CN115779192A - Retina blood vessel injection device with adsorption function - Google Patents
Retina blood vessel injection device with adsorption function Download PDFInfo
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- CN115779192A CN115779192A CN202211435271.0A CN202211435271A CN115779192A CN 115779192 A CN115779192 A CN 115779192A CN 202211435271 A CN202211435271 A CN 202211435271A CN 115779192 A CN115779192 A CN 115779192A
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- needle tube
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- blood vessel
- outer needle
- injection device
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- 238000002347 injection Methods 0.000 title claims abstract description 37
- 239000007924 injection Substances 0.000 title claims abstract description 37
- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 26
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 25
- 210000001525 retina Anatomy 0.000 title claims description 3
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 210000001210 retinal vessel Anatomy 0.000 claims abstract description 18
- 230000000670 limiting effect Effects 0.000 claims description 22
- 239000003814 drug Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000002792 vascular Effects 0.000 claims description 2
- 229940079593 drug Drugs 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000006978 adaptation Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 206010038903 Retinal vascular occlusion Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002207 retinal effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000004393 visual impairment Effects 0.000 description 1
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Abstract
The invention discloses a retinal blood vessel injection device with an adsorption function, wherein a movable connecting seat is connected in a guide channel in a sliding manner along the axial direction of the guide channel, a driving mechanism for driving the movable connecting seat to move is arranged at one end of the guide channel in a penetrating manner, an outer needle tube is communicated with the other end of the guide channel, the outer needle tube is provided with a tube orifice capable of being adsorbed on the surface of a blood vessel, a negative pressure mechanism is communicated with one side of the guide channel, which is away from the driving mechanism, and the movable connecting seat is provided with an inner needle tube synchronously moving along the movable connecting seat.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a retinal blood vessel medicine injection device with an adsorption function.
Background
Retinal vascular occlusion is a common condition of the human eye, with the primary symptoms of central vision loss, or a partial visual field loss. At present, the common treatment means is retinal vascular injection. And with the rapid development and deep application of technologies such as artificial intelligence, intelligent sensing and the like, the medical robot plays an increasingly important role in ophthalmic surgery. And the medicine injection device at the tail end of the robot is directly contacted with retinal blood vessels, and the injection accuracy directly influences the final treatment effect. The traditional medicine injection apparatus is difficult to accurately fix the injection point position, and the stability of the injection process cannot be ensured. Therefore, there is a need to design a retinal blood vessel injection device that improves injection accuracy.
Disclosure of Invention
The invention aims to provide a retinal blood vessel injection device with an adsorption function, which solves the problems in the prior art, accurately positions the surface of a blood vessel through the adsorption function of an outer needle tube so as to ensure the accuracy of the penetrating position of an inner needle tube, ensure the final effective treatment result, and avoid the problems that the traditional injection device is difficult to accurately fix and position the injection and cannot ensure the stability of the injection process.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a retinal blood vessel medicine injection device with an adsorption function, which comprises a needle tube body and a guide channel arranged on the needle tube body, wherein a movable connecting seat is connected in the guide channel in a sliding manner along the axial direction of the guide channel, a driving mechanism for driving the movable connecting seat to move is arranged at one end of the guide channel in a penetrating manner, an outer needle tube is communicated at the other end of the guide channel, the outer needle tube is provided with a tube orifice capable of being adsorbed on the surface of a blood vessel, a negative pressure mechanism is communicated at one side of the movable connecting seat, which is far away from the driving mechanism, the movable connecting seat is provided with an inner needle tube which moves synchronously along with the movable connecting seat, two ends of the inner needle tube respectively extend out of two sides of the movable connecting seat, one end of the inner needle tube is communicated with an injector, the other end of the inner needle tube is coaxially arranged in the outer needle tube in a penetrating manner, and an annular gap for negative pressure induced air is arranged between the inner needle tube and the outer needle tube.
Preferably, a compressible air bag communicated with the outer needle tube and the negative pressure mechanism is arranged in the guide channel, the compressible air bag is of an annular cylindrical structure and is sleeved on the outer peripheral side of the inner needle tube and is located on one side, far away from the driving mechanism, of the movable connecting seat, and an outlet for the outer needle tube to extend out is formed in the needle tube body.
Preferably, the peripheral wall of the compressible air bag is provided with a plurality of annular grooves convenient for the whole axial compression of the compressible air bag, and the annular grooves are distributed at equal intervals along the axial direction of the compressible air bag.
Preferably, the outlet is connected with a limiting part for keeping the axial direction of the outer needle tube constant, and a limiting channel for the outer needle tube to penetrate through and to be matched with the outer needle tube structure is formed in the limiting part.
Preferably, be equipped with between the interior needle tubing with the compressible gasbag with interior needle tubing sliding fit's spacing spring, spacing spring encircle on the periphery wall of interior needle tubing, just spacing spring's both ends respectively the butt in the mobile connection seat with between the export.
Preferably, the inner needle tube comprises a puncture section and a communication section, the puncture section and the communication section are coaxially arranged, the radial section of the communication section is larger than that of the puncture section, the puncture section extends out of the outer needle tube, and the communication section is arranged on the inner side of the limiting spring in a sliding mode.
Preferably, the communicating section is fixed on the movable connecting seat, and a flexible conduit is communicated between one side of the communicating section, which is far away from the puncturing section, and the injector.
Preferably, actuating mechanism includes first motor mount pad and first step motor, first step motor is equipped with the drive shaft, offer the confession on the first motor mount pad the through-hole that the drive shaft stretches out, the needle tubing body is installed through-hole department, just the drive shaft is coaxial to be stretched into in the direction passageway, it is in that the removal connecting seat is the screw thread cup joints the epaxial tubular structure of drive, be equipped with the restriction in the direction passageway the spacing track of removal connecting seat rectilinear movement, the removal connecting seat is movably installed on the spacing track.
Preferably, the communicating section is coaxially arranged on the inner side of the movable connecting seat, and a pipeline for the communicating section and the flexible conduit to pass through is coaxially arranged in the driving shaft.
Preferably, the first motor mounting seat is matched with a mounting seat track, and a stepping mechanism for driving the first motor mounting seat to move is arranged on the mounting seat track.
Compared with the prior art, the invention achieves the following technical effects:
firstly, a movable connecting seat is connected in the guide channel along the axial direction thereof in a sliding way, one end of the guide channel is penetrated with a driving mechanism for driving the movable connecting seat to move, the other end is communicated with an outer needle tube, the outer needle tube is provided with a tube orifice capable of being adsorbed on the surface of a blood vessel, one side of the guide channel, which is positioned at the movable connecting seat and is far away from the driving mechanism, is communicated with a negative pressure mechanism, an inner needle tube which moves synchronously with the movable connecting seat is arranged on the movable connecting seat, two ends of the inner needle tube respectively extend out of two sides of the movable connecting seat, one end of the inner needle tube is communicated with an injector, the other end is coaxially penetrated in the outer needle tube, and an annular gap for negative pressure induced air is arranged between the inner needle tube and the outer needle tube, the negative pressure mechanism is opened, partial air in the outer needle tube is pumped out, the outer needle tube is enabled to generate an adsorption effect, the outer needle tube is attached to the surface of a blood vessel, accurate positioning between the outer needle tube and the blood vessel is formed, the inner needle tube is pushed by the driving mechanism to move and extend out of the tube opening of the outer needle tube to penetrate the surface of the blood vessel, and then the liquid medicine is continuously and stably injected into the blood vessel through the inner needle tube by the injector. Furthermore, an annular gap for negative pressure induced air is arranged between the inner needle tube and the outer needle tube, so that the movement of the inner needle tube in the outer needle tube does not limit the negative pressure induced air effect any more, and the effectiveness of negative pressure adsorption on the surface of a blood vessel and the movement puncture of the inner needle tube is ensured.
Secondly, a compressible air bag communicated with the outer needle tube and the negative pressure mechanism is arranged in the guide channel, the compressible air bag is of an annular tubular structure and is sleeved on the outer peripheral side of the inner needle tube, the compressible air bag is located on one side, away from the driving mechanism, of the movable connecting seat, an outlet for the outer needle tube to extend out is formed in the needle tube body, the compressible air bag is communicated with the outer needle tube, on one hand, air introduced by the negative pressure mechanism flows through the outer needle tube and flows without being contacted with the movable connecting seat or other structures on the needle tube body, complex sealing arrangement of the needle tube body is avoided, the whole negative pressure suction structure is simplified, on the other hand, when the movable connecting seat moves the inner needle tube through the compressible air bag, the compressible air bag can be conveniently extruded, the deformation of the compressible air bag does not limit the work of moving the inner needle tube, namely, the negative pressure guide effect can be achieved, and the movable connecting seat can be guaranteed to extend out of the outer needle tube.
Third, set up a plurality of annular grooves that are convenient for its whole axial compression on the periphery wall of compressible gasbag, and each annular groove is along equal interval distribution of compressible gasbag axial, at first because negative pressure mechanism forms the negative pressure induced air effect to compressible gasbag and outer needle tubing, and then through setting up the annular groove, make the removal connecting seat at the in-process of the compressible gasbag of suppression, the compressible gasbag produces deformation along each annular groove, make the annular groove along the part of the axial up both sides be close to gradually, the stack of each variable is the distance that the outer needle tubing stretched out for interior needle tubing.
Fourth, the exit is connected with the spacing portion that keeps outer needle pipe axial constancy, sets up in spacing portion and supplies outer needle pipe to penetrate and with the spacing passageway of outer needle pipe structure adaptation, forms the guide effect to outer needle pipe through spacing passageway in the spacing portion, both structure adaptations moreover for outer needle pipe is along spacing passageway axial fixity, avoids outer needle pipe to produce the skew in the exit easily in the use, causes the inaccuracy of absorption position.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the connection of the compressible bladder and the outer needle tube of the present invention;
FIG. 3 is a schematic view of the connection between the inner needle tube and the outer needle tube according to the present invention;
FIG. 4 is a schematic cross-sectional view of the first stepping motor connected to the syringe body according to the present invention;
FIG. 5 is an enlarged cross-sectional view of the syringe body of the present invention;
the device comprises a needle tube body 1, a driving mechanism 2, a stepping mechanism 3, a micro-flow pump 4, a second stepping motor 5, a screw rod driver 6, a bottom plate 7, a mounting seat 8, a sample injector 9, a flexible guide pipe 10, a compressible air bag 11, an outer needle tube 12, a movable connecting seat 13, an inner needle tube 14, a limiting part 15, a communicating section 16, a limiting spring 17, a guide channel 18, a driving shaft 19, a mounting seat track 20, a first motor mounting seat 21 and a first stepping motor 22.
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.
The invention aims to provide a retinal blood vessel injection device with an adsorption function, which solves the problems in the prior art, accurately positions the surface of a blood vessel through the adsorption function of an outer needle tube so as to ensure the accuracy of the penetrating position of an inner needle tube, ensure the final effective treatment result, and avoid the problems that the traditional injection device is difficult to accurately fix and position the injection and cannot ensure the stability of the injection process.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
As shown in fig. 1 to 5, the embodiment provides a retinal blood vessel injection device with adsorption function, which includes a needle tube body 1 and a guide channel 18 formed on the needle tube body 1, a movable connection seat 13 is slidably connected in the guide channel 18 along an axial direction thereof, a driving mechanism 2 for driving the movable connection seat 13 to move is inserted into one end of the guide channel 18, the other end is connected with an outer needle tube 12, the outer needle tube 12 has a tube opening capable of being adsorbed on a blood vessel surface, a negative pressure mechanism is connected to one side of the guide channel 18, which is located at a position far away from the driving mechanism, of the movable connection seat 13, an inner needle tube 14 synchronously moving with the movable connection seat 13 is arranged on the movable connection seat 13, two ends of the inner needle tube 14 respectively extend out of two sides of the movable connection seat 13, one end is connected with an injector, the other end is coaxially inserted into the outer needle tube 12, and an annular gap for inducing negative pressure is formed between the inner needle tube 14 and the outer needle tube 12, because the outer needle tube 12 is communicated with the negative pressure mechanism, before injecting medicine, the negative pressure mechanism is started, partial air in the outer needle tube 12 is pumped out, so that the outer needle tube 12 generates an adsorption effect, the outer needle tube 12 is attached to the surface of a blood vessel, accurate positioning between the outer needle tube 12 and the blood vessel is formed, the inner needle tube 14 is pushed by the driving mechanism to move and extend out of the tube opening of the outer needle tube 12 so as to penetrate the surface of the blood vessel, then the medicine liquid is continuously and stably injected into the blood vessel through the inner needle tube 14 by the injector, and the negative pressure mechanism stops working after the inner needle tube 14 penetrates the surface of the blood vessel, so that the situation that the negative pressure continuously output by the negative pressure mechanism interferes with subsequent medicine liquid input is avoided, in the invention, the accurate positioning is carried out on the surface of the blood vessel through the adsorption effect of the outer needle tube 12, so as to ensure the accuracy of the penetrating position of the inner needle tube 14, and guarantee the final effective treatment result, the injection device avoids the problems that the traditional medicine injection device is difficult to accurately fix injection positioning and cannot ensure the stability of the injection process. Furthermore, an annular gap for negative pressure induced air is arranged between the inner needle tube 14 and the outer needle tube 12, so that the movement of the inner needle tube 14 in the outer needle tube 12 does not limit the negative pressure induced air effect any more, and the effectiveness of negative pressure adsorption on the surface of a blood vessel and the movement puncture of the inner needle tube 14 are ensured.
The negative pressure mechanism adopts a micro-flow pump 4, the micro-flow pump 4 is communicated with the guide channel 18 through a guide pipe, so that a space area between the inner needle tube 12 and the outer needle tube 12 generates negative pressure, the tube opening of the outer needle tube 12 plays a role of adsorbing a blood vessel, and the plane where the tube opening of the outer needle tube 12 is located is perpendicular to the axis of the outer needle tube 12, namely, the tube opening of the outer needle tube 12 is of a flush structure which is attached to the surface of the blood vessel, and the tube opening of the outer needle tube 12 is passivated, so that the surface of the blood vessel is prevented from being damaged by the outer needle tube 12 in the adsorption process.
Furthermore, a compressible air bag 11 communicated with the outer needle tube 12 and the negative pressure mechanism is arranged in the guide channel 18, the compressible air bag 11 is in an annular cylindrical structure and is sleeved on the outer peripheral side of the inner needle tube 14 and is positioned on one side of the movable connecting seat 13, which is far away from the driving mechanism, an outlet for the outer needle tube 12 to extend out is formed in the needle tube body 1, the compressible air bag 11 is communicated with the outer needle tube 12 on one hand, so that air introduced by the negative pressure mechanism flows through the outer needle tube 12 and the compressible air bag 11 without contacting with the movable connecting seat 13 or other structures on the needle tube body 1, complicated sealing arrangement of the needle tube body 1 is avoided, the whole negative pressure suction structure is simplified, and on the other hand, when the movable connecting seat 13 moves the inner needle tube 14, the compressible air bag 11 can be conveniently extruded, the deformation of the compressible air bag does not limit the work of the movable inner needle tube 14 any more, that is to say, the negative pressure guiding effect can be achieved, and the movable connecting seat 13 can be ensured that the movable inner needle tube 14 extends out of the outer needle tube 12.
Preferably, the outer circumferential wall of the compressible air bag 11 is provided with a plurality of annular grooves facilitating axial compression of the whole compressible air bag 11, and the annular grooves are distributed at equal intervals along the axial direction of the compressible air bag 11, firstly, a negative pressure mechanism has a negative pressure induced air effect on the compressible air bag 11 and the outer needle tube 12, the specific micro-flow pump 4 penetrates through the needle tube body 1 through a conduit to be communicated with the compressible air bag 11, and then the annular grooves are formed, so that the compressible air bag 11 deforms along the annular grooves in the process of pressing the compressible air bag 11 by the movable connecting seat 13, parts of two sides of the annular grooves on the axial direction gradually approach each other, and the superposition of the variables is the distance that the inner needle tube 14 extends out of the outer needle tube 12.
Moreover, the exit is connected with keeps outer needle tubing 12 invariable spacing portion 15 of axial, sets up on spacing portion 15 and supplies outer needle tubing 12 to penetrate and with the spacing passageway of outer needle tubing 12 structural adaptation, forms the guide effect to outer needle tubing 12 through spacing passageway on spacing portion 15, and both structural adaptations for outer needle tubing 12 is along spacing passageway axial fixity, avoids outer needle tubing 12 to produce the skew in the exit easily in the use, causes the inaccuracy of absorption position.
Further, be equipped with between interior needle tubing 14 and the compressible gasbag 11 with interior needle tubing 14 sliding fit's spacing spring 17, spacing spring 17 encircles on the periphery wall of interior needle tubing 14, and spacing spring 17's both ends butt respectively between removal connecting seat 13 and the export, under spacing spring 17's effect, make interior needle tubing 14 can move along spacing spring 17, guarantee interior needle tubing 14 along spacing spring 17 axis direction constant motion, and then guarantee interior needle tubing 14 at the in-process of injection and backspacing, the stationarity of its motion. Further, since the limiting spring 17 is disposed between the compressible air bag 11 and the inner needle tube 14 to support the compressible air bag 11 in the radial direction, the change of the position of the outer needle tube 12 caused by the deformation of the compressible air bag 11 in the radial direction is avoided.
Wherein, interior needle tubing 14 is greater than the communicating section 16 of the section of punctureing including the puncture section of coaxial setting, radial cross-section, and the puncture section stretches out outer needle tubing 12, and communicating section 16 slides and sets up in spacing spring 17 inboard, makes it more convenient and spacing spring 17 structure looks adaptation through setting up communicating section 16, and then accomplishes spacing spring 17 and to 16 axial spacing effects of communicating section, avoids the section undersize of punctureing, makes it can not be effectual realize limiting displacement by spacing spring 17.
As a preferred embodiment of the present invention, the communicating section 16 is fixed on the movable connection seat 13, and the flexible conduit 10 is communicated between the side of the communicating section away from the puncturing section and the injector, and by providing the flexible conduit 10, the inner needle tube 14 can be conveniently moved in the moving process, so that the flexible conduit 10 is prevented from limiting the displacement of the inner needle tube 14, and the effectiveness of the movement of the inner needle tube 14 is ensured.
Furthermore, actuating mechanism includes first motor mount pad 21 and first step motor 22, first step motor 22 is equipped with drive shaft 19, set up the through-hole that supplies drive shaft 19 to stretch out on the first motor mount pad 21, needle tubing body 1 is installed in through-hole department, the preferred screw hole that corresponds on needle tubing body 1 with first motor mount pad 21 of seting up, and peg graft in screw hole department through the bolt, with connect needle tubing body 1 and first motor mount pad 21, form the mode of can dismantling the connection, and in drive shaft 19 coaxial stretching into guide channel 18, mobile connection seat 13 is the tubular structure of screw thread cup joint on drive shaft 19, be equipped with the spacing track that restriction mobile connection seat 13 rectilinear movement in the guide channel 18, mobile connection seat 13 movable mounting is on spacing track. Specifically, the first stepping motor 22 is a through hollow type, so that the driving shaft 19 is arranged in the first stepping motor 22 in a penetrating manner, and then the end of the driving shaft 19 can extend out of the first stepping motor 22 and the first motor mounting seat 21 to be connected with the movable connecting seat 13.
And set up assorted helicitic texture on the internal perisporium of mobile connection seat 13 and the periphery wall of drive shaft 19 for drive shaft 19 is when receiving the electric drive of first step motor 22 body to produce the rotation, mobile connection seat 13 keeps along ascending quiescent condition in circumference under spacing orbital limiting action, and then advances along spacing orbital under the drive of helicitic texture, or under the back drive of first step motor 22 body, make drive shaft 19 reverse movement, and then make mobile connection seat 13 retreat, accomplish the drive of advancing and retreating of interior needle tubing 14.
Further, the coaxial setting of intercommunication section 16 is in the inboard of mobile connection seat 13, and the coaxial pipeline that supplies intercommunication section 16 and flexible pipe 10 to pass of seting up in drive shaft 19, because drive shaft 19 link up the setting in first step motor 22, through setting up the inside pipeline that sets up of drive shaft 19, make intercommunication section 16 and flexible pipe 10 can stretch out drive shaft 19 through the pipeline, and then be linked together with injector 9, avoid seting up the opening that supplies flexible pipe 10 to stretch out in the direction cylinder way, and can effectively guarantee inner needle tube 14 and the axial displacement of intercommunication section 16.
First motor mount pad 21 is supporting to have mount pad track 20, is equipped with the step mechanism 3 that drives first motor mount pad 21 and remove on mount pad track 20, and step mechanism 3 preferably adopts motor or pneumatic cylinder etc. and specific patient is in quiescent condition when using, and step mechanism 3 drives first motor mount pad 21 and moves along mount pad track 20, and then drives outer needle tubing 12 and is close to gradually and supports corresponding blood vessel surface tightly. Preferably, the first motor mounting seat 21 is provided with an identification mechanism for identifying that the outer needle tube 12 abuts against the surface of the blood vessel, the identification mechanism is electrically connected with the stepping mechanism 3, and after the identification mechanism detects that the outer needle tube is in place, a signal is transmitted to a corresponding controller to control the stepping mechanism 3 to stop operating.
Further, the injector is composed of a screw driver 6 and a sample injector 9, the sample injector 9 is communicated with the inner needle tube 14 through a flexible conduit 10, preferably, the sample injector 9 can adopt various specifications, such as 5ml or 10ml, and further, the sample injector 9 is driven by the screw driver 6 to inject the liquid medicine into the retinal blood vessel, preferably, the screw driver 6 adopts a second step motor 5, the second step motor 5 drives the screw to rotate, and further, the screw moves along the axial direction of the screw, and pushes a piston rod of the sample injector 9, so that the liquid medicine is gradually pushed into the flexible conduit 10 and the inner needle tube 14. And the preferred syringe is provided with a bottom plate 7, all structures of the syringe are installed on the bottom plate 7, the bottom plate 7 is provided with a mounting seat 8 for detachably mounting a sample injector 9, so that the sample injector 9 can be conveniently replaced and adjusted, and the syringe is further provided with a second motor mounting seat 8.
The adaptation according to the actual needs is within the scope of the invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a retina blood vessel injection device with adsorb function, its characterized in that, includes the needle tubing body and sets up the direction passageway on the needle tubing body, there is the removal connecting seat along its axial sliding connection in the direction passageway, the drive is worn to be equipped with to the one end of direction passageway the actuating mechanism that the removal connecting seat removed, and other end intercommunication has outer needle tubing, outer needle tubing has the mouth of pipe that can adsorb at the vascular surface, the direction passageway is located the removal connecting seat is kept away from actuating mechanism's one side intercommunication has negative pressure mechanism, be equipped with the interior needle tubing along with its synchronous motion on the removal connecting seat, the both ends of interior needle tubing stretch out respectively the both sides of removal connecting seat, and its one end intercommunication has the syringe, and the other end is coaxial to be worn to establish in the outer needle tubing, just interior needle tubing with be equipped with the annular gap that supplies the negative pressure induced air between the outer needle tubing.
2. The retinal blood vessel injection device with the adsorption function according to claim 1, wherein a compressible air bag communicated with the outer needle tube and the negative pressure mechanism is arranged in the guide channel, the compressible air bag is in an annular cylindrical structure and is sleeved on the outer peripheral side of the inner needle tube, the compressible air bag is located on one side of the movable connecting seat away from the driving mechanism, and an outlet for the outer needle tube to extend out is formed in the needle tube body.
3. The retinal blood vessel injection device with the adsorption function of claim 2, wherein the outer peripheral wall of the compressible air bag is provided with a plurality of annular grooves for facilitating the whole axial compression thereof, and the annular grooves are distributed at equal intervals along the axial direction of the compressible air bag.
4. The retinal blood vessel injection device with the adsorption function according to claim 3, wherein a limiting part for keeping the axial direction of the outer needle constant is connected to the outlet, and a limiting channel for the outer needle to penetrate through and to be matched with the outer needle structure is formed on the limiting part.
5. The retinal blood vessel injection device with the adsorption function according to any one of claims 2 to 4, wherein a limiting spring in sliding fit with the inner needle tube is arranged between the inner needle tube and the compressible air bag, the limiting spring surrounds the outer peripheral wall of the inner needle tube, and two ends of the limiting spring abut against the movable connecting seat and the outlet respectively.
6. The retinal blood vessel medicine injection device with the adsorption function of claim 5, wherein the inner needle tube comprises a puncture section and a communication section, the puncture section is coaxially arranged, the communication section has a radial section larger than that of the puncture section, the puncture section extends out of the outer needle tube, and the communication section is slidably arranged inside the limiting spring.
7. The retinal blood vessel injection device with the adsorption function of claim 6, wherein the communication section is fixed on the movable connecting seat, and a flexible conduit is communicated between one side of the communication section, which is far away from the puncture section, and the syringe.
8. The retinal blood vessel injection device with the adsorption function of claim 7, wherein the driving mechanism comprises a first motor mounting seat and a first stepping motor, the first stepping motor is provided with a driving shaft, the first motor mounting seat is provided with a through hole for the driving shaft to extend out, the needle tube body is mounted at the through hole, the driving shaft coaxially extends into the guide channel, the movable connecting seat is a cylindrical structure sleeved on the driving shaft in a threaded manner, a limiting track for limiting the linear movement of the movable connecting seat is arranged in the guide channel, and the movable connecting seat is movably mounted on the limiting track.
9. The retinal blood vessel injection device with the adsorption function of claim 8, wherein the communication section is coaxially arranged inside the movable connecting seat, and a pipeline for the communication section and the flexible conduit to pass through is coaxially arranged inside the driving shaft.
10. The retinal blood vessel drug injection device with the adsorption function of claim 9, wherein the first motor mounting seat is matched with a mounting seat rail, and a stepping mechanism for driving the first motor mounting seat to move is arranged on the mounting seat rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211435271.0A CN115779192A (en) | 2022-11-16 | 2022-11-16 | Retina blood vessel injection device with adsorption function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211435271.0A CN115779192A (en) | 2022-11-16 | 2022-11-16 | Retina blood vessel injection device with adsorption function |
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| CN115779192A true CN115779192A (en) | 2023-03-14 |
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| CN213249302U (en) * | 2020-04-02 | 2021-05-25 | 成都市第七人民医院 | Multifunctional interventional treatment needle for medical oncology |
| CN214181412U (en) * | 2020-09-10 | 2021-09-14 | 杭州德柯医疗科技有限公司 | Interventional instrument |
| CN215349726U (en) * | 2021-05-19 | 2021-12-31 | 麦哈敦家居科技(徐州)有限公司 | Long-handle injection gun with positioning function for veterinarian |
| CN215384454U (en) * | 2020-12-30 | 2022-01-04 | 杭州德晋医疗科技有限公司 | Endocardium injection device and endocardium injection system |
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| CN215384454U (en) * | 2020-12-30 | 2022-01-04 | 杭州德晋医疗科技有限公司 | Endocardium injection device and endocardium injection system |
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