CN113317849B - Bone puncture needle emitter - Google Patents
Bone puncture needle emitter Download PDFInfo
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- CN113317849B CN113317849B CN202110435037.7A CN202110435037A CN113317849B CN 113317849 B CN113317849 B CN 113317849B CN 202110435037 A CN202110435037 A CN 202110435037A CN 113317849 B CN113317849 B CN 113317849B
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- shaft
- launching
- outer sleeve
- puncture needle
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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
- A61B17/3472—Trocars; Puncturing needles for bones, e.g. intraosseus injections
Abstract
The invention discloses a bone puncture needle launching device, which comprises an outer sleeve, a launching shaft and an operating shaft, wherein the outer sleeve is fixedly connected with the launching shaft; the inner peripheral surface of the outer sleeve is provided with an annular clamping table; the launching shaft is matched in the outer sleeve, a force storage spring for storing force for launching the launching shaft is arranged in the outer sleeve, the lower end of the launching shaft is provided with a connecting part connected with the head of the puncture needle, and the upper end of the launching shaft is provided with an elastic clamping jaw clamped with the annular clamping table; the operating shaft is arranged above the launching shaft, the lower end of the operating shaft is provided with a pressing part, and when the operating shaft is pressed, the pressing part presses the elastic clamping claw inwards; the lower end of the operating shaft is provided with a sub-rod, the two sides of the lower end of the sub-rod are provided with convex columns, the center of the upper end of the transmitting shaft is provided with a connecting hole, the inner wall of the connecting hole is provided with a guide groove, the sub-rod penetrates into the connecting hole, the convex columns are matched with the guide grooves one by one, and the inner wall of the connecting hole is provided with an annular groove. The invention can avoid the situation of mistaken emission after the puncture needle is loaded, has simple structure, is convenient to operate and is beneficial to reducing the cost.
Description
Technical Field
The invention relates to the technical field of bone puncture medical supplies, in particular to a bone puncture needle launching device.
Background
Utilize the bone pjncture needle, infuse to the marrow intracavity, can exert the drug effect fast, save patient's life, because the hardness of bone is higher, medical personnel are difficult to bare-handed puncture needle into the target location, therefore often need with the help of emitter. The condition that misshooting may appear after current bone pjncture needle emitter pjncture needle is loaded into the thorax has the safety risk, though also there is emitter to set up the safeties specially in order to prevent pjncture needle misshooting, but the structure is complicated, and the operation of being inconvenient for, the cost is higher.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the bone puncture needle launching device, which is used for avoiding the situation of mistaken launching after the puncture needle is loaded, has a simple structure, is convenient to operate and is beneficial to reducing the cost.
The invention provides a bone puncture needle launching device, which comprises:
the inner circumferential surface of the outer sleeve is provided with an annular clamping table;
the launching shaft is adapted in the outer sleeve and can launch from a loading position to a releasing position or return to the loading position from the releasing position, a force storage spring used for storing force for launching the launching shaft is arranged in the outer sleeve, the lower end of the launching shaft is provided with a connecting part connected with the head of the puncture needle, the upper end of the launching shaft is provided with an elastic claw, the upper end of the elastic claw is provided with a claw part, the claw part is provided with a guide inclined plane, when the launching shaft is in the loading position, the elastic claw penetrates through the annular clamping table, and the claw part of the elastic claw is clamped with the upper surface of the annular clamping table;
the operating shaft is coaxially arranged above the launching shaft, the lower end of the operating shaft is provided with a pressing part, and when the launching shaft is positioned at a loading position and presses the operating shaft towards a launching direction, the pressing part of the operating shaft presses the elastic clamping jaw inwards through the guide inclined plane so as to release the locking state of the elastic clamping jaw and the annular clamping table;
the lower extreme of operating axis has downwardly extending's sub-pole, the bilateral symmetry of the lower extreme of sub-pole is provided with the projection, the connecting hole along axial extension is seted up at the center of the upper end of launching axis, the bilateral symmetry of the inner wall of connecting hole is provided with along the guide way of axial extension, and the sub-pole penetrates through the inboard of elasticity jack catch the connecting hole leaves the clearance that supplies elasticity jack catch to warp between sub-pole and the elasticity jack catch, each the projection one-to-one adaptation in each the guide way, the inner wall of connecting hole is equipped with the ring channel that the projection rotation card of confession sub-pole both sides was gone into.
Furthermore, the outer peripheral surface of the launching shaft is provided with a baffle ring, and the power storage spring is sleeved on the launching shaft and supported between the annular clamping table and the baffle ring.
Furthermore, a limiting ring used for limiting the moving stroke of the baffle ring is arranged between the outer sleeve and the transmitting shaft.
Furthermore, at least two convex blocks are distributed at intervals on the periphery of the limiting ring, axial through grooves are formed in the wall of the outer sleeve corresponding to the convex blocks, the convex blocks penetrate through the axial through grooves in a one-to-one correspondence mode, the outer sleeve is positioned outside the axial through grooves and is rotatably sleeved with an adjusting knob, driving threads are arranged on the inner circumferential surface of the adjusting knob, and the outer end of each convex block is matched with the driving threads in the adjusting knob.
Furthermore, two ends of the outer sleeve, which are located in the axial through groove, are respectively provided with a limiting protrusion, and the adjusting knob is limited between the two limiting protrusions.
Further, a support spring supported below the limiting ring is arranged in the outer sleeve.
Furthermore, an annular step is arranged below the limiting ring in the outer sleeve, the supporting spring is supported between the limiting ring and the annular step, and a guide cylinder which extends upwards and is matched with the lower section of the launching shaft is arranged on the inner edge of the annular step.
The puncture needle further comprises an end cap, the upper end of the end cap is detachably connected to the lower end of the outer sleeve, a guide hole matched with the rod part of the puncture needle is formed in the end cap close to the lower end of the end cap, and the end cap can be split into two halves in the longitudinal direction.
Further, the lower extreme of outer sleeve has the go-between, the outer peripheral face of go-between is provided with the joint arch, the inner peripheral surface that the end cap is close to its upper end is provided with the draw-in groove, the joint arch with the draw-in groove joint, the outside cover of the junction of outer sleeve and end cap has fixed cover.
Furthermore, the inner peripheral surface of the fixed sleeve is provided with internal threads, the outer peripheral surface of the end cap close to the upper end of the end cap is positioned on the extension surface of the outer peripheral surface of the outer sleeve close to the lower end of the end cap, and the outer peripheral surface of the end cap close to the upper end of the end cap and the outer peripheral surface of the outer sleeve close to the lower end of the outer sleeve are both provided with external threads matched with the internal threads.
The invention has the beneficial effects that: when the bone puncture needle launching device is used, firstly, the launching shaft is in a release position, at the moment, the head of the puncture needle is fixed on a connecting part at the lower end of the launching shaft, then the operating shaft is pulled upwards, the convex column at the lower end of the sub-rod slides to the top of the guide groove, the operating shaft is continuously pulled upwards, the operating shaft pulls the launching shaft to return to a loading position from the release position through the sub-rod, the claw part of the elastic clamping claw is locked on the annular clamping table, the force is stored by the force storage spring, thus loading of the puncture needle is realized, after loading of the puncture needle, the convex column at the lower end of the sub-rod is aligned to the annular groove screwed into the connecting hole, thus locking between the sub-rod and the launching shaft, and further locking the operating shaft, thus the situation that the puncture needle is mistakenly launched due to the mistaken pressing of the operating shaft can be effectively avoided, when the puncture needle needs to be launched, the convex column at the lower end of the sub-rod is screwed out of the annular groove and returns to the guide groove, then the operating shaft slides downwards, the convex column at the lower end of the sub-rod slides to the lower part of the guide groove, the pressing part at the lower end of the operating shaft is in contact with the guide inclined plane on the claw part of the elastic clamping jaw, then the operating shaft is pressed downwards, the pressing part of the operating shaft extrudes the elastic clamping jaw inwards through the guide inclined plane, so that the elastic clamping jaw and the annular clamping table are locked and released, at the moment, the launching shaft is launched under the action of the force storage spring, and the puncture needle is further punctured into a target position. Therefore, the operation shaft can be locked when the puncture needle is loaded without specially arranging a safety device, the situation of mistaken emission after the puncture needle is loaded is effectively avoided, the structure is simple, the operation is convenient, and the cost is reduced.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention in a released state;
FIG. 2 is a schematic structural view of an embodiment of the present invention in a cocked state;
FIG. 3 is a schematic structural diagram of an embodiment of the present invention in a transmitting state;
FIG. 4 is a sectional view A-A of FIG. 2;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is a cross-sectional view C-C of FIG. 3;
fig. 7 is a cross-sectional view taken along line D-D of fig. 3.
In the drawings, 100-outer sleeve; 110-ring clamp; 120-a spacing ring; 121-bumps; 130-axial through slots; 140-adjusting knob; 150-limiting protrusion; 160-support spring; 170-annular step; 180-a guide cylinder; 190-connecting ring; 191-a clamping protrusion; 200-a transmission axis; 210-power spring; 220-a connecting portion; 230-elastic jaws; 231-a claw portion; 232-a guide ramp; 240-connection hole; 241-a guide groove; 242-an annular groove; 250-a baffle ring; 300-an operating shaft; 310-a pressing part; 320-sub-rod; 321-convex column; 400-an end cap; 410-a guide hole; 420-card slot; 430-a fixation sleeve; 500-puncture needle; 510-a head; 520-rod part.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
1-7, an embodiment of the present invention provides an bone puncture needle firing apparatus including an outer sleeve 100, a firing shaft 200, and an operating shaft 300.
The inner circumferential surface of outer sleeve 100 is provided with an annular shelf 110.
The launching shaft 200 is fitted in the outer sleeve 100, the launching shaft 200 can be launched from a cocking position to a releasing position or can be retracted from the releasing position to the cocking position, a power spring 210 for launching power for the launching shaft 200 is arranged in the outer sleeve 100, specifically, a stop ring 250 is arranged on the outer circumferential surface of the launching shaft 200, the power spring 210 is sleeved on the launching shaft 200 and supported between the annular clamping table 110 and the stop ring 250, and when the launching shaft 200 is in the cocking position, the power spring 210 compresses the power.
The lower end of the emission shaft 200 is provided with a connecting part 220 connected with the head part 510 of the puncture needle 500, the connecting part 220 can adopt a clamping groove structure, the upper end of the emission shaft 200 is provided with an elastic claw 230, the upper end of the elastic claw 230 is provided with a claw part 231, the claw part 231 is provided with a guide inclined plane 232, when the emission shaft 200 is in the loading position, the elastic claw 230 passes through the annular clamping table 110, and the claw part 231 of the elastic claw 230 is clamped with the upper surface of the annular clamping table 110.
The operation shaft 300 is coaxially disposed above the striking shaft 200, the lower end of the operation shaft 300 has a pressing portion 310, and when the striking shaft 200 is in the cocking position and the operation shaft 300 is pressed in the striking direction, the pressing portion 310 of the operation shaft 300 presses the elastic claw 230 inward through the guide slope 232 to release the locking state of the elastic claw 230 and the annular chuck 110.
The lower end of the operating shaft 300 is provided with a sub-rod 320 extending downwards, convex columns 321 are symmetrically arranged on two sides of the lower end of the sub-rod 320, a connecting hole 240 extending along the axial direction is formed in the center of the upper end of the launching shaft 200, guide grooves 241 extending along the axial direction are symmetrically arranged on two sides of the inner wall of the connecting hole 240, the sub-rod 320 penetrates into the connecting hole 240 through the inner side of the elastic claw 230, gaps for deformation of the elastic claw 230 are reserved between the sub-rod 320 and the elastic claw 230, the convex columns 321 are matched with the guide grooves 241 one by one, and an annular groove 242 for the convex columns 321 on two sides of the sub-rod 320 to be rotatably clamped into is formed in the inner wall of the connecting hole 240.
When the bone puncture needle launching device is used, firstly, the launching shaft 200 is in a releasing position (as shown in figure 1), at this time, the head part 510 of the puncture needle 500 is fixed on the connecting part 220 at the lower end of the launching shaft 200, then the operating shaft 300 is pulled upwards, the convex column 321 at the lower end of the sub-rod 320 slides to the top of the guide groove 241, the operating shaft 300 is pulled upwards continuously, the operating shaft 300 pulls the launching shaft 200 through the sub-rod 320 to return to a loading position from the releasing position (as shown in figure 2), the claw part 231 of the elastic claw 230 is locked on the annular clamping table 110, the power of the power storage spring 210 is stored, so as to realize loading of the puncture needle 500, after the puncture needle 500 is loaded, the convex column 321 at the lower end of the sub-rod 320 is aligned to the annular groove 242 screwed into the connecting hole 240, so as to realize locking between the sub-rod 320 and the launching shaft 200, and further lock the operating shaft 300, thus the situation that the puncture needle 500 is mistakenly launched due to mistakenly pressed on the operating shaft 300 can be effectively avoided, as shown in fig. 3, when the puncture needle 500 needs to be launched, the protrusion 321 at the lower end of the sub-rod 320 is rotated out of the annular groove 242 and returned to the guide groove 241, the operation shaft 300 is then slid downward, so that the protrusion 321 at the lower end of the sub-rod 320 slides to the lower part of the guide groove 241, the pressing part 310 at the lower end of the operation shaft 300 contacts with the guide inclined surface 232 on the claw 231 of the elastic claw 230, then the operation shaft 300 is pressed downward, the pressing part 310 of the operation shaft 300 presses the elastic claw 230 inwards through the guide inclined surface 232, so that the locking between the elastic claw 230 and the annular clamping platform 110 is released, and at this time, under the action of the power storage spring 210, the launch shaft 200 is launched, and the puncture needle 500 is further inserted into the target position.
Therefore, the operation shaft 300 can be locked when the puncture needle 500 is loaded without specially arranging a safety device, the situation of mistaken emission after the puncture needle 500 is loaded is effectively avoided, the structure is simple, the operation is convenient, and the cost is reduced.
As a further improvement of the above embodiment, a limit ring 120 for limiting the moving stroke of the stop ring 250 is arranged between the outer sleeve 100 and the launching shaft 200, and when launching, the stop ring 250 outside the launching shaft 200 is blocked by the limit ring 120 to control the launching stroke of the launching shaft 200, so that the puncture depth of the puncture needle 500 can be effectively controlled.
In order to adjust the puncture depth of the puncture needle 500, at least two protrusions 121 are distributed at intervals on the periphery of the limiting ring 120, axial through grooves 130 are formed in the wall of the outer sleeve 100 corresponding to the protrusions 121, the protrusions 121 penetrate the axial through grooves 130 in a one-to-one correspondence manner, an adjusting knob 140 is rotatably sleeved outside the outer sleeve 100 outside the axial through grooves 130, driving threads are arranged on the inner circumferential surface of the adjusting knob 140, and the outer end of each protrusion 121 is matched with the driving threads in the adjusting knob 140. When the puncture depth of the puncture needle 500 is adjusted, the adjusting knob 140 is rotated, the adjusting knob 140 drives the projection 121 to slide along the axial through groove 130 through the driving thread, the position of the limiting ring 120 can be adjusted in the axial direction, and then the purpose of adjusting the puncture depth of the puncture needle 500 is achieved.
In order to prevent the adjusting knob 140 from sliding in the axial direction, two limiting protrusions 150 are respectively disposed at two ends of the axial through slot 130 outside the outer sleeve 100, and the adjusting knob 140 is limited between the two limiting protrusions 150.
In this embodiment, the supporting spring 160 supported below the stop collar 120 is disposed in the outer sleeve 100, and by disposing the supporting spring 160, when the stop collar 250 outside the launching shaft 200 collides with the stop collar 120, the supporting spring 160 supports and damps the stop collar 120, so as to effectively prevent the stop collar 120 from being damaged by collision and improve the service life. Preferably, an annular step 170 is provided in the outer sleeve 100 below the retainer ring 120, the support spring 160 is supported between the retainer ring 120 and the annular step 170, and the inner edge of the annular step 170 is provided with a guide cylinder 180 extending upward and fitted to the lower section of the striking shaft 200. Annular step 170 plays the effect that supports the support spring 160 lower extreme, establishes the guide cylinder 180 that upwards extends simultaneously at the inner edge of annular step 170, not only can install spacingly to support spring 160, and guide cylinder 180 still plays the guide effect to launching shaft 200 moreover to be blocked when effectively avoiding launching shaft 200 to launch.
As a further improvement of the above embodiment, the bone puncture needle launching device further comprises an end cap 400, the upper end of the end cap 400 is detachably connected to the lower end of the outer sleeve 100, the end cap 400 is internally provided with a guide hole 410 matched with the rod part 520 of the puncture needle 500 near the lower end thereof, and the end cap 400 can be split into two halves in the longitudinal direction. The guide hole 410 is arranged to guide the rod part 520 of the puncture needle 500, so that the puncture needle 500 can be effectively prevented from being bent during puncture, and the puncture accuracy can be improved.
Specifically, the lower end of the outer sleeve 100 is provided with a connecting ring 190, the outer circumferential surface of the connecting ring 190 is provided with a clamping protrusion 191, the inner circumferential surface of the end cap 400 close to the upper end is provided with a clamping groove 420, the clamping protrusion 191 is clamped with the clamping groove 420, and the fixing sleeve 430 is sleeved outside the joint of the outer sleeve 100 and the end cap 400. During assembly, the upper ends of the two half end caps 400 are sleeved outside the connecting ring 190, the clamping grooves 420 on the two half end caps 400 are clamped with the clamping protrusions 191 on the connecting ring 190, then the two half end caps 400 can be locked by sleeving the fixing sleeves 430, and when the two half end caps 400 are disassembled, the fixing sleeves 430 are disassembled, so that the two half end caps 400 can be disassembled.
Further, the inner circumferential surface of the fixing sleeve 430 is provided with an internal thread, the outer circumferential surface of the end cap 400 near the upper end thereof is located on an extension surface of the outer circumferential surface of the outer sleeve 100 near the lower end thereof, and the outer circumferential surface of the end cap 400 near the upper end thereof and the outer circumferential surface of the outer sleeve 100 near the lower end thereof are both provided with an external thread adapted to the internal thread. At ordinary times, the fixing sleeve 430 is sleeved on the outer sleeve 100, after the two half end caps 400 are mounted, the fixing sleeve 430 is screwed downwards to be transited to the end caps 400, and when the two half end caps 400 need to be disassembled, the fixing sleeve 430 is screwed back to the outer sleeve 100, so that the operation is convenient, and the fixing sleeve 430 can be prevented from being lost.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being covered by the appended claims and their equivalents.
Claims (8)
1. A bone puncture needle firing device, comprising:
the inner circumferential surface of the outer sleeve is provided with an annular clamping table;
the launching shaft is adapted in the outer sleeve and can launch from a loading position to a releasing position or return to the loading position from the releasing position, a force storage spring used for storing force for launching the launching shaft is arranged in the outer sleeve, the lower end of the launching shaft is provided with a connecting part connected with the head of the puncture needle, the upper end of the launching shaft is provided with an elastic claw, the upper end of the elastic claw is provided with a claw part, the claw part is provided with a guide inclined plane, when the launching shaft is in the loading position, the elastic claw penetrates through the annular clamping table, and the claw part of the elastic claw is clamped with the upper surface of the annular clamping table;
the operating shaft is coaxially arranged above the launching shaft, the lower end of the operating shaft is provided with a pressing part, and when the launching shaft is positioned at a loading position and presses the operating shaft towards a launching direction, the pressing part of the operating shaft presses the elastic clamping jaw inwards through the guide inclined plane so as to release the locking state of the elastic clamping jaw and the annular clamping table;
the lower end of the operating shaft is provided with a sub-rod extending downwards, convex columns are symmetrically arranged on two sides of the lower end of the sub-rod, a connecting hole extending along the axial direction is formed in the center of the upper end of the transmitting shaft, guide grooves extending along the axial direction are symmetrically formed in two sides of the inner wall of the connecting hole, the sub-rod penetrates into the connecting hole through the inner side of the elastic clamping jaw, a gap for deformation of the elastic clamping jaw is reserved between the sub-rod and the elastic clamping jaw, the convex columns are matched with the guide grooves one by one, and an annular groove for the convex columns on two sides of the sub-rod to be clamped in a rotating mode is formed in the inner wall of the connecting hole;
a retaining ring is arranged on the peripheral surface of the launching shaft, and the power storage spring is sleeved on the launching shaft and supported between the annular clamping table and the retaining ring;
and a limiting ring used for limiting the moving stroke of the baffle ring is arranged between the outer sleeve and the transmitting shaft.
2. The bone puncture needle launching device according to claim 1, wherein at least two projections are distributed at intervals on the periphery of the limiting ring, an axial through groove is formed in the wall of the outer sleeve corresponding to each projection, each projection penetrates through each axial through groove in a one-to-one correspondence manner, an adjusting knob is rotatably sleeved outside the axial through groove of the outer sleeve, a driving thread is arranged on the inner circumferential surface of the adjusting knob, and the outer end of each projection is matched with the driving thread in the adjusting knob.
3. The bone puncture needle launching device according to claim 2, wherein a limiting protrusion is respectively arranged at two ends of the axial through groove outside the outer sleeve, and the adjusting knob is limited between the two limiting protrusions.
4. The bone puncture needle firing device of claim 2, wherein a support spring is disposed within the outer sleeve and supported below the stop collar.
5. The bone puncture needle firing device according to claim 4, wherein an annular step is provided in the outer sleeve below the retainer ring, the support spring is supported between the retainer ring and the annular step, and a guide cylinder extending upward and fitted to a lower section of the firing shaft is provided on an inner edge of the annular step.
6. The bone puncture needle firing device according to claim 1, further comprising an end cap, wherein an upper end of the end cap is detachably connected to a lower end of the outer sleeve, a guide hole adapted to the shaft portion of the puncture needle is provided inside the end cap near the lower end thereof, and the end cap is split in two in a longitudinal direction.
7. The bone puncture needle launching device according to claim 6, wherein the lower end of the outer sleeve is provided with a connecting ring, the outer peripheral surface of the connecting ring is provided with a clamping protrusion, the inner peripheral surface of the end cap close to the upper end of the end cap is provided with a clamping groove, the clamping protrusion is clamped with the clamping groove, and a fixing sleeve is sleeved outside the joint of the outer sleeve and the end cap.
8. A bone puncture needle firing device according to claim 7, characterized in that the inner peripheral surface of the fixing sleeve is provided with an internal thread, the outer peripheral surface of the end cap near the upper end thereof is located on an extension of the outer peripheral surface of the outer sleeve near the lower end thereof, and the outer peripheral surfaces of the end cap near the upper end thereof and the outer sleeve near the lower end thereof are provided with an external thread adapted to the internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110435037.7A CN113317849B (en) | 2021-04-22 | 2021-04-22 | Bone puncture needle emitter |
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|---|---|---|---|
| CN202110435037.7A CN113317849B (en) | 2021-04-22 | 2021-04-22 | Bone puncture needle emitter |
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| CN113317849A CN113317849A (en) | 2021-08-31 |
| CN113317849B true CN113317849B (en) | 2022-09-27 |
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| CN113317849A (en) | 2021-08-31 |
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