A kind of Kraft electrode with pull flower structure and its manufacturing method
A drawing structure and electrode technology, applied in the fields of biomedical engineering and micro-nano processing, can solve the problems of nutrient solution blockage, large nerve compression, and prone to swelling of nerve tissue, so as to achieve the effect of guaranteeing the effect and reducing damage and compression
Active Publication Date: 2017-05-24
PEKING UNIV
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Problems solved by technology
[0003] Existing Kraft electrodes will need to completely wrap the stimulated part of the nerve area. This way of completely wrapping the nerve tissue will cause the nutrient solution in the wrapped area to be blocked
At the same time, after the electrode is implanted, the nerve tissue is prone to swelling, and because the diameter of the Kraft electrode is fixed after the implantation is completed, the nerve tissue will be compressed
[0004] Existing kraft electrodes include Medtronic's U.S. patent application, patent No. US5344438, a U-shaped kraft electrode that only wraps part of the nerve. This electrode can relieve nerve compression, but it cannot stimulate and record the entire nerve. easily disturbed by the outside world
[0005] Peking University's patent application, patent number 201410024820, an implantable kraft nerve electrode and its manufacturing method. According to the structure of the tie, a tie-type kraft electrode with adjustable diameter is proposed, which can be passed through the ratchet of the tie. Designed to precisely control the diameter of the Kraft, but the diameter of this electrode is not adjustable after implantation, which may also cause nerve compression
[0006] To sum up, the existing Kraft electrodes have problems such as non-adjustable diameter after implantation, easy tissue swelling, large nerve compression, and blockage of nutrient solution.
Method used
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[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are only used to illustrate the present invention, but can not be used to limit the scope of the present invention.
[0024] Such as figure 1 As shown, the kraft electrode with a garland structure of the present invention includes a long strip (1), a stretchable garland structure (2), a lead wire (3), an electrode point (4), a ratchet (5), a lock ring (7), locking ring opening (6) and lead junction (8). The patterned structure (2) is arranged in the middle of the strip (1) and connected to the strip (1); the lead wire (3) and the electrode point (4) are on the same side of the patterned structure (2).
[0025] The strip (1) and the patterned structure (2) are made of the same material, which is a polymer film with biocompatibility, which may be parylene with biocompatibility. The l...
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The invention provides a cuff electrode having a garland structure. The cuff electrode having the garland structure comprises a stripped belt (1), an extensible garland structure (2), a lead (3), an electrode point (4), a ratchet (5), a lock ring (7), a lock ring opening (6) and a lead node (8). According to the garland structure, after the cuff electrode is planted, the stripped belt is extended along swelling of nerves, tissues are not pressed, neurhumor is not blocked due to the hollow garland structure, meanwhile the electrode point and the nerves are in close contact, and the exciting effect and the signal recording accuracy are guaranteed.
Description
technical field [0001] The invention relates to the technical field of micro-nano processing and the field of biomedical engineering, in particular to a kraft electrode with a patterned structure and a manufacturing method thereof. Background technique [0002] As an implantable nerve electrode, Kraft electrode can be used to record nerve signals and stimulate nerve tissue. Through the stimulation of the nerve tissue, the control of the corresponding muscle movement can be realized, so as to restore some dysfunctions of the spinal cord injury patients. [0003] Existing Kraft electrodes will need to completely wrap the stimulated part of the nerve area, and this way of completely wrapping the nerve tissue will cause the nutrient solution in the wrapped area to be blocked. At the same time, after the electrode is implanted, the nerve tissue is prone to swelling, and since the diameter of the Kraft electrode is fixed after the implantation is completed, the nerve tissue will ...
Claims
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IPC IPC(8): A61N1/05A61B5/04
Inventor喻晓雪余怀强李志宏
OwnerPEKING UNIV