CN117122394A - Clinical puncture outfit - Google Patents

Abstract

The invention relates to the technical field of medical equipment, in particular to a clinical puncture outfit, which comprises a main body and two groups of support frames, wherein a puncture tube is fixedly connected to the bottom surface of the main body, a puncture needle is inserted into the puncture tube, the upper end of the puncture needle is fixedly connected with a connecting cap, the two groups of support frames are internally and rotatably connected with guide rods, the outer side walls of the two groups of guide rods are respectively provided with a thread groove, sleeve plates are respectively sleeved at positions, close to the upper ends, of the outer sides of the tops of the sleeve plates, and round holes are formed in the outer walls of the tops of the sleeve plates in a penetrating mode. The puncture needle can well support the positions of the puncture tube and the puncture needle through the auxiliary mechanism, and the medical staff is assisted to flexibly fine tune the inclination of the puncture tube and the inclination of the puncture needle, so that the puncture tube and the puncture needle can be better and vertically placed on a puncture part of a patient, the inclined puncture is avoided, the puncture effect is influenced, the medical staff can be assisted to puncture, and the physical strength of the medical staff during puncture is saved.

Description

Clinical puncture outfit

Technical Field

The invention relates to the technical field of medical equipment, in particular to a clinical puncture outfit.

Background

The puncture outfit is used for the puncture operation in medical treatment, comprises the steps of obtaining biological tissue or body fluid samples from the body surface or the inside of an organ so as to diagnose and treat diseases, and has the main functions of penetrating the skin and the soft tissue through a needle head to sample the tissues or inject medicines, so that the pain and the wound of a patient can be reduced, the accuracy and the efficiency of diagnosis and treatment are improved, and the puncture outfit is often required to be used in the cardiology department operation.

When using the puncture ware to puncture, need keep penetrating the patient puncture position perpendicularly with the pjncture needle, guarantee normal puncture, generally need medical personnel manual alignment and support the pjncture ware, puncture the pjncture needle into patient and wait the puncture position, but generally do not have the structure of auxiliary stay pjncture needle, can not be more convenient when carrying out vertical adjustment, and when the puncture, need medical personnel manual power, it is comparatively laborious to penetrate the pjncture needle into patient and wait the puncture position, and adopt electric pjncture ware stability not enough again.

Disclosure of Invention

The invention aims to solve the problems in the background technology and provides a clinical puncture outfit.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a clinical puncture ware, includes main part and two sets of braced frame, main part bottom surface fixedly connected with puncture pipe, puncture pipe inside is inserted and is equipped with the puncture needle, puncture needle upper end fixedly connected with connecting cap, two sets of braced frame is inside all to rotate and is connected with the guide arm, two sets of the screw groove has all been seted up to the guide arm lateral wall, two sets of the guide arm outside is close to the equal cover of upper end position and is equipped with the sleeve board, the round hole has been seted up in the penetration of sleeve board top outer wall, round hole inside wall fixedly connected with quarter butt, just quarter butt one end agrees with mutually with the screw groove, main part outside fixedly connected with solid fixed ring, gu the annular one has been seted up to solid fixed ring lateral wall, just sleeve board one end sets up inside annular one, two sets of braced frame lateral wall is close to the lower part position and all is provided with complementary unit, the connecting cap top is provided with stop gear, complementary unit includes the retaining plate, the retaining plate sets up in braced frame one side position, retaining plate top outer wall is close to both sides position and is fixedly connected with two sets of joint boards.

In the clinical puncture outfit, a hollow adjusting plate is inserted between two groups of connecting plates, the outer side walls of the two groups of connecting plates are movably connected with connecting shafts, one ends of the connecting shafts are fixedly connected to the positions of the two outer side walls of the hollow adjusting plates respectively, an inserting plate is inserted at one end of the hollow adjusting plate, a screw is inserted at one end, far away from the hollow adjusting plate, of the outer side wall of the inserting plate, and a nut is sleeved outside the screw and is close to the position of the outer side wall of the inserting plate.

In the clinical puncture outfit, the movable grooves are formed in the two outer side walls of the inserting plate, the clamping blocks are inserted into the movable grooves, supporting springs are fixedly connected between one ends of the clamping blocks and the inner side walls of the movable grooves, a plurality of groups of clamping grooves are formed in the two outer side walls of the hollow adjusting plate in a penetrating mode, and the clamping grooves are matched with the clamping blocks.

In the clinical puncture outfit, the outer side wall of the connecting plate is fixedly connected with the U-shaped support, two groups of limiting rods are inserted near the outer side wall of the U-shaped support, a first gear is fixedly connected to the outer side wall of the connecting shaft near the outer side wall of the connecting plate, a slot is formed in the outer side wall of the connecting plate near one end of the limiting rod, the slot is matched with the limiting rod, and a circular plate is fixedly connected to one end, far away from the connecting plate, of the limiting rod.

In the clinical puncture outfit, a reset spring is sleeved outside the limiting rod and between the circular plate and the outer side wall of the U-shaped bracket, one end of the reset spring is fixedly connected to the outer side wall of the U-shaped bracket, and the other end of the reset spring is fixedly connected to the outer side wall of the circular plate.

In the above-mentioned clinical puncture outfit, stop gear includes two sets of U-shaped fagging, two sets of U-shaped fagging is fixed connection respectively and is close to upper end position at braced frame lateral wall, two sets of U-shaped fagging keep away from between braced frame one end fixedly connected with annular shell, annular shell bottom surface swing joint has two sets of movable rods, and two sets of movable rods keep away from annular shell one end respectively with two sets of guide arm upper end fixed connection, the movable rod upper end just is located annular shell inside fixedly connected with gear two.

In the clinical puncture outfit, the movable ring is arranged inside the annular shell, a plurality of groups of tooth grooves are formed in the outer side wall of the movable ring, the tooth grooves are meshed with the gears, the annular connecting plate is fixedly connected to the outer wall of the top, and the annular groove II is formed in the inner side wall of the annular connecting plate.

In the clinical puncture outfit, the L-shaped sliding plate is inserted in the second annular groove, one end of the L-shaped sliding plate, which is far away from the annular connecting plate, is fixedly connected with the outer wall position of the top of the movable ring, the bottom surface of the movable ring is fixedly connected with two groups of telescopic connecting rods, and one end of the telescopic connecting rod, which is far away from the movable ring, is fixedly connected with the outer wall position of the top of the fixed ring.

In the clinical puncture outfit, the annular limiting grooves are formed in the upper inner side wall and the lower inner side wall of the annular groove, the arc limiting plates are inserted into the annular limiting grooves, the arc limiting plates are fixedly connected to one end of the sleeve plate, a plurality of first groups of threads are formed in the outer side wall of the puncture needle close to the lower end, a plurality of second groups of threads are formed in the inner side wall of the puncture tube close to the lower end, and the second threads are matched with the first threads.

Compared with the prior art, the clinical puncture outfit has the advantages that:

1. through setting up two sets of braced frames, can rotate two sets of braced frames, drive puncture pipe and pjncture needle and rotate, rotate the fine setting to puncture pipe and pjncture needle's vertical position, and hollow regulating plate and picture peg can rotate thereupon, the picture peg is corresponding to be moved in hollow regulating plate, and through gag lever post, gear one cooperation slot etc. can be fixed the position of hollow regulating plate, thereby can support puncture pipe and pjncture needle's position well, assist medical personnel nimble fine setting puncture pipe and pjncture needle's gradient, make both can place on patient puncture position better perpendicularly, avoid the slope puncture, influence the puncture effect;

2. when in puncture, the fixed ring can move downwards along with the main body, the movable rod moves along the thread groove, the guide rod and the movable rod can be driven to rotate, the movable ring can be driven to rotate through the tooth groove matched with the gear II, the telescopic connecting rod can rotate along with the movable ring, the fixed ring can be driven to rotate, the main body and the puncture tube are driven to rotate, the puncture needle is driven to rotate, meanwhile, the main body, the puncture tube and the puncture needle move downwards, the telescopic connecting rod is gradually elongated, so that when the puncture tube and the puncture needle move downwards, the puncture tube and the puncture needle can simultaneously rotate automatically, the medical staff is assisted to puncture, and the physical strength of the medical staff during puncture is saved;

in conclusion, through setting up assist mechanism and can support the position of pjncture tube and pjncture needle well, assist medical personnel to finely tune the gradient of pjncture tube and pjncture needle in a flexible way, make both can place perpendicularly on patient puncture position better, avoid the slope puncture, influence the puncture effect, and can make both autogiration simultaneously when moving pjncture tube and pjncture needle downwards and carrying out the operation of puncturing, assist medical personnel to puncture, saved the physical power when medical personnel punctures.

Drawings

FIG. 1 is a schematic view of a clinical puncture outfit according to the present invention;

FIG. 2 is a schematic view of an auxiliary mechanism in a clinical puncture outfit according to the present invention;

FIG. 3 is an enlarged view of the portion A in FIG. 2 of a clinical puncture outfit according to the present invention;

FIG. 4 is a schematic view of a sleeve plate and a movable rod in a clinical puncture outfit according to the present invention;

FIG. 5 is a schematic view of a part of a clinical puncture outfit according to the present invention;

FIG. 6 is a schematic view of a part of a limiting mechanism in a clinical puncture outfit according to the present invention;

fig. 7 is a schematic view of a partial structure of an annular connecting plate and a sleeve plate in a clinical puncture outfit according to the present invention.

In the figure: 1. a main body; 2. a connecting cap; 3. a puncture tube; 4. a puncture needle; 5. a support frame; 6. a guide rod; 7. a retaining plate; 8. a splice plate; 9. a connecting shaft; 10. a first gear; 11. a U-shaped bracket; 12. a limit rod; 13. a return spring; 14. a circular plate; 15. a hollow adjusting plate; 16. inserting plate; 17. a nut; 18. a clamping block; 19. a sleeve plate; 20. a short bar; 21. a movable rod; 22. a thread groove; 23. a first ring groove; 24. an arc limiting plate; 25. a round hole; 26. u-shaped supporting plates; 27. an annular housing; 28. an annular connecting plate; 29. a movable ring; 30. a second ring groove; 31. an L-shaped slide plate; 32. a second gear; 33. a telescopic connecting rod; 34. an annular limit groove; 35. an auxiliary mechanism; 36. a limiting mechanism; 37. and a fixing ring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Referring to fig. 1-7, a clinical puncture outfit, including main part 1 and two sets of braced frames 5, main part 1 bottom surface fixedly connected with puncture pipe 3, puncture pipe 3 inside is inserted and is equipped with pjncture needle 4, puncture needle 4 upper end fixedly connected with connecting cap 2, the inside all rotation of two sets of braced frames 5 is connected with guide arm 6, threaded slot 22 has all been seted up to two sets of guide arm 6 lateral walls, the outside cover plate 19 that is close to upper end position all overlaps of two sets of guide arm 6, cover plate 19 top outer wall runs through and has seted up round hole 25, round hole 25 inside wall fixedly connected with quarter butt 20, and quarter butt 20 one end is fit with threaded slot 22, main part 1 outside fixedly connected with solid fixed ring 37, gu fixed ring 37 lateral wall has seted up annular one 23, and cover plate 19 one end sets up inside annular one 23, two sets of braced frames 5 lateral walls are close to the lower part position and all are provided with complementary unit 35, be provided with stop gear 36 above connecting cap 2, complementary unit 35 includes retaining plate 7, retaining plate 7 sets up in braced frame 5 one side position, retaining plate 7 top outer wall both sides are close to the position all fixedly connected with two sets of adapter plates 8.

A hollow adjusting plate 15 is inserted between the two groups of connecting plates 8, connecting shafts 9 are movably connected to the outer side walls of the two groups of connecting plates 8, one ends of the two groups of connecting shafts 9 are fixedly connected to the positions of the two outer side walls of the hollow adjusting plate 15 respectively, a plugboard 16 is inserted at one end of the hollow adjusting plate 15, a screw is inserted at one end, far away from the hollow adjusting plate 15, of the outer side wall of the plugboard 16, nuts 17 are sleeved on the positions, close to the outer side wall of the plugboard 16, of the screw, of the two groups of nuts 17 are screwed, and the position between the supporting frame 5 and the plugboard 16 is fixed.

The movable groove has all been seted up to picture peg 16 both lateral walls, the inside fixture block 18 that has been inserted of movable groove, fixedly connected with supporting spring between fixture block 18 one end and the movable groove inside wall, a plurality of groups draw-in grooves have all been run through to hollow regulating plate 15 both lateral walls, and the draw-in groove agrees with mutually with fixture block 18, fixture block 18 removes along the draw-in groove inside wall on its inclined plane under the drive of picture peg 16, remove gradually from the draw-in groove, and shrink in the movable groove, supporting spring compresses, after picture peg 16 shrink to required position, under the effect of supporting spring elasticity, the clamping block 18 one end card is established in corresponding draw-in groove, can be with the position fixation between hollow regulating plate 15 and the picture peg 16.

The U-shaped support 11 is fixedly connected to the outer side wall of the connecting plate 8, two groups of limiting rods 12 are inserted near the outer side wall of the U-shaped support 11, the first gear 10 is fixedly connected to the outer side wall of the connecting shaft 9 near the outer side wall of the connecting plate 8, a slot is formed in the position, close to one end of the limiting rods 12, of the connecting plate 8, the slot is matched with the limiting rods 12, the circular plate 14 is fixedly connected to one end, far away from the connecting plate 8, of the limiting rods 12, the reset spring 13 is sleeved outside the limiting rods 12 and is positioned between the circular plate 14 and the outer side wall of the U-shaped support 11, one end of the reset spring 13 is fixedly connected to the outer side wall of the U-shaped support 11, the other end of the reset spring 13 is fixedly connected to the outer side wall of the circular plate 14, one end of the limiting rods 12 can be driven to be inserted into the slot under the elastic force of the reset spring 13, and the limiting rods 12 are positioned between the first gear 10 and the first gear 10, so that the position of the first gear 10 can be limited, the position of the connecting shaft 9 is fixed, and the position of the hollow adjusting plate 15 is fixed.

When in use, the needle head of the puncture needle 4 is aligned with the puncture part of a patient and vertically placed, and simultaneously, the two groups of the resisting plates 7 are driven to cling to the body surface of the patient and approach the puncture part of the patient, the supporting frame 5 is supported by matching with the four groups of the hollow adjusting plates 15 and the inserting plate 16, the puncture tube 3 and the puncture needle 4 are supported, the circular plate 14 is pulled at the moment, the limiting rod 12 is driven to move out of the slot, the reset spring 13 is compressed, the two groups of the supporting frame 5 are rotated by the screw rod to drive the puncture tube 3 and the puncture needle 4 to rotate, the vertical positions of the puncture tube 3 and the puncture needle 4 are rotationally fine-tuned, so that the vertical positions of the puncture tube 3 and the puncture needle 4 can be kept with the patient, in the process, when the position of the puncture tube 3 is adjusted by the supporting frame 5 which is tilted left by taking the screw rod as a fulcrum, the two groups of the nuts 17 can be screwed after rotating the proper positions, the position between the supporting frame 5 and the plugboard 16 is fixed, one end of the hollow adjusting plate 15 rotates between the two groups of connecting plates 8 through the connecting shaft 9, one end of the plugboard 16 contracts inwards towards the hollow adjusting plate 15, the clamping block 18 moves along the inner side wall of the clamping groove under the drive of the plugboard 16, gradually moves out of the clamping groove and contracts in the movable groove, the supporting spring compresses, after the plugboard 16 contracts to a required position, one end of the clamping block 18 is clamped in the corresponding clamping groove under the action of the elastic force of the supporting spring, the position between the hollow adjusting plate 15 and the plugboard 16 can be fixed, meanwhile, when the hollow adjusting plate 15 rotates, the two groups of connecting shafts 9 rotate along with the connecting shafts, the first gear 10 is driven to rotate, after the adjustment, one end of the limiting rod 12 can be driven to be inserted into the slot under the action of the elastic force of the restoring spring 13, and the limiting rod 12 is positioned between the first gear 10 and the second gear at the moment, therefore, the position of the gear I10 can be limited, the position of the connecting shaft 9 is fixed, the position of the hollow adjusting plate 15 is fixed, the hollow adjusting plate 15 and the inserting plate 16 which are positioned on the right side of the puncture tube 3 are simultaneously rotated, one end of the inserting plate 16 moves outwards of the hollow adjusting plate 15, after the inclination of the puncture tube 3 is adjusted, the position of the hollow adjusting plate 15 and the position of the inserting plate 16 can be fixed, so that the position of the puncture tube 3 and the position of the puncture needle 4 can be well supported, and medical staff are assisted to flexibly and finely adjust the inclination of the puncture tube 3 and the puncture needle 4, so that the puncture tube 3 and the puncture needle 4 can be well vertically placed on a puncture part of a patient, inclined puncture is avoided, and the puncture effect is influenced.

Referring to fig. 1, 6 and 7, the limiting mechanism 36 includes two sets of U-shaped supporting plates 26, the two sets of U-shaped supporting plates 26 are respectively and fixedly connected to the outer side wall of the supporting frame 5 near the upper end position, an annular housing 27 is fixedly connected between one ends of the two sets of U-shaped supporting plates 26 far away from the supporting frame 5, two sets of movable rods 21 are movably connected to the bottom surface of the annular housing 27, one ends of the two sets of movable rods 21 far away from the annular housing 27 are respectively and fixedly connected with the upper ends of the two sets of guide rods 6, and the upper ends of the movable rods 21 are positioned at the inner part of the annular housing 27 and fixedly connected with a gear two 32.

The inside expansion ring 29 that is provided with of annular shell 27, a plurality of groups of tooth's socket have been seted up to expansion ring 29 lateral wall, and tooth's socket meshes with gear two 32, 27 top outer wall fixedly connected with annular connecting plate 28, annular connecting plate 28 inside wall has been seted up annular two 30, annular two 30 inside inserts has L shape slide 31, and annular connecting plate 28 one end fixed connection is kept away from to L shape slide 31 is in expansion ring 29 top outer wall position, expansion ring 29 bottom surface fixedly connected with two sets of expansion link 33, and expansion link 33 keep away from expansion ring 29 one end fixed connection in fixed ring 37 top outer wall position, gear two 32 follow the movable rod 21 and rotate, and cooperate the tooth's socket can drive expansion ring 29 through annular two 30 that annular connecting plate 28 inside wall was seted up of L shape slide 31 rotation in annular shell 27.

Annular limiting grooves 34 are formed in the upper inner side wall and the lower inner side wall of the annular groove I23, an arc limiting plate 24 is inserted into the annular limiting grooves 34, the arc limiting plate 24 is fixedly connected to one end position of the sleeve plate 19, a plurality of first threads are formed in the position, close to the lower end, of the outer side wall of the puncture needle 4, a plurality of second threads are formed in the position, close to the lower end, of the inner side wall of the puncture tube 3, the second threads are matched with the first threads, the rotary connecting cap 2 drives the puncture needle 4 to rotate, so that the locking of the second threads and the first threads is gradually released, the puncture needle 4 can be moved out of the puncture tube 3, the arc limiting plate 24 rotates along the annular limiting grooves 34 along with the sleeve plate 19, the sleeve plate 19 can be more stable in rotation, the rotary position of one end of the sleeve plate 19 can be limited, and one end of the sleeve plate 19 is prevented from moving out of the annular groove I23.

Specifically, after the position adjustment of the puncture tube 3 and the puncture needle 4 is finished, the connection cap 2 can be pressed downwards, the main body 1, the puncture tube 3 and the puncture needle 4 are driven to move downwards, in the process, the fixed ring 37 moves downwards along with the main body 1, and the two groups of sleeve plates 19 are driven to move downwards along the guide rod 6 installed in the support frame 5 through the round hole 25, one end of the movable rod 21 installed in the round hole 25 moves downwards along with the sleeve plates 19, and meanwhile, the other end of the movable rod 21 moves along the thread groove 22 formed in the guide rod 6, the guide rod 6 can be driven to rotate in the support frame 5, thereby driving the movable rod 21 to rotate, the gear II 32 follows the movable rod 21 to rotate, and the movable ring 29 can be driven to rotate in the annular housing 27 through the annular groove 30 formed in the inner side wall of the L-shaped sliding plate 31 in cooperation with the annular connecting plate 28, the telescopic connecting rod 33 can drive the fixed ring 37 to rotate along with the annular housing 27, the main body 1 and the puncture tube 3 to rotate, the puncture needle 4 is driven to rotate, and simultaneously, the main body 1, the puncture tube 3 and the puncture needle 4 move downwards along with the guide rod 4 move along with the thread groove 22 formed in the guide rod 6, the thread groove 22 can be driven to rotate, and the puncture needle 3 can be gradually moved out of the puncture tube 3 and the puncture needle 4 can be driven to rotate, and the puncture needle can be inserted into the puncture needle 3 from the puncture tube 3 to the puncture needle 4 through the medical staff.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (9)

1. The utility model provides a clinical puncture outfit, includes main part (1) and two sets of braced frame (5), its characterized in that: the utility model discloses a puncture device, including main part (1) bottom surface fixedly connected with puncture pipe (3), puncture pipe (3) inside is inserted and is equipped with puncture needle (4), puncture needle (4) upper end fixedly connected with connecting cap (2), two sets of all rotate inside support frame (5) are connected with guide arm (6), two sets of screw thread groove (22) have all been seted up to guide arm (6) lateral wall, two sets of outside be close to upper end position of guide arm (6) all overlap and are equipped with sleeve plate (19), sleeve plate (19) top outer wall runs through and has seted up round hole (25), round hole (25) inside wall fixedly connected with quarter butt (20), just quarter butt (20) one end agrees with screw thread groove (22), main part (1) outside fixedly connected with solid fixed ring (37), gu fixed ring (37) lateral wall has seted up annular one (23), just sleeve plate (19) one end sets up inside annular one (23), two sets of support frame (5) lateral wall are close to the lower part position and all are provided with auxiliary mechanism (35), connecting cap (2) inside wall is fixedly connected with quarter butt joint (35), retaining plate (7) are located in one side of the support frame (7), two groups of connecting plates (8) are fixedly connected to the positions, close to two sides, of the outer wall of the top of the retaining plate (7).

2. A clinical penetrator according to claim 1, wherein: two sets of insert between link up board (8) be equipped with hollow regulating plate (15), two sets of equal swing joint of link up board (8) lateral wall has connecting axle (9), and two sets of connecting axle (9) one end respectively fixed connection is in two lateral wall positions of hollow regulating plate (15), hollow regulating plate (15) one end is inserted and is equipped with picture peg (16), picture peg (16) lateral wall is kept away from hollow regulating plate (15) one end and is inserted and be equipped with the screw rod, and the outside cover that is close to picture peg (16) lateral wall position of screw rod is equipped with nut (17).

3. A clinical penetrator according to claim 2, wherein: the movable grooves are formed in the two outer side walls of the inserting plate (16), clamping blocks (18) are inserted into the movable grooves, supporting springs are fixedly connected between one ends of the clamping blocks (18) and the inner side walls of the movable grooves, a plurality of groups of clamping grooves are formed in the two outer side walls of the hollow adjusting plate (15) in a penetrating mode, and the clamping grooves are matched with the clamping blocks (18).

4. A clinical penetrator according to claim 3, wherein: the connecting plate (8) lateral wall fixedly connected with U-shaped support (11), two sets of gag lever posts (12) are close to inserting to U-shaped support (11) lateral wall, connecting axle (9) lateral wall is close to connecting plate (8) lateral wall position fixedly connected with gear one (10), slot has been seted up near gag lever post (12) one end position to connecting plate (8) lateral wall, and the slot agrees with gag lever post (12), gag lever post (12) are kept away from connecting plate (8) one end fixedly connected with circular plate (14).

5. A clinical penetrator according to claim 4, wherein: the limiting rod (12) is arranged outside and is positioned between the circular plate (14) and the outer side wall of the U-shaped bracket (11), the reset spring (13) is sleeved at the position, at one end, of the reset spring (13) is fixedly connected to the position, at the outer side wall of the U-shaped bracket (11), of the other end, and the other end of the reset spring is fixedly connected to the position, at the outer side wall of the circular plate (14).

6. A clinical penetrator according to claim 1, wherein: stop gear (36) are including two sets of U-shaped fagging (26), two sets of U-shaped fagging (26) are fixed connection respectively and are close to upper end position at braced frame (5) lateral wall, two sets of U-shaped fagging (26) are kept away from between braced frame (5) one end fixedly connected with annular shell (27), annular shell (27) bottom surface swing joint has two sets of movable rod (21), and two sets of movable rod (21) keep away from annular shell (27) one end respectively with two sets of guide arm (6) upper end fixed connection, movable rod (21) upper end just is located inside fixedly connected with gear two (32) of annular shell (27).

7. The clinical penetrator of claim 6, wherein: the novel annular shell is characterized in that a movable ring (29) is arranged inside the annular shell (27), a plurality of groups of tooth grooves are formed in the outer side wall of the movable ring (29), the tooth grooves are meshed with a second gear (32), an annular connecting plate (28) is fixedly connected to the outer wall of the top of the annular connecting plate (27), and a second annular groove (30) is formed in the inner side wall of the annular connecting plate (28).

8. A clinical penetrator according to claim 7, wherein: the annular groove II (30) is internally inserted with an L-shaped sliding plate (31), one end of the L-shaped sliding plate (31) away from the annular connecting plate (28) is fixedly connected to the outer wall position of the top of the movable ring (29), the bottom surface of the movable ring (29) is fixedly connected with two groups of telescopic connecting rods (33), and one end of the telescopic connecting rod (33) away from the movable ring (29) is fixedly connected to the outer wall position of the top of the fixed ring (37).

9. A clinical penetrator according to claim 1, wherein: annular limiting grooves (34) are formed in the upper inner side wall and the lower inner side wall of the first annular groove (23), arc-shaped limiting plates (24) are inserted into the annular limiting grooves (34), the arc-shaped limiting plates (24) are fixedly connected to one end of the sleeve plate (19), a plurality of first threads are formed in the position, close to the lower end, of the outer side wall of the puncture needle (4), a plurality of second threads are formed in the position, close to the lower end, of the inner side wall of the puncture tube (3), and the second threads are matched with the first threads.