Implantable intrathecal drug infusion pump

An infusion pump and implantable technology, applied in the field of intrathecal drug infusion pumps, can solve the problems of unfavorable cleanliness, easy to cause infection, liver and kidney function damage, etc., and achieve the effect of saving social resources and reducing the burden on patients

Pending Publication Date: 2021-08-31
CHANGZHOU RUISHENAN MEDICAL DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Patients take long-term oral or intravenous injection of analgesics, spasm-relief drugs, and central chemotherapy drugs, etc., and need to increase the dose. After the peripheral concentration rises, they can reach the target through the blood-brain barrier, but at the same time, the peripheral high concentration Drugs can also bring serious side effects: addiction, constipation, nausea and vomiting, coma, drowsiness, liver and kidney damage, etc.; intrathecal administration injects the drug directly into the subdural, reaches the cerebrospinal fluid and the central nervous system, and avoids the blood-brain barrier. Smaller and can avoid many side effects; there are also devices for intrathecal drug delivery on the market, but they are all semi-implantable, with a drug box outside the body and connected by a puncture device in the middle. Because there is a puncture port on the body surface, patients cannot leave for a long time The department cannot be used for a long time, it is not conducive to personal hygiene, it is easy to cause infection, and even the infection will enter the central nervous system, causing serious consequences, and MRI cannot be performed, which is not conducive to the diagnosis and treatment of tumors

Method used

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  • Implantable intrathecal drug infusion pump
  • Implantable intrathecal drug infusion pump
  • Implantable intrathecal drug infusion pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] When in use, before implanting the intrathecal drug infusion pump into the body, inject the drug solution into the drug injection port with a syringe. Liquid filling and first aid mouth pumping, after drug injection, if Figure 1-10 As shown, the battery 9 supplies power to the motor 11, the motor 11 runs, the motor 11 drives the drive gear 12, the drive gear 12 drives the gear 22 on the upper end of the peristaltic pump 4 to rotate, the gear 22 drives the turntable 19 to rotate, and the turntable 19 drives the gears meshing around the turntable 19. The roller frame 20 rotates, and the roller frame 20 rotates to make the roller shaft 21 fixedly connected on the roller frame 20 rotate, and the medicinal liquid in the pump tube 14 that is stuck on the lower end of the roller shaft 21 is slowly extruded, as Figure 9 , 10 , which is the liquid medicine extrusion state, while the peristaltic pump 4 is working, the high-pressure gas in the high-pressure gas chamber 16 of th...

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PUM

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Abstract

The invention relates to the technical field of infusion devices, in particular to an implantable intrathecal medicine infusion pump. The implantable intrathecal medicine infusion pump comprises an upper shell, a middle shell assembly and a lower shell, wherein the middle shell assembly comprises a medicine injection opening formed in the center of the shell; a peristaltic pump, a motor driving mechanism, a circuit board and a battery are sequentially arranged in the shell and around the medicine injection opening; the motor driving mechanism comprises a motor and a driving gear connected with the motor; the driving gear is meshed with the peristaltic pump; a catheter assembly is connected to the peristaltic pump in a surrounding mode; and a medicine storage cavity is formed in the shell at the lower end of the medicine injection opening. The implantable intrathecal medicine infusion pump can be used for intrathecal infusion of morphine, baclofen and other medicines, is used for long-term treatment of intractable chronic pain and intractable central spasm, and is beneficial to relieving the burden of a patient and saving social resources.

Description

technical field [0001] The invention relates to a drug infusion pump, in particular to an implantable intrathecal drug infusion pump. Background technique [0002] Patients take long-term oral or intravenous injection of analgesics, spasm-relief drugs, and central chemotherapy drugs, etc., and need to increase the dose. After the peripheral concentration rises, they can reach the target through the blood-brain barrier, but at the same time, the peripheral high concentration Drugs can also bring serious side effects: addiction, constipation, nausea and vomiting, coma, drowsiness, liver and kidney damage, etc.; intrathecal administration injects the drug directly into the subdural, reaches the cerebrospinal fluid and the central nervous system, and avoids the blood-brain barrier. Smaller and can avoid many side effects; there are also devices for intrathecal drug delivery on the market, but they are all semi-implantable, with a drug box outside the body and connected by a punc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/145A61M5/142
CPCA61M5/14244A61M5/145
Inventor 谢思源蒋军庭张兴国杜玉惠
Owner CHANGZHOU RUISHENAN MEDICAL DEVICES
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