Implantable intrathecal drug infusion pump

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...

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

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