, the blade can be retracted into the piston to form a part of the piston, and the piston can be pushed to the bottom of the injection tube, so that the residue of the parathyroid gland homogenate in the injection tube can be reduced, and the experimental measurement precision is improved;
3. when the parathyroid gland is broken, the injection port can be blocked by the plug, so that part of the parathyroid gland falls into the injection port and cannot be broken, and the breaking effect of the parathyroid gland can be improved.
4. The injection joint can be dismantled to can change the injection joint of different thickness specifications according to actual need.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a prior art tissue disruptor;
FIG. 2 is an exploded view of a medical parathyroid tissue injector according to one embodiment of the present invention;
FIG. 3 is a schematic assembly view of the parathyroid tissue injector of FIG. 2;
FIG. 4 is a half sectional view of the parathyroid tissue injector of FIG. 3;
FIG. 5 is an enlarged schematic view at A in FIG. 4;
fig. 6 is an enlarged schematic view at B in fig. 4.
Reference numerals: 1. an injection tube; 2. a piston; 3. a motor; 4. a blade; 5. a drive rod; 6. a resilient arm; 7. a ferrule; 8. a second connecting ring; 9. a turntable; 10. a connecting rod; 11. a first connecting ring; 12. a movable block; 13. a plug; 14. an injection fitting; 15. the other end plate; 16. an end plate; 17. a first elastic member; 18. a second elastic member; 19. a cover plate; 21. a plug body; 22. a push-pull rod; 31. a body; 32. a motor shaft (32); 51. a stopper; 91. a hook is clamped; 92. a via hole; 100. another chute; 101. a first hook; 102. a second hook; 103. an injection port; 131. a first flange; 141. a second flange; 161. another via hole; 211. accommodating grooves; 212. a homogenate channel; 213. a through hole; 214. an open cavity; 221. another hook; 212. another card slot; 311. salient points; 312. a slider; 313. an annular groove; 321. one end of the motor shaft; 322. the other end of the motor shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 2 and 3, one embodiment of the present invention provides a medical parathyroid tissue injector, which comprises a syringe barrel 1, a piston 2, a motor 3, a blade 4 and a driving mechanism. The syringe 1 is open at one end and has an injection port 103 at the other end (as shown in fig. 4). The plunger 2 comprises a plug body 21 and a push-pull rod 22, the plug body 21 is used for circumferential sealing engagement with the inner wall of the syringe 1, for example, the two can be sealed by surface contact. The stopper body 21 is also slidable in the axial direction of the syringe 1. The push-pull rod 22 is used to connect with the plug body 21, for example, the two can be clamped or fixedly connected by an integral molding method. The operator can manually operate the push-pull rod 22 to drive the stopper body 21 to move axially along the inner wall of the syringe 1. The stopper body 21 has a receiving groove 211 at an end thereof adjacent to the bottom of the syringe 1, and a through hole 213 is formed in a bottom surface of the receiving groove 211.
As shown in fig. 4, the motor 3 includes a body 31 and a motor shaft 32 disposed on the body 31, and the motor shaft 32 is a rotating shaft. The body 31 is arranged on the side of the plug body 21 away from the bottom of the syringe 1, and one end 321 of the motor shaft 32 is arranged to pass through the through hole 213 and is connected with the blade 4. The blade 4 can be fixed on the motor shaft 32 in a clamping manner, and when the motor 3 is started, the motor shaft 32 can drive the blade 4 to rotate together. The body 31 is movable relative to the plug 21, for example, slidable on the plug 21. The driving mechanism is used for driving the body 31 to move relative to the plug 21, so as to drive the blade 4 to extend out of or retract into the accommodating groove 211. When the blade 4 is retracted into the receiving groove 211, the blade 4 is in circumferential sealing engagement with the groove wall of the receiving groove 211.
In the above examples, the medical parathyroid gland tissue injector of the present invention has both functions of breaking up parathyroid gland and injecting parathyroid gland homogenate. When the smashing operation is performed, the machine body 31 can be driven to enable the blade 4 to extend out of the accommodating groove 211, and the motor shaft 32 drives the blade 4 to rotate to smash the parathyroid gland; when the injection operation is performed, the machine body 31 can be driven to move, so that the blade 4 retracts into the accommodating groove 211, then the plug body 21 is pushed to move through the push-pull rod 22, the plug body 21 is pushed to the bottom of the injection cylinder 1, and the parathyroid gland homogenate is completely ejected from the injection cylinder 1, so that the experimental precision can be greatly improved, and the experimental deviation caused by parathyroid gland homogenate residue is reduced.
In a specific application example, as shown in fig. 4, the motor 3 may be a double-headed motor, that is, the motor shaft 32 penetrates through both ends of the motor 3. The aforementioned driving mechanism may include a driving rod 5, one end of the driving rod 5 is provided with a chuck, and the driving rod 5 and the chuck may be relatively fixed, for example, they may be an integral structure. The driving rod 5 is used for clamping the other end 322 of the motor shaft 32 through the chuck to rotate the blade 4 to a set position opposite to the receiving groove 211. The driving rod 5 is further used for driving the body 31 to move along the axial direction of the injection cylinder 1 so as to drive the blade 4 to retract into the receiving groove 211 from the set position. Here, it should be noted that: since the insert 4 is a non-circular insert, the receiving groove 211 has a shape conforming to the shape of the insert 4. The blade 4 needs to be correctly aligned with the receiving groove 211 when retracting into the receiving groove 211, and in this example, when the driving rod 5 rotates through the other end 322 of the chuck clamping motor shaft 32, the driving rod can drive the blade 4 to be correctly aligned with the receiving groove 211, and then the body 31 is driven to move, and the body 31 can drive the blade 4 to smoothly retract into the receiving groove 211. The driving rod 5 has two purposes, and it can drive the other end 322 of the motor shaft 32 to rotate through the chuck, and can also drive the body 31 to move relative to the plug 21, so that the blade 4 can extend and retract relative to the accommodating groove 211.
In order to achieve the function of the driving rod 5 capable of rotating the other end 322 of the motor shaft 32 via the chuck, as shown in fig. 4 and 5, a collar 7 may be provided on the side of the body 31 facing away from the blade 4, and the driving rod 5 is used for passing through the collar 7. The aforementioned collet comprises a plurality of resilient arms 6, the number of resilient arms 6 being such that they are arranged around the drive rod 5. The elastic arms 6 are located on one side of the ferrule 7 close to the body 31 and are outwardly flared relative to the ferrule 7, preferably, the elastic arms 6 are mutually matched and flared outwardly. The driving rod 5 can move along the axial direction of the ferrule 7, and preferably, the ferrule 7 is sleeved on the driving rod 5 and connected with the machine body 31. The drive rod 5 can bring the elastic arm 6 closer to the ferrule 7 or further away from the ferrule 7. When the driving rod 5 drives the elastic arm 6 to approach the ferrule 7, the elastic arm 6 is pressed by the ferrule 7 to bend inward so as to clamp the other end 322 of the motor shaft 32, so that the driving rod 5 can drive the other end 322 of the motor shaft 32 to rotate together through the elastic arm 6 when rotating. The drive rod 5, when it moves the resilient arm 6 away from the collar 7, causes the resilient arm 6 to rebound to release the other end 322 of the motor shaft 32.
In a specific embodiment, as shown in fig. 4 and 5, when the driving rod 5 moves the elastic arm 6 upward, the ferrule 7 presses the elastic arm 6, so that the elastic arm 6 clamps the other end 322 of the motor shaft 32, and thus the driving rod 5 rotates to drive the motor shaft 32 to rotate together with the elastic arm 6; when the driving rod 5 drives the elastic arm 6 to move downwards, the ferrule 7 releases the elastic arm 6, and the elastic arm 6 rebounds and expands outwards again to release the motor shaft 32, so that the motor shaft 32 can rotate freely.
In the above example, when the driving rod 5 clamps the motor shaft 32 through the elastic arm 6, the frictional resistance between the elastic arm 6 and the collar 7 is large, and the driving rod 5 rotates the motor shaft 32 through the elastic arm 6 with large resistance, which is inconvenient to operate, so that the collar 7 is preferably a rotating collar. As shown in fig. 4 and 5, the side of the body 31 away from the blade 4 is further provided with a turntable 9, the other end 322 of the motor shaft 32 penetrates through the turntable 9, and the ferrule 7 is disposed on the turntable 9, for example, fixed on the turntable 9. Thus, when the driving rod 5 clamps the motor shaft 32 by the elastic arm 6 to rotate, the driving rod 5 can simultaneously drive the ferrule 7 to rotate together, so as to reduce the friction resistance caused by the movement of the elastic arm 6 relative to the ferrule 7.
As shown in fig. 4 and 5, the aforementioned rotary table 9 may include a table body and a hook 91 disposed at one end of the table body, and the hook 91 may be integrally formed on the table body. The disc body is provided with a through hole 92, the side wall of the machine body 31 is provided with an annular groove 313, the other end of the motor shaft 32 penetrates through the through hole 92 on the disc body, and the hook 91 on the disc body is used for being clamped in the annular groove 313 and can move along the circumferential direction of the annular groove 313. Wherein the disc is made rotatable relative to the body 31 by the arrangement in this example.
In order to facilitate the fixing of the ferrule 7 on the turntable 9, the ferrule 7 is connected to the body 31 by a connecting structure, which may include a connecting rod 10, a first connecting ring 11 and a second connecting ring 8, as shown in fig. 4 and 5. The first connecting ring 11 is fixed on the outer side of the ferrule 7, and the first connecting ring and the ferrule can be integrally injection-molded through connecting blocks. The second connecting ring 8 is fixed on the rotary table 9, and the second connecting ring and the rotary table can be integrally injection-molded through a connecting block. The connecting rod 10 has a first hook 101 at one end and a second hook 102 at the other end. The first hook 101 and the second hook 102 can be integrally formed on the connecting rod 10. The first hook 101 is used for being connected to the first connecting ring 11 in a clamping manner, and the other end of the first hook is used for being connected to the second connecting ring 8 in a clamping manner.
In the above example, the ferrule 7 can be sleeved on the driving rod 5, then the rotary table 9 is installed on the machine body 31, and then the ferrule 7 and the rotary table 9 are connected together through the connecting rod 10, so that the assembly and disassembly of the components are convenient.
In order to achieve the aforesaid another function of the driving rod 5, namely, the function of the driving rod 5 driving the body 31 to move along the axial direction of the syringe 1, as shown in fig. 5, when the elastic arm 6 is pressed by the ferrule 7 to clamp the other end 322 of the motor shaft 32, the driving rod 5 can drive the body 31 to move through the ferrule 7, so that the blade 4 retracts into the receiving slot 211. Specifically, when the driving rod 5 moves up, it drives the elastic arm 6 to clamp the motor shaft 32; when the driving rod 5 moves upwards continuously, the elastic arm 6 of the clamping motor shaft 32 reaches the deformation limit and cannot be bent and deformed continuously, the driving rod 5 and the ferrule 7 are axially fixed, and the driving rod 5 can drive the machine body 31 to move upwards through the ferrule 7, so that the blade 4 is retracted into the accommodating groove 211.
In the above example, the driving rod 5 can drive the body 31 to move along one side, such as upward, of the axial direction of the syringe 1. In order to realize the function that the driving rod 5 drives the body 31 to move along the other axial side of the syringe 1, for example, to the lower side, as shown in fig. 5, a stopper 51 may be disposed on the aforementioned driving rod 5, the stopper 51 is located on one side of the collar 7 away from the body 31, and the driving rod 5 pushes the collar 7 through the stopper 51, so that the body 31 drives the blade 4 to extend out of the receiving slot 211. Specifically, when the driving rod 5 moves downwards, the ferrule 7 can release the elastic arms 6, and the elastic arms 6 rebound and expand outwards; when the driving rod 5 moves downwards continuously, the stop 51 on the driving rod 5 abuts against the ferrule 7, and the ferrule 7 and the machine body 31 connected with the ferrule 7 can be pushed to move downwards, so that the blade 4 on the machine body 31 extends out of the accommodating groove 211.
As shown in fig. 4, an end of the push-pull rod 22 facing away from the plug body 21 may be provided with an end plate 16, the end plate 16 is provided with another through hole 161, and the driving rod 5 passes through the other through hole 161, so that the push-pull rod 22 and the driving rod 5 can be integrated into a whole, and the medical parathyroid tissue injector of the present invention is more compact.
As shown in fig. 4, the end of the driving rod 5 facing away from the chuck may be provided with another end plate 15, and the other end plate 15 may be detachably connected to the driving rod 5 by a screw or the like, so that the driving rod 5 may be passed out of the end plate 16 and then the other end plate 15 is installed, which has the effect of facilitating the installation of the driving rod 5 on the end plate 16.
The side wall of the other end plate 15 may be provided with anti-slip threads to facilitate the operator to screw the driving rod 5 through the other end plate 15.
As shown in fig. 4, the side of the plug body 21 facing away from the receiving groove 211 may be provided with an open cavity 214, and the body 31 is configured to be disposed in the open cavity 214, and the open cavity 214 may provide a housing protection for the motor 3.
The outer sidewall of the body 31 may be provided with a slider 312 (as shown in fig. 1), and the slider 312 may be integrally formed on the body 31. The wall of the open cavity 214 is provided with a sliding slot extending along the axial direction of the plug body 21, and the sliding block 312 is in sliding fit with the sliding slot to guide the movement of the machine body 31.
In order to keep the body 31 relatively stable after movement, it is preferable that the medical parathyroid tissue injector of the present invention further comprises a positioning structure for positioning the body 31 when the body 31 carries the blade 4 to extend out of or retract into the receiving groove 211. As shown in fig. 1, when the plug body 21 is provided with the open cavity 214, the positioning structure may include a positioning protruding point 311 and a positioning groove, the positioning protruding point 311 is disposed on an outer side wall of the body 31, for example, the positioning protruding point 311 is integrally formed on the outer side wall of the body 31, and the positioning groove is disposed on a cavity wall of the open cavity 214. Wherein, positioning groove includes first positioning groove and the second positioning groove that sets gradually along the axial of cock body 21, and location bump 311 is used for driving blade 4 at organism 31 and stretches out holding tank 211 when with first positioning groove joint, and drives blade 4 at organism 31 and retract holding tank 211 when with second positioning groove joint. Specifically, when the body 31 drives the blade 4 to extend out of the receiving slot 211, the positioning protrusion 311 on the body 31 is engaged with the first positioning groove, so that the body 31 and the plug 21 are relatively fixed, and the blade 4 on the body 31 can stably rotate. When the body 31 drives the blade 4 to retract into the receiving slot 211, the positioning protrusion 311 on the body 31 is engaged with the second positioning groove, so that the body 31 and the plug 21 are relatively fixed, and at this time, the plug 21 can drive the body 31 to perform an injection operation.
As shown in fig. 4, when the plug body 21 is provided with the open cavity 214, the plug body 21 may be further provided with a slurry homogenizing hole 212, one end of the slurry homogenizing hole 212 is communicated with the bottom surface of the receiving groove 211, and the other end is communicated with the top end of the open cavity 214 from the inside of the plug body 21. In this example, before the blade 4 is retracted into the receiving groove 211, the homogenate can be injected into the homogenate channel 212, and the homogenate flows out from the receiving groove 211 and flows onto the blade 4, so that the receiving groove 211 and the blade 4 can be washed by the homogenate, so as to facilitate the blade 4 to be seamlessly attached to the groove wall of the receiving groove 211 when retracted into the receiving groove 211. Wherein, the homogenate liquid flows into the injection cavity and then is mixed with the broken parathyroid gland, thus having the effect of conveniently injecting the parathyroid gland.
Further, the push-pull rod 22 is detachably connected to the plug body 21, so that the drive rod 5 can be installed before the push-pull rod 22 is installed, and if the push-pull rod 22 is installed first, the drive rod 5 cannot be installed effectively.
In order to achieve the effect of detachable and washable connection between the push-pull rod 22 and the plug body 21, as shown in fig. 5, another hook 221 may be disposed at one end of the push-pull rod 22, and another slot 212 is disposed on the plug body 21, where the another hook 221 is used to engage with the another slot 212. Of course, the positions of the other hook 221 and the other slot 212 may be changed, that is, the other slot 212 is disposed on the push-pull rod 22, and the other hook 221 is disposed on the plug body 21.
As shown in fig. 4, the medical parathyroid gland tissue injector of the present invention may further include a movable block 12, wherein the movable block 12 is provided with a plug 13 and an injection connector 14, and both the plug 13 and the injection connector 14 are capable of extending and retracting relative to the movable block 12. The movable block 12 is arranged at the injection port end of the injection tube 1, and the movable block 12 can move to a first position and a second position relative to the injection tube 1. When the movable block 12 moves to the first position, the plug 13 extends out relative to the movable block 12 and is inserted into the injection port 103 to plug the injection port 103; when the movable block 12 moves to the second position, the injection connector 14 extends relative to the movable block 12, is inserted into the injection port 103, and is in circumferential sealing fit with the injection port 103.
In the above example, during the breaking operation, the movable block 12 may be moved to the first position, and then the plug 13 is operated to insert the plug 13 into the injection port 103 to block the injection port 103, so as to prevent part of the parathyroid gland fragments from flowing into the injection port 103 and being unable to be sufficiently broken by the blade 4, thereby affecting the breaking effect; after the breaking operation is finished, the plug 13 can be pulled out of the injection port 103, then the movable block 12 is moved to the second position, the injection connector 14 is operated, the injection connector 14 is inserted into the injection port 103, the injection connector 14 is connected with an external injection needle, and the parathyroid gland homogenate in the injection tube 1 can be injected into an experimental subject.
According to actual conditions, an operator can operate the movable block 12 to drive the plug 13 or the injection connector 14 to be connected with the injection port 103, so that the operation is convenient.
In order to realize the moving function of the movable block 12, as shown in fig. 2, the injection port end of the injection cylinder 1 may be provided with another sliding slot 100, and the movable block 12 is slidably engaged with the other sliding slot 100 to move to the first position and the second position along the other sliding slot 100. Here, it should be noted that: the other sliding groove 100 may be a groove with a limiting structure, such as a dovetail groove, etc., and the movable block 12 has a shape adapted to the other sliding groove 100 to be clamped in the other sliding groove 100 and not to fall off the syringe 1 during the sliding process.
In order to realize the telescopic function of the plug 13, as shown in fig. 6, a first mounting groove may be disposed on the movable block 12, a first via hole for the plug 13 to pass through is disposed at the bottom of the first mounting groove, and a first flange 131 for abutting against the bottom surface of the first mounting groove is disposed on the side wall of the plug 13. The movable block 12 is further provided with a cover plate 19, the cover plate 19 is used for covering the opening of the first mounting groove, and the cover plate 19 is provided with a third through hole for the plug 13 to pass through. The first mounting groove is provided with a first elastic member 17, and the first elastic member 17 may be a spring or flexible plastic. The first elastic member 17 is located between the cover plate 19 and the first flange 131. Preferably, the first elastic element 17 is sleeved on the plug 13, and has one end abutting against the cover plate 19 and the other end abutting against the first flange 131. The first elastic member 17 is used to provide a force for inserting the stopper 13 into the injection port 103. Specifically, when the movable block 12 drives the plug 13 to move to a position opposite to the injection port 103, the first elastic member 17 can drive the plug 13 to automatically insert into the injection port 103, and at this time, the plug 13 is engaged with the limit structure on the other sliding slot 100, so as to position the movable block 12, and the movable block 12 can be fixed at the current position.
In order to realize the telescopic function of the injection connector 14, as shown in fig. 6, a second mounting groove is formed on the movable block 12, a second through hole for the injection connector 14 to pass through is formed in the bottom of the second mounting groove, and a second flange 141 for abutting against the bottom surface of the second mounting groove is formed on the side wall of the injection connector 14. The movable block 12 is further provided with a cover plate 19, the cover plate 19 is used for covering the opening of the second mounting groove, and the cover plate 19 is provided with a fourth through hole for the injection connector 14 to pass through. A second elastic member 18 is disposed in the second mounting groove, and the second elastic member 18 may be a spring or a flexible plastic. The second elastic member 18 is located between the cover plate 19 and the second flange 141. Preferably, the second elastic element 18 is sleeved on the plug 13, and has one end abutting against the cover plate 19 and the other end abutting against the second flange 141. The second elastic member 18 is used to provide a force for inserting the injection connector 14 into the injection port 103. Specifically, when the movable block 12 drives the injection connector 14 to move to be opposite to the injection port 103, the second elastic member 18 can drive the injection connector 14 to automatically insert into the injection port 103, and at this time, the injection connector 14 cooperates with a limiting structure on another sliding chute 100 to position the movable block 12, so that the movable block 12 can be fixed at the current position.
Here, it should be noted that: the cover plate 19 is detachable relative to the movable block 12, for example, the cover plate 19 may be connected to the movable block 12 by screws, so that the choke plug 13 and the injection connector 14 can be detached from the movable block 12 for easy replacement. For example, the injection connector 14 with different thickness specifications can be replaced according to actual needs to adapt to needles with different thicknesses.
The working principle and preferred embodiments of the present invention are described below.
The invention aims to design a medical parathyroid gland tissue injector which has the functions of breaking and injecting parathyroid gland. When in use, the piston 2 is firstly taken out of the injection tube 1, then the prepared parathyroid gland is put in, and the piston 2 is inserted; pushing the driving rod 5, the driving rod 5 drives the body 31 to push the blade 4 out of the accommodating groove 211; then moving the movable block 12, inserting the plug 13 into the injection port 103, and plugging the injection port 103 by the plug 13; then the motor 3 is started, the motor shaft 32 drives the blade 4 to rotate, the blade 4 fully breaks up parathyroid gland in the injection tube 1, and after the parathyroid gland is broken up, the driving rod 5 is pulled upwards, so that the elastic arm 6 on the driving rod 5 clamps the other end 322 of the motor shaft 32; then the driving rod 5 is rotated, the driving rod 5 drives the other end 322 of the motor shaft 32 to rotate together, so that the blade 4 on the motor shaft 32 is correctly aligned with the accommodating groove 211, then the driving rod 5 is continuously pulled upwards, the driving rod 5 drives the machine body 31 to ascend together through the ferrule 7 and the turntable 9, so that the blade 4 is retracted into the accommodating groove 211, at the moment, the blade 4 just blocks the accommodating groove 211, and the two are in sealing fit in the circumferential direction; then pulling the plug 13 out of the injection port 103, moving the movable block 12 to insert the injection connector 14 into the injection port 103, wherein the injection connector 14 is connected with an external injection needle; then the push-pull rod 22 is pressed, the push-pull rod 22 drives the piston 2 to move, so that the broken parathyroid gland homogenate in the injection tube 1 is injected into the experimental subject from the injection port 103.
Here, it should be noted that: in the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (2)
1. A medical parathyroid tissue injector is characterized by comprising an injection tube (1), a piston (2), a motor (3), a blade (4), a movable block (12) and a driving mechanism; one end of the injection tube (1) is open, and the other end of the injection tube is provided with an injection port (103); the piston (2) comprises a plug body (21) and a push-pull rod (22), the plug body (21) is used for being in circumferential sealing fit with the inner wall of the injection cylinder (1), and the push-pull rod (22) is used for driving the plug body (21) to axially move along the inner wall of the injection cylinder (1); one end of the plug body (21) close to the bottom of the injection cylinder (1) is provided with an accommodating groove (211); the bottom surface of the accommodating groove (211) is provided with a through hole (213);
the motor (3) comprises a machine body (31) and a motor shaft (32) arranged on the machine body (31), the machine body (31) is arranged on one side of the plug body (21) departing from the bottom of the injection cylinder (1), and one end (321) of the motor shaft (32) is used for penetrating through the through hole (213) and is connected with the blade (4); the driving mechanism is used for driving the machine body (31) to move relative to the plug body (21) so as to drive the blade (4) to extend out of or retract into the accommodating groove (211); when the blade (4) is retracted into the accommodating groove (211), the blade is circumferentially matched with the groove wall of the accommodating groove (211) in a sealing manner;
a plug (13) and an injection joint (14) are arranged on the movable block (12), and both the plug (13) and the injection joint (14) can stretch relative to the movable block (12); the movable block (12) is arranged at the injection port end of the injection tube (1) and is used for inserting a plug (13) into the injection port (103) to plug the injection port (103) when moving to a first position; and when moving to the second position, the injection connector (14) is inserted into the injection port (103) and is in circumferential sealing fit with the injection port (103);
a first mounting groove is formed in the movable block (12), a first through hole for a plug (13) to penetrate through is formed in the bottom of the first mounting groove, and a first flange (131) used for abutting against the bottom surface of the first mounting groove is formed in the side wall of the plug (13);
a cover plate (19) is further arranged on the movable block (12), the cover plate (19) is used for covering the opening of the first mounting groove, and a third through hole for the plug (13) to penetrate through is formed in the cover plate (19);
a first elastic piece (17) is arranged in the first mounting groove, and the first elastic piece (17) is used for providing a force for inserting the plug (13) into the injection port (103).
2. The medical parathyroid tissue injector of claim 1,
the injection port end of the injection cylinder (1) is provided with another sliding groove (100), and the movable block (12) is in sliding fit with the other sliding groove (100) so as to move to the first position and the second position along the other sliding groove (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011010292.9A CN112023192B (en) | 2020-09-23 | 2020-09-23 | Medical parathyroid gland tissue injector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011010292.9A CN112023192B (en) | 2020-09-23 | 2020-09-23 | Medical parathyroid gland tissue injector |
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| CN112023192B true CN112023192B (en) | 2022-03-22 |
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| CN104758176A (en) * | 2015-03-25 | 2015-07-08 | 中国人民解放军第三军医大学第一附属医院 | Homogenate breaking and injecting device |
| CN106466501A (en) * | 2015-08-17 | 2017-03-01 | 朴志勋 | Dual chamber syringe |
| CN209187764U (en) * | 2018-08-23 | 2019-08-02 | 烟台毓璜顶医院 | A kind of blood vessel interventional therapy apparatus |
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| GB0806814D0 (en) * | 2008-04-15 | 2008-05-14 | Medical House Plc The | Improved autoinjector |
| CN106552312B (en) * | 2016-12-07 | 2023-08-22 | 杜忠心 | Negative pressure flusher |
| US10940089B2 (en) * | 2017-05-17 | 2021-03-09 | Ghanem Abusbeih | Medication crushing, grinding, and administering syringe and method of use |
| CN108814692B (en) * | 2018-05-22 | 2019-08-09 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind subtracting device of tyre |
| CN209789974U (en) * | 2019-02-22 | 2019-12-17 | 和携科技有限公司 | Bone joint lacuna injection transplantation needle of stem cell preparation |
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2020
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758176A (en) * | 2015-03-25 | 2015-07-08 | 中国人民解放军第三军医大学第一附属医院 | Homogenate breaking and injecting device |
| CN106466501A (en) * | 2015-08-17 | 2017-03-01 | 朴志勋 | Dual chamber syringe |
| CN209187764U (en) * | 2018-08-23 | 2019-08-02 | 烟台毓璜顶医院 | A kind of blood vessel interventional therapy apparatus |
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| CN112023192A (en) | 2020-12-04 |
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