CN112642027B

CN112642027B - Puncture point vein belongs to and props injection device

Info

Publication number: CN112642027B
Application number: CN202110004071.9A
Authority: CN
Inventors: 詹晓雁
Original assignee: Zhejiang Provincial Hospital of Traditional Chinese Medicine
Current assignee: Zhejiang Provincial Hospital of Traditional Chinese Medicine
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2022-03-22
Anticipated expiration: 2041-01-04
Also published as: CN112642027A

Abstract

The invention relates to the technical field of injection devices, in particular to a puncture point vein support injection device which comprises an injection device main body, wherein a supporting table is welded in the middle of the lower surface of the inner wall of the injection device main body, a clamping mechanism is arranged in the injection device main body, and the clamping mechanism comprises a first sliding block, a first connecting rod, a second sliding block, a supporting rod, a clamping plate, a second connecting rod, a third connecting rod, a sliding rod, a screw rod and a knob. The invention avoids the problems that the existing injection device is generally a single syringe, the structure is simple, when liquid is injected at the arm, some liquid is possibly thick, so that the injection is needed for a long time, the arm of a patient can possibly move in the injection process, and particularly when the patient is a child, the needle tube of the injection device can fall off from the blood vessel and even injure the patient, thereby greatly improving the practicability of the injection device.

Description

Puncture point vein belongs to and props injection device

Technical Field

The invention relates to the technical field of injection devices, in particular to a puncture point vein branch injection device.

Background

The vein is a blood vessel body which starts from a capillary vessel and conveys blood from organs and tissues of the whole body to return to the heart, the wall of the vein is thin, the lumen is large, the elasticity is small, the internal pressure is low, the blood flow is slow, the blood in the vein contains more carbon dioxide and is dark red, the venous branch injection device is an injection device for a superficial vein, the superficial vein is also called a subcutaneous vein, is a general name of a vein positioned in subcutaneous tissues and is an important component part of a medium vein and a small vein, and is mainly used for collecting superficial blood of skin and mucosa, merging the superficial blood into a deep large vein and infusing the blood back. The existing puncture point intravenous branch injection device basically meets the requirements of people, but still has some problems.

The existing injection device is generally a single injector, the structure is simple, when liquid is injected to an arm of a patient, the liquid is thick, the injection is needed for a long time, the arm of the patient can move in the injection process, especially when the patient is a child, the needle tube of the injection device can fall off from a blood vessel, even the patient is injured, the long-time injection can also lead the hand of a medical worker to be sour, the hand can swing left and right, the injection device can swing left and right, the blood vessel of the patient can also be injured, and therefore the problem can be solved by the injection device for the vein branch puncture point needing urgently.

Disclosure of Invention

The invention aims to provide a puncture point intravenous branch injection device, which aims to solve the problem that the existing injection device proposed in the background technology is generally a single injector, and the arm of a patient and the hand of a doctor can shake to cause injury to the blood vessel of the patient due to long-time injection.

In order to achieve the purpose, the invention provides the following technical scheme: a puncture point vein belongs to a thrust device, which comprises a thrust device main body, wherein a supporting table is welded in the middle of the lower surface of the inner wall of the thrust device main body, a clamping mechanism is arranged in the thrust device main body and comprises a first sliding block, a first connecting rod, a second sliding block, a supporting rod, a clamping plate, a second connecting rod, a third connecting rod, a sliding rod, a screw rod and a knob, first sliding grooves are formed in the left side and the right side of the inner wall of the thrust device main body, the first sliding block is clamped in the first sliding grooves, the inner side of the first sliding block is connected with the first connecting rod through a rotating shaft, the lower end of the first connecting rod is connected with the second sliding block through a rotating shaft, the second sliding block is clamped at the lower end of the thrust device main body, second sliding grooves matched with the second sliding block are formed in the thrust device main body, the supporting rod is welded on the upper surface of the second sliding block, and the upper end of the supporting rod is welded with a clamping plate, the front side and the rear side of the lower end of the right supporting rod are connected with second connecting rods through rotating shafts, the front side and the rear side of the lower end of the left second sliding block are connected with third connecting rods through rotating shafts, the left end of the second connecting rod is connected with the right end of the third connecting rod through a rotating shaft, the lower end of the injection device main body is provided with a first groove body, the second connecting rod and the third connecting rod are both positioned in the first groove body, the lower end of the second connecting rod is welded with a sliding rod, the lower surface of the inner wall of the first groove body is provided with a third sliding groove, the sliding rod is clamped in the third sliding groove, the middle part of the first sliding block on the right side is screwed with a screw rod through threads, the middle part of the first sliding block on the right side is provided with a threaded hole matched with the screw rod, and the upper end of the screw rod penetrates through the right end of the injection device main body and extends to the outside of the injection device main body, the lower end of the injection device main body is embedded into the lower end of the injection device main body, the right end of the injection device main body is provided with a round hole matched with the screw rod, the upper end of the screw rod is welded with a knob, the left end of the injection device main body is connected with a movable mechanism in a sliding mode, the movable mechanism is fixed through a fixing mechanism, a clamping mechanism is arranged in the movable mechanism, and an injector is fixed on the movable mechanism through the clamping mechanism.

Preferably, the moving mechanism comprises a third slider, a fourth connecting rod, a fifth connecting rod, a connecting block and an installation block, a fourth sliding groove is formed in the upper end of the left side surface of the inner wall of the injection device main body, the third slider is clamped in the fourth sliding groove, the right end of the third slider is connected with the fourth connecting rod through a rotating shaft, the other end of the fourth connecting rod is connected with the fifth connecting rod through a rotating shaft, the other end of the fifth connecting rod is connected with the connecting block through a rotating shaft, and the other end of the connecting block is connected with the installation block through a rotating shaft.

Preferably, the fixing mechanism comprises a fifth slider, a threaded column, a nut and a sixth connecting rod, a fifth sliding groove is formed in the middle of the lower surface of the fourth connecting rod, the fifth slider is clamped in the fifth sliding groove, the threaded column is welded to the front end of the fifth slider, the threaded column penetrates through the front end of the fourth connecting rod and extends to the outside of the fourth connecting rod, the sixth sliding groove matched with the threaded column is formed in the front end surface of the fourth connecting rod, the threaded column is screwed on the threaded column, the lower end of the fifth slider is connected with the sixth connecting rod through a rotating shaft, and the other end of the sixth connecting rod is connected with the left end of the connecting block through the rotating shaft.

Preferably, the fixing mechanism comprises a first insertion rod, a fixing plate, a spring and a handle, the lower end of the installation block is inserted with the first insertion rod, the left end of the first insertion rod penetrates through the left end of the installation block and extends to the outside of the installation block, a round hole matched with the first insertion rod is formed in the lower end of the installation block, the fixing plate is welded in the middle of the first insertion rod, a seventh sliding groove matched with the fixing plate is formed in the lower end of the installation block, the fixing plate is clamped in the seventh sliding groove, the spring is sleeved in the middle of the first insertion rod, one end of the spring is connected with the right side surface of the fixing plate in a welding mode, the other end of the spring is connected with the left side surface of the inner wall of the seventh sliding groove in a welding mode, and the handle is welded at the left end of the first insertion rod.

Preferably, the syringe includes second inserted bar, slot, syringe cylinder, fixture block, syringe needle and draw-in groove, and the lower surface of installation piece has seted up the jack, the jack interpolation is equipped with the second inserted bar, and the right-hand member of first inserted bar runs through the upper end of second inserted bar, the slot of mutually supporting with first inserted bar is seted up to the upper end of second inserted bar, and the lower extreme of second inserted bar is fixed with the syringe cylinder, it has the syringe needle to be fixed with the block on the syringe of syringe cylinder.

Preferably, the front-view cross sections of the support table and the clamping plate are arc-shaped, the support table and the clamping plate are used for conforming to the characteristics of arms of a human body, so that the support table and the clamping plate are more attached to the skin, and rubber pads are bonded to the upper surface of the support table and the inner side surface of the clamping plate and used for improving the comfort level in use.

Preferably, the lower extreme welding of connecting block has the dead lever, and the dead lever runs through the upper end of installation piece, and the upper end of installation piece is seted up the spacing groove of mutually supporting with the dead lever, and its effect is for restricting the installation piece pivoted angle, and its rotatable angle can be with the syringe needle insert in patient's the blood vessel.

Preferably, fixedly connected with fixture block on the syringe of syringe cylinder, and seted up the draw-in groove of mutually supporting with the fixture block in the draw-in groove, the fixture block is in the draw-in groove, and its effect is for preventing that the syringe needle from droing from the syringe cylinder when injecting to the patient, leads to the liquid medicine to spill, causes extravagant problem.

Compared with the prior art, the invention has the beneficial effects that:

1. the puncture point vein support injection device is provided with an injection device main body, a support table and a clamping mechanism, a patient places an arm on the support table, the first sliding block moves downwards by rotating the screw rod through the knob, the first connecting rod pushes the second sliding block to move inwards, so that the arm of the patient can be fixed by the splint, the existing injection device is prevented from being a single injector, the structure is simple, when injecting liquid to the affected arm, some liquid is thick, which causes the injection to be needed for a long time, it is possible that the patient's arm may move during the injection, especially if the patient is a child, which may cause the needle of the bolus device to fall out of the blood vessel, even cause injury problems to the patient, hold the patient's arm, when the liquid injection is carried out on the superficial vein on the arm, the arm can be effectively prevented from moving around, and the practicability of the device is greatly improved;

2. this puncture point vein belongs to a injection device and is provided with moving mechanism and fixed establishment, unscrew the nut, make the fifth slider can slide in the sixth spout, can adjust the position of connecting block, insert the needle tubing of syringe in the patient's blood vessel, tighten the nut, make the fifth slider unable the slip in the sixth spout, thereby can make the connecting block rock about unable, long-time injection also probably can make medical personnel's hand hair sour, the hand can rock about the hand, thereby lead to injecting and rock about the device, also can cause the damage to patient's blood vessel, even medical personnel's hand hair sour rock also can't make the connecting block take place to rock about also, the device's security has been improved greatly.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional elevation view of the structure of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic top cross-sectional view of the structure of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic perspective view of the clamping mechanism of the present invention;

FIG. 5 is a schematic view of the moving mechanism, the securing mechanism, the engaging mechanism and the syringe of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 5 according to the present invention;

FIG. 7 is a schematic right side cross-sectional view of the structure of FIG. 5 in accordance with the present invention;

FIG. 8 is an enlarged view of the structure of FIG. 7 at B in accordance with the present invention;

FIG. 9 is a schematic perspective view of a second plunger, a slot, a syringe barrel and a latch according to the present invention;

fig. 10 is a schematic perspective view of the syringe needle and the card slot of the present invention.

In the figure: 1. a bolus device body; 2. a support table; 3. a first chute; 4. a second chute; 511. a first slider; 512. a first connecting rod; 513. a second slider; 514. a support bar; 515. a splint; 516. a second connecting rod; 517. a third connecting rod; 518. a slide bar; 519. a screw rod; 520. a knob; 6. a first tank body; 7. a third chute; 8. a fourth chute; 911. a third slider; 912. a fourth connecting rod; 913. a fifth connecting rod; 914. connecting blocks; 915. mounting blocks; 10. a fifth chute; 1111. a fifth slider; 1112. a threaded post; 1113. a nut; 1114. a sixth connecting rod; 12. a sixth chute; 1311. a first plunger; 1312. a fixing plate; 1313. a spring; 1314. a handle; 14. a seventh chute; 1511. a second plunger; 1512. a slot; 1513. an injector syringe; 1514. a clamping block; 1515. a syringe needle; 1516. a card slot; 16. fixing the rod; 17. a limiting groove.

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.

Referring to fig. 1-10, an embodiment of the present invention is shown: a puncture point vein support injection device comprises an injection device body 1, a support table 2 is welded in the middle of the lower surface of the inner wall of the injection device body 1, a clamping mechanism is arranged inside the injection device body 1 and comprises a first sliding block 511, a first connecting rod 512, a second sliding block 513, a support rod 514, a clamping plate 515, a second connecting rod 516, a third connecting rod 517, a sliding rod 518, a screw rod 519 and a knob 520, first sliding grooves 3 are formed in the left side and the right side of the inner wall of the injection device body 1, a first sliding block 511 is clamped in the first sliding grooves 3, the inner side of the first sliding block 511 is connected with the first connecting rod 512 through a rotating shaft, the lower end of the first connecting rod 512 is connected with the second sliding block 513 through a rotating shaft, the second sliding block 513 is clamped at the lower end of the injection device body 1, a second sliding groove 4 matched with the second sliding block 513 is formed in the injection device body 1, a support rod 514 is welded on the upper surface of the second sliding block 513, a clamping plate 515 is welded on the upper end of the support rod 514, the front side and the rear side of the lower end of the right support rod 514 are connected with a second connecting rod 516 through a rotating shaft, the front side and the rear side of the lower end of the left second sliding block 513 are connected with a third connecting rod 517 through a rotating shaft, the left end of the second connecting rod 516 is connected with the right end of the third connecting rod 517 through a rotating shaft, the lower end of the injection device main body 1 is provided with a first groove body 6, the second connecting rod 516 and the third connecting rod 517 are both positioned in the first groove body 6, the lower end of the second connecting rod 516 is welded with a sliding rod 518, the lower surface of the inner wall of the first groove body 6 is provided with a third sliding groove 7, the sliding rod 518 is clamped in the third sliding groove 7, the middle part of the right first sliding block 511 is screwed with a screw rod 519, the middle part of the right first sliding block 511 is provided with a threaded hole mutually matched with the screw rod 519, and the upper end of lead screw 519 runs through the right-hand member of injection device main part 1 and extends to the outside of injection device main part 1, the lower extreme embedding of injection device main part 1 is at the lower extreme of injection device main part 1, and the right-hand member of injection device main part 1 sets up the round hole of mutually supporting with lead screw 519, the upper end welding of lead screw 519 has knob 520, and the left end sliding connection of injection device main part 1 has the moving mechanism, the moving mechanism is fixed through fixed establishment, and be provided with the block mechanism in the moving mechanism, the last syringe that is fixed with through the block mechanism that passes through of moving mechanism.

According to fig. 5, the movable mechanism includes a third slider 911, a fourth connecting rod 912, a fifth connecting rod 913, a connecting block 914 and an installation block 915, a fourth sliding groove 8 is formed in the upper end of the left side surface of the inner wall of the main body of the injection device 1, a third slider 911 is clamped in the fourth sliding groove 8, the right end of the third slider 911 is connected with the fourth connecting rod 912 through a rotating shaft, the other end of the fourth connecting rod 912 is connected with the fifth connecting rod 912 through a rotating shaft, the other end of the fifth connecting rod 913 is connected with the connecting block 914 through a rotating shaft, the other end of the connecting block 914 is connected with the installation block 915 through a rotating shaft, the position of the injector is convenient to adjust, the movable mechanism is matched with the fixed mechanism, and the movable mechanism can not swing left and right.

As can be seen from fig. 5 and 6, the fixing mechanism includes a fifth slider 1111, a threaded post 1112, a nut 1113 and a sixth connecting rod 1114, and the middle part of the lower surface of the fourth connecting rod 912 is provided with a fifth chute 10, a fifth slide block 1111 is clamped in the fifth chute 10, and a threaded column 1112 is welded on the front end surface of the fifth slider 1111, the threaded column 1112 penetrates through the front end of the fourth connecting rod 912 and extends to the outside of the fourth connecting rod 912, the front end surface of the fourth connecting rod 912 is provided with a sixth sliding slot 12 which is mutually matched with the threaded column 1112, the threaded column 1112 is screwed on the threaded column 1112, the lower end of the fifth slider 1111 is connected with a sixth connecting rod 1114 through a rotating shaft, the other end of the sixth connecting rod 1114 is connected with the left end of the connecting block 914 through a rotating shaft, can fix the moving mechanism through screwing up nut 1113, prevent that the moving mechanism from controlling and rocking, easy operation has improved the device's practicality greatly.

As can be seen from fig. 5 and 8, the fixing mechanism includes a first plunger 1311, a fixing plate 1312, a spring 1313 and a pull 1314, and a first insert bar 1311 is inserted into the lower end of the mounting block 915, the left end of the first insert bar 1311 penetrates the left end of the mounting block 915 and extends to the outside of the mounting block 915, the lower end of the mounting block 915 is provided with a circular hole matched with the first insert rod 1311, the middle part of the first insert rod 1311 is welded with a fixing plate 1312, and the lower end of the mounting block 915 is provided with a seventh sliding groove 14 matched with the fixing plate 1312, the fixing plate 1312 is clamped in the seventh sliding groove 14, and a spring 1313 is fitted in the middle of the first plunger 1311, one end of the spring 1313 is connected to the right side surface of the fixing plate 1312 by welding, and the other end of the spring 1313 is connected with the left surface of the inner wall of the seventh sliding groove 14 by welding, a handle 1314 is welded to the left end of the first plunger 1311, and the syringe can be conveniently assembled and disassembled by pulling the handle 1314.

As can be seen from fig. 7, 9 and fig. 10, the syringe includes a second plunger 1511, a slot 1512, a syringe barrel 1513, a latch 1514, a syringe needle 1515 and a latch 1516, and the lower surface of the mounting block 915 is provided with a jack into which the second plunger 1511 is inserted, the right end of the first plunger 1311 penetrates the upper end of the second plunger 1511, the upper end of the second plunger 1511 is provided with a slot 1512 engaged with the first plunger 1311, the lower end of the second plunger 1511 is fixed with the syringe barrel 1513, the syringe needle 1515 is fixed on the syringe of the syringe barrel 1513, and the syringe needle 1515 can be quickly mounted and removed with the movable mechanism in cooperation with the engagement mechanism.

The front section of the support table 2 and the clamping plate 515 is arc-shaped, which is used for fitting the characteristics of human arms and fitting the skin, and the upper surface of the support table 2 and the inner side surface of the clamping plate 515 are adhered with rubber pads, which are used for improving the comfort level in use.

The lower extreme welding of connecting block 914 has dead lever 16, and dead lever 16 runs through the upper end of installation piece 915, and the upper end of installation piece 915 is seted up the spacing groove 17 of mutually supporting with dead lever 16, and its effect is the angle of restriction installation piece 915 rotation, and its rotatable angle can be with the syringe needle insert in patient's the blood vessel.

A clamping block 1514 is fixedly connected to the injection tube of the injector needle tube 1513, a clamping groove 1516 matched with the clamping block 1514 is formed in the clamping groove 1516, and the clamping block 1514 is clamped in the clamping groove 1516 and is used for preventing the injector needle 1515 from falling off from the injector needle tube 1513 when a patient is injected, so that liquid medicine is spilled, and waste is caused.

The working principle is as follows: when in use, a patient puts the arm on the support table 2, the screw rod 519 is rotated through the knob 520, so that the right first slide block 511 moves downwards, the right first connecting rod 512 pushes the right second slide block 513 to move leftwards, the second connecting rod 516 opens towards two sides because the sliding rod 518 is clamped in the third sliding chute 7, the sliding rod 518 slides in the third sliding chute 7, so that the third connecting rod 517 opens towards two sides, the left second slide block 513 is driven to move rightwards, the left clamping plate 515 moves rightwards, the right first slide block 511 moves downwards, the two clamping plates 515 fix the arm of the patient on the support table 2 in a clamping manner, the spring 1313 is compressed by pulling the sixth connecting rod 1114, the first inserting rod 1311 is drawn out of the inserting hole 1512, so that the syringe cylinder 1513 can be taken out of the inserting hole 915, the liquid medicine is sucked into the syringe cylinder 1513, clamping the syringe needle 1515 on the liquid outlet pipe of the syringe needle cylinder 1513, rotating the syringe needle 1515 to enable the fixture 1514 to be clamped in the clamping groove 1516, pulling the handle 1314 again to insert the second plunger 1511 into the insertion hole on the upper side of the mounting block 915, loosening the handle 1314, restoring the spring 1313 to enable the first plunger 1311 to be inserted into the insertion groove 1512 again, loosening the nut 1113 to enable the fifth slider 1111 to slide in the fifth sliding groove 10, adjusting the syringe to a proper position, inserting the needle on the upper end of the syringe needle 1515 into the blood vessel of the patient, tightening the nut 1113, and ending the operation.

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.

Claims

1. The utility model provides a puncture point vein belongs to a bolus device, includes bolus device main part (1), its characterized in that: the middle part of the lower surface of the inner wall of the injection device main body (1) is welded with a support table (2), a clamping mechanism is arranged in the injection device main body (1), the clamping mechanism comprises a first sliding block (511), a first connecting rod (512), a second sliding block (513), a support rod (514), a clamping plate (515), a second connecting rod (516), a third connecting rod (517), a sliding rod (518), a screw rod (519) and a knob (520), the left side and the right side of the inner wall of the injection device main body (1) are respectively provided with a first sliding groove (3), the first sliding block (511) is clamped in the first sliding groove (3), the inner side of the first sliding block (511) is connected with the first connecting rod (512) through a rotating shaft, the lower end of the first connecting rod (512) is connected with the second sliding block (513) through a rotating shaft, and the second sliding block (513) is clamped at the lower end of the injection device main body (1), a second sliding groove (4) matched with the second sliding block (513) is formed in the injection device main body (1), a supporting rod (514) is welded on the upper surface of the second sliding block (513), a clamping plate (515) is welded at the upper end of the supporting rod (514), the front side and the rear side of the lower end of the right supporting rod (514) are connected with a second connecting rod (516) through rotating shafts, the front side and the rear side of the lower end of the second sliding block (513) on the left side are connected with a third connecting rod (517) through rotating shafts, the left end of the second connecting rod (516) is connected with the right end of the third connecting rod (517) through rotating shafts, a first groove body (6) is formed in the lower end of the injection device main body (1), the second connecting rod (516) and the third connecting rod (517) are located in the first groove body (6), a sliding rod (518) is welded at the lower end of the second connecting rod (516), a third sliding groove (7) is formed in the lower surface of the inner wall of the first groove body (6), and the sliding rod (518) is clamped in the third sliding chute (7), the middle part of the first sliding block (511) at the right side is screwed with a screw rod (519) through threads, the middle part of the first sliding block (511) at the right side is provided with a threaded hole which is matched with the screw rod (519), the upper end of the screw rod (519) penetrates through the right end of the injection device main body (1) and extends to the outside of the injection device main body (1), the lower end of the injection device main body (1) is embedded into the lower end of the injection device main body (1), and the right end of the injection device main body (1) is provided with a round hole matched with the screw rod (519), the upper end of the screw rod (519) is welded with a knob (520), and the left end of the injection device main body (1) is connected with a movable mechanism in a sliding way, the movable mechanism is fixed by a fixed mechanism, a clamping mechanism is arranged in the movable mechanism, and an injector is fixed on the movable mechanism through the clamping mechanism;

the movable mechanism comprises a third sliding block (911), a fourth connecting rod (912), a fifth connecting rod (913), a connecting block (914) and an installation block (915), a fourth sliding groove (8) is formed in the upper end of the left side surface of the inner wall of the injection device main body (1), the third sliding block (911) is clamped in the fourth sliding groove (8), the right end of the third sliding block (911) is connected with the fourth connecting rod (912) through a rotating shaft, the other end of the fourth connecting rod (912) is connected with the fifth connecting rod (913) through a rotating shaft, the other end of the fifth connecting rod (913) is connected with the connecting block (914) through a rotating shaft, and the other end of the connecting block (914) is connected with the installation block (915) through a rotating shaft;

the fixing mechanism comprises a fifth sliding block (1111), a threaded column (1112), a nut (1113) and a sixth connecting rod (1114), a fifth sliding chute (10) is arranged in the middle of the lower surface of the fourth connecting rod (912), a fifth sliding block (1111) is clamped in the fifth sliding chute (10), and the front end surface of the fifth sliding block (1111) is welded with a threaded column (1112), the threaded column (1112) penetrates through the front end of the fourth connecting rod (912) and extends to the outside of the fourth connecting rod (912), the front end surface of the fourth connecting rod (912) is provided with a sixth sliding chute (12) which is matched with the threaded column (1112), the threaded column (1112) is screwed on the threaded column (1112), the lower end of the fifth sliding block (1111) is connected with a sixth connecting rod (1114) through a rotating shaft, the other end of the sixth connecting rod (1114) is connected with the left end of the connecting block (914) through a rotating shaft;

the fixing mechanism comprises a first insert rod (1311), a fixing plate (1312), a spring (1313) and a handle (1314), the first insert rod (1311) is inserted into the lower end of the mounting block (915), the left end of the first insert rod (1311) penetrates through the left end of the mounting block (915) and extends to the outside of the mounting block (915), the lower end of the mounting block (915) is provided with a round hole matched with the first insert rod (1311), the fixing plate (1312) is welded in the middle of the first insert rod (1311), the lower end of the mounting block (915) is provided with a seventh sliding groove (14) matched with the fixing plate (1312), the fixing plate (1312) is clamped in the seventh sliding groove (14), the spring (1313) is sleeved in the middle of the first insert rod (1311), one end of the spring (1313) is connected with the right side surface of the fixing plate (1312) in a welding mode, and the other end of the spring (1313) is connected with the left side surface of the inner wall of the seventh sliding groove (14) in a welding mode, a handle (1314) is welded at the left end of the first insert rod (1311).

2. A puncture point intravenous bolus device according to claim 1, wherein: the syringe includes second inserted bar (1511), slot (1512), syringe cylinder (1513), fixture block (1514), syringe needle (1515) and draw-in groove (1516), and the lower surface of installation piece (915) has seted up the jack, the jack interpolation is equipped with second inserted bar (1511), and the upper end of second inserted bar (1511) is run through to the right-hand member of first inserted bar (1311), slot (1512) of mutually supporting with first inserted bar (1311) is seted up to the upper end of second inserted bar (1511), and the lower extreme of second inserted bar (1511) is fixed with syringe cylinder (1513), it has syringe needle (1515) to be fixed with the block on the syringe of syringe cylinder (1513).

3. A puncture point intravenous bolus device according to claim 1, wherein: the front section of the supporting table (2) and the clamping plate (515) is arc-shaped, and rubber pads are adhered to the upper surface of the supporting table (2) and the inner side surface of the clamping plate (515).

4. A puncture point intravenous bolus device according to claim 1, wherein: the lower extreme welding of connecting block (914) has dead lever (16), and dead lever (16) run through the upper end of installation piece (915), and the upper end of installation piece (915) is seted up and is mutually supported spacing groove (17) with dead lever (16).

5. A puncture point intravenous bolus device according to claim 2, wherein: a clamping block (1514) is fixedly connected to an injection tube of the injector needle cylinder (1513), a clamping groove (1516) matched with the clamping block (1514) is formed in the clamping groove (1516), and the clamping block (1514) is clamped in the clamping groove (1516).