CN204072958U - A kind of Novel anesthetic pain relief infusion pump - Google Patents

Abstract

A kind of Novel anesthetic pain relief infusion pump, is made up of urceolus, piston, push-rod assembly; Wherein piston rod, lock ring, push rod, banking stop and spring composition push-rod assembly; Spring is placed in banking stop and push rod central space, and pull putting strokes is to spring-compressed; Lock ring is sleeved on the appearance of push rod front end pipe; The axis of piston rod, push rod and the axis of its barrel bolt exist and offset.Extract rotating push rod after predetermined medicinal liquid, the outer ring axis of lock ring is separated with push rod axis, and this place's diameter is increased and forms incarceration with outer tube inner wall, make push rod incarceration, holding cylinder inner liquid medicine is stable.During infusion, reversion push rod, release push rod and spring, spring force makes pushrod advances, automatically completes the continuous infusion of medicinal liquid.Have structure simple, easy to use, safe and reliable, be particularly suited for field trauma first aid and daily continuous narcosis analgesia and infuse medical fluid.

Description

A kind of Novel anesthetic pain relief infusion pump

Technical field

This utility model relates to a kind of medical delivery device, particularly a kind of a kind of Novel anesthetic pain relief infusion pump with automatic infusion function.

Technical background

A kind of Novel anesthetic pain relief infusion pump of the present utility model is mainly used in medical object, by extracting medicinal liquid, with vein or tissue penetration pin and pipeline thereof, by medicine continue, slowly liquid be infused into tissue, blood vessel, neural position, maintain relatively permanent tissue (or blood) drug level, play relevant therapeutical effect; It is indispensable treatment utensil.

The like product existed in current domestic and international market has following a few class:

1, computer infusion pump: be with monolithic processor controlled peristaltic pump, by the interrupted extruding to liquid conduits, realize the continuous infusion of liquid, its speed can regulate, control, but the deficiencies such as accurate, the inconvenient basic unit also exist: active (needing power supply), volume are comparatively large, inconvenience is mobile, need health care professional to arrange adjustment, cost intensive, medical expense is high, needing special pump transfusion device supporting production capacity guarantee infusion velocity and field studies;

2, resilient bladder compression pump: utilize rubber elastomeric material to make sacculus, before using, needs to extract after medicinal liquid with syringe, then medicinal liquid to be transferred in sacculus (pressure that this process need is very large, make balloon expandable); Then by regulating the switch of infusion catheter, the infusion of medicinal liquid is realized.Its deficiency is: cost is higher, complex operation: need syringe extraction medicinal liquid to carry out shifting, increasing the chance of pollution.For balloon pump, the method that there is no understands the amount of liquid medicine (sacculus inner liquid medicine cannot be sentenced and know) in input human body accurately;

3, (subcutaneous) implanted analgesia pump in body: it is at home already for the analgesia therapy in postoperative or cancerous protuberance patient late period.Its deficiency is: need Operation, and under health care professional's operation, percutaneous puncture enters the window of liquid medicine storage capsule, could use; Moreover its at every turn can the amount of liquid medicine of infusion very little, (generally each be no more than 5ml); So it can not bear function and the requirement of continuous infusion larger dose medicinal liquid.

4, infusion monitor: must apply under gravity condition, it reads a speed of dripping drop in kettle by simple photoelectric sensor, be converted into by Single-chip Controlling the speed preset in real-time infusion velocity and single-chip microcomputer to contrast, then single-chip microcomputer exports deviation correcting signal, by micromachine and gear train, the tightness to adjustable clamp of infusing regulates, and makes real-time infusion velocity consistent with pre-set velocity.Its deficiency is: limited by gravity environment, and inconvenience is mobile, and its cost is also higher, and each use needs parameters, can not meet the requirement of field studies whenever and wherever possible.

Above four class anesthesia infusion pumps are medical apparatus that can realize automatic infusion function popular both at home and abroad at present, and wherein computer infusion pump and infusion watch-dog, is mainly used in the liquid continuous infusion process of inpatient; Computer infusion pump can be applied in non-gravity environment; Implanted pump is mainly used in the processes such as the chemotherapy of Postoperative analgesia or local organization, and balloon pump is mainly used in the continuous infusion therapeutic process needing medicinal liquid in postoperative or associated treatment; But there is different defects all respectively in above-mentioned four class infusion pumps, the difference restriction making it be subject to various factors in clinical practice: as under active, gravity condition, cannot or inconvenience mobile, observe infusion amount inconvenience, cost intensive, single application expense (price) are high, need special consumptive material participation (as specialized transfusion system, filling utensil) medicinal liquid filling or transfer process, complex operation, need Operation etc., make troubles all to its application in clinical treatment, field emergency or strictly restriction and can not playing a role.---as: computer infusion pump, infusion monitor are only for the fixed environment of inpatient, and the latter needs gravity condition, are more difficult to mobile; Implantable pump is only for chemotherapy or the analgesia therapy of postoperative blink; Balloon pump may be used for above-mentioned various environment, but needs charging device and operation, and is difficult to the actual dose monitoring infusion, and infusion of therapeutic is in no-control state applies, makes therapeutic quality be difficult to ensure.

Need according to the difference of clinical treatment and field emergency and simplify the operation and the requirement of security control, the solution of the analgesia infusion pump that above-mentioned functions requires can be met simultaneously: a kind of structure is simple, it is easy, with low cost to make, simple operation, easy to carry, be widely used, a kind of Novel anesthetic pain relief infusion pump of infusion safety; At present, not yet open at home and abroad.

summary of the invention

This utility model is just to provide a kind of a kind of Novel anesthetic pain relief infusion pump that can meet above-mentioned environment and functional requirement.Its technical scheme is such: this utility model forms basic structure and the function of infusion pump by urceolus, piston and push-rod assembly.A kind of Novel anesthetic pain relief infusion pump, is made up of urceolus, piston, push-rod assembly; Wherein piston rod, lock ring, push rod, banking stop and spring composition push-rod assembly; It is characterized in that: banking stop is arranged on the lower end in the vacancy of push rod cross central authorities down with concave surface, lock ring is sleeved on the pipe appearance of push rod upper end; The barrel bolt of piston-rod lower end inserts in the endoporus of the pipe of push rod upper end; Spring is positioned at the space of the vacancy of push rod cross central authorities, its lower end conflict banking stop, upper end conflict piston-rod lower end disk; The formation push-rod assembly that cooperatively interacts of above-mentioned relational structure; After described push-rod assembly front end piston set, load outer tube inner chamber and piston forms slipper seal, the neighboring of banking stop is arranged on urceolus hypomere inwall constriction ring along forming this utility model.

The lower end inner wall of urceolus has a constriction ring, and its diameter is less than the external diameter of banking stop.Banking stop is a spill disk, is distributed with four latasutures at its surface uniform, and seam width is slightly larger than the wall thickness of push rod cross stringer.Lock ring is interconnected to constitute with several rib by two annulus of decentraction; Its outer annular diameter D62 is equal to or slightly less than urceolus internal diameter D0; Its diameter D61 of interior 61 is slightly larger than the external diameter of push rod upper end pipe; Side-play amount S between the axial line & 62 of outer shroud and the axial line & 61 of internal ring is greater than 0.10mm.

The lower end of piston rod is connected with a barrel bolt, is evenly provided with four latasutures at the perisporium of barrel bolt, and the width of seam has outside crimping slightly larger than the wall thickness of push rod cross 44 stringer, the lower edge of barrel bolt; Side-play amount S between the axis & 31 of barrel bolt and piston rod cross axis & 32 is greater than 0.10mm.The upper end of push rod is connected with a pipe, and its external diameter is slightly less than the internal diameter D61 of the internal ring of lock ring; The diameter of bore of described pipe is slightly larger than the external diameter of piston-rod lower end barrel bolt; The central authorities of epimere cross in push rod, have a vacancy, extend upwardly to push rod upper limb, and the length L of this vacancy is less than the length of spring, and its width is slightly larger than the external diameter of spring.The axis & 41 of pipe is greater than 0.10mm with the side-play amount S of push rod cross axis & 42.The barrel bolt of piston-rod lower end inserts in the endoporus of push rod upper end pipe, and makes the dead in line of piston rod, push rod cross; Lock sleeve is contained in the appearance of pipe, also makes the cross dead in line of the axis of the outer shroud of lock ring and piston rod, push rod.Banking stop is arranged in the vacancy of stage casing central authorities on push rod, and its periphery is supported by the constriction ring of overcoat hypomere inwall again, and outer pulling-pushing rod handle can to spring-compressed; Rotating push rod, lock ring and push rod asynchronous rotary, can make the outer ring axis & 62 of lock ring depart from the axis & 2 of piston rod, push rod, the outer diameter D 6 of lock ring place and push rod compound be increased, is greater than urceolus internal diameter D0; Push rod forms incarceration at this place and outer tube inner wall and locks; Reversion push rod, can reduce the external diameter of this place's push rod, release push rod and spring.

Pull push rod drives piston, medicinal liquid can be drawn into outer tube inner chamber; Meanwhile, spring is compressed in the space between the vacancy of stage casing central authorities on push rod and banking stop.

A kind of Novel anesthetic pain relief infusion pump of this utility model, take full advantage of the feature of syringe, increase only mechanical spring push structure, achieve the expectation function of automatic infusion, its advantage is:

Structure is simple, easy and simple to handle, easy to carry, easy to manufacture, with low cost, reduce the manipulation strength of medical personnel, reduce the use of auxiliary consumptive material, reduce the medical expense of patient; Improve precision and the curative effect of infusion, safe and reliable.

accompanying drawing explanation

The overall structure decomposing schematic representation of the present utility model of Fig. 1;

Fig. 2 is outer tube structure schematic diagram of the present utility model;

Fig. 3 is the structural representation of lock ring of the present utility model;

Fig. 4 is pusher structure schematic diagram of the present utility model;

Fig. 5 is piston rod construction schematic diagram of the present utility model;

Fig. 6 is the structural representation after push-rod assembly of the present utility model combination;

Fig. 7 is after push-rod assembly of the present utility model and Piston assembling, push rod postrotational structural representation relative to lock ring;

Fig. 8 is the complete structure schematic diagram of a kind of Novel anesthetic pain relief infusion pump of this utility model;

Fig. 9 be this utility model after completing infusion, push rod is discharged into the schematic diagram bottom outer cylinder front end,

detailed description of the invention

In order to better understand the technical solution of the utility model, by reference to the accompanying drawings this utility model is described in detail.

As shown in Figure 1, this utility model is made up of jointly urceolus 1, piston 2, piston rod 3, push rod 4, banking stop 5, lock ring 6 and spring 7.Urceolus 1 is a cylinder-like structure, and there is spiral interface 11 front end, the handle that rear end has outside crimping 13 to be formed.Piston 2 is that cap-like structure, its periphery of being made up of elastomeric material has several outstanding annulars, and its external diameter is slightly larger than the internal diameter of urceolus 1.Piston rod 3 is crossbar structure, and its upper end is connected with the disk 31 and 32 of two concentrics; The hypomere of piston rod 3 also have one with the wafer architecture of above-mentioned two disk concentrics, in the below of this disk, have a barrel bolt 33, be evenly provided with four longitudinal joints 331 at the sidewall of barrel bolt 33, at the oriented crimping 332 turned up of the lower end outer rim of barrel bolt 33.Push rod 4 is also cross 44 rod-like structure, has a disk 45, become operating handle in its lower end; In push rod 4, epimere has a vacancy 43 equidistant with cross axial line, upwards extends until the upper limb of push rod 4; A pipe 41 is connected with at the upper limb of push rod 4.Banking stop 5 is spill disks, and its surface is evenly equipped with four and cracks 51.Lock ring 6 is nonconcentric(al) double ring type structures, has several rib to be connected by two rings between outer shroud 61 with internal ring 62.Spring 7 is the stage clips be made up of stainless steel material.

Composition graphs 1 and Fig. 2 known.Urceolus 1 is a cylindrical structure, and there is a spiral interface 11 its upper end, and its perforate is connected with outer tube inner chamber; Urceolus intracavity diameter is D0, and urceolus 1 hypomere inwall has a constriction ring 12, and this ring internal diameter D1 is less than the external diameter of banking stop 5; The handle that outside crimping 13 is formed is had in the lower end of urceolus.

Fig. 3 is the structural representation of lock ring 6 of the present utility model, the 3-D view of Fig. 3-be 1. Fig. 3-2., as shown in Figure 3, lock ring 6 is interconnected to constitute by rib by two nonconcentric(al) loop configuration, and the side-play amount between outer shroud 62 axial line the & 62 and axial line & 61 of internal ring 61 is S; The diameter D62 of outer shroud 62 is slightly less than or equals the internal diameter of urceolus 1, and the interior diameter D61 of the internal ring 61 of lock ring 6 is slightly larger than the external diameter of push rod 4 upper end pipe 41.

Fig. 4 is push rod 4 structural representation of the present utility model, the side view of Fig. 4-be 2. Fig. 4-1.; Composition graphs 1, as shown in Figure 4, the length L of the vacancy 43 of epimere central authorities in push rod 4, is slightly less than the length of spring 7, its width slightly larger than the external diameter of spring 7; Have a pipe 41 at the upper limb of push rod 4, its endoporus 42 diameter is slightly larger than the external diameter of piston-rod lower end barrel bolt 33; Exist between the axial line & 41 of pipe 41 and push rod 4 cross axial line & 42 and offset, this side-play amount is S.

Fig. 5 is piston rod construction schematic diagram of the present utility model, the side view of Fig. 5-be 2. Fig. 5-1.; Composition graphs 1, as shown in Figure 5, piston rod 3 is cross structure, and its upper end is connected with disk 31 and disk 32, and the external diameter of disk 32 is slightly less than or equals the internal diameter of urceolus 1, and the shape size of disk 31 mates with the inner chamber of piston 2; The lower end of piston rod 3 is connected with barrel bolt 33, and the perisporium of barrel bolt 33 is evenly provided with four longitudinal joints 331, the width of longitudinal joint 331, slightly larger than the thickness of push rod cross 44 longitudinal direction; The outside crimping 332 of lower edge of barrel bolt 33 forms barb-like step; The circle central axis of barrel bolt 33 and the cross axial line of piston rod 3 exist and offset, and side-play amount is S.The external diameter of barrel bolt 33 is slightly less than the internal diameter of the endoporus 42 of the pipe 41 of push rod upper end.

The side-play amount S that the axial line & 62 of the outer shroud 62 of described the lock ring 6 and side-play amount S of its internal ring 61 axial line & 61 equals the axis & 42 of described piston rod 3 and the axial line & 31 of its barrel bolt 33 also equals described push rod 4 axis & 42 and the side-play amount S of its pipe 41 axial line & 41; Side-play amount S is greater than 0.10mm.

Fig. 6 is the combinative structure schematic diagram of push-rod assembly of the present utility model, composition graphs 1, banking stop 5 is tilted to insert in the vacancy 43 of push rod 4 central authorities, insert corresponding with the cross longitudinal wall 44 of push rod for its four gaps 51 again, make banking stop 5 concave surface put into the lower end of the vacancy 43 of push rod 4 down; Spring 7 is put into the vacancy 43 of push rod 4, then the internal ring 61 of lock ring 6 is sleeved on the outer surface of pipe 41 of push rod 4 upper end; Then the barrel bolt 33 of piston rod 3 lower end is inserted in pipe 41 endoporus 42 of push rod 4, firmly pressing, make the crimping 332 of barrel bolt 33 lower end cross pipe 41, make piston rod, push rod forms chimeric; Note when grafting, make that four of barrel bolt 33 longitudinal joints 331 and the inner side longitudinal wall of push rod 4 cross 44 are mutual correspondingly to be plugged together, make the mutual firm plug of piston rod, push rod, the cross axial line of piston rod, push rod is so just made to overlap, also make the axial line & 62 of lock ring 6 outer shroud 62 overlap with it simultaneously, become unified axis & 2 (& 62); Simultaneously the barrel bolt 33 of piston rod and the axial line of the pipe 41 of push rod 4 and the axial line of lock ring 6 internal ring 61 also overlap completely, become new axis & 1.Now, push-rod assembly becomes the cylinder of a concentric, and its each section of maximum outside diameter D2 is all slightly less than or equals the internal diameter D0 of urceolus 1.

Fig. 7 is the structural representation after push-rod assembly of the present utility model installs piston, if push-rod assembly is arranged in urceolus 1, under rotational case, lock ring 6 can by urceolus 1 inwall resistance friction, then can make lock ring and piston rod, push rod rotates and occurs asynchronous (see Fig. 6), axle center is there is and offsets in the outer shroud 62 because of lock ring 6 with its internal ring 61, piston rod, also there is skew in the barrel bolt of push rod and its cross axle center, the combined effect of the two differential rotation, the axial line & 62 of lock ring 6 outer shroud 62 can be made and occur the skew of a times increment (two times of axle center side-play amount S) with push rod cross axial line & 2, the side of lock ring outer shroud 62 is made to offset the cylinder of (disengaging) push-rod assembly, the outer diameter D 6 of lock ring 6 place and push rod compound is increased, (the ultimate range D6 of the outer thoughtful offside push rod periphery of lock ring outer shroud 62) is greater than the internal diameter (D6=D2+2S > D0) of urceolus 1.

Fig. 8 is a kind of Novel anesthetic pain relief infusion pump of the present utility model overall structure schematic diagram in a situation of use.As seen from the figure, when extracting medicinal liquid, both hands pull out the handle 45 of push rod 4, drive piston 2, form negative pressure, can extract medicinal liquid in urceolus 1.External diameter due to banking stop 5 equals the internal diameter of urceolus 1, and concave surface is installed on constriction ring 12 place of urceolus hypomere down, to the support that banking stop 5 is formed, spring 7 can be made while external force pulling-pushing rod to be compressed.

When extracting medicinal liquid and reaching predetermined volumes, both hands rotating push rod and urceolus, make push rod and urceolus that relative rotation occur, along with the relative asynchronous rotation of lock ring, can feel that resistance marrow rotates to increase gradually, be increased to can not stop during turn push rod until resistance, now, because relative deflection occurs the lock ring 6 of push rod epimere, the composite diameter D6 formed after making the outer ring axis & 62 of lock ring 6 offset push rod axial line & 2 increases the internal diameter D0 being greater than urceolus 1, urceolus 1 inwall is formed and forces locking (incarceration), push rod is made to rest on rotary lock position, can not move forward and backward, keep the stable of urceolus 1 inner liquid medicine.

When needs infuse medical fluid, urceolus 1 front end spiral interface 11 and infusion flexible pipe and tissue or venipuncture needle can be connected, the speed control unit of adjustment pipeline, opposite direction rotating push rod again, outer shroud 62 axial line of lock ring 6 is returned and piston rod, the axial line of push rod overlaps, remove push rod to the incarceration of outer tube inner wall, retracting spring (placing infusion pump), under the effect of spring 7 mechanical force, complete the automatic infusion process (see Fig. 9: a kind of Novel anesthetic pain relief infusion pump of the present utility model structural representation after a procedure) of medicinal liquid, now spring 7 is released, push rod moves forward completely, piston 2 contacts urceolus 1 front inner wall, medicinal liquid is by complete infusion.

Because this utility model have employed the basic structure of syringe, using mechanical compression springs as infusion power; And have employed compound push rod combinative structure, utilize the non-concentric axle construction of lock ring, make this utility model have following characteristics:

This utility model and aforesaid four class infusion pumps contrast, there is structure simple, with low cost, infusion pump and medicinal liquid filling apparatus unite two into one (aforesaid four class infusion pumps all need independent medicinal liquid filling apparatus), and passive, portable moveable feature;

This utility model has in clinical practice: easy to use, simple to operate (once complete, do not need again medicinal liquid to be transferred in the pump housing---as implantable pump, balloon pump; Do not need power supply and controling parameters be set yet), be convenient to mobile, be particularly suitable for the first aid infusion under the non-gravity condition in field trauma; The containing mark line that infusion process observable outer tube wall is printed, grasp at any time and understand infusion dosage number, be convenient to adjust first aid scheme at any time according to injury in traumatic condition of patient change.Make infusion process safer.

Spring in push-rod assembly of the present utility model, when not using, is in release conditions, makes the product quality life-span of the present utility model more lasting, uses safer.

Claims (8)

1. a Novel anesthetic pain relief infusion pump, is made up of urceolus (1), piston (2), push-rod assembly; Wherein piston rod (3), lock ring (6), push rod (4), banking stop (5) and spring (7) composition push-rod assembly; It is characterized in that: banking stop (5) is arranged on the lower end in the vacancy (43) of push rod (4) cross central authorities down with concave surface, lock ring (6) is sleeved on pipe (41) appearance of push rod upper end; The barrel bolt (33) of piston rod (3) lower end inserts in the endoporus (42) of the pipe (41) of push rod (4) upper end; Spring (7) is positioned at the space of the vacancy (43) of push rod cross central authorities, its lower end conflict banking stop (5), upper end conflict piston rod (3) lower end disk; The formation push-rod assembly that cooperatively interacts of above-mentioned parts; Behind described push-rod assembly front end piston set (2), form slipper seal with piston (2) after loading urceolus (1) inner chamber, the neighboring of banking stop (5) is arranged on the upper edge of urceolus hypomere inwall constriction ring (12).

2. a kind of Novel anesthetic pain relief infusion pump according to claim 1, is characterized in that: the lower end inner wall of urceolus (1) has a constriction ring (12), and its diameter is less than the external diameter of banking stop (5).

3. a kind of Novel anesthetic pain relief infusion pump according to claim 1, it is characterized in that: banking stop (5) is a spill disk, be distributed with four latasutures (51) at its surface uniform, seam width is slightly larger than the wall thickness of push rod cross (44) stringer.

4. a kind of Novel anesthetic pain relief infusion pump according to claim 1, is characterized in that: lock ring (6) is interconnected to constitute with several rib by nonconcentric(al) two annulus; Its outer shroud (62) diameter D62 is equal to or slightly less than urceolus (1) internal diameter D0; The diameter D61 of its internal ring (61) is slightly larger than the external diameter of push rod (4) upper end pipe (41); Between the axial line & 62 of outer shroud (62) and the axial line & 61 of internal ring (61), side-play amount S is greater than 0.10mm.

5. a kind of Novel anesthetic pain relief infusion pump according to claim 1, it is characterized in that: the lower end of piston rod (3) is connected with a barrel bolt (33), the perisporium of barrel bolt (33) is evenly provided with four latasutures (331), and the width of seam has outside crimping (332) slightly larger than the wall thickness of push rod cross (44) stringer, the lower edge of barrel bolt (33); Side-play amount S between the axis & 31 of barrel bolt (33) and piston rod (3) cross axis & 32 is greater than 0.10mm.

6. a kind of Novel anesthetic pain relief infusion pump according to claim 1, it is characterized in that: the upper end of push rod (4) is connected with a pipe (41), its external diameter is slightly less than the internal diameter D61 of the internal ring (61) of lock ring (6); Endoporus (42) diameter of described pipe (41) is slightly larger than the external diameter of piston rod (3) lower end barrel bolt (33); The central authorities of epimere cross in push rod, have a vacancy (43), extend upwardly to push rod upper limb, and the length L of this vacancy (43) is less than the length of spring (7), and its width is slightly larger than the external diameter of spring (7); The axis & 41 of pipe (41) is greater than 0.10mm with the side-play amount S of push rod (4) cross axis & 42.

7. a kind of Novel anesthetic pain relief infusion pump according to claim 1, it is characterized in that: the barrel bolt (33) of piston rod (3) lower end inserts in the endoporus (42) of the pipe (41) of push rod (4) upper end, and makes the dead in line of piston rod, push rod cross; Lock ring (6) is sleeved on the appearance of pipe (41), also makes the cross dead in line of the axis of the outer shroud (62) of lock ring (6) and piston rod, push rod.

8. a kind of Novel anesthetic pain relief infusion pump according to claim 1, it is characterized in that: banking stop (5) is arranged in the vacancy (43) of the upper stage casing central authorities of push rod (4), its periphery is supported by the constriction ring (12) of overcoat (1) hypomere inwall again, and outer pulling-pushing rod handle (13) can be compressed spring (7); Rotating push rod, lock ring (6) and push rod asynchronous rotary, the outer shroud of lock ring (6) (62) axis & 62 can be made to depart from the axis & 2 of piston rod, push rod, the outer diameter D 6 of lock ring (6) place and push rod compound is increased, is greater than urceolus (1) internal diameter D0; Make push rod and lock ring and outer tube inner wall form incarceration to lock; Reversion push rod, can reduce the external diameter of this place's push rod, release push rod and spring.