CN103393452A

CN103393452A - Type-I bone cement injection device

Info

Publication number: CN103393452A
Application number: CN2013102994252A
Authority: CN
Inventors: 陆强
Original assignee: Suzhou And Science & Technology Development Co Ltd
Current assignee: Suzhou And Science & Technology Development Co Ltd
Priority date: 2013-07-17
Filing date: 2013-07-17
Publication date: 2013-11-20

Abstract

The invention discloses a type-I bone cement injection device applied to percutaneous kyphoplasty. The type-I bone cement injection device comprises a piston sleeve and a piston cylinder matching with the same. The piston cylinder can be inserted and hermetically connected into the piston sleeve. The piston cylinder can move relative to the piston sleeve. A push handle is disposed at the tail end of the piston cylinder. A grip is disposed at the tail end of the piston sleeve. A Luer taper is disposed on the grip. A connector of the Luer taper is communicated with an inner passage of the piston sleeve. The front end of the piston sleeve is closed. One side of the piston sleeve, close to the front end, is provided with an injection outlet which is communicated with the inner passage of the piston sleeve. The type-I bone cement injection device allows bone cement to be injected in the retraction and reduction direction, while the unharmed side of diseased vertebra bears no injection force, thus fracture level of the diseased vertebra is not increased and the surgical effect is good.

Description

I type bone cement infusing device

Technical field

The present invention relates to the orthopedic medical device field, refer more particularly to the I type bone cement infusing device that uses in vertebral body balloon expandable plasty.

Background technology

Vertebral body balloon expandable plasty is a minimally invasive spine surgical operation, be mainly used in the treatment of compression fracture of vertabral body, compression fracture of vertabral body is the modal complication of sufferers of osteoporosis face, can cause local pain, moving obstacle, and serious also can cause lower extremity paralysis.At first vertebral body balloon expandable plasty expands to recover the height of disease damage vertebral body by sacculus, and the implants such as the interior injection of backward pathological changes vertebral body bone cement are filled, thereby strengthen the strength and stability of pathological changes vertebral body, the vertebral body after making to restore is compressed distortion more not.

I type bone cement infusing device is one of apparatus that the treatment compression fracture of vertabral body is commonly used, be mainly used in bone cement is injected to disease damage vertebral body inside, on market, the structure of existing I type bone cement infusing device is: comprise piston bush and piston boit with matching, piston boit can insert and be sealedly connected in piston bush, and piston boit and piston bush can relatively move, at the piston boit tail end, be provided with and push away handle, at the piston bush tail end, be provided with lever, on lever, be provided with the hole that communicates with passage in piston bush, the front end of piston bush is provided with the injection outlet, the injection outlet communicates with the passage in piston bush.

the I type bone cement infusing device of said structure need be used in conjunction with in conjunction with foley's tube, in operation, foley's tube is stretched in the pathological changes vertebral body by the service aisle of setting up in advance, by the expansion of sacculus, prop up the vertebral body of subsiding until the pathological changes vertebral body returns to the original form, then remove sacculus, the piston bush of I type bone cement infusing device is stretched in foley's tube, and inject the bone cement that modulates in piston bush, piston boit inserts in piston bush and promotes bone cement, bone cement is filled in the cavity of vertebral body, fill complete, I type bone cement infusing device is exited to foley's tube, finally foley's tube is shifted out external.

The major defect that the I type bone cement infusing device of said structure form exists is: inevitably can there be nondirectional factor in bone cement while filling, when the pathological changes vertebral body is one-sided subsiding; the side that the pathological changes vertebral body is intact more or less can be subject to certain pressure; cause the side direction outside projection that the pathological changes vertebral body is intact; increase the weight of so most probably the fracture degree of pathological changes vertebral body; not only do not reach the surgical effect of expection, may increase the weight of on the contrary the pain of sufferer.

Summary of the invention

The technical problem of solution required for the present invention is: a kind of I type bone cement infusing device that bone cement is filled to predefined distraction reduction direction is provided.

for addressing the above problem, the technical solution used in the present invention is: described I type bone cement infusing device, comprise piston bush and piston boit with matching, piston boit can insert and be sealedly connected in piston bush, and piston boit and piston bush can relatively move, at the piston boit tail end, be provided with and push away handle, at the piston bush tail end, be provided with lever, it is characterized in that: on lever, be provided with female Luer, the interface of female Luer communicates with the passage in piston bush, the front end sealing of piston bush is obstructed, and the side at piston bush offers the injection outlet near front end, the injection outlet communicates with the passage in piston bush.

The invention has the beneficial effects as follows: the I type bone cement infusing device that uses said structure, during operation, the injection of piston bush outlet is filled towards predefined distraction reduction direction, in the bone cement injection process; the side group that the pathological changes vertebral body is intact originally can not be subject to injection force; thus can not increase the weight of the fracture degree of pathological changes vertebral body, the directed filling of bone cement makes the bone cement filling more even, and surgical effect is better.

The accompanying drawing explanation

Fig. 1 is the structural representation of I type bone cement infusing device of the present invention.

Fig. 2 is the plan structure schematic diagram in Fig. 1.

Fig. 3 is the partial enlarged drawing of A part in Fig. 2.

Fig. 4 is the working state schematic representation that I type bone cement infusing device of the present invention is filled to predetermined direction.

The specific embodiment

Below in conjunction with accompanying drawing and preferred embodiment, technical solutions according to the invention are described in further detail.

as Fig. 1, Fig. 2, the described I type of Fig. 3 bone cement infusing device, comprise piston bush 1 and piston boit with matching 2, piston boit 2 can insert and be sealedly connected in piston bush 1, and piston boit 2 and piston bush 1 can relatively move, at piston boit 2 tail ends, be provided with and push away handle 21, at piston bush 1 tail end, be provided with lever 11, on lever 11, be provided with female Luer 12, the interface of female Luer 12 communicates with the passage in piston bush 1, the front end sealing of piston bush 1 is obstructed, and the side at piston bush 1 offers injection outlet 13 near front end, injection outlet 13 communicates with the passage in piston bush 1.

I type bone cement infusing device of the present invention need to be used in conjunction with directed foley's tube 4 and jacketed syringe, and directed foley's tube 4 and jacketed syringe all can directly be purchased and arrive on market.as shown in Figure 4, when operation, open X ray, directed foley's tube 4 is stretched in the pathological changes vertebral body by the service aisle of setting up in advance, the opening part of directed foley's tube 4 is towards the direction of subsiding of pathological changes vertebral body, by the expansion of sacculus, prop up the vertebral body of subsiding until the pathological changes vertebral body returns to the original form, then remove sacculus, the piston bush 1 of I type bone cement infusing device is stretched in directed foley's tube 4, injection outlet 13 directions of subsiding towards the pathological changes vertebral body of piston bush 1, then use the bone cement that jacketed syringe will modulate to be injected in the passage in piston bush 1 by female Luer 12, again piston boit 2 inserted in the passage of piston bush 1 and promote bone cement, bone cement is filled in the cavity 3 of vertebral body, when injecting bone cement, piston bush 1 piston bush 1 is slowly shifted out can rotate in a circumferential direction, until bone cement is filled full whole cavity, then by piston bush 1 from directed foley's tube 4, shifting out, finally shift out directed foley's tube 4 external.Use the I type bone cement infusing device of said structure, in the bone cement injection process, the side group that the pathological changes vertebral body is intact originally can not be subject to injection force, thereby can not increase the weight of the fracture degree of pathological changes vertebral body, the directed filling of bone cement makes the bone cement filling more even, and surgical effect is better.

Claims

1. I type bone cement infusing device, comprise piston bush and piston boit with matching, piston boit can insert and be sealedly connected in piston bush, and piston boit and piston bush can relatively move, at the piston boit tail end, be provided with and push away handle, at the piston bush tail end, be provided with lever, it is characterized in that: on lever, be provided with female Luer, the interface of female Luer communicates with the passage in piston bush, the front end sealing of piston bush is obstructed, and in a side of piston bush, near the position of front end, offer the injection outlet, the injection outlet communicates with the passage in piston bush.