CN101292892A

CN101292892A - Anaesthetic puncture needle

Info

Publication number: CN101292892A
Application number: CNA2008100167659A
Authority: CN
Inventors: 范海鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-10
Filing date: 2008-06-10
Publication date: 2008-10-29
Anticipated expiration: 2028-06-10
Also published as: CN100563586C

Abstract

The present invention discloses an anesthesia puncture needle which comprises a support saddle and a support board. The upper part of the support saddle is equipped with an outer sleeve, the inner cavity of the outer sleeve is equipped with an inner sleeve, the inside of the inner sleeve is equipped with a needle fixing rod which is connected with the inner sleeve by screw thread. The inside of the needle fixing rod is provided with a puncture needle installing hole. A puncture needle is arranged inside the puncture needle installing hole. The outer circle of the needle fixing rod is equipped with a spring two ends of which are respectively contacted with the inner sleeve and the outer sleeve. The lateral wall of the needle fixing rod is provided with a guide slot. The bottom of the support saddle is provided with a guide block which is placed inside the guide slot. The outer wall of the inner sleeve is provided with a vertical chute and an arch horizontal slot which are communicated with each other. The inner wall of the outer sleeve is provided with a locating block which is placed inside the arch horizontal slot. The inside of the outer sleeve is equipped with the inner sleeve and the spring, and the inner sleeve is rotated relatively to the outer sleeve, which ensures that the inner sleeve is separated from the restriction of the outer sleeve, at the time, the spring can eject the puncture needle which connects the inner sleeve with the outer sleeve and ensures that the puncture needle exits from the patient body fast, so as to achieve the aim of removing the needle fast and reduce the possibility of injuring the patient during the process of puncture.

Description

Anaesthetic puncture needle

Technical field

The present invention relates to a kind of medical apparatus and instruments, exactly is a kind of anaesthetic puncture needle.

Background technology

Anesthesia is to carry out preoperative necessary program, when carrying out anesthetic puncture with existing anaesthetic puncture needle, has following defective: 1, the anesthetic puncture angle is difficult to grasp, and is difficult for vertically puncturing, and puncture is bigger, easily makes the patient comparatively painful; 2, existing puncture needle as emergency, is difficult to realize the quick withdraw of the needle at piercing process, thereby, easily patient body is caused damage.

Summary of the invention

Purpose of the present invention has provided a kind of anaesthetic puncture needle, and it can address the above problem, inner sleeve and spring are installed in its trocar sheath, under the state of emergency, can rotate inner sleeve relative to trocar sheath, make inner sleeve break away from the trocar sheath constraint, at this moment, spring can launch out inner sleeve and the puncture needle that is connected with inner sleeve rapidly, thereby, can make puncture needle by withdrawing from fast in patient's body, reach quick withdraw of the needle purpose, reduce the possibility that in the piercing process patient is constituted injury; It is equipped with adjusting device, can accurately regulate the puncture angle of puncture needle, can carry out accurate vertical puncture.The present invention also has simple in structure, is convenient to processing and fabricating, advantage safe and convenient to use.

The objective of the invention is to be achieved through the following technical solutions: anaesthetic puncture needle, comprise bearing and support plate, trocar sheath is installed on bearing top, the lower, outer perimeter of trocar sheath is provided with circular convex edge, offer swivelling chute in the bearing, swivelling chute cooperates with circular convex edge, the interior intracavity of trocar sheath is installed inner sleeve, the pin fixed bar is installed in the inner sleeve, the pin fixed bar is threaded with inner sleeve, offer the puncture needle installing hole in the pin fixed bar, puncture needle is installed in the puncture needle installing hole, the lower end of puncture needle passes outside the pin fixed bar, the periphery mounting spring of pin fixed bar, spring is positioned at intracavity, the upper end of spring contacts with inner sleeve, the lower end of spring contacts with trocar sheath, offer gathering sill on the sidewall of pin fixed bar, the bottom of bearing is provided with guide pad, guide pad is positioned at gathering sill, offer perpendicular chute and arc level trough on the outer wall of inner sleeve, arc level trough and perpendicular chute communicate, locating piece is set on the outer sleeve inner wall, locating piece is positioned at the arc level trough, the bearing bottom is provided with first cover and second cover, offer first inner chamber in first cover, the first interior intracavity is provided with female thread, offers second inner chamber in second cover, intracavity is offered female thread in second, offer second rotation slot and first rotation slot on the support plate, movable second bolt and first bolt installed on the support plate, the lower end of second bolt is provided with second projection, second projection cooperates with second rotation slot, the first bolt lower end is provided with first projection, and first projection cooperates with first rotation slot, and second bolt upper end is connected with second external threading, first bolt upper end is connected with first external threading, and puncturing hole is offered at the support plate middle part.

For further realizing purpose of the present invention realizing by the following technical solutions: upper surface of support is installed level indicator.The length H of perpendicular chute is 7.5mm.Cannelure is offered on pin fixed bar top, and change is installed in the cannelure, and the change inwall is offered toroidal cavity, offers medicine-pouring port in the change, and medicine-pouring port communicates with toroidal cavity, and level is offered through hole on the change inwall, and through hole communicates with puncture needle installing hole and cannelure respectively.Offer second installing hole and first installing hole on the trocar sheath, second connecting rod is installed in second installing hole, head rod is installed in first installing hole, the lower end of second connecting rod is threaded with second installing hole, the upper end of second connecting rod is provided with second positive stop lug boss, the lower end of head rod is threaded with first installing hole, the upper end of head rod is provided with first positive stop lug boss, the upper end of second connecting rod and head rod all flexibly connects with rotating disk, offer second circular trough and first circular trough on the rotating disk, second circular trough cooperates with second positive stop lug boss, first circular trough and first positive stop lug boss cooperate, and rotating disk is connected with the output shaft of motor, and the periphery of motor is installed handle, motor switch is installed at the top of handle, and motor switch is connected with electric electromechanics by lead.The support plate two ends are hinged with the upper end of second expansion link and first expansion link respectively, the lower end of second expansion link and second is decided arc and is connected, second decides a side of arc and the side hinge of the second moving arc, the lower end of first expansion link and first is decided arc and is connected, and first decides a side of arc and the side hinge of the first moving arc.The upper surface of bearing is provided with circular scale, and circular scale is positioned at the trocar sheath periphery, on the outer wall of trocar sheath pointer is set.

Description of drawings

Fig. 1 is a structural representation of the present invention; Fig. 2 is the local structure for amplifying sketch map of the I of Fig. 1; Fig. 3 is the A-A section structure for amplifying sketch map of Fig. 1; Fig. 4 is that the B of Fig. 1 is to structural representation.

Number in the figure: 1 motor switch, 2 handles, 3 motor, 4 rotating disks, 5 first circular troughs, 6 second circular troughs, 7 second positive stop lug boss, 8 first positive stop lug boss, 9 head rods, 10 second connecting rods, 11 changes, 12 toroidal cavities, 13 medicine-pouring ports, 14 through holes, 15 second installing holes, 16 first installing holes, 17 puncture needle installing holes, 18 locating pieces, 19 perpendicular chute 20 gathering sills 21 guide pads 22 inner sleeves 23 circular convex edge 24 springs, 25 level meters, 26 second covers, 27 first sets, 28 second inner chambers, 29 first inner chambers, 30 second bolts, 31 first bolts, 32 swivelling chutes, 33 puncturing holes, 34 puncture needles, 35 second rotation slots, 36 first rotation slots, 37 second projections, 38 first projections, 39 second expansion links, 40 first expansion links 41 second are decided arc 42 second moving arc 43 first moving arcs 44 first and are decided arc 45 pin fixed bars 46 arc level troughs 47 outer tubes 48 bearings 49 inner chambers 50 support plates 51 scales 52 pointers.

The specific embodiment

As shown in Figure 1, anaesthetic puncture needle of the present invention, comprise bearing 48 and support plate 50, trocar sheath 47 is installed on bearing 48 tops, trocar sheath 47 can rotate relative to bearing 48 along self axis, the lower, outer perimeter of trocar sheath 47 is provided with circular convex edge 23, offer swivelling chute 32 in the bearing 48, swivelling chute 32 cooperates with circular convex edge 23, can prevent that trocar sheath 47 from by deviating from the bearing 48, offering inner chamber 49 in the trocar sheath 47, inner sleeve 22 is installed in the inner chamber 49, pin fixed bar 45 is installed in the inner sleeve 22, and pin fixed bar 45 is threaded with inner sleeve 22, offers puncture needle installing hole 17 in the pin fixed bar 45, puncture needle 34 is installed in the puncture needle installing hole 17, the lower end of puncture needle 34 passes outside the pin fixed bar 45, the periphery mounting spring 24 of pin fixed bar 45, and spring 24 is positioned at inner chamber 49, the upper end of spring 24 contacts with inner sleeve 22, the lower end of spring 24 contacts with trocar sheath 47, and under normal condition, spring 24 is in the compressed energy-storage state by inner sleeve 22 extruding; Offer gathering sill 20 on the sidewall of pin fixed bar 45, the bottom of bearing 48 is provided with guide pad 21, guide pad 21 is positioned at gathering sill 20, trocar sheath 47 can rotate synchronously with inner sleeve 22 under the normal condition, trocar sheath 47 and inner sleeve 22 connect and compose turning set, and turning set, pin fixed bar 45, gathering sill 20 and guide pad 21 constitute screw-nut body, and the synchronous rotation of trocar sheath 47 and inner sleeve 22 can be converted into the rectilinear motion up and down of pin fixed bar 45, thereby, realize the inserting needle or the withdraw of the needle; Offer perpendicular chute 19 and arc level trough 46 on the outer wall of inner sleeve 22, the upper end of arc level trough 46 and perpendicular chute 19 communicates, on trocar sheath 47 inwalls locating piece 18 is set, locating piece 18 is positioned at arc level trough 46, under the normal condition, locating piece 18 can stop 47 of inner sleeve 22 and trocar sheaths that axial rectilinear motion takes place, when the quick withdraw of the needle of need in arc level trough 46, rotatable inner sleeve 22, make the intersection of locating piece 18 dislocation arc level troughs 46 and perpendicular chute 19, at this moment, locating piece 18 loses barrier effect, inner sleeve 22 can be under the effect of spring 24, relatively trocar sheath 47 ejaculation that upsprings, thereby, realize the purpose of the quick withdraw of the needle, withdraw of the needle process, the process that also to be locating piece 18 move in perpendicular chute 19 relatively, when locating piece 18 moved to perpendicular chute 19 lower ends, withdraw of the needle process stopped; The withdraw of the needle fast, be when in piercing process, meeting emergency, and a kind of emergent means of taking, withdraw of the needle time weak point is the key of the quick withdraw of the needle, and the withdraw of the needle is simple to operate, be the short assurance of withdraw of the needle time, yet, existing all kinds of anesthetic needles, the operating process of the withdraw of the needle is very complicated, and, owing to all be to rely on manpower fully during the existing anesthetic needle withdraw of the needle, and the strength of staff and speed are limited, therefore, existing anesthetic needle can't be realized the purpose of the quick withdraw of the needle at all, thereby, easily the patient is caused damage because of the withdraw of the needle is untimely; And anaesthetic puncture needle of the present invention, when the quick withdraw of the needle of need, only need inner sleeve 22 relative trocar sheaths 47 are turned an angle, make locating piece 18 be positioned at the intersection of arc level trough 46 and perpendicular chute 19, at this moment, inner sleeve 22 loses the constraint of locating piece 18, inner sleeve 22 can be under the effect of spring 24, trocar sheath 47 ejects at a high speed relatively, thereby, inner sleeve 22 drive pin fixed bars 45 and puncture needle 34 are ejected fast, learn through repetition test repeatedly, 24 pairs of inner sleeves 22 of spring reach imitates the good effect of launching, and strength and speed that inner sleeve 22 is ejected all obviously are better than staff, can realize the quick withdraw of the needle effect of real meaning.

Adjust the angle of puncture for convenience, realize vertical puncture, to guarantee the effect that punctures, first cover, 27 and second cover 26 can be set in bearing 48 bottoms, offer first inner chamber 29 in first cover 27, in first inner chamber 29 female thread is set, offer second inner chamber 28 in second cover 26, offer female thread in second inner chamber 28, offer second rotation slot 35 and first rotation slot 36 on the support plate 50, movable second bolt 30 and first bolt 31 installed on the support plate 50, second bolt 30 can rotate relative to support plate 50 with first bolt 31, the lower end of second bolt 30 is provided with second projection 37, second projection 37 cooperates with second rotation slot 35, first bolt, 31 lower ends are provided with first projection 38, first projection 38 cooperates with first rotation slot 36, second projection 37 and first projection 38 can prevent that second bolt 30 and first bolt 31 are by deviating from second rotation slot 35 and first rotation slot 36, second bolt, 30 upper ends are threaded with second cover 26, first bolt, 31 upper ends are threaded with first cover 27, puncturing hole 33 is offered at support plate 50 middle parts, puncturing hole 33 is when allowing puncture needle 34 inserting needles or the withdraw of the needle, passes support plate 50.Before the puncture, can make the axis direction of puncture needle 34 perpendicular to support plate 50 upper surfaces by adjusting second bolt 30 and first bolt 31 respectively, promptly perpendicular to patient's the puncture portion that treats, thereby, the wound minimum that can guarantee punctures causes, can farthest reduce the damage of patient body, reduce patient's misery.

For making puncture more accurate, can level indicator 25 be installed at the upper surface of bearing 48, the doctor can adjust the angle position of bearing 48 by eye-level instrument 25, guarantees vertical puncture.

Learn that according to a large amount of clinical experiences fast during the withdraw of the needle, withdraw of the needle distance should not be long, therefore, need the length of perpendicular chute 19 is done corresponding qualification, result of the test is: when the length H of perpendicular chute 19 is 7.5mm, best results, promptly puncture needle 34 should not surpass 7.5mm by the length that withdraws from fast in patient's body.

For after puncture, can be by puncture needle 34 directly to patient infusion anesthetis, simultaneously, also for convenience narcotic pencil can be connected with pin fixed bar 45 from any direction, can be as shown in Figure 1, cannelure is offered on pin fixed bar 45 tops, change 11 is installed in the cannelure, offer toroidal cavity 12 on the inwall of change 11, offer medicine-pouring port 13 in the change 11, medicine-pouring port 13 communicates with toroidal cavity 12, and level is offered through hole 14 on change 11 inwalls, and through hole 14 communicates with puncture needle installing hole 17 and cannelure respectively.After finishing puncture, need not puncture needle 34 is extracted, can be directly pencil be connected with medicine-pouring port 13 in the change 11 and communicates, medicinal liquid can be executed real anesthesia to the patient in medicine-pouring port 13, toroidal cavity 12, through hole 14, puncture needle installing hole 17 and puncture needle 34 injection patient bodies.

In piercing process, if resistance is bigger, can puncture by external force, concrete scheme is, can offer second installing hole 15 and first installing hole 16 at trocar sheath 47 top ends, in second installing hole 15 second connecting rod 10 is installed, in first installing hole 16 head rod 9 is installed, the lower end of second connecting rod 10 is threaded with second installing hole 15, the upper end of second connecting rod 10 is provided with second positive stop lug boss 7, the lower end of head rod 9 is threaded with first installing hole 16, the upper end of head rod 9 is provided with first positive stop lug boss 8, offers second circular trough 6 on the rotating disk 4 and first circular trough, 5, the second circular troughs 6 cooperate with second positive stop lug boss 7, first circular trough 5 and first positive stop lug boss 8 cooperate, promptly the upper end of second connecting rod 10 and head rod 9 all flexibly connects with rotating disk 4, and rotating disk 4 is connected with the output shaft of motor 3, and the periphery of motor 3 is installed handle 2, motor switch 1 is installed at the top of handle 2, and motor switch 1 is by lead and motor 3 loop that is electrically connected to form.When in puncture, being hampered power, can rotate second connecting rod 10 and head rod 9 respectively, rotating disk 4 is connected with head rod 9 by second connecting rod 10 with trocar sheath 47, then, the handle 2 of holding with a firm grip, and press motor switch 1 with thumb, motor switch 1 is a point driving switch, when thumb was pinned motor switch 1 and do not put, motor 3 was by rotating disk 4, second connecting rod 10 drives trocar sheath 47 with head rod 9 and rotates relative to bearing 48, when thumb unclamp motor switch 1, motor switch 1 is upspring and is resetted, motor 3 stalls, thereby, can make things convenient for the doctor to control the degree of depth of puncture.

If will make piercing process accurately stable more, support plate 50 can be fixed on the sick bed, for making things convenient for fixed supported slab 50, concrete scheme is as follows: support plate 50 two ends are hinged with the upper end of second expansion link 39 and first expansion link 40 respectively, the lower end of second expansion link 39 and second is decided arc 41 and is connected, second decides a side of arc 41 and the side hinge of the second moving arc 42, the lower end of first expansion link 40 and first is decided arc 44 and is connected, and first decides a side of arc 44 and the side hinge of the first moving arc 43.Before the puncture, only need utilize second decide arc 41, second moving arc 42, the first moving arc 43 and first and to decide arc 44 and support plate 50 is fixed in gets final product fixed supported slab 50 on the sick bed respectively.

After puncture reached certain depth, the inserting needle size that continues puncture needed accurately to hold, and the difficulty that this has just improved puncture needs the doctor to have rich experiences, otherwise, may accurately reach puncture position, influence anaesthetic effect.For addressing the above problem, as shown in Figure 1 and Figure 4, annular scale 51 can be set at the upper surface of bearing 48, annular scale 51 is positioned at trocar sheath 47 peripheries, and pointer 52 is set on the outer wall of trocar sheath 47.When need carried out accurate inserting needle, the doctor can see the angle that pointer 52 streaks clearly in rotating jacket pipe 47, can learn the accurate size of puncture needle 34 inserting needles, thereby the operation easier of the puncture that reduces can improve puncture accuracy.

The present invention not technology contents of detailed description is known technology.

Claims

1, anaesthetic puncture needle, it is characterized in that: comprise bearing (48) and support plate (50), trocar sheath (47) is installed on bearing (48) top, the lower, outer perimeter of trocar sheath (47) is provided with circular convex edge (23), offer swivelling chute (32) in the bearing (48), swivelling chute (32) cooperates with circular convex edge (23), inner sleeve (22) is installed in the inner chamber (49) of trocar sheath (47), pin fixed bar (45) is installed in the inner sleeve (22), pin fixed bar (45) is threaded with inner sleeve (22), offer puncture needle installing hole (17) in the pin fixed bar (45), puncture needle (34) is installed in the puncture needle installing hole (17), the lower end of puncture needle (34) passes outside the pin fixed bar (45), the periphery mounting spring (24) of pin fixed bar (45), spring (24) is positioned at inner chamber (49), the upper end of spring (24) contacts with inner sleeve (22), the lower end of spring (24) contacts with trocar sheath (47), offer gathering sill (20) on the sidewall of pin fixed bar (45), the bottom of bearing (48) is provided with guide pad (21), guide pad (21) is positioned at gathering sill (20), offer perpendicular chute (19) and arc level trough (46) on the outer wall of inner sleeve (22), arc level trough (46) and perpendicular chute (19) communicate, on trocar sheath (47) inwall locating piece (18) is set, locating piece (18) is positioned at arc level trough (46), bearing (48) bottom is provided with first cover (27) and second cover (26), offer first inner chamber (29) in first cover (27), first inner chamber is provided with female thread in (29), offer second inner chamber (28) in second cover (26), second inner chamber is offered female thread in (28), offer second rotation slot (35) and first rotation slot (36) on the support plate (50), support plate (50) is gone up movable second bolt (30) and first bolt (31) installed, the lower end of second bolt (30) is provided with second projection (37), second projection (37) cooperates with second rotation slot (35), first bolt (31) lower end is provided with first projection (38), first projection (38) cooperates with first rotation slot (36), second bolt (30) upper end is threaded with second cover (26), first bolt (31) upper end is threaded with first cover (27), and puncturing hole (33) is offered at support plate (50) middle part.

2, anaesthetic puncture needle according to claim 1 is characterized in that: bearing (48) upper surface is installed level indicator (25).

3, anaesthetic puncture needle according to claim 1 and 2 is characterized in that: the length H of perpendicular chute (19) is 7.5mm.

4, anaesthetic puncture needle according to claim 3, it is characterized in that: cannelure is offered on pin fixed bar (45) top, change (11) is installed in the cannelure, change (11) inwall is offered toroidal cavity (12), offer medicine-pouring port (13) in the change (11), medicine-pouring port (13) communicates with toroidal cavity (12), level exploitation through hole (14) on change (11) inwall, and through hole (14) communicates with puncture needle installing hole (17) and cannelure respectively.

5, anaesthetic puncture needle according to claim 1, it is characterized in that: offer second installing hole (15) and first installing hole (16) on the trocar sheath (47), second connecting rod (10) is installed in second installing hole (15), head rod (9) is installed in first installing hole (16), the lower end of second connecting rod (10) is threaded with second installing hole (15), the upper end of second connecting rod (10) is provided with second positive stop lug boss (7), the lower end of head rod (9) is threaded with first installing hole (16), the upper end of head rod (9) is provided with first positive stop lug boss (8), the upper end of second connecting rod (10) and head rod (9) all flexibly connects with rotating disk (4), offer second circular trough (6) and first circular trough (5) on the rotating disk (4), second circular trough (6) cooperates with second positive stop lug boss (7), first circular trough (5) and first positive stop lug boss (8) cooperate, rotating disk (4) is connected with the output shaft of motor (3), the periphery of motor (3) is installed handle (2), motor switch (1) is installed at the top of handle (2), and motor switch (1) is electrically connected with motor (3) by lead.

6, anaesthetic puncture needle according to claim 1, it is characterized in that: support plate (50) two ends are hinged with the upper end of second expansion link (39) and first expansion link (40) respectively, the lower end of second expansion link (39) and second is decided arc (41) and is connected, second decides a side of arc (41) and the side hinge of the second moving arc (42), the lower end of first expansion link (40) and first is decided arc (44) and is connected, and first decides a side of arc (44) and the side hinge of the first moving arc (43).

7, anaesthetic puncture needle according to claim 1 is characterized in that: the upper surface of bearing (48) is provided with circular scale (51), and circular scale (51) is positioned at trocar sheath (47) periphery, and pointer (52) is set on the outer wall of trocar sheath (47).