CN2251358Y

CN2251358Y - Hand driven suction gun for cutting nucleus pulposus of lumbar intervertebral disc

Info

Publication number: CN2251358Y
Application number: CN 95227508
Authority: CN
Inventors: 肖忠贤
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-11-17
Filing date: 1995-11-17
Publication date: 1997-04-09
Anticipated expiration: 2005-11-17

Abstract

The utility model discloses a hand driven suction gun for cutting nucleus pulposus of lumbar intervertebral disc, and the shape of the utility model is like a pistol. A cylindrical body 11 of which two ends are cooperated with a shell wall by means of sliding is arranged in the outer shell 8 of a gun body; a central through hole 14 is arranged in the cylindrical body and a spring 7 is sheathed on the cylindrical body; a joint 15 connected with a standby aspirator is formed at a position where one end of the cylindrical body extends out of the shell; inner and outer cutting pipes (2, 3) are inserted at the front end of the outer shell, wherein, the inner cutting pipe extends into the central hole of the cylindrical body, the port of the outer cutting pipe is blocked, and a notch 1 is arranged on the end of the outer cutting pipe. A trigger can act on an annular blocking plate 9 at the back end of the cylindrical body; under the action of the trigger, the inner cutting pipe generates reciprocating movement along with the cylindrical body, and shearing is formed at the notch.

Description

Manual type lumbar nucleus pulposus cutting suction rifle

This utility model relates to a kind of manual type lumbar nucleus pulposus cutting suction rifle that is used on the human body.

The people who suffers from the outstanding disease of lumbar nucleus pulposus, the best way is to extract vertebral pulp, has at present to adopt electrodynamic type section and suction of nucleus machine to treat.This machine has import and home-made, the costing an arm and a leg of import, and up to more than 40,000 dollars, some medical institutions is difficult to purchase; And home-made quality does not pass a test.But no matter import and home-made electrodynamic type section and suction of nucleus machine, wherein motor and conducting parts often break down, and operation can't be carried out, and the Halfway Stopping operation brings misery to the patient.Motor on the cutting and sucking machine and circuit part can not carry out disinfection, do not meet sterile working's requirement, simultaneously also can produce other inflammation, because of in operative process, there being water liquid to infiltrate, can cause the generation of leaky so in addition, be unfavorable for safety operation, again in by acting on human body, this machine can produce vibration under the driven by motor effect, make the patient produce fear, the influence treatment.

The purpose of this utility model is to avoid weak point in the above-mentioned prior art, and a kind of manual type lumbar nucleus pulposus cutting suction rifle of suitable practicality simple in structure is provided.

The purpose of this utility model can reach by the following technical programs: in conjunction with pistol structure and operating principle, seemingly forming the multipath cylindrical cavity in the shell of pistol, the cylinder of band central duct is housed in the inner chamber, be with spring on the cylinder, the front end of cylinder and body of a gun shell are slidable fit, and the joint that is communicated with inner chamber is housed on this end housing, and the ring plate washer with the shell slidable fit is arranged on the rear end of cylinder, this newel post's body stretches out body of a gun shell, has on the external part with other to be equipped with the joint that suction pump is connected.Trigger is contained on the handle on the pistol, and trigger one end rides on the above-mentioned ring plate washer, can produce along body of a gun direction at the effect lower prop of trigger and come and go displacement.Forms the inside and outside Pipe Cutting in (gap) chamber between being inserted by body of a gun shell front end, wherein interior Pipe Cutting is stretched in the lumen pore road in the above-mentioned cylinder, and ring cavity is communicated with body of a gun inner chamber.The port of Pipe Cutting is by shutoff, and otch is arranged at this end top; The front end of interior Pipe Cutting come and go with above-mentioned cylinder in the displacement process with outside the Pipe Cutting upper cut can produce shear action to cut material (vertebral pulp), the vertebral pulp of shearing is attracted the device sucking-off with liquid (saline) in interior Pipe Cutting, can finish the design's purpose.

Stretch into above-mentioned cylinder for Pipe Cutting in making and form one, can adopt the cylinder of two sections screw threads, pipe end formation toroidal was squeezed between two sections cylinders after the leading portion cylinder was passed in interior Pipe Cutting.In conjunction with actual needs, can adopt the inside and outside Pipe Cutting of elongated thin-walled, wherein the front end of interior Pipe Cutting can stretch into otch in the cylinder generation displacement process at random under trigger role, can form shear action.

This utility model can produce following effect than above-mentioned prior art, by structure chart as can be known, this utility model is simple in structure, all simpler than pistol structure, cost is also with regard to over one hundred unit, and the vertebral pulp excision does not need higher operating frequency, manually can meet the demands, thereby the vibration of elimination in operating process, complete machine can under high pressure be sterilized, and meets sterile working's requirement.In view of this, the medical institutions that this machine is fit to insufficient funds use, but large tracts of land is promoted.

Figure is this utility model complete section diagrammatic sketch

Below in conjunction with accompanying drawing will the utility model is described in further detail:

In conjunction with human body upper lumbar spine intercalated disc vertebral pulp cutting suction requirement, according to the pistol structure working principle, shown in accompanying drawing, shape such as pistol body.Body of a gun shell 8 forms reducing inner chambers 17, can be made into little, in, three sections cylindrical cavities 17 of large diameter, 17 li cylinders 11 that band central through hole road 14 is housed of inner chamber.On cylinder 11, be with the spring 7 of returning in the inner chamber of middle footpath, for being slidingly matched, the joint 6 that is communicated with inner chamber 17 be housed on the shell in this path chamber in the front end insertion path chamber of cylinder 11, be communicated with saline container by joint 6.Have with shell 8 slidable fit on the rear end of cylinder 11 and can be the ring baffle plate 9 of one, ring baffle plate 9 is sliding in chamber, big footpath, and this newel post's body 11 stretches out shell (end cap 10), has on the external part with other to be equipped with the joint 15 that suction pump is connected.Trigger is to be contained on the handle 13 on the rifle, and the two (12,13) are hinged, and the working end of plate machine 12 rides on the back of ring baffle plate 9.Front port place by shell 8 inserts inner and outer pipes (2,3).Forming ring cavity 16 between two pipes (2,3) is communicated with inner chamber 17, the stretching into port and can form tubaeform fixing of wherein outer Pipe Cutting 3 with nut 5,14 li in the central through hole road of inner chamber cylinder 11 is stretched in interior Pipe Cutting 2, outer Pipe Cutting 3 expose port by shutoff, the otch 1 that has vertebral pulp to enter on this end.Pipe Cutting produces with cylinder and comes and goes displacement in can making under the effect of plate machine 12, the inscribe pipe port produces shearing in otch 1 place with outer Pipe Cutting, coming and going the vertebral pulp that enters otch 1 under the shear action, the colloidal state vertebral pulp that downcuts is by the suction pump sucking-off, to constantly inject flushing liquor by joint 6 simultaneously, generally be saline, can realize purpose of design.

For Pipe Cutting 2 in making is fixed in the centre bore of body, the cylinder 11 that can adopt two sections spiral shell mosquitos to connect, after the leading portion cylinder is passed in interior Pipe Cutting, pipe port forms toroidal and is squeezed between two sections cylinders, or adopts circumscribed pipe end fixed form, according to cutting object, can adopt the inside and outside Pipe Cutting (2,3) of elongated thin-wall stainless steel, earlier stretch into cutting part during operation by dilating pipe 4, wherein in the prosopyle end of Pipe Cutting can be under trigger 12 effects can stretch into otch 1 in cylinder 11 displacement processes, and to cross one section slightly.Outer Pipe Cutting upper cut 1 and inscribe pipe port will form sharp sword, form gap ring cavity 16 between two pipes (2,3), when interlacing, port can produce shear action, for trigger 12 is acted on the ring plate washer 9, have the both sides strip shape gob to use the trigger two ends to expose handle on the handle, shell 8 stretches in an end that also has corresponding strip shape gob by plate machine 12 on the wall of big footpath and acts on the ring baffle plate 9.

Claims

1, a kind of manual type lumbar intervertebral disc marrow cutting suction rifle that is used on the human body, shape such as pistol is characterized in that:

(1), body of a gun shell (8) forms reducing inner chamber (17), the cylinder (11) in band central through hole road (14) is equipped with in inner chamber (17) lining, be with spring (7) on the cylinder, the front end of cylinder (11) and shell (8) are for being slidingly matched, the liquid inlet joint (6) that is communicated with inner chamber (17) is housed on this end housing (8), the ring plate washer (9) that is slidingly matched with shell (8) is arranged on cylinder (11) rear end, and this newel post's body 11 stretches out shell (8), have on the external part with other to be equipped with the joint (15) that suction pump is connected;

(2), rifle upper trigger (12) is to be contained on the handle (13), an end of plate machine (12) rides on the ring plate washer (9),

(3), insert inside and outside Pipe Cutting (2,3) by shell (8) front end, central duct (14) lining of cylinder (11) is stretched in wherein interior Pipe Cutting (2), form ring cavity (16) between the inside and outside Pipe Cutting (2,3) and be communicated with inner chamber (17), the port of outer Pipe Cutting (3) is had otch (1) by shutoff on this end.

2, cutting suction rifle according to claim 1 is characterized in that: can adopt two sections cylinders that are threaded (11), pipe end formation horn mouth was squeezed between two sections cylinders after the leading portion cylinder was passed in interior Pipe Cutting (2).

3, cutting according to claim 1 suction rifle is characterized in that: can adopt elongated tube wall inner and outer pipe (2,3), wherein in the front end of Pipe Cutting can be under 12 effects of plate machine can stretch into incision (1) in cylinder (11) displacement process.