Abstract: A pacemaker is provided. The pacemaker includes an electrode line having a lead and an electrode. The electrode includes a carbon nanotube composite structure having a matrix and at least one carbon nanotube structure located in the matrix. A first end of each carbon nanotube structure protrudes out of a first surface of the matrix for stimulating the human tissue, and a second end of each carbon nanotube structure protrudes out of a second surface of the matrix to electrically connect to the lead.

Abstract: A method for making a culture medium for culturing neural cells is provided. An original carbon nanotube structure is provided. The original carbon nanotube structure includes a drawn carbon nanotube film including a number of carbon nanotubes joined end to end by van der Waals force. The carbon nanotubes are substantially oriented along the same direction. A carbon nanotube structure including a number of carbon nanotube wires spaced from each other is formed by treating the original carbon nanotube structure. The carbon nanotube structure is fixed on a substrate.

Abstract: A method for making a nerve graft includes the following steps. A culture layer including a lyophobic substrate, a carbon nanotube film structure, and a protein layer is provided. The carbon nanotube film structure is sandwiched between the lyophobic substrate and the protein layer. A number of nerve cells are seeded on a surface of the protein layer away from the lyophobic substrate. The nerve cells are cultured until a number of neurites branch from the nerve cells and are connected between the nerve cells.

Abstract: A method for making a culture medium for culturing neural cells is provided. An original carbon nanotube structure is provided. The original carbon nanotube structure includes a drawn carbon nanotube film including a number of carbon nanotubes joined end to end by van der Waals force. The carbon nanotubes are substantially oriented along the same direction. A carbon nanotube structure including a number of carbon nanotube wires spaced from each other is formed by treating the original carbon nanotube structure. The carbon nanotube structure is fixed on a substrate.

Abstract: An electrode lead of a pacemaker includes a metal conductive core and a carbon nanotube film. The metal conductive core defines an extending direction. The carbon nanotube film wraps around the metal conductive core. The carbon nanotube film includes a plurality of carbon nanotubes extending substantially along the extending direction of the metal conductive core. A bared part is defined at one end of the electrode lead. A pacemaker using the above mentioned electrode lead is also disclosed.

Abstract: A neural graft includes a biological substrate, a carbon nanotube structure and a neural network. The carbon nanotube structure is located on the biological substrate. The carbon nanotube structure includes a number of carbon nanotube wires crossed with each other to define a number of pores. The neural network includes a number of neural cell bodies and a number of neurites branched from the neural cell bodies. An effective diameter of each pore is larger than or equal to a diameter of the neural cell body, the neurites substantially extend along the carbon nanotube wires such that the neurites are patterned.

Abstract: A pacemaker is provided. The pacemaker includes a pulse generator and an electrode line connecting with the pulse generator. The electrode line includes at least one conductor. The at least one conductor includes at least one carbon nanotube wire having a plurality of radioactive particles therein.

Abstract: A nerve graft includes a carbon nanotube structure, a hydrophilic layer, and a nerve network. The hydrophilic layer having a polar surface is located on a surface of the carbon nanotube structure. The nerve network positioned on the polar surface of the hydrophilic layer includes a number of neurons connecting with each other. The nerve network has a polarity. The polar surface of the hydrophilic layer has a polarity attracted to the polarity of the nerve network.

Abstract: A culture medium for growing at least one kind of cells is provided. The culture medium includes a carbon nanotube structure and a cell adhesion layer. The cell adhesion layer covers one surface of the carbon nanotube structure. The at least one kind of cells grows on the cell adhesion layer. In addition, a method for manufacturing a culture medium for growing at least one kind of cells is also provided.

Abstract: A method for making a nerve graft includes the following steps. A culture layer including a carbon nanotube film structure and a protein layer is provided. The protein layer is located on a surface of the carbon nanotube film structure. A number of nerve cells are seeded on a surface of the protein layer away from the carbon nanotube film structure. The nerve cells are cultured until a number of neurites branch from the nerve cells and are connected between the nerve cells.

Abstract: A nerve graft includes a carbon nanotube film structure, a protein layer, and a nerve network. The protein layer is located on a surface of the carbon nanotube film structure. The nerve network is positioned on a surface of the protein layer and far away from the carbon nanotube film structure.

Abstract: A pacemaker includes an electrode line having a lead and an electrode. The electrode includes a carbon nanotube composite structure having a matrix and a carbon nanotube structure located in the matrix. The matrix comprises a first surface and a second surface substantially perpendicular to the first surface. The carbon nanotube structure includes a first end electrically connect to the lead. The carbon nanotube structure is substantially parallel to the second surface of the matrix. A distance between the carbon nanotube structure and the second surface of the matrix is less than 10 micrometers.

Abstract: A generator includes a heat-electricity transforming device and a heat collector. The heat-electricity transforming device is configured to transform heat into electricity. The heat collector includes at least one heat absorption module. The at least one heat absorption module includes a carbon nanotube structure. The at least one heat absorption module is connected to the heat-electricity transforming device and transfers heat to the heat-electricity transforming device.

Abstract: A pacemaker is provided. The pacemaker includes a pulse generator and an electrode line connecting with the pulse generator. The electrode line includes a conductor, an insulation layer and a shielding layer. The insulation layer is located on an outer surface of the conductor. The shielding layer is located on an outer surface of the first insulation layer. The shielding layer is a carbon nanotube structure having a plurality of radioactive particles therein.

Abstract: A culture medium includes a carbon nanotube structure and a hydrophilic layer. The culture medium is capable of culturing at least one neuron. The hydrophilic layer has a polar surface and is located on a surface of the carbon nanotube structure. The polar surface is located on a surface of the hydrophilic layer away from the carbon nanotube structure, and has a polarity attracted to a polarity of the at least one neuron.

Abstract: A nerve graft includes a lyophobic substrate, a carbon nanotube film structure, a protein layer, and a nerve network. The carbon nanotube film structure is located on a surface of the lyophobic substrate. The protein layer is located on a surface of the carbon nanotube film structure away from the lyophobic substrate. The nerve network is positioned on a surface of the protein layer away from the lyophobic substrate.

Abstract: An electrode lead of a pacemaker includes at least one lead wire. The at least one lead wire includes at least one conductive core, a first insulating layer coated on an outer surface of the at least one conductive core, at least one carbon nanotube yarn spirally wound on an outer surface of the first insulating layer, and a second insulating layer coated on the surface of the at least one carbon nanotube yarn. One end of the at least one conductive core protrudes from the first insulating layer to form a naked portion. The at least one carbon nanotube yarn includes a number of carbon nanotubes joined end to end by van der Waals attractive forces. A pacemaker includes a pulse generator and the electrode lead electrically connected with the pulse generator.

Abstract: A method for culturing a number of cells includes the following steps. A culture medium is provided. The culture medium has a carbon nanotube structure and a hydrophilic layer. The hydrophilic layer is formed on a surface of the carbon nanotube structure. A polar layer is formed on a surface of the hydrophilic layer away from the carbon nanotube structure. The cells are seeded and cultured on the polar layer.

Abstract: The present disclosure relates to a method for making a pacemaker electrode lead. In the method, the conductive wire structure and the carbon nanotube structure are provided. A conductive material is combined with the carbon nanotube structure to form a carbon nanotube composite structure. The carbon nanotube composite structure is covered on surface of the conductive wire structure to form a conductive wire composite structure.

Abstract: A method for making a hydrophilic carbon nanotube film is provided. A reactor, an oxidative acid solution disposed in the reactor, and at least one primary carbon nanotube film are provided. The primary carbon nanotube film is set in the reactor disposed apart from the oxidative acid solution. The oxidative acid solution is then volatilized to form oxidative acid gas and the reactor is filled with the oxidative acid gas.