CN211460429U

CN211460429U - A postoperative perfusion device for intraductal dosing of vertebra

Info

Publication number: CN211460429U
Application number: CN201922022659.8U
Authority: CN
Inventors: 宋振宇; 曹依群; 陈鑫
Original assignee: Fudan University Shanghai Cancer Center
Current assignee: Fudan University Shanghai Cancer Center
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-09-11
Anticipated expiration: 2029-11-21

Abstract

The utility model relates to the technical field of machinery. A postoperative perfusion device for intraspinal administration comprises a liquid storage bag arranged under the posterior epidermis of the back, an administration tube implanted in a lesion region and a drainage tube for butt joint and communication of the liquid storage bag and the administration tube, wherein a spiral piece is spirally wound and fixed on the side wall of the administration tube, and at least ten side holes are formed in the side wall of a region, which is not connected with the spiral piece, of the administration tube; the drug administration tube is arranged in a gap enclosed by the spinal cord and the dura mater, the top of the drug administration tube is provided with a hanging ring, and the hanging ring is provided with a through hole for the operation line to pass through and be fixed on the inner side of the dura mater; a hollow lateral wing ring is fixed on the drainage tube, and a mounting hole for fixing the drainage tube on the outer side of the dura mater is formed in the lateral wing ring. Compared with the prior art, the whole device is positioned in the sterile environment in the human body, and the problems that the lumbar cisterna magna drainage tube is positioned outside the body of a patient, the risk of retrograde infection exists, and nursing is inconvenient are avoided.

Description

A postoperative perfusion device for intraductal dosing of vertebra

Technical Field

The utility model relates to the technical field of machinery, concretely relates to medicine perfusion device.

Background

Intraspinal tumors are classified into 3 types, i.e., intramedullary tumors, extramedullary subdural tumors, and extradural tumors, according to the relationship between the tumors and the spinal cord and dura mater. Surgical resection is currently the most effective means of treating intraspinal tumors.

After the current intraspinal tumor resection operation, the following administration devices are needed for the postoperative administration treatment.

One) intrathecal administration for lumbar puncture.

Intrathecal administration is also an option for intraspinal tumor postoperative chemotherapy because the intramedullary tumors and extramedullary subdural tumors close the spinal canal membrane to form a closed lacuna. Compared with the conventional chemotherapy, the intrathecal administration has high drug concentration and good effect in cerebrospinal fluid because the drug directly enters the subarachnoid cavity without passing through the blood brain barrier, and simultaneously avoids the adverse reaction caused by large dose of intravenous administration. The defect is that a certain curative effect can be achieved by repeatedly injecting medicine into the lumbar puncture sheath, the operation is complex, great pain is brought to a patient, and meanwhile, repeated puncture easily causes the possibility of secondary infection.

Second) lumbar cisterna drainage tube.

For the lumbar cisterna magna drainage tube which is clinically applied, namely the lumbar spinal tube built-in tube, the cerebrospinal fluid is continuously drained, although the pain of the patient caused by repeated lumbar puncture is avoided, the lumbar cisterna magna drainage tube still has great limitation. The lumbar cisterna magna drainage tube which is universal at present is reserved beside a bed, has smaller diameter, is easy to block after being reserved, and has the risk of retrograde infection. Because the drainage bag is external, in order to reduce the infection risk, medical personnel need to observe the puncture position condition every day, change the dressing in time, increased work load. Patients and medical staff need to pay attention to the clamping condition of the drainage tube all the time. If the drainage tube is not clamped, a large amount of cerebrospinal fluid flows out, and life danger can occur.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides a postoperative perfusion device for intraspinal administration has solved the problem of above at least one.

The technical scheme of the utility model is that: a postoperative perfusion device for intraspinal administration comprises a liquid storage bag arranged under the posterior epidermis of the back, an administration tube implanted in a lesion region and a drainage tube for butt-joint communication of the liquid storage bag and the administration tube, and is characterized in that a spiral piece is spirally wound and fixed on the side wall of the administration tube, and at least ten side holes are formed in the side wall of a region which is not connected with the spiral piece on the administration tube;

the drug administration tube is arranged in a gap enclosed by the spinal cord and the dura mater, the top of the drug administration tube is provided with a hanging ring, and the hanging ring is provided with a through hole for a surgical thread to pass through and be fixed on the inner side of the dura mater;

the drainage tube is fixed with a hollow side wing ring, the side wing ring is provided with a mounting hole for fixing the side wing ring outside the dura mater, a water absorbing piece is placed in the inner cavity of the side wing ring, and the water absorbing piece is abutted to the outer wall of the drainage tube.

Compared with the prior art, the whole device is positioned in the sterile environment in the human body, and the problems that the lumbar cisterna magna drainage tube is positioned outside the body of a patient, the risk of retrograde infection exists, and nursing is inconvenient are avoided. Compared with repeated lumbar puncture intrathecal administration, medical staff only need to use a disposable sterile syringe to inject chemotherapy drugs into a subcutaneous liquid storage bag and lightly extrude the drugs into the vertebral canal, thereby greatly relieving the pain of patients and not needing to endure the pain of the lumbar puncture needle penetrating into the vertebral canal every time.

The side hole on the administration tube is convenient for the drug to seep out, and prevents the one-way outlet of the drainage tube from being blocked. The hanging ring at the top of the administration tube is sewed in the dura mater by penetrating a through hole on the hanging ring with an operation line before closing the dura mater after operation, thereby playing a role of hanging and fixing the administration tube.

The spiral piece plays an isolation role, and the problem that the side hole is completely blocked because tissues such as the terminal filament and the like surround the administration tube to grow is avoided.

The lateral wing ring is positioned outside the dura mater, surrounds the drainage tube, absorbs liquid flowing into the vertebral canal from the subcutaneous part around the drainage tube and plays a role in absorbing water. The side wing ring is provided with a mounting hole, so that a doctor can conveniently sew the hard spinal membrane after closing the hard spinal membrane, and the function of fixing the whole device is achieved.

Further preferably, the spiral member is a hollow spiral tube;

the spiral tube is provided with a communicating port which is in butt joint and communication with the inner cavity of the administration tube, and the spiral tube is communicated with the inner cavity of the administration tube through the communicating port;

and a side hole is formed in the outer side of the spiral pipe.

The liquid can be conveniently discharged and discharged through the side hole on the outer side of the spiral pipe.

Further preferably, the spiral part takes two turns of spiral sections as a spiral unit;

the intercommunication mouth has all been seted up at the both ends of same spiral unit.

The flow guide is convenient.

Further preferably, platinum layers are fixed at the upper end and the lower end of the administration tube.

The platinum layer is added, so that the situation that the position, whether the administration tube is bent and the like can be observed through X-rays after operation is facilitated. And platinum can not cause interference to nuclear magnetic resonance, so that the nuclear magnetic resonance detection of a patient is facilitated.

Further preferably, the reservoir comprises a sac body, and the sac body is provided with a connector for connecting the drainage tube;

a separation membrane made of silica gel is fixed on the inner wall of the bag body, and a through hole is formed in the separation membrane;

the separating membrane divides the bag body into a liquid inlet cavity and a liquid outlet cavity, and the liquid outlet cavity is in butt joint conduction with the joint.

Through the arrangement of the separation membrane, after the needle is inserted into the capsule body, obvious resistance can be generated when the needle contacts the separation membrane, and the problem that an operator inserts the needle into a connector or a drainage tube through the liquid storage bag is avoided.

Further preferably, the wing ring comprises an annular body formed by detachably connecting a first half ring body and a second half ring body; hollow pipes are fixed on the first semi-ring body and the second semi-ring body, and the inner walls of the hollow pipes are used as mounting holes;

the water absorbing piece comprises a first water absorbing cotton layer, a second water absorbing cotton layer and a third water absorbing cotton layer which are axially arranged;

the first absorbent cotton layer, the second absorbent cotton layer and the third absorbent cotton layer are divided by plastic clapboards;

disinfectant is soaked in the second water absorption cotton layer.

The lateral wing ring absorbs liquid, and the liquid outside the vertebral canal is prevented from flowing into the vertebral canal to cause.

Further preferably, the drainage tube is further provided with a flow rate control device for controlling the tube diameter of the drainage tube.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the present invention in an installation state;

FIG. 3 is a schematic view of the ring body of the wing ring of the present invention;

FIG. 4 is a schematic view of a second half-ring of the present invention;

fig. 5 is a schematic structural view of the reservoir of the present invention.

In the figure: 1 is the reservoir, 2 is for dosing the pipe, 3 is the drainage tube, 4 is the spiral part, 5 is rings, 6 is the flank ring, 7 is the side opening, 8 is the platinum layer, 9 is the spinal cord, 10 is the dura mater, 11 is the divider membrane, 12 is the joint, 13 is flow rate control device, 61 is first hemicyclic body, 62 is the second hemicyclic body, 63 is the mounting hole, 64 is first cotton layer that absorbs water, 65 is the second cotton layer that absorbs water, 66 is the third cotton layer that absorbs water.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 5, a postoperative perfusion device for intraspinal administration comprises a reservoir 1 arranged under the dorsal surface of the back, an administration tube 2 for implanting in the lesion area, and a drainage tube 3 for butt-jointing and communicating the reservoir 1 and the administration tube 2, wherein a spiral piece 4 is spirally wound and fixed on the side wall of the administration tube 2, and at least ten side holes 7 are arranged on the side wall of the administration tube 2 in the area not connected with the spiral piece 4; the administration tube 2 is arranged in a gap enclosed by the spinal cord 9 and the dura mater 10, the top of the administration tube 2 is provided with a hanging ring 5, and the hanging ring 5 is provided with a through hole for an operation line to pass through and be fixed on the inner side of the dura mater 10; a hollow side wing ring 6 is fixed on the drainage tube 3, a mounting hole 63 for fixing the side wing ring 6 outside the dura mater 10 is arranged on the side wing ring, a water absorbing piece is placed in the inner cavity of the side wing ring, and the water absorbing piece is propped against the outer wall of the drainage tube.

Compared with the prior art, the whole device is positioned in the human body in an aseptic environment, and the problems of retrograde infection risk and inconvenience in nursing caused by the fact that the lumbar cisterna drainage tube 3 is positioned outside the body of a patient are avoided. Compared with repeated lumbar puncture intrathecal administration, medical staff only need to use a disposable sterile syringe to inject chemotherapy drugs into the subcutaneous liquid storage bag 1 and lightly extrude the drugs into the vertebral canal, thereby greatly relieving the pain of patients and not needing to bear the pain of the lumbar puncture needle penetrating into the vertebral canal every time.

This patent has moved the structure of the reservoir 1 of traditional ventricles of the brain dosing to the intraspinal canal and has dosed, so the structure of reservoir 1 is similar to current Ommaya reservoir 1, so this patent does not detail. Ommaya reservoir 1 can withstand 130 repeated punctures with 25G or finer needles. Withstand 800 repeated punctures with 22G needles.

The side hole 7 on the administration tube 2 is convenient for the medicine to seep out and prevents the one-way outlet of the drainage tube 3 from being blocked. The hanging ring 5 on the top of the administration tube 2 is sewed in the dura mater by passing an operation line through the through hole on the hanging ring 5 before closing the dura mater after operation, thereby playing a role of hanging and fixing the administration tube 2.

The spiral piece 4 plays an isolation role, and the problem that the side hole 7 is completely blocked because tissues such as the terminal filament and the like surround the administration tube 2 to grow is avoided.

The lateral wing ring 6 is positioned outside the dura mater 10, surrounds the drainage tube 3, and absorbs liquid flowing from the subcutaneous space to the vertebral canal around the drainage tube 3 for the purpose of water absorption. The wing ring 6 is provided with a mounting hole, which is convenient for doctors to sew on the dura mater after closing the dura mater, and plays a role in fixing the whole device.

The spiral element 4 is a hollow spiral pipe; the spiral pipe is provided with a communicating port which is communicated with the inner cavity of the administration tube 2 in a butt joint way, and the spiral pipe is communicated with the inner cavity of the administration tube 2 through the communicating port; the outside of the spiral pipe is provided with a side hole. The liquid can be conveniently discharged and discharged through the side hole on the outer side of the spiral pipe. The spiral piece 4 takes two circles of spiral sections as a spiral unit; the intercommunication mouth has all been seted up at the both ends of same spiral unit. The flow guide is convenient. That is, one end of the spiral piece 4 is communicated with the administration tube 2 every two turns, and the other end is communicated with the administration tube 2. The inner diameter of the communication port is 3mm-4 mm.

Platinum layers 8 are fixed at the upper end and the lower end of the administration tube 2. The platinum layer 8 is added, so that the situation that the position, whether the administration tube 2 is bent or not and the like can be observed conveniently through X-rays after operation. And platinum can not cause interference to nuclear magnetic resonance, so that the nuclear magnetic resonance detection of a patient is facilitated.

The liquid storage bag 1 comprises a bag body, and the bag body is provided with a connector 12 for connecting the drainage tube 3; a separation membrane 11 made of silica gel is fixed on the inner wall of the bag body, and a through hole is formed in the separation membrane 11; the separating membrane 11 divides the bag body into a liquid inlet cavity and a liquid outlet cavity, and the liquid outlet cavity is in butt joint conduction with the joint. Through the arrangement of the separation film, after the needle is inserted into the capsule body, obvious resistance is generated when the needle contacts the separation film, and the problem that an operator inserts the needle into the connector or the drainage tube 3 through the liquid storage bag 1 is avoided. The aperture of the through hole is about 0.1mm-0.3 mm. The aperture of the side hole on the administration tube is about 1 mm. The hole diameter of the side hole on the screw is about 1 mm.

The wing ring 6 includes an annular body formed by detachably connecting a first half body 61 and a second half body 62. The first half ring body and the second half ring body are made of flexible polyethylene. The first half ring body and the second half ring body are both fixed with hollow pipes, and the inner walls of the hollow pipes are used as mounting holes. The first half ring body and the second half ring body are detachably connected with the clamping groove through mutually matched buckles. The absorbent member may be a layer of absorbent cotton filled in the cavity of the annular body. Alternatively, the absorbent member comprises a first absorbent cotton layer 64, a second absorbent cotton layer 65 and a third absorbent cotton layer 66 which are axially arranged. The first absorbent cotton layer 64, the second absorbent cotton layer 65 and the third absorbent cotton layer 66 are separated by plastic clapboards. The second absorbent cotton layer 65 is impregnated with a disinfectant. The water absorption piece absorbs liquid, so that the liquid outside the vertebral canal is prevented from flowing into the vertebral canal to cause infection, and the lateral wing ring is soft in texture and cannot press the dura mater to cause tissue ischemia necrosis.

A flow rate control device 13 for controlling the diameter of the draft tube is also mounted on the draft tube. The flow rate control device comprises a shell and a roller for extruding the drainage tube, the drainage tube penetrates through the shell, a guide rail for guiding the roller to move is arranged on the inner side of the shell, and the guide direction of the guide rail is an acute angle relative to the included angle of the central axis of the drainage tube. Be convenient for when the gyro wheel moves along the guide rail, extrude the drainage tube, the control velocity of flow. The flow rate control device may be a cable tie. The pipe diameter of the drainage pipe is adjusted through the binding belt, and then the flow speed is controlled.

The outer surfaces of the administration tube and the spiral piece are coated with anti-adhesion coatings. The anti-adhesion coating is a drug coating. For example, the anti-blocking coating can be a paclitaxel coating.

The device is placed when a patient performs operations on intramedullary tumors and extramedullary subdural tumors. The administration tube is placed in the space between the dura mater and the spinal cord before the dura mater is closed during surgery.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A postoperative perfusion device for intraspinal administration comprises a liquid storage bag arranged under the posterior epidermis of the back, an administration tube implanted in a lesion region and a drainage tube for butt-joint communication of the liquid storage bag and the administration tube, and is characterized in that a spiral piece is spirally wound and fixed on the side wall of the administration tube, and at least ten side holes are formed in the side wall of a region which is not connected with the spiral piece on the administration tube;

the drug administration tube is arranged in a gap defined by the spinal cord and the dura mater, the top of the drug administration tube is provided with a hanging ring, and the hanging ring is provided with a through hole for a surgical thread to pass through and be fixed on the inner side of the dura mater;

2. A post-operative infusion device for intravertebral administration according to claim 1, wherein: the spiral piece is a hollow spiral pipe;

and a side hole is formed in the outer side of the spiral pipe.

3. A post-operative infusion device for intravertebral administration according to claim 1, wherein: platinum layers are fixed at the upper end and the lower end of the administration tube.

4. A post-operative infusion device for intravertebral administration according to claim 1, wherein: the liquid storage bag comprises a bag body, and the bag body is provided with a connector for connecting the drainage tube;

5. A post-operative infusion device for intravertebral administration according to claim 1, wherein: the lateral wing ring comprises an annular body formed by detachably connecting a first half ring body and a second half ring body; hollow pipes are fixed on the first semi-ring body and the second semi-ring body, and the inner walls of the hollow pipes are used as mounting holes;

disinfectant is soaked in the second water absorption cotton layer.

6. A post-operative infusion device for intravertebral administration according to claim 1, wherein: and the drainage tube is provided with a flow speed control device for controlling the tube diameter of the drainage tube.